Occupant sensor
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United States of America Patent
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May 13, 2003
Issued Date -
N/A
app pub date -
Dec 29, 1999
filing date -
Dec 30, 1998
priority date (Note) -
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Abstract
An occupant sensor comprises an electric field sensor comprising a plurality of first electrodes mountable within a vehicle seat, wherein the plurality of first electrodes are disposed on a common surface and are non-overlapping with one another. The electric field sensor further comprises at least one second electrode, wherein the first and second electrodes are proximate to one another. A sensing circuit is operatively coupled to the first and second electrodes so as to control the level of capacitance between an occupant on said vehicle seat and the circuit ground. In a second aspect, the electric field sensor incorporates a lattice electrode with a ground plane. In a third aspect, the electric field sensor incorporates a receive electrode that receives a signal from a sensing electrode for purposes of mitigating the effects of a seat wetting condition.
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