Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2006-08-01
2006-08-01
La, Anh V. (Department: 2636)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S562000, C340S501000, C340S602000, C180S271000, C701S045000
Reexamination Certificate
active
07084763
ABSTRACT:
A passenger detection system is provided. The passenger detection system utilizes an oscillation circuit that causes an antenna electrode to emit an electric field that is disrupted by the electrical characteristics of an object placed on the seat. This disruption alters the current and phase of the signal in the antenna electrode. By comparing the current flowing in the antenna electrode and/or the difference between the phase of the signal in the antenna electrode and the oscillation circuit output signal with predetermined threshold values, it is possible to detect the presence of a passenger in a reliable and inexpensive manner. Environmental sensors are used to make the determination more accurate. Humidity, moisture and/or grounding condition are detected and used to alter processing, values or calculations.
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Shieh Shiuh-An
Thompson Gregory T.
Brinks Hofer Gilson & Lione
Elesys North American Inc.
La Anh V.
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