Sensor for monitoring the immediate vicinity of a motor vehicle

Details Sensor for monitoring the immediate vicinity of a motor vehicle Sensor for monitoring the immediate vicinity of a motor vehicle

2008-01-29

2008-01-29

Porta, David (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

C250S252100, C250S336100

Reexamination Certificate

active

07323686

ABSTRACT:
A sensor for monitoring the immediate vicinity of a motor vehicle comprises an infrared emitter that is arranged behind a lens and a receiver for reflected infrared radiation, as well as an evaluation unit for detecting the presence of an object in the immediate vicinity of the motor vehicle, wherein a signal can be forwarded from the evaluation unit to a control device in the motor vehicle. In order to also ensure the proper function of the sensor when the lens is soiled, an infrared emitter and a receiver are provided for measuring the transparency of the lens, wherein the evaluation unit is able to increase the power of the infrared emitter for monitoring the immediate vicinity of the motor vehicle if it determines that the lens transparency is reduced.

REFERENCES:
patent: 6189808 (2001-02-01), Daniels et al.
patent: 6768103 (2004-07-01), Watson

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