POWER-LINE CARRIER CONTROLLER
PURPOSE:To obtain a power-line carrier controller simplifying the circuit constitution of a subsidiary station by equipping a plurality of subsidiary stations with subsidiary station receiving circuits composed of first resonance output circuits having mutually different resonance frequencies and wi...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PURPOSE:To obtain a power-line carrier controller simplifying the circuit constitution of a subsidiary station by equipping a plurality of subsidiary stations with subsidiary station receiving circuits composed of first resonance output circuits having mutually different resonance frequencies and with load-condition transmitting circuits having resonance circuits with respectively different resonance frequencies between power lines. CONSTITUTION:When a control signal corresponding to a specific subsidiary station 3 is outputted from the controller of a master station, the control signal is conveyed to all subsidiary stations via power lines 2a, 2b. First resonance output circuits 31-1, 31-2 of the subsidiary station receiving circuit 31 of the subsidiary station 3 send a resonance output as load control signal to a load 5 for control. Also, when a condition signal for operating a load-condition transmitting circuit 32 is inputted to the subsidiary station 3 from the load 5, a carrier signal from the master station conveyed via the power lines 2a, 2b is transmitted by return to the master station while resonating with the load-condition transmitting circuit 32 of the subsidiary station 3 to resonate the specific second resonance output circuit of a master station receiving circuit and the master station detects that the condition signal is inputted from the load 5 to the subsidiary station 3. |
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