Patent ID: 11966543
Assignee: BSH HAUSGERäTE GMBH
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 5:
6. A method for controlling a household appliance, which comprises the steps of:
providing a control signal with a predetermined frequency on a sensor surface;
providing a sensor signal dependent on a capacitance of the sensor surface;
determining measuring noise by an evaluation device at different predetermined frequencies, the measuring noise being determined using a secondary frequency only when the measuring noise determined using a primary frequency exceeds a predetermined threshold, the predetermined threshold being absolute or relative with respect to the sensor signal;
interrupting a determination of the sensor signal when the sensor surface is excited with a primary frequency, in order to determine the measuring noise when the sensor surface is excited with a secondary frequency, the interruptions taking place periodically;
selecting a frequency of the control signal in order to determine the sensor signal in dependence on the measuring noise determined; and
controlling a consumer in dependence on a determined touch.