MULTIFACETED SENSOR SYSTEM

摘要

A system and method are disclosed for enabling the selective monitoring of various regions of an aperture having a powered closure operative therein. Each of plural, individually selectable emitters (32) is adapted to provide a narrow beam whose angle with respect to a horizontal plane is offset from the other emitters. All of the radiated beams lie in substantially the same plane in azimuth. A controller (38) responds to certain stimuli to selectively activate one or more of the emitters. The energy produced is monitored by a receiver (34) disposed within the same housing (36). The receiver (34) output is analyzed by the controller (38) to identify the presence of an obstacle in that portion of the aperture illuminated by the selected emitters (32).