发明名称 |
NON-CONTACT TRANSMITTING DEVICE AND ITS PASSIVE DEVICE |
摘要 |
PROBLEM TO BE SOLVED: To make transmission power constant regardless of the fluctuation of a transmission distance and also to enable the stable transmission of operation power with a simple circuit configuration by allowing an active module transmitting power to automatically control a power transmission output on the basis of the receiving strength of an information signal received from a passive module. SOLUTION: An active module A transmits power and an information signal including a command control signal from the power transmitting head 4 of a power transmitting part including an oscillation circuit of a frequency for power transmission and transmits the power and the command control signal to a passive module B at a relatively adjacent distance in an non-contact way due to electromagnetic inductive coupling and optical coupling. The module B uses power supplied to a power receiving head 5 as power supply for operation. The module B further transmits a detection signal of signal strength related to the receiving strength of the information signal and receiving power variation as FM waves from a signal transmitting head 11 to the module A. The module A receives the FM waves and performs the output control of an oscillation circuit 1 in accordance with a detection signal extracted by demodulating the FM waves. |
申请公布号 |
JP2001053657(A) |
申请公布日期 |
2001.02.23 |
申请号 |
JP20000205686 |
申请日期 |
2000.07.06 |
申请人 |
NIPPON SYSTEM KENKYUSHO:KK;MATSUSHITA AKIRA |
发明人 |
NAKANO KATSUYOSHI;MATSUSHITA AKIRA |
分类号 |
H04B7/005;G06K17/00;G06K19/07;G08C17/00;H02J17/00;H04B1/40;H04B1/59;H04B5/02;H04B7/26;H04B10/00;H04B10/22 |
主分类号 |
H04B7/005 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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