PLC based Traffic light control system
Design and simulation traffic light control system using PLC
Abstract— This paper is intended to show the basic building blocks of a traffic light control system based on a programmable logical controller (PLC).
Introduction
The modern technology to various control systems was used in many areas and that purpose is the service of , through the simplification of procedures and organize various business. It is these areas that have benefited from it human is controlling the action of traffic signals and through which regulate the conduct of vehicles and pedestrians at intersections and prevent traffic jams that cause many problems for human, especially in a large cities, as well as the prevention of accidents
…show more content…
- There are three basic languages for programming (PLC), namely:
1. ladder language (LD).
2. Function Black Diagram (FBD) or (FC).
3. Instruction List language (IL) or (IS).
- After the program has been written using the ladder language being sent from the PC memory (programming tool) to the program memory in the device (PLC) and includes a translation of the instructions to the machine language accepted by the processor by the translator (Compiler) supplied with the device's software.
Programmable device program required for this project was done using a program (WPLsoft2.4), which enables us to design and simulations designed program before sending it to the device (plc) has been design using a temporary internal split time depending on the priorities for action for each line, and is the work of a full cycle time ( four lines) 80 seconds per lamp 20 seconds in green and yellow bulb be done with nested green lamp which works in the last 5 seconds of the work of the green lamp. As for the lamp with the red color shall be done when Extinction green color and be done time 60