Capacitive positioning device
AssigneeRobert Bosch GmbH
InventorsTobias Zibold, Andrej Albrecht
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Abstract
A positioning device for capacitively detecting an object enclosed in a medium includes a measuring electrode, a receiving electrode, and a reference capacitance. The measuring electrode and the receiving electrode form a measuring capacitance that can be influenced by the object and the reference capacitance cannot be influenced by the object. The electrodes are disposed in a plane, and the device includes a spacer that is configured to keep the electrodes at a predetermined minimum distance from the surface of the medium. The predetermined minimum distance is different from zero.
Claims9
A locating appliance for the capacitive detection of an object enclosed in a medium, comprising:
- a measurement electrode arranged in a plane with a reception electrode, the measurement electrode and the reception electrode forming a measurement capacitance configured to be influenced by the object;
- a reference capacitance configured to not be influenced by the object;
- and
- configured to hold the measurement electrode and the reception electrode at a predetermined minimum distance, other than zero, from the surface of the medium.
Dependencies are inferred from the claim text.