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AUTOMATIC WALK-AWAY DETECTION

  • US 20100245038A1
  • Filed: 03/25/2009
  • Published: 09/30/2010
  • Est. Priority Date: 03/25/2009
  • Status: Active Grant
First Claim
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1. An automatic walk-away detection system for use with a vehicle comprising:

  • a fob configured to passively emit an in-zone signal upon receipt of a query signal and to passively emit an out-of-zone signal when the query signal is not received within an identified period of a repeatedly recurring timing loop; and

    a controller within the vehicle configured to issue the query signal at a beginning of the identified period and to automatically lock the vehicle depending on whether the fob is considered to have walked away from the vehicle, wherein the controller considers the fob to have walked away from the vehicle upon receipt of the out-of-zone signal or upon failure to receive the in-zone signal during the identified time period.

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