Traffic light were first invented in the year 1868 Later the traffic light were developed in the 1914 by an American traffic. Signal Company,Which fixed green and red light at Corner of the 105th street and Euclid Avenue in Cleveland Traffic Light are also named as Stop light road traffic lamps.
Stop and go light which are signaling device placed at road Crossings everyday Pedestrian Crossings and other location to control competing flow of traffic. Traffic light have been fixed allover the world in many cities.Traffic light Control assigns a light way to the road users by using light in normal color. Traffic light Control System user a worldwide color code.
Working of the Traffic light Controller in the above diagram of the traffic light controller a 7 segment display is used as a counter display,and three led are used for the purpose of traffic light control.
An 8051 Micro controller is the brain of this whole project and is used to initiate the traffic signal at the intersections on road. This Circuit diagram make use of a crystal oscillator for generating frequency clock pulses. The led are interface to the port zero of the micro controller and are powered with 5 v power supply. Display is connect to the 2 pin to the 8051 Micro controller with a common anode Configuration.
The led get automatically switch on and off by making the corresponding port pins of the micro controller high, based on the 8051 micro controller and it programming does by using keil software. At a particular period of time only the green light hold on and the other light remains off and after sometimes the changeover traffic light control from green to red take place by making the succeeding Change for glowing of yellow led.This process continue as a cycle and the timing for Changing the led can be display with the use of a 7 led display in the project.
This traffic light control system can be further enhanced in such a way to control the traffic signal automatically based on the traffic density on road with the help of sensor modules with automatically turn off there no vehicles on either side of road which leads to power Consumption.
Stop and go light which are signaling device placed at road Crossings everyday Pedestrian Crossings and other location to control competing flow of traffic. Traffic light have been fixed allover the world in many cities.Traffic light Control assigns a light way to the road users by using light in normal color. Traffic light Control System user a worldwide color code.
Working of the Traffic light Controller in the above diagram of the traffic light controller a 7 segment display is used as a counter display,and three led are used for the purpose of traffic light control.
An 8051 Micro controller is the brain of this whole project and is used to initiate the traffic signal at the intersections on road. This Circuit diagram make use of a crystal oscillator for generating frequency clock pulses. The led are interface to the port zero of the micro controller and are powered with 5 v power supply. Display is connect to the 2 pin to the 8051 Micro controller with a common anode Configuration.
The led get automatically switch on and off by making the corresponding port pins of the micro controller high, based on the 8051 micro controller and it programming does by using keil software. At a particular period of time only the green light hold on and the other light remains off and after sometimes the changeover traffic light control from green to red take place by making the succeeding Change for glowing of yellow led.This process continue as a cycle and the timing for Changing the led can be display with the use of a 7 led display in the project.
This traffic light control system can be further enhanced in such a way to control the traffic signal automatically based on the traffic density on road with the help of sensor modules with automatically turn off there no vehicles on either side of road which leads to power Consumption.
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