08-16-2017, 09:59 PM
Abstract
The purpose of this project is to save the power used in places like libraries, staircases, parking, gardens etc. where lots of power is wasted unnecessarily by keeping the fans and lights ON even when there is no one present, and also at places where security is paramount and an alarm needs to be generated when someone is passing by. Thus, using
the same machine, it can be used to save the power and also as a security alarm using a simple sensor called Passive Infrared (PIR) Sensor. When a person enters the monitored area, the Infrared energy emitted from the living body is focused by a Fresnel lens segment and the PIR sensor activates, and gives to the microcontroller which acts as a security surveillance system or power saving device according to the position of switch. If the switch is at position 1, the camera views the allotted area and generates an alarm indicating that someone entered and a message is sent to the nearby station. And, when the switch is at position 2, the lamp and fan may be ON or OFF. Thus, this article discusses the concept of how PIR sensor works to save the energy and to generate security alarm. Moreover, as there is need to save the energy as much as possible so as to meet the future generation and also
in order to have high security, this proposed model would be a great aid to the society.