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1. (WO2018177580) DOOR HANDLE ASSEMBLY FOR A MOTOR VEHICLE HAVING A CAPACITIVE SENSOR AND NEAR-FIELD COMMUNICATION

Pub. No.:    WO/2018/177580    International Application No.:    PCT/EP2017/083689
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Thu Dec 21 00:59:59 CET 2017
IPC: H03K 17/96
Applicants: HUF HÜLSBECK & FÜRST GMBH & CO. KG
Inventors: SIEG, Herr Berthold
Title: DOOR HANDLE ASSEMBLY FOR A MOTOR VEHICLE HAVING A CAPACITIVE SENSOR AND NEAR-FIELD COMMUNICATION
Abstract:
The invention relates to a sensor device for a motor vehicle, having a printed circuit board (10; 20; 40), on which a sensor electrode (13; 22; 34) of a capacitive sensor is formed. An inductive near-field transmission device is formed with a near-field transmission coil (11; 21; 30), which has at least one turn on the printed circuit board (10; 20; 40). The near-field transmission coil (11; 21; 30) and the sensor electrode (13; 22; 34) are arranged relative to each other in such a way that the sensor electrode lies in the inner region of the near-field transmission coil surrounded by the turn, the sensor electrode having an elongate central conductor (14) and a plurality of branch conductors (15), which extend from the central conductor. The branch conductors extend out from the central conductor with spacing in such a way that the branch conductors (15) are galvanically coupled exclusively by means of the central conductor (14) and are arranged on the central conductor on opposite sides in pairs such that, for each branch conductor, an associated branch conductor is formed on the opposite side of the central conductor.