Real-Time Implementation of Low Cost ZigBee Based Motion Detection System

Motion detection is a fundamental process that essentially detects a change in the position of an object with respect to its surrounding environment. It is highly demanding in various applications such as health care, defense and surveillance. The existing solutions for motion detection in indoor application are complex and expensive as it requires high end cameras and sensors. Hence, the objective of this paper is to provide an alternative cost effective solution. In the proposed motion detection system, Passive Infra Red (PIR) sensors are used to detect the presence of motion. The control unit of the PIR sensor transmits the trigger interrupt to the control unit of the camera via ZigBee communication. The rotational element present in the camera control unit rotates the camera in line of sight with the PIR sensor. The detected motion is then captured by the camera sensor and stored in Raspberry Pi, a microcontroller, which is then wirelessly transmitted to the receiver for further processing. The proposed motion detection system has been developed and validated in real time. It is observed that the performance of the developed system in terms of delay and QoS are acceptable for single event detection. However the proposed system can be extended for detection of multiple events.