DefinePK

Abstract

Saving and efficient utilization of electricity is utmost importance in the present world. Power saving concept is introduced to street lighting system with automatic detection of vehicles and rainfall. The proposed street lighting automation system is designed using Light dependent resistor (LDR), IR sensor and Raindrop sensor for day or night detection, vehicle detection and rainfall detection. The system is developed using ARM7 microcontroller. In the proposed system the sodium or halogen bulb are replaced with LED’s. During night LDR allows all lights to glow at less intensity, IR sensor detecting vehicles allow LED’s ahead of vehicle to glow at high intensity and dim the trailing lights, and intensity varied using PWM. Raindrop sensor detecting rainfall allows all lights to glow irrespective of vehicle movements. Implementation of this system saved energy to great extent.