DETECTING DEVICE, POWER RECEIVING DEVICE, CONTACTLESS POWER TRANSMISSION SYSTEM, AND DETECTING METHOD

摘要

Disclosed herein is a detecting device including a coil electromagnetically coupled to the external, a resonant circuit that includes at least the coil, and a detecting section that superimposes a measurement signal for measuring the Q-factor of the resonant circuit on a power transmission signal transmitted to the coil in a contactless manner and removes the power transmission signal from an alternating-current signal obtained by superimposing the measurement signal on the power transmission signal. The detecting section measures the Q-factor by using the alternating-current signal from which the power transmission signal is removed.

主权项

1. A device comprising:
a detection section comprising a circuitry, wherein the circuitry is configured to:
superimpose a measurement signal for measuring a Q-factor of a resonant circuit, that includes at least a coil coupled to an external device, on a power transmission signal transmitted to the coil in a contactless manner; andremove the power transmission signal from an alternating-current signal, obtained by superimposing the measurement signal on the power transmission signal,wherein the detection section is configured to measure the Q-factor by using the alternating-current signal from which the power transmission signal is removed.