System and method for identifying seat occupancy in a vehicle
First Claim
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1. A method for identifying seat occupancy in a vehicle, the method which comprises:
- providing a plurality of seats with a plurality of reflectors;
providing a single transmitter that emits a field of high-frequency radiation towards the plurality of seats such that the plurality of reflectors in the plurality of seats reflect the high-frequency radiation that is emitted from the single transmitter;
providing a single receiver unit that receives the high-frequency radiation that is reflected by the plurality of reflectors in the plurality of seats; and
evaluating, in a control unit, the radiation received by the receiver unit with respect to a radiation intensity and deducing therefrom a seat occupancy at the plurality of seats.
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Abstract
A single high-frequency transmitter emits radiation in a vehicle (1) comprising several seats (2), said high-frequency radiation being reflected depending on whether a seat is occupied, transmitted to a receiver and evaluated with regard to the radiation intensity. In addition, the reliability of the identification is increased, even when the occupant is out of position, by the provision of at least one reflector (9) per seat in or on an allocated seat-belt (6).
27 Citations
21 Claims
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1. A method for identifying seat occupancy in a vehicle, the method which comprises:
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providing a plurality of seats with a plurality of reflectors; providing a single transmitter that emits a field of high-frequency radiation towards the plurality of seats such that the plurality of reflectors in the plurality of seats reflect the high-frequency radiation that is emitted from the single transmitter; providing a single receiver unit that receives the high-frequency radiation that is reflected by the plurality of reflectors in the plurality of seats; and evaluating, in a control unit, the radiation received by the receiver unit with respect to a radiation intensity and deducing therefrom a seat occupancy at the plurality of seats. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 20)
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17. A system for identifying seat occupancy in a vehicle with a plurality of seats to be monitored, comprising:
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a single transmitter configured to emit a field of high-frequency radiation towards each of the plurality of seats to be monitored; a plurality of reflector elements respectively disposed at the plurality of seats, said plurality of reflector elements, which are disposed at the plurality of the seats, configured to reflect the high-frequency radiation that is emitted by the single transmitter in dependence on an occupancy of the seats; a single receiver unit disposed to receive the high-frequency radiation that is reflected by said plurality of reflector elements which are disposed at the plurality of seats; and a control unit connected to said transmitter and to said receiver for activating a generation of the high-frequency wave field and/or for evaluating a radiation intensity received by said receiver unit in dependence on the occupancy of the seats. - View Dependent Claims (18, 19, 21)
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Specification