JPH0730574A - Remote power supply control system - Google Patents

Abstract

PURPOSE:To automatically control on/off state of a power supply of a node system by monitoring a carrier signal, interrupting the power supply of its own node system when the carrier signal is cleared and allying power when in the ON state. CONSTITUTION:Suppose that all node systems 1, 8, 9 forming a network are deenergized, when an adjacent system 8 is energized in this state, a carrier signal of a relay signal sent therefrom is turned on. When an on-change monitor circuit 3 detects an on-state of the carrier signal consecutively for a predetermined time similarly to the case of monitoring an off-state of the carrier signal, the circuit 3 gives a power-on request signal to a power supply control circuit 4. Upon the receipt of the request signal, the circuit 4 applies the entire power to an exchange processing section 6. When the power of the processing section 6 is applied, the system 1 is in operation and the carrier signal to the adjacent system 9 is sent. Thus, the power-on control of the node system is executed consecutively one after another.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply control system,
In particular, it relates to a remote power control system for a node system that constitutes a network.

[0002]

2. Description of the Related Art Conventionally, power control of a node system is a system for manually turning on and off, or when performing remote control, using a signal line for power control different from the network. It was

[0003]

In the conventional power supply control system, is it necessary to manually turn on or off the power supplies of a large number of node systems forming a network all at once? Alternatively, when performing remote control, it is necessary to lay a separate control network, which poses a problem of a large cost burden.

An object of the present invention is to provide a remote power supply control system capable of automatically controlling ON / OFF of power supply of a node system in the entire network.

[0005]

According to the present invention, each node system that constitutes a network includes an OFF change monitoring circuit and an ON change monitoring circuit, and the OFF change monitoring circuit is provided from an adjacent node system. A relay line signal is branched and input, a carrier signal of the relay line signal is monitored, and it is detected that the carrier signal has changed from an ON state to an OFF state, and a power OFF request signal is sent to the power supply control circuit of the node system. The ON change monitoring circuit detects that the carrier signal has changed from the OFF state to the ON state, and transmits a power ON request signal to the power supply control circuit of the node system to configure the network. Power ON and power O of each node system
A remote power supply control system is obtained which is characterized in that FF control can be performed in a chain.

Further, according to the present invention, each node system constituting the network has an OFF change monitoring circuit and an ON change circuit.
A change monitoring circuit, wherein the OFF change monitoring circuit is
The relay line signal from the adjacent node system is branched and input, the carrier signal of the relay line signal is monitored, and it is detected that this carrier signal has been in the OFF state for a certain period of time from the steady ON state. Then, a power OFF request signal is sent to the power supply control circuit of the node system, and the ON change monitoring circuit detects that the carrier signal has been in the ON state for a certain period of time from the steady OFF state. Then, a power ON request signal is sent to the power supply control circuit of the node system, and the power ON and the power O of each node system forming the network are transmitted.
A remote power supply control system is obtained which is characterized in that FF control can be performed in a chain.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing in detail a node system in a remote power supply control system as an embodiment of the present invention. As shown in FIG. 1, the node system 1 is connected to the node systems 8 and 9, respectively. The node system 1 receives the trunk line signal from the node system 8. This relay line signal is branched and input to the OFF change monitoring circuit 2 and the ON change monitoring circuit 3. At present, it is assumed that the power supplies of the node systems 1, 8 and 9 are ON and the network is in operation. In this state, when the node system 8 which is the adjacent station of the node system 1 is powered off and enters the system stop state, the node system 8
The carrier signal of the relay line signal from the switch is turned off. The OFF change monitoring circuit 2 sends a power OFF request signal to the power supply control circuit 4 when it detects that the OFF change monitoring circuit 2 is constantly in the OFF state for a certain period of time so as not to react hypersensitively due to momentary interruption or the like. Upon receiving the power-off request signal, the power supply control circuit 4 turns off the power supply device 5.

When the power supply device 5 is turned off,
The entire operation of the exchange processing unit 6 including the subscriber accommodation circuit 6-1, the trunk line accommodation circuit 6-2, and the central processing unit 6-3 is stopped. The subscriber accommodation circuit 6-1 and the trunk line accommodation circuit 6-
2 is connected to the central processing unit 6-3. Also,
The two relay line accommodation circuits 6-2 are connected to the node systems 8 and 9, respectively. The subscriber accommodation circuit 6-1 is connected to the subscriber terminal 7.

When the operation of the node system 1 is stopped, the carrier signal of the trunk line signal sent from the node system 1 to the node system 8 is also turned off. The node system 8 also performs the same control as that of the node system 1, and the power OFF control of the node system is sequentially performed in this manner.

Further, it is assumed that the node systems 1, 8 and 9 forming the network are all in the power off state. In this state, the node system 8 of the adjacent station has power
When it is N, the carrier signal of the relay signal to be transmitted is turned on. The ON change monitoring circuit 3 sends a power ON request signal to the power supply control circuit 4 when detecting the ON state of the carrier signal continuously for a certain period of time as in the case of monitoring the OFF state of the carrier signal. When the power control circuit 4 receives the power ON request signal, it turns on the entire power supply of the exchange processing unit 6. When the power of the exchange processing unit 6 is turned on, the node system 1 is put into an operating state and the carrier signal is also sent to the adjacent node system 9. The same control is performed in the node system 9, and the power ON control of the node system is sequentially performed in this manner.

FIG. 2 shows an example of the network configuration of the node system according to the present invention. FIG. 2 shows that by manually turning on or off the power of the node system 10, it is turned on or off in a chained manner from other node systems 11 to the node system 14.

[0013]

As described above, according to the present invention, the carrier signal of the trunk line signal with the adjacent node system is monitored, and if this carrier signal is in the OFF state, the power of the own node system is turned off, and When the power is turned on, the power is turned on, so that the power of the node system in the entire network can be automatically turned on and off.

[Brief description of drawings]

FIG. 1 is a block diagram showing in detail a node system in a remote power supply control system as an embodiment of the present invention. .

FIG. 2 is a block diagram showing a network of a node system according to the present invention.

[Explanation of symbols]

 1,8,9 Node system 2 OFF change monitoring circuit 3 ON change monitoring circuit 4 Power supply control circuit 5 Power supply device 6 Communication processing unit 6-1 Subscriber accommodation circuit 6-2 Relay line accommodation circuit 6-3 Central processing unit 7 Subscription Person terminal 10-14 node system

Claims (2)

[Claims] 1. Each node system that constitutes a network comprises an OFF change monitoring circuit and an ON change monitoring circuit, and the OFF change monitoring circuit branches and inputs a relay line signal from an adjacent node system, and relays the relay line signal. The carrier signal of the line signal is monitored, and when the carrier signal is detected to change from the ON state to the OFF state, a power OFF request signal is sent to the power supply control circuit of the node system. , The carrier signal is OF
Detecting the change from the F state to the ON state, a power ON request signal is sent to the power supply control circuit of the node system, and power ON and power OFF control of each node system forming the network can be performed in a chain. A remote power supply control system characterized in that 2. Each node system forming a network includes an OFF change monitoring circuit and an ON change monitoring circuit, and the OFF change monitoring circuit branches and inputs a relay line signal from an adjacent node system. The carrier signal of the relay line signal is monitored, and it is detected that the carrier signal has been turned off from the steady on state for a certain period of time, and the power off request signal is sent to the power supply control circuit of the node system. And the ON change monitoring circuit detects that the carrier signal has been in the ON state for a certain period of time from the steady OFF state, and sends a power ON request signal to the power control circuit of the node system. Is transmitted, and power ON and power OFF control of each node system constituting the network can be performed in a chain. Remote power control system.