| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wireless power supply system which prevents reduction in transmission efficiency of power from a transmitter to a receiver. <P>SOLUTION: A transmitting resonant coil 12 transmits power as a field energy, using magnetic field resonance. A receiving resonant coil 22 receives the magnetic field energy transmitted from the transmitting resonant coil 12, using magnetic field resonance. A distance detector 14 detects a distance between the transmitting resonant coil 12 and the receiving resonant coil 22. A transmitting frequency control unit 13 changes a resonance frequency of the transmitting resonant coil 12 into a value that is determined based on the distance detected by the distance detector 14. A received frequency control unit 23 changes the resonance frequency of the receiving resonant coil 22 into a value which is the changed value of the resonance frequency of the transmitting resonant coil 12 and is also the value determined based on the distance detected by the distance detector 14. <P>COPYRIGHT: (C)2011,JPO&INPIT |
