Design and Construction of Solar Power-Based Lighting System

Over the years, security posed a major concern at night due to the total darkness. The need to supply light without manually switching it on and off arises as years roll by. Automatic Street Light Control System is a simple yet powerful concept, which uses transistor as a switch. This paper presents how solar energy is being harnessed to power street light and virtually removes manual works to 100%. The system automatically switches ON lights when the sunlight goes below the visible region of the eyes. This is done by a sensor called Light Dependant Resistor (LDR) which senses the light actually like the human eyes. It automatically switches OFF lights whenever the sunlight comes, visible to the eyes. By using this system energy consumption is also reduced because presently the manually operated street lights are not switched off at sunlight nor switched on earlier before sunset.