Design and Simulation of Automatic Street Lighting System using Solar

Abstract

The project is designed for Solar powered pedestal street lights that uses solar power from PV cells. For controlling the charging of the battery a charge controller is been used, and an LDR is used to sense the light on day as well as the evening time. The intensity of street lights is required to be kept high during the peak hours. The street lights are switched on using a sensing device LDR LED lights at the dusk and then switched off automatically when the timer set in the timer relay module stops. Due to which there is low energy consumption and the system works long life so that they can fast replace conventional lights world over. White light emitting diode (LED) replaces the HID lamps due to which the light gets saved and the system works without any problem. For energy saving of solar based system, also a charge controller is used to protect the battery from over charging, overloading and deep dischargeing protection. A light sensing device LDR (Light Dependent Resistance) is used, whose resistance reduces drastically for sensing purposes. In the measuring circuit the light intensity is monitored using an Light Dependent Resistance sensor and an signal from ldr sensor is send to the relay timer module and the times gets started and, after the time finishes the relay attached to the relay timer module gets open and the street lights stops. The design for this proposed project is modeled in PROTEUS 8 and acceptable results came at the end.