Capacitive sensor array, vehicle component and procedure for operating a Capacitive sensor array

摘要

The invention concerns a capacitive sensor array (1),an emitter electrode (3),a sensor electrode (4) and an evaluation unit linked to the emitter electrode (3)and the sensor electrode (4),where the emitter electrode (3) generates a ground signal (GS) which receives the sensor electrode (4), the ground signal (GS) of the emitter electrode (3) generates a measurement signal (MS) in a receiving branch (11), the measurement signal (MS) includes the ground signal (GS) and a control signal (BS) recorded when operating the sensor array (1),when an object approaches the sensor electrode (4) and/or touches the sensor electrode (4) by the object due to a capacitive coupling of the object to an electrical earth potential (GND2), a coupling of the one-capacity (C) operating signal (BS) into the sensor electrode (4) and into the The measurement signal (MS) is obtained and the evaluation unit (5) is trained to receive the measurement signal (MS) integrated from the sensor electrode (4) in the receiving branch (11) and to distinguish between different types of objects by means of an evaluation of the size of the coupled capacity (C).The invention continues to concern a vehicle component, comprising at least such a capacitive sensor array (1), and a process for operating a capacitive sensor array (1).