| 摘要 |
The invention relates to instruments of the coded radio control type operating without battery or wires. It comprises an electromagnetic wave generator 1, modulated by a code 2. Wave 4, radiated by the antenna 3. The antenna 5 receives this wave. An electronic system without power supply 7 converts the waves into electrical current, multiplies the voltage and the strength thereof by storing it, in order to supply a radio control system 9, triggered by a detector system 8. A system 6 separates the code of the wave, converts it into current which will modulate the radio control transmitter system. Modulated wave 11, radiated by the antenna 10. An antenna 12 sends the received wave to radio control receivers 13 which send the signal to the decoder 14. The signal 15 corresponds to the triggering of the detector 8. Among the applications may be mentioned the elimination of wires linking the detectors of an alarm. <IMAGE>
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