Bsh Bosch Und Siemens Hausgeraete Gmbh

Bsh Bosch Und Siemens Hausgerate Gmbh

Jörg Grosser

Bernward Reinker

Wilfried Klopfer

Frank Böldt

Hans-Jürgen Romanowski

A capacitive proximity switch has an electrically conductive sensor surface, which is covered by an electrically non-conductive covering plate and which serves as a part of a capacitor with a capacitance that varies with proximity. The proximity switch includes a reference sensor surface for generating a reference signal for determining an actuation state of the proximity switch. Signal portions of the reference signal are proportional to the capacitance of a reference capacitor formed with the reference sensor surface, and the capacitance of the reference capacitor is determined by surrounding conditions of the sensor surface.

Capacitive proximity switch and household appliance equipped therewith

A capacitive proximity switch has an electrically conductive sensor surface, which is covered by an electrically non-conductive covering plate and which serves as a part of a capacitor with a capacitance that varies with proximity. A household appliance is equipped with a proximity switch of this type. The sensor surface has an active shielding, which is formed by a shielding surface to which a clock signal is applied at the same time as it is applied to the sensor surface.

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Bad Abbach, Germany

Jörg Grosser