SENSORS

MOTIONWhat is a motion sensor?A motion sensor detects the movement of objects within itsfield of view. Passive infrared types are the most commontechnology used for motion sensors. These sensors detectlocalized variances in temperature between objects and thefixed background to determine if any object is moving. Theyoften employ special “zoned” or “curtain” lenses to amplifythese variances and increase sensitivity. Beyond bare sensordevices, today a range of fully integrated motion sensors isavailable.ApplicationCasesMotion detectorsLighting controlOccupancysensorsReal Life ExamplesBurglar alarm systemsIllumination control forpublic areasBuilding automationImportant selection parametersOutput Type (Analog vs. Digital)This indicates the nature of the output signal interface, whichcan be one of several forms of analog or digital interfaces, oreven a combination of several.Detection TypeThis indicates the nature or pattern of detection, includingstandard, spot, and others.Typical applicationsThe most popular applications for motion sensors are thePIR motion detectors used in alarm systems, as well asoccupancy sensors, often built into light switches or fixtures,which turn on when movement is detected in the vicinity.MOTION55www.FutureElectronics.com/Sensors