This website describes our concept of a Surveillance System.  Full functional prototype is implemented as part of  Interfacing  project.


Infra red sensors are used as motion / intrusion  detector. Several such sensors, equipped with microcontroller,  radio transmitter and receiver unit, are scattered throughout an  area, forming a wireless sensor network.

 Each sensor is registered to the base station, identified with a unique address. They   communicate over a shared channel synchronized by a tdma beacon signal, transmitted by the base station at regular intervals.

When a security breach occurs at any sensor, the base station is notified. There is a mounted camera on the base station, which rotates and focuses to the suspected point and records the situation. The exact position of each sensor and the camera controller unit can be calibrated by user  with the help of a visual software on a personal computer.