Crew member detecting device
First Claim
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1. A crew member detecting device for a vehicle with a bucket seat comprising:
- an acoustic wave generator element mounted on a vehicle body, for generating a standing wave having a plurality of loops and nodes between said acoustic wave generator element and the bucket seat; and
an acoustic wave receiver element disposed in a region of said standing wave, for measuring the number of the loops or nodes of the standing wave and calculating a displacement value on the basis of a measurement result of the number of the loops or nodes of the standing wave to detect the presence of a person on said bucket seat from variations in the output of said acoustic wave receiver element which are due to the movement of said person on said bucket seat.
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Abstract
In a crew member detecting device, an acoustic wave generator element mounted on a vehicle body generates a standing wave between the acoustic wave generator element and a bucket seat, and an acoustic wave receiver element is provided in the region of the standing wave, to detect the presence of a person on the bucket seat from variations in the output of the acoustic wave receiver element which are due to the movement of the person on the bucket seat.
35 Citations
4 Claims
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1. A crew member detecting device for a vehicle with a bucket seat comprising:
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an acoustic wave generator element mounted on a vehicle body, for generating a standing wave having a plurality of loops and nodes between said acoustic wave generator element and the bucket seat; and an acoustic wave receiver element disposed in a region of said standing wave, for measuring the number of the loops or nodes of the standing wave and calculating a displacement value on the basis of a measurement result of the number of the loops or nodes of the standing wave to detect the presence of a person on said bucket seat from variations in the output of said acoustic wave receiver element which are due to the movement of said person on said bucket seat. - View Dependent Claims (2, 3, 4)
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Specification