Patent ID: 6021373
Filing Date: 2000-02-01
Classification: B60Q

Abstract:
A back-up proximity sensor for a vehicle, the sensor comprising:at least one sensor pair, each at least one sensor pair including:a first passive infrared sensor (PIR), the first PIR having a first field of view and generating a first output signal when a warn body is detected within the first field of view;a second passive infrared sensor (PIR), the second PIR having a second field of view and generating a second output signal when a warm body is detected within the second field of view, the first PIR and second PIR being arranged substantially vertically with respect to one another, the first PIR and second PIR being angularly directed such that the first field of view and second field of view intersect, the intersection defining a detection zone; anda detection circuit, the detection circuit being responsive to the first output signal and second output signal of each of the at least one sensor pair and providing a third output signal indicative of a warm body detected in at least one detection zone.