Improved passive infra-red motion sensor switch

Abstract

This report represents automatic lighting and security system design using PIR motion sensor. Using this sensor, we can certainly minimize the consumption of electrical power. Power crisis is one of the most common problems in Uganda. With the help of the sensors we can eliminate this shortage by minimizing the wastage of electrical power or saving our generated power. PIR is the type of sensor that gives us signal when anything crosses its rays. It is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. It is a low-cost device used to detect a change in motion in its surroundings within different range of radius. A PIR-based motion detector is used to sense movement of people, animals, or other objects. It can also be helpful in the security systems. In many offices there are pavements where lights kept switched on for the whole night and day. But if we use the sensor then only when it gets motion it will give signal and the lights will be switched on. The whole process can be controlled by using microcontroller. Using the received motion from any movements, the PIR sensor gives high signal to the microcontroller. So we can easily create a program for the microcontroller for setting up an alarm. So this project is very lower costing and also power saving. It also minimizes the electric bills of any office. Moreover, it creates an opportunity for minimizing the load shedding in the cities and villages.