Designing a Blood-Pressure Transducer: Midterm Exam Insights
School
Carleton University**We aren't endorsed by this school
Course
SYSC 4203
Subject
Biology
Date
Dec 10, 2024
Pages
270
Uploaded by BailiffKangaroo5258
SYSC4203 F2019: Midterm ExamStudent:Test A1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:Test A2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:Test A3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:Test A4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:Test A5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:Test AExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:Test B1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:Test B2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:Test B3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:Test B4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:Test B5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:Test BExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:100994082 Lasisi, Anjolaoluwa1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:100994082 Lasisi, Anjolaoluwa2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100994082 Lasisi, Anjolaoluwa3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:100994082 Lasisi, Anjolaoluwa4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:100994082 Lasisi, Anjolaoluwa5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100994082 Lasisi, AnjolaoluwaExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101008662 Politis, Diego1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101008662 Politis, Diego2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101008662 Politis, Diego3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101008662 Politis, Diego4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101008662 Politis, Diego5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101008662 Politis, DiegoExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101020987 Elalem, Mohamed1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101020987 Elalem, Mohamed2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101020987 Elalem, Mohamed3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101020987 Elalem, Mohamed4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101020987 Elalem, Mohamed5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101020987 Elalem, MohamedExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101042691 Njoku, Udochukwu1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101042691 Njoku, Udochukwu2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101042691 Njoku, Udochukwu3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101042691 Njoku, Udochukwu4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101042691 Njoku, Udochukwu5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101042691 Njoku, UdochukwuExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101015307 Delgado Torres, Juan1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101015307 Delgado Torres, Juan2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101015307 Delgado Torres, Juan3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101015307 Delgado Torres, Juan4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101015307 Delgado Torres, Juan5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101015307 Delgado Torres, JuanExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:100982801 Kukhta, Benjamin1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:100982801 Kukhta, Benjamin2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100982801 Kukhta, Benjamin3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:100982801 Kukhta, Benjamin4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:100982801 Kukhta, Benjamin5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
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SYSC4203 F2019: Midterm ExamStudent:101001038 Wang, Kan1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101001038 Wang, Kan2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101001038 Wang, Kan3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101001038 Wang, Kan4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101001038 Wang, Kan5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101001038 Wang, KanExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101049874 Shehu, Abubakar1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101049874 Shehu, Abubakar2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101049874 Shehu, Abubakar3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101049874 Shehu, Abubakar4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101049874 Shehu, Abubakar5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101049874 Shehu, AbubakarExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101032342 Darwish, Riham1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101032342 Darwish, Riham2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101032342 Darwish, Riham3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101032342 Darwish, Riham4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101032342 Darwish, Riham5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101032342 Darwish, RihamExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101031998 Hayles, Josh1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101031998 Hayles, Josh2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101031998 Hayles, Josh3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101031998 Hayles, Josh4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101031998 Hayles, Josh5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101031998 Hayles, JoshExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101000244 Bahitham, Walaa1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101000244 Bahitham, Walaa2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101000244 Bahitham, Walaa3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101000244 Bahitham, Walaa4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101000244 Bahitham, Walaa5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101000244 Bahitham, WalaaExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:100839804 Poole, Joshua1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:100839804 Poole, Joshua2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100839804 Poole, Joshua3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:100839804 Poole, Joshua4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:100839804 Poole, Joshua5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100839804 Poole, JoshuaExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101039762 Lawal, Seun1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101039762 Lawal, Seun2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101039762 Lawal, Seun3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101039762 Lawal, Seun4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101039762 Lawal, Seun5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101039762 Lawal, SeunExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:100965643 Abu Saleh, Ranim1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:100965643 Abu Saleh, Ranim2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100965643 Abu Saleh, Ranim3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:100965643 Abu Saleh, Ranim4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:100965643 Abu Saleh, Ranim5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100965643 Abu Saleh, RanimExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101012848 Stewart, Mary1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101012848 Stewart, Mary2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101012848 Stewart, Mary3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101012848 Stewart, Mary4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101012848 Stewart, Mary5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101012848 Stewart, MaryExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101058440 Parayaoan, Vanessa1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101058440 Parayaoan, Vanessa2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101058440 Parayaoan, Vanessa3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101058440 Parayaoan, Vanessa4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101058440 Parayaoan, Vanessa5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101058440 Parayaoan, VanessaExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101001771 Blidaru, Teo1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101001771 Blidaru, Teo2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101001771 Blidaru, Teo3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101001771 Blidaru, Teo4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101001771 Blidaru, Teo5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101001771 Blidaru, TeoExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101020723 Salamoun, Hanan1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101020723 Salamoun, Hanan2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101020723 Salamoun, Hanan3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101020723 Salamoun, Hanan4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101020723 Salamoun, Hanan5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101020723 Salamoun, HananExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:100937981 Ocloo, Eli1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:100937981 Ocloo, Eli2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100937981 Ocloo, Eli3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:100937981 Ocloo, Eli4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:100937981 Ocloo, Eli5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
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SYSC4203 F2019: Midterm Exam Student:101050975 Kamgang Nkenngni, Cedric1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm Exam Student:101050975 Kamgang Nkenngni, Cedric2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm Exam Student:101050975 Kamgang Nkenngni, Cedric3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm Exam Student:101050975 Kamgang Nkenngni, Cedric4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm Exam Student:101050975 Kamgang Nkenngni, Cedric5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
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SYSC4203 F2019: Midterm ExamStudent:100995046 El-Astal, Layan1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:100995046 El-Astal, Layan2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100995046 El-Astal, Layan3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:100995046 El-Astal, Layan4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:100995046 El-Astal, Layan5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100995046 El-Astal, LayanExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101021710 Faizal, Adeek1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101021710 Faizal, Adeek2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101021710 Faizal, Adeek3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101021710 Faizal, Adeek4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101021710 Faizal, Adeek5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101021710 Faizal, AdeekExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101013607 Quansah, Bodee1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101013607 Quansah, Bodee2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101013607 Quansah, Bodee3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101013607 Quansah, Bodee4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101013607 Quansah, Bodee5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101013607 Quansah, BodeeExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101025114 Rocco, Adam1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101025114 Rocco, Adam2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101025114 Rocco, Adam3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101025114 Rocco, Adam4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101025114 Rocco, Adam5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101025114 Rocco, AdamExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101038472 Hasmani, Mahima1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101038472 Hasmani, Mahima2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101038472 Hasmani, Mahima3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101038472 Hasmani, Mahima4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101038472 Hasmani, Mahima5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101038472 Hasmani, MahimaExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101017367 Salah Eddin, Majd1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101017367 Salah Eddin, Majd2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101017367 Salah Eddin, Majd3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101017367 Salah Eddin, Majd4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101017367 Salah Eddin, Majd5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
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SYSC4203 F2019: Midterm ExamStudent:101004632 Khela, Bhavneet1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101004632 Khela, Bhavneet2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101004632 Khela, Bhavneet3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101004632 Khela, Bhavneet4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101004632 Khela, Bhavneet5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
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SYSC4203 F2019: Midterm ExamStudent:100994250 Reid, Bradley1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:100994250 Reid, Bradley2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100994250 Reid, Bradley3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:100994250 Reid, Bradley4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:100994250 Reid, Bradley5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100994250 Reid, BradleyExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:100962487 Guo, Haoyang1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:100962487 Guo, Haoyang2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100962487 Guo, Haoyang3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:100962487 Guo, Haoyang4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:100962487 Guo, Haoyang5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100962487 Guo, HaoyangExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101000595 Kejriwal, Ankita1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101000595 Kejriwal, Ankita2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101000595 Kejriwal, Ankita3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101000595 Kejriwal, Ankita4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101000595 Kejriwal, Ankita5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101000595 Kejriwal, AnkitaExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101042784 Rajey, Omkrishan1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101042784 Rajey, Omkrishan2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101042784 Rajey, Omkrishan3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101042784 Rajey, Omkrishan4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101042784 Rajey, Omkrishan5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101042784 Rajey, OmkrishanExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:100998555 Wiles, Matthew1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:100998555 Wiles, Matthew2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100998555 Wiles, Matthew3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:100998555 Wiles, Matthew4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:100998555 Wiles, Matthew5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100998555 Wiles, MatthewExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:100980120 Van Fraassen, Luke1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:100980120 Van Fraassen, Luke2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100980120 Van Fraassen, Luke3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:100980120 Van Fraassen, Luke4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:100980120 Van Fraassen, Luke5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100980120 Van Fraassen, LukeExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:100997385 Shaw, Adele1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:100997385 Shaw, Adele2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100997385 Shaw, Adele3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:100997385 Shaw, Adele4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:100997385 Shaw, Adele5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100997385 Shaw, AdeleExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm Exam Student:101015132 Dharmarajan, Kavichandiran1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm Exam Student:101015132 Dharmarajan, Kavichandiran2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm Exam Student:101015132 Dharmarajan, Kavichandiran3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm Exam Student:101015132 Dharmarajan, Kavichandiran4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm Exam Student:101015132 Dharmarajan, Kavichandiran5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm Exam Student:101015132 Dharmarajan, KavichandiranExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101036332 Nzidee, David1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101036332 Nzidee, David2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101036332 Nzidee, David3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101036332 Nzidee, David4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101036332 Nzidee, David5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101036332 Nzidee, DavidExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101007378 Agarwal, Manas1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101007378 Agarwal, Manas2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101007378 Agarwal, Manas3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101007378 Agarwal, Manas4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101007378 Agarwal, Manas5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101007378 Agarwal, ManasExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101003507 Kyrollos, Daniel1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101003507 Kyrollos, Daniel2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101003507 Kyrollos, Daniel3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101003507 Kyrollos, Daniel4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101003507 Kyrollos, Daniel5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101003507 Kyrollos, DanielExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101014387 Kulenthiran, Janarth1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101014387 Kulenthiran, Janarth2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101014387 Kulenthiran, Janarth3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101014387 Kulenthiran, Janarth4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101014387 Kulenthiran, Janarth5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101014387 Kulenthiran, JanarthExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101047976 Hassan, Musab1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101047976 Hassan, Musab2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101047976 Hassan, Musab3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101047976 Hassan, Musab4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101047976 Hassan, Musab5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101047976 Hassan, MusabExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:100999019 Abusharkh, Farah1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:100999019 Abusharkh, Farah2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100999019 Abusharkh, Farah3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:100999019 Abusharkh, Farah4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:100999019 Abusharkh, Farah5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100999019 Abusharkh, FarahExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:101020390 Alsayed, Ahmed1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:101020390 Alsayed, Ahmed2/5Q1a: Consider a patient with a heart rate of 80 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 160/100 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a stenotic aortic valve. Briefly (1–2 sentences) explain valve stenosis, and how it affectsblood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) if the pressure drop across the aortic valve (whenopen) is 15 mmHg.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101020390 Alsayed, Ahmed3/5Q2b: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a parametric method to calculate HRV, and discuss (1–2 sentences) how parametricmethods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:101020390 Alsayed, Ahmed4/5Q3b: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks)Semiconductor strain gauges give increased sensitivity. Explain how (1–2 sentences) how they are able todo this(b) (5 marks) Calculate the output,Vo, ifRA= 3.90 kΩ andRB= 3.95 kΩ.(c) (10 marks) IfIB= 1μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB4 kΩ4 kΩRA5 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:101020390 Alsayed, Ahmed5/5Q4b: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks)Given the shock hazzard, what additional considerations would be necessary if the wiring and transducerwas inside the body?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an overdampted system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:101020390 Alsayed, AhmedExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.
SYSC4203 F2019: Midterm ExamStudent:100999035 Kshim, Aila1/5Instructions:- This test has 5 pages and 4 questions. Answer all questions and subparts. Marks are indicated.- You have80 minutesto complete this exam.- This is a closed book exam; however, you are permitted to bring one 8.5”×11” sheet of notes.- You are permitted to use a non network-connected calculator.- Answers should be written in this exam document. Write your answers in the space provided. If yourequire more space, attach extra pages to the exam, and indicate that extra space was used.- All electronics components may be assumed ideal, unless stated otherwise.Background:Your first job after graduation is to design a disposable blood-pressure transducer (as shownbelow).To increase sensitivity, the design uses a semiconductor strain gauge transducer.Thismidterm exam poses questions relevant to the design of this system.Flush valveGeltransducerPatientBlood-pressure transducer systemgauge Agauge BInset of Gel and transducer. The transducer is composed oftwo separate strain gauges (right) where gauge A isdeformed by the gel, while gauge B is mechanically separate.Q#1a/51b/51c/52a/52b/53a/53b/53c/104a/54b/54c/5Tot/60
SYSC4203 F2019: Midterm ExamStudent:100999035 Kshim, Aila2/5Q1a: Consider a patient with a heart rate of 75 bpm, in whom the transducer is attached to an arterial line. The systolic/diastolicblood pressure is 150/90 mmHg.(a) (5 marks) In the graph below, sketch the ECG as well as the Pressure in the aorta (label it asPa) as a function oftime. The first R-wave peak should be att= 0 ms. Show the timing of the following R-wave peak.(b) (5 marks) The patient has a insufficient aortic valve. Briefly (1–2 sentences) explain valve insufficiency, and how itaffects blood pressure.(c) (5 marks) Sketch the pressure in the left ventricle (label it asPlv) for the insufficient valve. Indicate when (on thegraph) leakage occurs.0255075100125150175P (mmHg)-500-25002505007501000msECG-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100999035 Kshim, Aila3/5Q2a: Heart-rate variability is undestood to reveal useful information about the patient’s health.A plot of R–R intervals calculated from the patient’s QRS are shown below.(a) (5 marks) Calculate the RMSSD (Root Mean Square of Successive Differences between each heartbeat) parameter forthis signal.(b) (5 marks) Give an example of a frequency-domain method to calculate HRV, and discuss (1–2 sentences) howfrequency-domain methods compare to time-domain methods to calculate it.6007008009001000R–R (ms)0246Seq #
SYSC4203 F2019: Midterm ExamStudent:100999035 Kshim, Aila4/5Q3a: In the transducer, each of the gauges is connected to a separate arm of a Wheatstone-bride design (gauge A toRAandgauge B toRB). The amplifier is an AD620 instrumentation amplifier with a gain set to 100. Initially, the amplifier isideal.(a) (5 marks) Consider that the gauge resistance values vary with temperature. Why (1–2 sentences) is the Wheatstonebridge design so useful for this application?(b) (5 marks) Calculate the output,Vo, ifRA= 2.10 kΩ andRB= 2.15 kΩ.(c) (10 marks) IfIB= 2μA (but the amplifier is otherwise ideal), what is the new value ofVo?(First, calculate theTh´evenin equivalent output impedance for each branch of the Wheatstone bridge. Next, use this value to calculatethe output)RB2 kΩ2 kΩRA10 V-+AD620Vo
SYSC4203 F2019: Midterm ExamStudent:100999035 Kshim, Aila5/5Q4a: Medical device regulations and validation are important for this design.(a) (5 marks) What kind of electrical shock hazzard does this device represent (macroshock, microshock)? Justify yourchoice (1–2 sentences).(b) (5 marks) Given the shock hazzard, describe the role of the gel (1–2 sentences)?(c) (5 marks) The figure below represents the aortic pressure (Pa).Unfortunately, when the catheter is calibrated, itis identified to behave like an underdamped system.Sketch a possible output signal.Describe (1–2 sentences) ameasurement error that could occur with this system.0255075100125150Pa(mmHg)-500-25002505007501000ms
SYSC4203 F2019: Midterm ExamStudent:100999035 Kshim, AilaExtra PageThis page may be used for additional notes. If used, indicate clearly which question answers belong to.