JP6852884B2 - Monitoring systems, monitoring equipment, monitoring methods, and programs - Google Patents

Description

The present invention relates to monitoring systems, monitoring devices, monitoring methods, and programs.

There is a technology to detect a failure using a power line that can supply and communicate with power. For example, Patent Document 1 includes, in an image forming apparatus, a management unit interposed between all power cords, and a plurality of power lines for connecting a plurality of CPUs to a management main unit, respectively, for management. A closed loop is established in which the main body uses the power line as a communication line and returns to the management main body from the management main body via the power line, CPU, internal signal line, another CPU, and another power line. It detects a failure that detects whether or not to do so.

Japanese Unexamined Patent Publication No. 2011-64565

However, in the technique of Patent Document 1, although it is possible to detect whether or not a failure has occurred in the closed loop, it is not possible to specify where in the closed loop the failure has occurred, which is convenient for the user. There was a problem that it was not enough.

An object of the present invention is to provide an information monitoring system, a monitoring device, a monitoring method, and a program that solve the above-mentioned problems.

In the first aspect of the present invention , power is supplied from the power supply, a plurality of power supply units, a plurality of switch units, and the power supply unit to each of the plurality of power supply units via any one of the plurality of switch units. , A power line for communicably connecting each of the plurality of power supply units to the network, a monitoring unit for monitoring each of the plurality of power supply units via the network composed of the power line, and a plurality of the power supply units. The monitoring unit includes a signal line connecting each of the above and the monitoring unit, and the monitoring unit executes a signal communication check with each of the plurality of power supply units and each of the plurality of switch units to perform a plurality of signal communication confirmations. When an abnormality is detected by monitoring each state of the power supply unit, the state of the power line, each state of the plurality of switch units, and the state of the power supply, the plurality of the power supply unit, the power line, and the plurality of the above This is a monitoring system that identifies which of the switch unit and the power supply is in an abnormal state.

A second aspect of the present invention is to supply power to each of the power supply, the plurality of power supply units, the plurality of switch units, and the plurality of power supply units from the power supply via any one of the plurality of switch units. , A power line for communicably connecting each of the plurality of power supply units to the network, a monitoring unit for monitoring each of the plurality of power supply units via the network composed of the power line, and a plurality of the power supply units. The monitoring unit includes a signal line connecting each of the above and the monitoring unit, and the monitoring unit executes a signal communication check with each of the plurality of power supply units and each of the plurality of switch units to perform a plurality of signal communication confirmations. When an abnormality is detected by monitoring each state of the power supply unit, the state of the power line, each state of the plurality of switch units, and the state of the power supply, the plurality of the power supply unit, the power line, and the plurality of the above It is a monitoring device that identifies which of the switch unit and the power supply is in an abnormal state.

A third aspect of the present invention is to supply power to each of the power supply, the plurality of power supply units, the plurality of switch units, and the plurality of power supply units from the power supply via any one of the plurality of switch units. A computer including a power line for communicably connecting each of the plurality of power supply units and a network and a signal line for connecting each of the plurality of power supply units and the monitoring unit is configured by the power line. It has a monitoring process for monitoring each of the plurality of power supply units via the network, and the monitoring process confirms communication of signals to each of the plurality of power supply units and each of the plurality of switch units. The process of executing and monitoring each state of the plurality of power supply units, the state of the power line, the state of each of the plurality of switch units, the state of the power supply, and when an abnormality is detected, the plurality of power supply units, This is a monitoring method including a process of identifying which of the power line, the plurality of switch units, and the power supply is in an abnormal state.

A fourth aspect of the present invention is to supply power to each of the power supply, the plurality of power supply units, the plurality of switch units, and the plurality of power supply units from the power supply via any one of the plurality of switch units. A computer including a power line for communicably connecting each of the plurality of power supply units and a network and a signal line for connecting each of the plurality of power supply units and the monitoring unit is configured by the power line. A monitoring step for monitoring each of the plurality of power supply units via the network is executed, and the monitoring step executes confirmation of signal communication with each of the plurality of power supply units and each of the plurality of switch units. Then, a step of monitoring each state of the plurality of power supply units, the state of the power line, the state of each of the plurality of switch units, and the state of the power supply, and when an abnormality is detected, the plurality of power supply units, said power line, the plurality of the switch unit, a program including a step of identifying one is whether the abnormal state of the power supply.

According to one aspect of the present invention, the convenience of the user can be improved.

It is a system configuration diagram which shows an example of the configuration of the monitoring system which concerns on 1st Embodiment. It is a schematic block diagram which shows an example of the structure of the monitoring apparatus which concerns on 1st Embodiment. It is a schematic block diagram which shows another example of the structure of the monitoring apparatus which concerns on 1st Embodiment. It is a flowchart which shows an example of the monitoring process of the monitoring apparatus which concerns on 1st Embodiment. It is a flowchart which shows an example of the monitoring process of the monitoring device which concerns on 1st Embodiment. It is a flowchart which shows an example of the monitoring process of the monitoring device which concerns on 1st Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment)
FIG. 1 is a system configuration diagram showing an example of the configuration of the monitoring system according to the first embodiment.
The monitoring system SYS includes a monitoring device 1, a first switch unit 2A, a second switch unit 2B, and a hub HB. The first switch unit 2A and the second switch unit 2B are connected to the power supply DG by power lines (PL5, PL6). A power line is a wiring capable of supplying and communicating power. The power supply DG is connected to the network NW. Further, the monitoring device 1 and the first switch unit 2A and the monitoring device 1 and the second switch unit 2B are each connected by a power line. That is, the monitoring device 1 receives power via the first switch unit 2A and the second switch unit 2B connected by using the power line, and the first switch unit 2A and the second switch unit connected by using the power line. 2B, communicate via network NW.
Here, when the first switch unit 2A and the second switch unit 2B are not particularly distinguished in the following description, they are also referred to as a switch unit 2.

Further, the monitoring device 1 is connected to the hub HB by a LAN (Local Area Network) (registered trademark) cable L2. The hub HB is connected to the network NW by the LAN cable L1. That is, the monitoring device 1 communicates via the hub HB and the network NW.
The monitoring device 1 may be connected to the hub HB or the network NW by a wired cable other than the LAN cable, or may be wirelessly connected to the hub HB or the network NW.

The monitoring device 1 is, for example, an electronic device such as a terminal device such as a personal computer (PC) or an information processing device capable of information processing.
The switch unit 2 includes a switch (not shown) for switching on / off the power supply to the monitoring device 1. The switch unit 2 may have a power tap function in addition to the switch.
Further, the switch unit 2 includes a network control unit (not shown). The network control unit manages the IP (Internet Protocol) address and the MAC (Media Access Control) address of the switch unit 2. The IP address is, for example, an IP address capable of communicating with the monitoring device 1. When the network control unit receives the communication confirmation signal (ping request), it responds (ping reply).

FIG. 2 is a schematic block diagram showing an example of the configuration of the monitoring device according to the first embodiment.
The monitoring device 1 includes a power supply monitoring unit 11, a power supply connection unit 12, a power supply module 13, a power supply module 14, a power supply module 15, and a power supply module 16. The power supply monitoring unit 11 includes a diagnostic unit 111 and a network control unit 112. The power supply module 13 includes a power conversion module 131 and a network control unit 132. The power supply modules 14, 15 and 16 are configured to include a power conversion module and a network control unit as in the power supply module 13, but are not shown.

The power supply monitoring unit 11 is, for example, a base management controller (Base Management Controller) and controls the monitoring device 1.
The diagnostic unit 111 is connected to each power supply module by a signal line via the power supply connection unit 12. The diagnostic unit 111 includes a power supply connection unit 12, a power supply module 13, a power supply module 14, a power supply module 15, a power supply module 16, and a power conversion module (for example, a power conversion module 131) included in each power supply module. The state of failure in the network control unit (for example, network control unit 132) included in the power supply module, the switch included in each switch unit 2, and the network control unit included in each switch unit 2 is monitored.

Specifically, the diagnostic unit 111 includes a power supply connection unit 12, a power supply module 13, a power supply module 14, a power supply module 15, a power supply module 16, and a power conversion module (for example, a power conversion module) included in each power supply module. 131), a network control unit (for example, a network control unit 132) included in each power supply module, a switch included in each switch unit 2, and a network control unit included in each switch unit 2 are checked for communication. Thereby, the state of the power supply module of the monitoring device 1 is monitored. More specifically, the diagnostic unit 111 responds (ping reply) when it receives the communication confirmation signal (ping request). In addition, a communication confirmation signal (ping request) is transmitted, and the response (ping reply) is received.

Here, the monitoring of the state of the power supply module means that the power supply system of the monitoring device 1 has (not) failed, the power supply module has (not) failed, or the like. If the power line connecting each module or unit has (or has not) failed, or if the power supply module has a failure, which power supply module has a failure or the power line has a failure. If this occurs, it is necessary to determine (identify) which power line has a failure, and the state in which the connection with the power supply DG (outlet) has (not) failed. ..

The network control unit 112 manages the IP (Internet Protocol) address and the MAC (Media Access Control) address used by the monitoring device 1 for communication with the external device.

The power supply connection unit 12 is an interface for connecting the monitoring device 1 and each power supply module. In the illustrated example, the power supply connection unit 12 is an interface for connecting the power supply monitoring unit 11 and the power supply module.

The power supply module 13 is a power supply unit that supplies electric power to the monitoring device 1. The power supply module 13 is connected to the switch unit 2 by the power line PL1, obtains power from the power supply DG, and supplies the power to the monitoring device 1.
The power conversion module 131 converts the power obtained from the power supply DG from an alternating current (AC) voltage to a direct current (DC) voltage.
The network control unit 132 manages the IP (Internet Protocol) address and the MAC (Media Access Control) address of the power supply module 13. The IP address is, for example, an IP address capable of communicating with the monitoring device 1. When the network control unit 132 receives the communication confirmation signal (ping request), it responds (ping reply).

Since the power supply module 14, the power supply module 15, and the power supply module 16 have the same configuration as the power supply module 13, description thereof will be omitted.
The power supply module 13 and the power supply module 14 are connected to the second switch unit 2B by the power line PL1 and the power line PL2, respectively. The power supply module 15 and the power supply module 16 are connected to the first switch unit 2A by a power line PL3 and a power line PL4, respectively. The power supply module 13, the power supply module 14, the power supply module 15, and the power supply module 16 are connected in parallel to the power supply connection unit 12.

FIG. 3 is a schematic block diagram showing another example of the configuration of the monitoring device 1 according to the first embodiment.
As shown in the figure, the monitoring device 1 may include at least a power supply monitoring unit 11, a power supply module 13, and a power supply module 14.
That is, the monitoring device 1 may include at least a power supply monitoring unit 11 and a plurality of power supply modules.

4 to 6 are flowcharts showing an example of the monitoring process of the monitoring device according to the first embodiment.
In step S101, for example, when a failure occurs in any one of the plurality of power supply modules, the power supply module outputs a failure occurrence notification indicating that the failure has occurred to the diagnosis unit 111. ..
In step S102, the diagnostic unit 111 detects that a failure has occurred in the power supply system based on the failure occurrence notification output from the power supply module. As a result, the following processing is executed. In the following description, when the term "power supply module" is used, it will be described as representing all the power supply modules of the power supply module 13, the power supply module 14, the power supply module 15, and the power supply module 16.

In step S104, the diagnostic unit 111 determines whether or not AC power supply (AC voltage) is supplied to the power supply module.
When AC power is not supplied to the power supply module (step S104: NO), the diagnostic unit 111 executes the process of step S108. On the other hand, when AC power is supplied to the power supply module (step S104: YES), the diagnostic unit 111 executes the process of step S105.
In step S105, the diagnostic unit 111 determines whether or not a PWOK (POWER OK) signal is output from the power supply module. Here, the PWOK signal is a signal that is output when the voltage of the electric power supplied to the power supply module reaches a desired voltage value. The PWOK signal is output when, for example, when the desired voltage value is 3.3V, the voltage value of the power supplied to the power supply module reaches from 0V to 3.3V.
When the PWOK signal is not output from the power supply module (step S105: NO), the diagnostic unit 111 executes the process of step S107. On the other hand, when the PWOK signal is output from the power supply module (step S105: YES), the diagnostic unit 111 executes the process of step S106.

In step S106, the diagnostic unit 111 determines that there is no failure in the power supply system, that is, the power supply system is normal, and ends the monitoring process.
In step S107, the diagnostic unit 111 determines that a failure has occurred in the power supply module that does not output the PWOK signal, and identifies the power supply module as the power supply module in which the failure has occurred. Then, the monitoring process is terminated.
In step S108, the diagnostic unit 111 determines that a failure related to power supply other than the power supply module has occurred.
In step S109, the diagnostic unit 111 confirms communication with each switch unit 2 and the power supply module.

In step S110, the diagnostic unit 111 determines whether or not a response (ping reply) has been received from all the switch units 2 and all the power supply modules. When a response (ping reply) is received from all the switch units 2 and all the power supply modules (step S110: YES), the diagnostic unit 111 executes the process of step S106. On the other hand, when no response (ping reply) has been received from all the switch units 2 and all the power supply modules (step S110: NO), the diagnostic unit 111 executes the process of step S111.

In step S111, the diagnostic unit 111 determines whether or not a response (ping reply) from the first switch unit 2A has been received. When the response (ping reply) from the first switch unit 2A is received (step S111: YES), the diagnostic unit 111 executes the process of step S115. On the other hand, when the response (ping reply) from the first switch unit 2A is not received (step S111: NO), the diagnostic unit 111 executes the process of step S112.

In step S112, the diagnostic unit 111 determines whether or not a response (ping reply) from the second switch unit 2B has been received. When the response (ping reply) from the second switch unit 2B is received (step S112: YES), the diagnostic unit 111 executes the process of step S113. On the other hand, when the response (ping reply) from the second switch unit 2B is not received (step S112: NO), the diagnostic unit 111 executes the process of step S114.
In step S113, the diagnostic unit 111 determines that a failure has occurred in the first switch unit 2A, and executes the process of step S120.
In step S114, the diagnostic unit 111 determines that a failure has occurred in the connection with the outlet, that is, the power supply DG, and executes the process of step S120.

In step S115, the diagnostic unit 111 determines whether or not a response (ping reply) from the power supply module 15 has been received. When the response (ping reply) from the power supply module 15 is received (step S115: YES), the diagnostic unit 111 executes the process of step S117. On the other hand, when the response (ping reply) from the power supply module 15 is not received (step S115: NO), the diagnostic unit 111 executes the process of step S116.
In step S116, the diagnostic unit 111 determines that a failure has occurred in the power line PL3 between the first switch unit 2A and the power supply module 15, and executes the process of step S120.

In step S117, the diagnostic unit 111 determines whether or not a response (ping reply) from the power supply module 16 has been received. When the response (ping reply) from the power supply module 16 is received (step S117: YES), the diagnostic unit 111 executes the process of step S106. On the other hand, when the response (ping reply) from the power supply module 16 is not received (step S117: NO), the diagnostic unit 111 executes the process of step S118.
In step S118, the diagnostic unit 111 determines that a failure has occurred in the power line PL4 between the first switch unit 2A and the power supply module 16, and executes the process of step S120.

In step S120, the diagnostic unit 111 determines whether or not a response (ping reply) from the second switch unit 2B has been received. When the response (ping reply) from the second switch unit 2B is received (step S120: YES), the diagnostic unit 111 executes the process of step S124. On the other hand, when the response (ping reply) from the second switch unit 2B is not received (step S120: NO), the diagnostic unit 111 executes the process of step S121.

In step S121, the diagnostic unit 111 determines whether or not a response (ping reply) from the first switch unit 2A has been received. When the response (ping reply) from the first switch unit 2A is received (step S121: YES), the diagnostic unit 111 executes the process of step S122. On the other hand, when the response (ping reply) from the first switch unit 2A is not received (step S121: NO), the diagnostic unit 111 executes the process of step S123.
In step S122, the diagnostic unit 111 determines that a failure has occurred in the second switch unit 2B, and ends the monitoring process.
In step S123, the diagnostic unit 111 determines that a failure has occurred in the connection with the outlet, that is, the power supply DG, and ends the monitoring process.

In step S124, the diagnostic unit 111 determines whether or not a response (ping reply) from the power supply module 13 has been received. When the response (ping reply) from the power supply module 13 is received (step S124: YES), the diagnostic unit 111 executes the process of step S126. On the other hand, when the response (ping reply) from the power supply module 13 is not received (step S124: NO), the diagnostic unit 111 executes the process of step S125.
In step S125, the diagnostic unit 111 determines that a failure has occurred in the power line PL1 between the second switch unit 2B and the power supply module 13, and ends the monitoring process.

In step S126, the diagnostic unit 111 determines whether or not a response (ping reply) from the power supply module 14 has been received. When the response (ping reply) from the power supply module 14 is received (step S126: YES), the diagnostic unit 111 executes the process of step S106. On the other hand, when the response (ping reply) from the power supply module 14 is not received (step S126: NO), the diagnostic unit 111 executes the process of step S127.
In step S127, the diagnostic unit 111 determines that a failure has occurred in the power line PL2 between the second switch unit 2B and the power supply module 14, and ends the monitoring process.

According to FIGS. 4, 5 and 6, it is possible to identify a failure in the switch unit 2, a failure in the power supply DG, a failure in the wiring of each unit or module, or a failure in the power supply module. Since the burden of visual maintenance by the maintenance staff can be reduced, the convenience of the user can be improved.

As described above, according to the first embodiment, the monitoring system SYS has a plurality of power supply units (power supply module 13, power supply module 14, power supply module 15, power supply module 16) and a plurality of power supply units (power supply module 13, power supply module 13,). Power is supplied to each of the power supply module 14, the power supply module 15, and the power supply module 16), and each of the plurality of power supply units (power supply module 13, power supply module 14, power supply module 15, power supply module 16) can communicate with the network. Each of the power lines (PL1, PL2, PL3, PL4) to be connected and the plurality of power supply units (power supply module 13, power supply module 14, power supply module 15, power supply module 16) via a network different from the network composed of the power line. A monitoring unit (power supply monitoring unit 11) for monitoring the above is provided.

According to such a configuration, since the self-diagnosis of the power failure in the monitoring system becomes possible, remote work from a remote place or the like becomes possible, and the convenience of the user can be improved. Further, by using the power line, it is not necessary to use a new communication cable or the like, the initial cost can be reduced, and the convenience of the user at the time of wiring can be improved. It is also possible to monitor which of the plurality of power supply units has a failure.

In the first embodiment, as the first path, communication is confirmed from the monitoring device 1 to the first switch unit 2A and / or the second switch unit 2B, the power line PL5, and / or the power line PL6, and the power supply DG. However, as a second route, the monitoring device 1 to the LAN cable L2, the hub HB, the LAN cable L1, the network NW, the power supply DG, the power line PL5, and / or the power line PL6, the first switch have been described. Communication confirmation may be performed via unit 2A and / or second switch unit 2B. That is, the monitoring device 1 may execute the communication confirmation on one or both of the first route and the second route.
When the communication confirmation is executed using either one route, the communication confirmation can be executed in the other route even if the communication confirmation cannot be executed in one of the routes.
In addition, when performing communication confirmation using both routes, one of them is determined by comparing the faulty part specified in the first route with the faulty part specified in the second route. It is possible to identify the faulty part in more detail than when the communication confirmation is executed by the route of.
Specifically, for example, when there is a response from the first switch unit 2A in the communication confirmation in the first route and there is no response from the first switch unit 2A in the communication confirmation in the second route, the monitoring device. 1 can identify that a failure has occurred in the power line PL5 by comparing and determining the communication confirmation result in the first route and the communication confirmation result in the second route.

In addition, the program operating by the monitoring device 1 in one aspect of the present invention includes a CPU (Central Processing Unit) or the like so as to realize the functions shown in the above-described embodiments and modifications related to the one aspect of the present invention. It may be a program to control (a program to operate a computer). Then, the information handled by each of these devices is temporarily stored in RAM (Random Access Memory) at the time of processing, and then stored in various ROMs such as Flash ROM (Read Only Memory) and HDD (Hard Disk Drive). Then, if necessary, the CPU reads, corrects, and writes.

In addition, a part of the monitoring device 1 in each of the above-described embodiments and modifications may be realized by a computer. In that case, the program for realizing this control function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by the computer system and executed.

The "computer system" referred to here is a computer system built in the monitoring device 1, and includes hardware such as an OS and peripheral devices. Further, the "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, or a CD-ROM, or a storage device such as a hard disk built in a computer system.

Furthermore, a "computer-readable recording medium" is a medium that dynamically holds a program for a short period of time, such as a communication line when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In that case, a program may be held for a certain period of time, such as a volatile memory inside a computer system serving as a server or a client. Further, the above-mentioned program may be a program for realizing a part of the above-mentioned functions, and may be a program for realizing the above-mentioned functions in combination with a program already recorded in the computer system.

Further, a part or all of the monitoring device 1 in each of the above-described embodiments and modifications may be realized as an LSI that is typically an integrated circuit, or may be realized as a chipset. Further, each functional block of the monitoring device 1 in each of the above-described embodiments and modifications may be individually chipped, or a part or all of them may be integrated into a chip. Further, the method of making an integrated circuit may be realized not only by an LSI but also by a dedicated circuit and / or a general-purpose processor. Further, when an integrated circuit technology that replaces an LSI appears due to advances in semiconductor technology, it is also possible to use an integrated circuit based on this technology.

As described above, as one aspect of the present invention, each embodiment and modification have been described in detail with reference to the drawings, but the specific configuration is not limited to each embodiment and modification, and deviates from the gist of the present invention. It also includes design changes that are not included. In addition, one aspect of the present invention can be variously modified within the scope of the claims, and the technical aspects of the present invention are also obtained by appropriately combining the technical means disclosed in the different embodiments. Included in the range. Further, the elements described in each of the above-described embodiments and modifications, and the configurations in which the elements having the same effect are replaced with each other are also included.

SYSTEM monitoring system 1 Monitoring device 11 Power supply monitoring unit 111 Diagnosis unit 112 Network control unit 12 Power supply connection unit 13, 14, 15, 16 Power supply module 131 Power conversion module 132 Network control unit HB hub NW network 2A 1st switch unit 2B 2nd Switch unit 2 Switch unit PL1, PL2, PL3, PL4, PL5, PL6 Power line DG power supply

Claims (5)

Power supply and
With multiple power supplies
With multiple switches
A power line that supplies power from the power supply to each of the plurality of power supply units via any one of the plurality of switch units and connects each of the plurality of power supply units to a network so as to be communicable.
A monitoring unit that monitors each of the plurality of power supply units via the network composed of the power lines, and a monitoring unit.
A signal line connecting each of the plurality of power supply units and the monitoring unit, and
Equipped with a,
The monitoring unit
Checking the communication of signals to each of the plurality of power supply units and each of the plurality of switch units is performed to confirm the communication of each of the plurality of power supply units, the state of the power line, and the state of each of the plurality of switch units. , Monitor the status of the power supply,
When an abnormality is detected, it is specified which of the plurality of power supply units, the power line, the plurality of switch units, and the power supply is in an abnormal state.
Monitoring system. The monitoring system according to claim 1 , wherein the monitoring unit executes communication confirmation using one or both of a first route and a second route different from the first route. Power supply and
With multiple power supplies
With multiple switches
A power line that supplies power from the power supply to each of the plurality of power supply units via any one of the plurality of switch units and connects each of the plurality of power supply units to a network so as to be communicable.
A monitoring unit that monitors each of the plurality of power supply units via the network composed of the power lines, and a monitoring unit.
A signal line connecting each of the plurality of power supply units and the monitoring unit, and
Equipped with a,
The monitoring unit
By executing signal communication confirmation with each of the plurality of power supply units and each of the plurality of switch units, the state of each of the plurality of power supply units, the state of the power line, and the state of each of the plurality of switch units are executed. , Monitor the state of the power supply,
When an abnormality is detected, it is specified which of the plurality of power supply units, the power line, the plurality of switch units, and the power supply is in an abnormal state.
Monitoring device. Power is supplied from the power supply, a plurality of power supply units, a plurality of switch units, and the power supply unit to each of the plurality of power supply units via any one of the plurality of switch units, and with each of the plurality of power supply units. A computer including a power line for communicably connecting to a network and a signal line for connecting each of the plurality of power supply units and the monitoring unit .
A monitoring process in which each of the plurality of power supply units is monitored via the network composed of the power lines.
Have ,
The monitoring process
By executing signal communication confirmation with each of the plurality of power supply units and each of the plurality of switch units, the state of each of the plurality of power supply units, the state of the power line, and the state of each of the plurality of switch units are executed. , The process of monitoring the state of the power supply,
A monitoring method including a process of identifying which of a plurality of the power supply units, the power line, the plurality of switch units, and the power supply is in an abnormal state when an abnormality is detected. Power is supplied from the power supply, a plurality of power supply units, a plurality of switch units, and the power supply unit to each of the plurality of power supply units via any one of the plurality of switch units, and with each of the plurality of power supply units. A computer including a power line for communicably connecting to a network and a signal line for connecting each of the plurality of power supply units and the monitoring unit .
A monitoring step for monitoring each of the plurality of power supply units via the network composed of the power lines is executed.
The monitoring step
By executing signal communication confirmation with each of the plurality of power supply units and each of the plurality of switch units, the state of each of the plurality of power supply units, the state of the power line, and the state of each of the plurality of switch units are executed. , The step of monitoring the state of the power supply,
When an abnormality is detected, it includes a step of identifying which of the plurality of power supply units, the power line, the plurality of switch units, and the power supply is in an abnormal state.
Program.

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