Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2007-11-20
2007-11-20
La, Anh V. (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S438000, C280S735000, C701S045000, C342S072000
Reexamination Certificate
active
10536041
ABSTRACT:
A system for determining seat occupancy in a motor vehicle includes a microwave transmitter, a microwave receiver and preferably a reflector. If a person is between those appliances, the microwave radiation is attenuated. The reflector can be a backscattering device, such that the radiation received by the receiver is unequivocally associated with the reflector. Furthermore or alternatively, the transit time of the microwaves can be measured, to be subsequently processed in combination with an analysis of the seated position of passengers. In preferred embodiments, the microwave radiation diffraction properties around an object are also used to obtain the seated position of passengers. The determination of a seat occupancy and optionally of seat occupancy mode can be advantageously used for locking or on the other hand releasing an airbag.
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RFID Handbuch: “Grundlagen und praktische Anwendungen induktiver Funkanlagen, Transponder und kontaktloser Chipkarten”, 3. Auflage, Carl Hanser Verlag München, Sep. 2002, ISBN 3-446-22071-2, 5 pgs.
EDA-Zentrum: “Entwicklung eines Mikrochips zur Realisierung von Identifikationssystemen”, Einführung in Identifikationssysteme, XP-002272961, pp. 1-17.
Hofbeck Klaus
Rösel Birgit
Greenberg Laurence A.
La Anh V.
Locher Ralph E.
Siemens Aktiengesellschaft
Stemer Werner H.
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