An Energy-Efficient Microcontroller-Based Smart Light Controlling System

Abstract

In this work, an energy-saving smart light controlling system has been proposed that can maintain the desired intensity of light in a room automatically. Unlike the conventional light controlling system, the proposed system splits a large room into several zones and analyzes the light intensity of each zone; hence, the controlling unit adjusts the light intensity to the desired level. The main controlling unit consists of a light sensor, a motion sensor, a relay with a driver unit, an LCD display, etc. for controlling light efficiently to reduce the power waste. The sensors measure the intensity of light, based on the standard light intensity data chart the controller units make a decision how many light bulbs are needed to be switched ON/OFF in a particular zone. Moreover, the system automatically switched-OFF all light bulbs when there is nobody in the room. Proteus design suite 8.0 is used to design and simulation of the proposed system. Moreover, the PCB layout is designed using ExpressPCB version 7.5.0. The proposed system is capable of minimizing the power loss by up to 44% in comparison to the conventional light management system.

Keywords

• smart light control
• microcontroller
• light sensor
• motion sensor
• energy saving