An object detecting device includes a coil array including coils, short-circuit switches connected in parallel with the coils, an oscillator circuit that outputs, to the coils, a voltage including an alternating current component, selection switches connected between the coils and the oscillator circuit, a detecting circuit that detects an object based on a change in a physical value such as voltage, and a control circuit that opens and closes the short-circuit switches and the selection switches. When a first selection switch is closed, a first short-circuit switch, which is connected to the first selection switch, is opened. The other selection switches are opened, and the other short-circuit switches are closed.
FOREIGN OBJECT DETECTING DEVICE, WIRELESS POWER TRANSMITTING DEVICE, AND WIRELESS POWER TRANSMISSION SYSTEM
FREMDKÖRPERERKENNUNGSVORRICHTUNG, VORRICHTUNG ZUR DRAHTLOSEN STROMÜBERTRAGUNG UND SYSTEM ZUR DRAHTLOSEN STROMÜBERTRAGUNG
DISPOSITIF DE DÉTECTION D'OBJET ÉTRANGER, DISPOSITIF ET SYSTÈME DE TRANSMISSION DE PUISSANCE SANS FIL ET SYSTÈME DE TRANSMISSION DE PUISSANCE SANS FIL
2018-10-17
Patent
Electronic Resource
English
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