Conductive e-field occupant sensing
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United States of America Patent
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-
Dec 9, 2003
Grant Date -
Mar 13, 2003
app pub date -
Sep 12, 2001
filing date -
Sep 12, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus (100) for sensing size and location of a vehicle occupant includes a conductor (110) that is electrically coupled to a voltage signal generator (612) and disposed within the seat of the vehicle. The conductor generates a periodic electric field (124). A plurality of sensor electrostatic antennas (120) is disposed adjacent the roof and is capable of sensing at least a portion of the electric field (124). A detection circuit (624) determines the size and location of a vehicle occupant based upon an amount of the electric field (124) incident on each sensor electrostatic antenna (120).
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