Capacitive proximity sensor with user
First Claim
1. A sensing system for sensing the proximity of a part of a user to a control input for a vehicle sub-system, the system comprising a transmitter adapted to transmit a signal, a primary receiver adapted to receive the signal via the user as a primary signal, one of the transmitter and primary receiver being adapted to be associated with the user and the other being associated with the control input, a reference receiver adapted to be associated with the user and to receive the signal via the user as a reference signal, and a controller arranged to receive the reference signal and the primary signal and to determine from them said proximity.
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Accused Products
Abstract
A sensing system for sensing the proximity of a part of a user to a control input, such as a control panel (14), for a vehicle subsystem (10), includes a transmitter (26) for transmitting a signal, a primary receivers (22) for receiving the signal via the user as a primary signal and a reference receiver (28) for receiving the signal via the user as a reference signal. One of the transmitter and primary receiver is associated with the user and the other with the control input (14). The reference receiver (28) is associated with the user and a controller (12) is provided to receive and process the primary and reference signals to provide a measure of the proximity between the part of the user and the control input (14).
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Citations
33 Claims
- 1. A sensing system for sensing the proximity of a part of a user to a control input for a vehicle sub-system, the system comprising a transmitter adapted to transmit a signal, a primary receiver adapted to receive the signal via the user as a primary signal, one of the transmitter and primary receiver being adapted to be associated with the user and the other being associated with the control input, a reference receiver adapted to be associated with the user and to receive the signal via the user as a reference signal, and a controller arranged to receive the reference signal and the primary signal and to determine from them said proximity.
Specification