Occupancy and Motion Detectors

Abstract

September 11 has changed the way people think about airport, aviation, and security in general. The threat is expanding interest in more reliable systems to detect presence of people within the protected perimeters. The occupancy sensors detect the presence of people (and sometimes animals) in a monitored area. Motion detectors respond only to moving objects. A distinction between the two is that the occupancy sensors produce signals whenever an object is stationary or not, while the motion detectors are selectively sensitive to moving objects. The applications of these sensors include security, surveillance, energy management (electric lights control ), personal safety, friendly home appliances, point-of-sale advertisements, interactive toys, novelty products, etc.