Passive Infrared (PIR) Sensor Based Security Control System using Microcontroller using 89C51

-This paper evaluate the development of low cost security system in the area where there is need of continuous monitoring using PIR (pyroelectric infrared) sensor. A special type of human sensor PIR is used to detect the human being around 20 feet distance. This sensor uses the concept of Black Body Radiation. If anyone tries to cross the area means the sensor detects and it sends a signal to the Microcontroller which switches on the camera which displays the imageon TV monitor and also transmits a signal to the near security station. The receiver circuit is used toreceive the signal from the area, so that a person at the control room can take a vision of what actually going on the area. After sensing the image, it searches for RFID tag to match. If RFID doesn’t match then the Microcontroller activates the relay driver which drives the load such as automatic function alarm, Intruder message on display. Set up a message to predefined number using GSM modem. This project is very advanced and good accuracy with other specifications. Keywords--PIR Sensor, Microcontroller, GSM Modem, Alarm, LCD Display, Camera