CAPACITIVE ANTI-PINCH MEANS AND METHOD FOR OPERATING AN ANTI-PINCH MEANS

摘要

A capacitive anti-pinch means with a first electrode (2) and a second electrode (3), wherein the first electrode (2) and the second electrode (3) form the electrodes of one sensor, is, as regards a measurement which is independent of a ground potential (M1), characterized in that the first electrode (2) can be fed a first potential (U_ref+), in that the second electrode (3) can be fed a second potential (U_ref−), wherein the second potential (U_ref−) is different from the first potential (U_ref+), and in that said means are equipped with evaluation electronics (5) which determine the difference between the first potential (U_ref+) and the second potential (U_ref−) and determine the capacitance (C_Sensor) of the sensor from said difference. A corresponding method for operating the anti-pinch means (1) is disclosed.