The main purpose Vehicle Movement Based Street Lights With External Light Sensing Using ATMEGA project is that it saves energy by putting on the lights of the system only when the system detects movement of vehicle. The system switches on the street light ahead of the vehicle and switches off the trailing lights simultaneously.
The movement of vehicle gets detected by sensors. The system automatically puts on the lights that are ahead of the vehicle detected and as soon as the vehicle moves ahead, the trailing lights are switched off.
This system is more efficient for saving a lot of energy than existing system where the street lights are kept on always unlike this system where the street lights are put on only when movement of vehicle is detected.
During day time these lights are dim as this system has the capability to sense external lights.
Thus this system senses the external light and then accordingly switches ON or OFF the street lights. It uses PWM to control the intensity through microcontroller.
The IR sensors sense the vehicle movements and send it to a Atmega microcontroller that initiates commands for switching the lights ON/OFF.