Solar Energy Optimization for Street Light using Arduino

The main aim of this project (solar energy optimization for street light using arduino) is to utilize the application of the Arduino board to control the intensity of street light. As the sun radiation decreases slowly during late-night hours, the intensity of street light gets increased progressively to save energy and so, the street lights switch on at the dusk and then switch off at the dawn, automatically. . The process repeats every day. . White Light Emitting Diodes (LED) replaces conventional light in street lighting system to include dimming feature. The intensity is not possible to be controlled by the convectional street light which is generally used in urban street lights. LED lights are the future of lighting, because of their low energy consumption and long life. LED lights are fast replacing conventional lights because intensity control is possible by the PWM.This proposed system uses an Arduino board and a rectified-power supply. String of LED are interfaced to the Arduino board with a MOSFET device .The intensity control of the LED light is possible by varying duty cycle from a DC source. A programmed Arduino board is engaged to provide different intensities at different times of the night using PWM technique. This project is also enhanced by integrating the LDR to follow the switching operation precisely.