AUTOMOBILE DOOR HANDLE WITH SENSOR ARRANGEMENT FOR DETECTING THE PRESSING OF A USER BODY PART ON A SENSOR SURFACE

摘要

A sensor arrangement serves for detecting the pressing of a user body part (11) on a sensor surface (13), for example, for detecting the pressing of a finger on an operating point of a motor vehicle door handle. A piezo-oscillator (4) is coupled to an oscillator circuit (14) and connected to the sensor surface (13) such that the oscillation property is altered by the pressing of the body part (11) on the sensor surface (13). The oscillator circuit is connected to an analytical circuit (15) such as to record the change in oscillation property and an output signal (17) displaying the same can be generated. The above permits an operating signal of unlimited duration to be obtained on a continuing pressing and thus a secure detection of the pressing of the user body part during the total pressing duration.