IoT based intrusion detection system using PIR sensor

Nowadays the need to build an affordable and effective intrusion detection system is a necessity with the events of intrusion or burglary on the rise and as we are approaching towards making our house a smart house in this digital era. The demand for such system is going to increase rapidly if it comes with a feasible price to every household. In most of the prevailing intrusion detection systems, motion sensors are used to detect the presence of an intruder. In this paper, the passive infrared sensor (PIR) is used to detect motion. This paper discusses the application of PIR sensors in such systems and use of ZigBee to create a wireless sensor network and ESP8266 module to send data to a remote server. PIR sensor, being passive in nature is undetectable and work well in the dark environment also. Global System for Mobile communication (GSM) module is also used to send text alerts to the concerned user when an intrusion is detected. Sensor nodes which are implanted in every room send data to the center node when motion is detected. Different sensor nodes which use ZigBee for wireless transmission are all connected to a center node.