Apparatus and method of vehicle occupant sensing using multiple ultrasonic frequencies

Apparatus and method of vehicle occupant sensing using multiple ultrasonic frequencies

The present invention relates to improvements in echo ranging vehicle occupant location sensing. An apparatus () determines a vehicle occupant location characteristic. The apparatus () includes at least one sensor (e.g., ) for echo ranging at first and second ultrasonic frequencies. A timer function...

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Hauptverfasser: Schaffran, Michelle R, McKim, Dale W, Cooper, Stephen R. W, Gillis, Edward J
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Sprache:eng
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creator Schaffran, Michelle R
McKim, Dale W
Cooper, Stephen R. W
Gillis, Edward J
description The present invention relates to improvements in echo ranging vehicle occupant location sensing. An apparatus () determines a vehicle occupant location characteristic. The apparatus () includes at least one sensor (e.g., ) for echo ranging at first and second ultrasonic frequencies. A timer function portion () of a microcomputer () determines a time-of-flight for each frequency signal. The microcomputer () determines the occupant location characteristic using at least one of the determined times-of-flight.
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title Apparatus and method of vehicle occupant sensing using multiple ultrasonic frequencies
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