| 发明名称 |
DETECTING DEVICE, POWER RECEIVING DEVICE, CONTACTLESS POWER TRANSMISSION SYSTEM, AND DETECTING METHOD |
| 摘要 |
<P>PROBLEM TO BE SOLVED: To detect a metal foreign substance present near a coil without newly providing a sensor and enhance the accuracy of the detection. <P>SOLUTION: A detecting section 26 of a detecting device 20 superimposes a measurement signal for measuring the Q-factor of a resonant circuit, which includes at least a coil 21, on a power transmission signal transmitted to the coil 21 in a contactless manner. Then, a transmission carrier removing filter portion 33 of the detecting section 26 removes the power transmission signal from an alternating-current signal where the measurement signal is superimposed on the power transmission signal, and a Q-factor measuring circuit 34 measures the Q-factor by use of the alternating-current signal from which the power transmission signal is removed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
| 申请公布号 |
JP2013115981(A) |
申请公布日期 |
2013.06.10 |
| 申请号 |
JP20110261816 |
申请日期 |
2011.11.30 |
| 申请人 |
SONY CORP |
发明人 |
BUNZEN KEIGO;NAKANO HIROAKI;MURAKAMI TOMOMICHI;FUKUDA SHINICHI |
| 分类号 |
H02J17/00;H01M10/46;H02J7/00 |
主分类号 |
H02J17/00 |
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