JPH0467743A - Power supply controller for local area network - Google Patents

Abstract

PURPOSE:To prevent complification of system and increase of maintenance cost by transmitting an ON/OFF control command of a power supply for a plurality of units on an optical transmission path thereby performing ON/OFF control of the power supply for the plurality of units. CONSTITUTION:Low loss optical fibers 11 composed of glass fibers are arranged unilaterally among network units l-9 for communicating and processing data thus constituting a ring type network. The network units 1-9 are provided with power supply control modules 13-21. A central control unit 23 for the power supply control modules 13-21 is connected with the power supply control unit 13. The central control unit 23 transmits power supply ON/OFF control commands for the network units l-9 on the optical fibers, thus ON/OFF controls the power supply for the network units l-9 designated by the command.

Description

[Detailed Description of the Invention] [Purpose of the Invention (Field of Industrial Application) The present invention relates to a local area network, which is a means of communication that connects distributed computers, etc. at extremely high speed. The present invention relates to a local area network power control device that controls on/off of a local area network.

(Prior Art) In the conventional device for controlling the power supply of the local area network (hereinafter referred to as LAN), as shown in FIG. It forms a ring shape. Further, in the conventional device, each of the network units 51 to 61 has a
Power control devices 65 to 75 that control the power supply of ~61
This is a configuration in which the The above power supply control devices 65 to 7
5 is connected to the central monitoring device 8 via dedicated cables 77 to 87.
9 is connected. The centralized monitoring devices 8 output control signals to the power control devices 65 to 75 in order to control the power on and off of the network units 51 to 61. The power supply control devices 65 to 75 control the network unit 51 by control signals from the eight centralized monitoring devices.
This controls the on/off of the power supplies 61 to 61.

If the dedicated cables 77 to 87 were laid, there was a risk that maintenance costs would increase.

On the other hand, in a conventional device other than providing the dedicated cables 77 to 87, a timer is provided in the power supply control devices 65 to 75, and the timer is set to the network units 51 to 87.
Set the time for supplying power to 61. The power on/off of the network units 51 to 61 is controlled according to the set time. In the above-mentioned conventional device, if communication between the network units 51 to 61 is to be performed when the power is off, maintenance personnel have to forcibly turn on the power.

(Problem to be Solved by the Invention) Since the conventional device is provided with dedicated cables 77 to 87 to control the power supplies of the network units 51 to 61, maintenance costs for the device due to the installation of the dedicated cables 77 to 87 are reduced. There was a risk that this would lead to an increase.

On the other hand, when setting the time to supply power to the network units 51 to 61 in the timer of the power control device 65 to 75, in order to start communication when the power to the network units 51 to 61 is turned off, the power must be turned off. had to be switched on. When forcibly switching the power on as described above, maintenance personnel must
75 are sequentially turned on, it takes time until the power is turned on. Further, since it takes time to switch the power supply, it is not suitable for centrally managing the network units 51 to 61.

The present invention has been made in view of the above, and has an object, for example, to prevent the complexity of the device and the increase in maintenance costs by not providing a dedicated cable, and to control the power supply of the network unit. Our objective is to provide a local area network power control device that centrally manages local area network power.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides a plurality of units that are connected to each other by an optical transmission line and communicate with each other, and a plurality of units that are connected to each other by an optical transmission line. transmission means for transmitting a command indicating on/off control of the power supply of the plurality of units from a monitoring unit that controls the power supply of the plurality of units via the optical transmission path; and a power supply of the unit transmitted by the transmission means. The present invention is summarized as follows: receiving means for receiving a command indicating on/off control of the plurality of units; and control means for controlling the power supply of the plurality of units on/off in response to the command received by the receiving means.

(Function) The local area network power control device with the above configuration is connected by an optical transmission path to multiple units that are connected to each other and communicating through an optical transmission path, and controls the power of the multiple units. A command indicating power on/off control of a plurality of units is transmitted from a monitoring unit via an optical transmission line. Since the transmitted command is received and the power of the plurality of units indicated by the command is turned on and off, it is possible to prevent the device from becoming complicated and increasing maintenance costs.

(Example) Hereinafter, the present invention will be explained in detail using the drawings.

FIG. 1 is a configuration diagram showing an embodiment of the 0-cal area network power supply control device of the present invention.

The above local area network consists of network units 1 to 9 (units) that transmit, receive, and process data.
A ring-shaped network is constructed in which low-loss optical fibers 11 (optical transmission lines) made of glass fiber are arranged in both directions. The network units 1 to 9 are
Power supply control modules 13 to 21 (receiving means, control means) are provided to control the power supplies of the network units 1 to 9, respectively. This power control module 13 to 21
A management device 23 (monitoring section) for controlling and centrally managing the power supply control module 13 is connected to the power supply control module 13. The management device 23 is composed of, for example, a personal computer, and is used to turn on and off the power supply units 31 of the network units 1 to 9, which will be described later, by operations performed by maintenance personnel.

The network unit 3 includes an optical signal transmitting/receiving section 25.
It has a control section 29 and a power supply section 31.

The optical signal transmitting/receiving section 25 includes a transmitting optical splitter 27a that amplifies data transmitted from the network unit 1 via the optical fiber 11 and transmits the amplified data to the network unit 5, as well as outputting the amplified data to the power supply control module 15. The optical signal transmitting/receiving section 25 also includes a receiving optical distributor 27b that amplifies data transmitted from the network unit 5 and transmits the amplified data to the network unit 1, as well as outputting the amplified data to the power supply control module 15.

2. When the power-on command is transmitted from the management device 23 to all network units 1 to 9, the optical signal transmitter/receiver 25 outputs the power to the microprocessor 33 of the power control module 15 via the transmitting optical distributor 27a, and , is output to a control section 29, which will be described later. The power-on command is transmitted from the control section 29 to the optical signal transmitting/receiving section of the network unit 5, and after the same processing as above, is transmitted to the network unit 7 and the network unit 9.

Note that since the power on/off command is similar to data transmission transmitted through a normal optical fiber 11, processing such as setting a new command is not required.

The control unit 29 processes data transmitted through the optical fiber 11 and controls the entire network unit.

The power supply unit 31 supplies power to the network unit, and is controlled by power on/off commands transmitted from the management device 23.

The power control module 15 includes a microprocessor 3
3. Interface section 35. Timer 37, memory 39
and a power switch section 41.

The microprocessor 33 responds to power on/off commands of the management device 23 inputted from the transmitting optical distributor 27a and the receiving optical distributor 27b of the optical signal transmitting/receiving section 25 of the network unit, and activates a power switch section 41 to be described later.
This is to control on/off. Further, the microprocessor 33 controls the entire power supply control module 15.

The interface unit 35 is for exchanging data between the control unit 29 of the network unit 3 and the microprocessor 33 of the power supply control module 15.

The timer 37 sets a time for controlling power supply to the power supply section 31 of the network unit 3, for example.

The memory 39 is composed of, for example, a RAM, and stores data transmitted from the optical fiber 11 at a predetermined address.

The power switch unit 41 supplies an AC voltage (
This is a switch that controls the on/off of AC). That is, when turned on by the microprocessor 33, the power switch section 41 supplies the alternating current voltage AC to the power supply section 31 of the network unit 3, and the network unit 3 starts up.

On the other hand, when the power switch section 41 is turned off by the microprocessor 33, the alternating current voltage AC to the power supply section 31 of the network unit 3 is cut off.

The network unit 3 and power control module 15 described above are connected to other network units 1, 5 to 9.
The power supply control modules 1317 to 21 also have similar configurations.

Next, the operation of this embodiment will be explained using the processing flowchart of FIG. 2 for starting up the network unit.

First, after turning on the power to the management device 23, a maintenance person manually sets a power-on command to start up all of the network units 1 to 9, and then sends the optical signal from the optical signal transmitting/receiving section 25 of the network unit 1 via the optical fiber 11. transmitted. At the same time, the microprocessor 33 connected to the management device 23 turns on the power switch section 41. In the on state, the alternating current voltage AC is supplied to the power supply section 31, and the network unit 1 starts up (step 100).

The command transmitted from the optical fiber 11 is output from the transmission optical distributor 27a of the optical signal transmission section 25 of the network unit 3 to the microprocessor 33 of the power supply control module 15. The microprocessor 33 turns on the power switch section 41 so that the alternating current voltage AC is supplied to the power supply section 31 and the network unit 3
stands up. The command transmitted from the optical signal transmitting/receiving section 25 of the network unit 3 is transmitted to the network unit 5, and the above-described operation is performed to start up the network unit 5. Further, a command is transmitted to network unit 7 and network unit 9 to turn on the power units of network units 7 and 9 (steps 110 to 130).

When the power supply sections 31 of all network units are turned on, the management device 23 outputs a line reorganization command to the control section 29 of the network unit 1. When a line reorganization command is issued, the control unit 29 creates a network configuration table to form a network (step 140).
~150).

Next, the case of shutting down the network unit will be explained.

The management device 23 sets a power off command and transmits it to the power control module 13. According to the transmitted command, the microprocessor of the power supply control module 13
By turning off the power switch section, the power supply section 31
The power to the network unit 1 is cut off and the network unit 1 is turned off. In addition, the power control module is controlled by commands transmitted from the optical fiber 11 to the network unit 3]
-5's microprocessor 33 is powered by the power switch Sochi section 4.
1 is turned off, the work unit 3 is turned off. Furthermore, the network unit 579
will fall as well.

As a result, the power supply of the network unit can be controlled without installing the dedicated cables 77 to 87, thereby preventing an increase in maintenance costs. Furthermore, the management device 23 can realize centralized management of the entire network.

Furthermore, in this embodiment, the management device 23 is built into a personal computer and the power supply control modules 13 to 21 are built into a network unit, thereby making it possible to downsize the device.

Furthermore, in this embodiment, it is also possible to set the power on/off times in the timers 37 of the power control modules 13 to 21 in advance.

As described above, the present invention can be implemented with various modifications within the scope of the invention.

[Effects of the Invention] As explained above, according to the present invention, commands indicating on/off control of the power supplies of a plurality of units are transmitted via an optical transmission line to control the power supplies of the plurality of units, for example. By not providing a dedicated cable, it is possible to prevent the complexity of the device and the increase in maintenance costs, and centrally manage the power supply control of the network.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a local area network power control device of the present invention, FIG. 2 is a flowchart showing the operation of the present invention, and FIG. 3 is a block diagram showing a conventional example. 1 to 9...Network unit 11...Optical fibers 13 to 21...Power control module 23...Management device 25...Optical signal transmitting/receiving section 33...Microprocessor 41...Power switch section

Claims (1)

[Scope of Claims] A plurality of units that are connected to each other by an optical transmission line and communicate with each other, and a monitoring unit that is connected to the plurality of units and the optical transmission line and controls the power supply of the plurality of units. A local area network power control device comprising: a transmission means for transmitting a command indicating power on/off control of the plurality of units from the monitoring unit via the optical transmission path; and a transmission means for transmitting a command to the units transmitted by the transmission means. A local area characterized by comprising: a receiving means for receiving a command indicating on/off control of the power of the plurality of units; and a control means for controlling the power of the plurality of units on/off in response to the command received by the receiving means. Network power control device.