Cause And Effect Of Peer Pressure Essay

BRAIN WAVE CONTROLLER FOR STRESS REMOVAL AND AUTOMATION OF
AUTOMOBILE IGNITION TO PREVENT DRIVING UNDER INFLUENCE
Mr.A.Palanisamya,**, Mr.K.Kabilanb,*, Ms.V.Chithrab, Mr.G.Jhawakharb, Mr.S.Deepakb aAssistant Professor, Department of ECE, Nandha College of Technology, Erode-638052, India b Student, Department of ECE, Nandha College of Technology, Erode-638052, India
**e-mail:[e-mail]
*e-mail:[e-mail]
Abstract:
Stress is a prevalent and costly problem in today's workplace. It is the harmful physical and emotional response that occurs when there is a poor match between job demands and the capabilities, resources, or needs of the worker. Addiction is one of the chronic disorders that are characterized by the
repeated

A beating tone will be perceived, as if the two tones mixed naturally, out of the brain. The frequency of the tones must be below about 1,000 to
1,500 hertz. The difference between the two frequencies must be small (below about 30 Hz) for the effect to occur; otherwise the two tones will be distinguishable and no beat will be perceived.
Binaural beats can influence functions of the brain besides those related to hearing. This phenomenon is called frequency following response (FFR). The concept is that if one receives a stimulus with a frequency in the range of brain waves, the predominant brain wave frequency is said to be likely to move towards the frequency of the stimulus (a process called entrainment).
Human hearing is limited to the range of frequencies from 20 Hz to 20,000 Hz, while the frequencies of human brain waves are below about 40 Hz. To account for this, binaural beat frequencies must be used.
According to this view, when the perceived beat frequency corresponds to any of the brainwave frequencies, the brain entrains to or moves towards the beat frequency. For example, if a 315 Hz sine wave

It consist of a 0.7 inch diameter hard plastic outer disc housing with a pre-jelled
Silver chloride snap style post pellet insert. These sensors do not contain any latex. Figure 5 shows the representation of Ag/Agcl EEG sensor.
Fig. 5 Electroencephalography (EEG) sensors
Fig.6 EEG Fabricated Headset
The sensor sends the analog brainwave signal into the instrumentation amplifier circuit.
C.Instrumentation Amplifiers
The amplitude of analog brainwaves is in between the range of 150 – 250 micro volts (μV). This is very low. For processing, at least amplitude above 2 volt is needed. For this a high gain and low noise amplifier is needed. For that instrumentation amplifier with high gain and high CMRR ratio is employed.
Here one operational is not enough to produce this much high gain. So a series of amplifier is cascaded to give required gain. The gain of an individual inverting operational amplifier is given by.
Gain (A) = -R2/R1
Fig.7 Circuit diagram of cascaded inverting amplifier with a gain of 20,000. (Designed in Pspice)
Here we are using four inverting amplifier cascaded as shown in figure 7. Let the gain of each inverting amplifier from left to right be A1, A2, A3 and