| 摘要 |
PURPOSE:To prevent previously the breakdown of a battery within a solar battery power supply device by providing a confirmation signal send-back function which works in a stop control mode to a repeater station device and therefore attaining an assured repeating stop action. CONSTITUTION:A receiver 5, a transmitter 6, a control signal check circuit 10, a stop signal check circuit 9, a logical circuit 14, a power supply control circuit 13, etc. are provided to a repeater station device which relays the control signal given from a control station device of a remote monitor controller to a device of a station to be controlled. In addition, a power supply state confirming circuit 17 containing a timer circuit 18, an oscillator 19, a switch SW6, etc. is added to the repeater station device. When a stop signal is received by the receiver 5, a power supply cut-off command is delivered to the circuit 17 from the circuit 13. The oscillator 19 is started when the time set to the circuit 18 elapses according to said power supply cut-off command. Thus the power supply to a modulator 7 and the transmitter 6 is cut off, and therefore the transmission of a tone signal to a device of a control station is stopped. When a start signal is received, switches SW3, 4 and 6 are started by the circuit 13. Then the tone signal given from the circuit 17 is transferred to the device of the control station. |
