| 摘要 |
The invention relates to a capacitive sensor device, comprising an electrode system, comprising a first transmitting electrode and a first reception electrode, wherein the first transmitting electrode can be brought into capacitive coupling with the first reception electrode, and -a second transmitting electrode and a second reception electrode, wherein the second transmitting electrode can be brought into capacitive coupling with the second reception electrode, -a signal generator for feeding the first transmitting electrode with a first electric alternating signal and the second transmitting electrode with a second electric alternating signal, and -a signal processing device, which is coupled with the first reception electrode and with the second reception electrode, and which is adapted to form a first measurement variable from the difference between a first electric value tapped at the first reception electrode and a second electric value tapped at the second reception electrode. The invention also relates to a method for the approximation detection of an object with a capacitive sensor device according to the invention. |
