Designing A Traffic Light Controller Using PIC16F877

Zaimi, Ahmad (2005) Designing A Traffic Light Controller Using PIC16F877. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The objective of this project is to design a traffic light microcontroller that operates based on the current traffic flow. Traffic flows are classified into three conditions that are low level, medium level, and high level. This condition will be decided when the traffic light is in stop condition (red light). This traffic light controller is used at the intersection that consists of a main road and two side roads where the traffic flow is not constant. This traffic light microcontroller is designed using peripheral interface controller (PIC). A state diagram and a flow chart is built to describe the operation of microcontroller. Then, the program is written using Microcode Studio software equips with PIC Basic Pro Language before it is downloaded into PIC. Before the PIC is assembled onto a printed circuit board (PCB), a simulation is conducted to ensure that the result is same as the expected result. It is also to detect any problem if the microcontroller doesn't work as it should be. The final output of this project is a model of traffic light system that controlled by PIC. The advantage of using PIC microcontroller is it can reduce the cost of controlling the traffic light.

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