Electrode device, circuit arrangement and method for the approach and touch detection

摘要

An electrode device for a capacitive sensor device and a circuit arrangement for a capacitive sensor device for the operation of an electrode device are provided, wherein the electrode device has a first electrode structure with at least one transmitting electrode and at least one receiving electrode, and a second electrode structure with at least one field sensing electrode, wherein the electrode device or the capacitive sensor device can be operated in a first operation mode and in a second operation mode. In addition a method is provided for approach and/or touch detection with a sensor device.

主权项

1. A capacitive sensor device, comprising
a first electrode structure with at least one transmitting electrode and at least one receiving electrode, a second electrode structure with at least one field sensing electrode, and an evaluating device coupled with the first and second electrode structure and configured to operate in a first or a second operation mode, wherein in the first operation mode, the evaluating device controls the first and second electrode structure such that the at least one transmitting electrode receives a first alternating electrical signal and the evaluating device receives a first electric signal can be tapped from the at least one receiving electrode, and in the second operation mode, the evaluating device controls the first and second electrode structure such that the at least one transmitting electrode and the at least one receiving electrode of the first electrode structure each receive an alternating electrical signal and the evaluating device receives a second electric signal from the at least one field sensing electrode.