Patent ID: 6791458
Filing Date: 2004-09-14
Classification: G01S,G08B,H05B,Y02B

Abstract:
A sensor, adapted to control a drive circuit for driving a lighting circuit configured to illuminate an area monitored by the sensor, comprising:an infrared energy sensor, adapted to output an infrared energy detection signal indicative of detection or non-detection of infrared energy; a microwave energy sensor, adapted to output a pulsed microwave energy detection signal indicative of detection or non-detection of microwave energy; a test button, adapted to place the sensor in a test mode for a predetermined time period to allow a tester to define a boundary of the area to be monitored by the microwave energy sensor by walking along the perimeter of the area to be monitored; and a controller, adapted to automatically adjust a sensitivity level for detecting the pulsed microwave energy detection signals during the test mode, said controller, being further adapted to output a control signal to control said drive circuit to control activation and deactivation of said lighting circuit in response to a condition of said infrared energy detection signal and a condition of said pulsed microwave energy detection signal.