Method and apparatus for detecting and monitoring a partial space
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United States of America Patent
Stats
-
Feb 22, 2000
Grant Date -
N/A
app pub date -
Jul 20, 1998
filing date -
Sep 9, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The method for recording and monitoring of a partial space, specifically for determination of space occupancy in a vehicle and therefrom derivable activation and/or switching of accessory devices provides for the radiation of ultra sound from a sensor (5) with transmitter and receiver in the direction of the partial space. The return beam signal supplied by the receiver is passed to an evaluation unit and analyzed. Dependent thereon, accessory devices can be activated and/or switched. The sensor for the partial space (12) employs several transmitters (6) and several receivers (7). The return signals are recorded with respect to travel time difference, thus with respect to distance and/or with respect to signal contour determined by the amplitudes and evaluated with respect to object contour in the partial space (12).
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