| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power supply system capable of selectively supplying power to apparatuses. <P>SOLUTION: The power supply system 1 includes a power transmitter 21, a power receiver 31 and a relay device 41. The power supply system 1 is used for e.g. an automatic door system. The power supply system 1 supplies power to the power receiver 31 from the power transmitter 21 via the relay device 41. The power transmitter 21 has a power-transmission-side magnetic field generating means M211; a control means M213; and a power transmission side resonant frequency switching means M215. The power receiver 31 has a power-reception side magnetic field generating means M311 and a power-reception side resonant frequency switching means M315. The relay device 41 has a first magnetic field generating means M411; a first resonance frequency switching means M413; a second resonant magnetic field generating means M415; a second resonant frequency switching means M417; and a control means M419. Thus, power can be supplied only to the power receiver which attempts to supply power via the relay device. <P>COPYRIGHT: (C)2010,JPO&INPIT |
