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Apparatus and methods for monitoring and detecting seat belt usage

  • US 6,784,803 B1
  • Filed: 08/20/2002
  • Issued: 08/31/2004
  • Est. Priority Date: 08/23/2001
  • Status: Expired due to Fees
First Claim
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1. An apparatus for detecting seat belt usage, comprising:

  • an enforcement device having an enforcement circuit board for sending a first signal and receiving a return signal;

    a vehicle device having a vehicle circuit board for receiving the signal from and return the return signal to the enforcement device;

    means for generating a properly fastened state or an improperly fastened state for a seat belt;

    means for synchronizing multiplexers at a vehicle transmitter;

    means for decoding the return signal at an enforcement receiver; and

    wherein the means for synchronizing multiplexers and the means for decoding are maintained in phase by transmitting a vehicle'"'"'s clock and 1 shot arming window in the return signal with BCD data and binary sequence data.

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