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System and method for detecting the seat occupancy in a vehicle

  • US 7,090,247 B2
  • Filed: 05/10/2004
  • Issued: 08/15/2006
  • Est. Priority Date: 11/20/2002
  • Status: Expired due to Fees
First Claim
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1. A system for detecting the seat occupancy in a vehicle, comprisingat least one microwave transmitter,reflectors which are arranged in the vehicle, andat least one microwave receiver,whereinthe at least one microwave transmitter and the reflectors are arranged so that the reflected intensity depends on the seat occupancy in the vehicle,the reflectors can be selectively activated or deactivated during defined time intervals,the reflectors can be distinguished from one another via an assignment of the reflectors to the time intervals, andthe reflectors are modulating back-scatter devices.

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