This steering-wheel heater device contains the following: a steering-wheel heater comprising an electrical resistor that produces heat from electrical energy; an inductor; one or more switches; and a sensor circuit. The inductor is connected in series to a first terminal on the steering-wheel heater. The one or more switches turn the supply of power to the steering-wheel heater on and off. The sensor circuit is electrically connected to the aforementioned first terminal and determines the presence or absence of contact between a steering wheel and a detection target on the basis of the magnitude of the capacitance of the steering-wheel heater. The one or more switches consist of a switch that is connected in series to the first terminal of the steering-wheel heater via the inductor and/or a switch that is connected in series to a second terminal on the steering-wheel heater.
Steering-wheel heater device
25.11.2015
Patent
Elektronische Ressource
Englisch
IPC: | B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / H05B ELECTRIC HEATING , Elektrische Heizung / B62D MOTOR VEHICLES , Motorfahrzeuge |