Proposed noval security system based on passive infrared sensor

In this paper, a PIR based security system which saves the power consumption and the memory space of the recording system has been proposed. Passive Infrared Radiation (PIR) sensor detects the change in infrared radiation of warm blooded moving object in its feasible detection range. Once the system gets adapted to the environment in first few initial seconds, then any change in the level of infrared radiations surrounding him will pass on the signal to microcontroller of the system that will in turn trigger the alarm for immediate saviour action and switches on the camera through relay to start recording the motion and corresponding activities of the intruder an save it in the system for later surveillance and an evidence against some criminal activity which might happen or for any breakage of the law. A software installed in the system will highlight the intruder face and help camera to focus on his motion specifically and guide his own motion according to his movements and an email message will be sent to the owner of the shop to alert him about the situation in addition to detecting the webcam connection and starting and saving the video simultaneously. Once the intruder moves out of detection range of the sensor, the webcam and light gets turn OFF. The software repeats the process. Thereby saving the power consumption and the memory space of the recording system as the webcam will only get turned ON when PIR sensors detects someone. As a result, the system starts recording only when the webcam is turned ON, hence saving memory space.