Wet seat protection for air bag control occupant detection

Details Wet seat protection for air bag control occupant detection Wet seat protection for air bag control occupant detection

B - Operations, Transporting

60

R

B60R 21/16 (2006.01) B60N 2/00 (2006.01) B60R 21/01 (2006.01)

Patent

CA 2404380

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 scat. 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 indepensive manner. Environmental sensors are used to make the determination more accurate. Humidity, moisture and/or grounding condition arc detected and used to alter processing, values or calculations.

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