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.
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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