SENSOR ELEMENT ARRANGEMENT FOR A CONTROL DEVICE AND METHOD FOR OPERATING SUCH A SENSOR ELEMENT ARRANGEMENT
First Claim
1. A sensor element arrangement for a control device, said sensor element arrangement having a conductive coating as capacitive sensor element for detecting an approach of an operator'"'"'s finger or some similar object and having a support for said conductive coating as said capacitive sensor element, wherein said conductive coating is placed on said support and wherein said support is an electroluminescent foil.
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Accused Products
Abstract
A sensor element arrangement beneath a control surface is provided with an electroluminescent foil with a lower electrode and an upper electrode for activating the electroluminescent foil. The upper electrode also serves as a capacitive sensor element in order to detect as a control or operation when a finger is applied to the control surface above the electroluminescent foil or the capacitive sensor element, respectively. For this purpose, a suitable control and evaluating circuit is provided with a control in a full bridge circuit for detecting a sensor current flowing out across the upper electrode and the finger.
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Citations
22 Claims
- 1. A sensor element arrangement for a control device, said sensor element arrangement having a conductive coating as capacitive sensor element for detecting an approach of an operator'"'"'s finger or some similar object and having a support for said conductive coating as said capacitive sensor element, wherein said conductive coating is placed on said support and wherein said support is an electroluminescent foil.
- 10. A method for evaluating a capacitive sensor element of an sensor element arrangement for a control device, said sensor element arrangement having a conductive coating as capacitive sensor element for detecting an approach of an operator'"'"'s finger or some similar object and having a support for said capacitive sensor element, wherein said conductive coating is placed on said support, wherein said support is an electroluminescent foil.
Specification