Capacitive anti-pinch means and method for operating an anti-pinch means

A capacitive auto reverse means, comprising:

• a first electrode and a second electrode, the first electrode and the second electrode forming the electrodes of a sensor, wherein the first electrode is fed with a first potential (Uref+), the second electrode (3) is fed with a second potential (Uref−), the second potential (Uref−) being different from the first potential (Uref+), and wherein evaluation electronics is provided, which determines the difference between the first potential (Uref+) and second potential (Uref−) and determines the capacitance (CSensor) of the sensor from said difference.

A method for operation of an auto reverse with a first electrode and a second electrode, in which the first electrode and the second electrode form electrodes of a sensor, said method comprising:

• supplying the first electrode with a first potential (Uref+), and supplying the second electrode with a second potential (Uref−), the second potential (Uref−) being different from the first potential (Uref+), wherein the difference between the first potential (Uref+) and the second potential (Uref−) is determined and wherein a capacitance (CSensor) of the sensor is determined from said difference.