Capacitive sensing system
First Claim
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1. A combined heating system and occupant sensing system for a vehicle seat, comprising:
- first and second electrodes electrically connected in series; and
a controller configured to direct a same heating current to the first and second electrodes,wherein the controller is configured to isolate the first and second electrodes from the heating current and, at the same time, provide a sensing current to only one of the first and second electrodes.
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Abstract
A combined heating system and occupant sensing system for a vehicle seat includes first and second electrodes connected in series and a controller configured to direct a heating current to the first and second electrodes. The controller is configured to isolate the first and second electrodes from the heating current and, at the same time, provide a sensing current to only one of the first and second electrodes.
9 Citations
17 Claims
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1. A combined heating system and occupant sensing system for a vehicle seat, comprising:
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first and second electrodes electrically connected in series; and a controller configured to direct a same heating current to the first and second electrodes, wherein the controller is configured to isolate the first and second electrodes from the heating current and, at the same time, provide a sensing current to only one of the first and second electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 16)
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11. A combined heating system and occupant sensing system for a vehicle seat comprising:
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first and second electrodes electrically connected in series; and a controller configured to direct a same heating current to the first and second electrodes, wherein the controller is configured to isolate the first and second electrodes from the heating current and, at the same time, provide a sensing current to only one of the first and the second electrodes, wherein there is an impedance between the second electrode and a node and the controller is configured to provide a shield signal to the node, and wherein a substantially high impedance is coupled between the first and second electrodes. - View Dependent Claims (12, 13, 14, 15, 17)
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Specification