Migration work method for facility monitoring system, and facility monitoring system

Abstract

To provide a transition work method of a facility monitoring system capable of easily and efficiently performing transition work for removing a monitoring device from the facility monitoring system and introducing a new monitoring device into the facility monitoring system.SOLUTION: A migration work method for a facility monitoring system includes a first step of connecting a branch adapter 8 for branching an input between an old device and a signal line 7 through which a signal indicating a state of a facility to be monitored by the old device passes, a second step of connecting a new device to the branch adapter 8, a third step of sending information indicated by a signal input from the signal line 7 to the branch adapter 8 to each of the old device and the new device, and a fourth step of disconnecting the old device from the branch adapter 8.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a migration construction method for an equipment monitoring system that monitors multiple pieces of equipment, and the equipment monitoring system. [Background technology]

[0002] In equipment monitoring systems that monitor multiple pieces of equipment using one or more monitoring devices, migration work is sometimes performed to remove the monitoring devices from the equipment monitoring system and install new monitoring devices. Such migration work requires work such as rewiring the wiring so that information input into the monitoring device to be removed can be sent to the new monitoring device. Typically, monitoring devices are connected to many signal lines that carry signals indicating the status of each piece of equipment, so rewiring the signal lines during equipment monitoring system migration work is cumbersome and time-consuming.

[0003] Patent Document 1 discloses an information processing system in which a shared disk device is connected to an active server, which is a server operating to provide a service, and a standby server, which is a server in a standby state, and discloses that when a switchover between the active server and the standby server is requested, the server is switched over before the active server's access request to the shared disk device is completed, and the new active server starts providing the service. The information processing system disclosed in Patent Document 1 transfers access requests to the shared disk device from the new active server to the old active server, which is the new standby server, until the access requests to the shared disk device from the old active server are completed. The information processing system disclosed in Patent Document 1 can start providing the service on the new active server in parallel with the termination processing of the application running on the old active server, thereby shortening the service downtime. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-67367 Summary of the Invention [Problem to be solved by the invention]

[0005] The technologies disclosed in Patent Document 1 all make it possible to switch between servers that are operated between servers connected to a shared disk device, but the migration work of removing a server and introducing a new server into an information processing system remains an issue of being cumbersome and time-consuming.

[0006] The present disclosure has been made in consideration of the above, and aims to provide a method for migrating an equipment monitoring system, which enables easy and efficient migration work to remove a monitoring device from the equipment monitoring system and introduce a new monitoring device into the equipment monitoring system. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems and achieve the objectives, the migration construction method for an equipment monitoring system according to the present disclosure is a migration construction method for an equipment monitoring system that monitors multiple pieces of equipment using one or more monitoring devices, in which at least one monitoring device, an old device, is removed from the equipment monitoring system and a new device, a newly added monitoring device, is introduced into the equipment monitoring system. The migration construction method for an equipment monitoring system according to the present disclosure includes a first step of connecting a branch adapter that branches the input between the old device and a signal line through which a signal indicating the status of the equipment monitored by the old device passes, a second step of connecting the new device to the branch adapter, a third step of sending information indicated in the signal input from the signal line to the branch adapter to each of the old device and the new device, and a fourth step of disconnecting the old device from the branch adapter. [Effects of the Invention]

[0008] The migration work method for an equipment monitoring system according to the present disclosure has the advantage of being able to easily and efficiently perform migration work in which a monitoring device is removed from the equipment monitoring system and a new monitoring device is introduced into the equipment monitoring system. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing a configuration example of an equipment monitoring system to which a migration construction method for an equipment monitoring system according to a first embodiment is applied; [Figure 2] FIG. 1 is a first diagram for explaining an example of a procedure for performing migration work on an equipment monitoring system by a migration work method for an equipment monitoring system according to a first embodiment. [Figure 3] FIG. 2 is a second diagram for explaining an example of a procedure for performing migration work on an equipment monitoring system by the migration work method for an equipment monitoring system according to the first embodiment. [Figure 4] FIG. 3 is a third diagram for explaining an example of a procedure for performing migration work on an equipment monitoring system by the migration work method for an equipment monitoring system according to the first embodiment. [Figure 5] FIG. 4 is a fourth diagram for explaining an example of a procedure for performing migration work on an equipment monitoring system by the migration work method for an equipment monitoring system according to the first embodiment. [Figure 6] FIG. 5 is a fifth diagram for explaining an example of a procedure for performing migration work on an equipment monitoring system by the migration work method for an equipment monitoring system according to the first embodiment. [Figure 7] FIG. 1 is a diagram showing a configuration example of a branch adapter used in a migration construction method for an equipment monitoring system according to a first embodiment; [Figure 8] 1 is a flowchart showing a first example of a procedure for a transition work by a transition work method for an equipment monitoring system according to a first embodiment. [Figure 9] A flowchart showing a second example of the procedure for the migration work by the migration work method for the equipment monitoring system according to the first embodiment. [Figure 10] A flowchart showing a third example of the procedure for the migration work by the migration work method for the equipment monitoring system according to the first embodiment. [Figure 11]FIG. 1 is a diagram illustrating an example of a hardware configuration for implementing a monitoring device according to a first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, a migration construction method for an equipment monitoring system and an equipment monitoring system according to an embodiment will be described in detail with reference to the drawings.

[0011] Embodiment 1 FIG. 1 is a diagram showing an example of the configuration of an equipment monitoring system 1 to which a migration construction method for an equipment monitoring system according to embodiment 1 is applied. The equipment monitoring system 1 is a system that monitors multiple pieces of equipment using one or multiple monitoring devices 3. In embodiment 1, each of the multiple pieces of equipment that are the target of monitoring by the equipment monitoring system 1 is equipment installed in a railway station building 2. The power equipment, lighting equipment, elevator equipment, and air conditioning equipment shown in FIG. 1 are each examples of equipment provided in the station building 2.

[0012] It should be noted that the objects of monitoring by the equipment monitoring system 1 are not limited to the equipment described here. The objects of monitoring by the equipment monitoring system 1 may include equipment other than those described above that is provided in the station building 2. Furthermore, the number of pieces of equipment that are objects of monitoring by the equipment monitoring system 1 is arbitrary.

[0013] The equipment monitoring system 1 to which the equipment monitoring system migration construction method according to the first embodiment is applied is not limited to the equipment monitoring system 1 that monitors equipment in the station building 2. The equipment monitoring system migration construction method according to the first embodiment may also be applied to an equipment monitoring system 1 that monitors equipment in facilities such as buildings, factories, plants, water purification plants, sewage treatment plants, power plants, river management facilities, or road management facilities.

[0014] The equipment monitoring system 1 includes one or more monitoring devices 3. In the following description, it is assumed that the equipment monitoring system 1 includes multiple monitoring devices 3. The multiple monitoring devices 3 monitor multiple pieces of equipment installed in the station building 2. For example, the multiple monitoring devices 3 share the responsibility of monitoring multiple pieces of equipment among themselves. Figure 1 shows one of the multiple monitoring devices 3 included in the equipment monitoring system 1. Each monitoring device 3 collects information indicating the status of the equipment being monitored, which is the equipment being monitored by that monitoring device 3. Each monitoring device 3 displays the status of the equipment based on the collected information. Each monitoring device 3 may also control the equipment.

[0015] The equipment monitoring system 1 includes one or more controllers 6. In the following description, it is assumed that the equipment monitoring system 1 includes multiple controllers 6. Each of the multiple controllers 6 is, for example, a PLC (Programmable Logic Controller). FIG. 1 shows one of the multiple controllers 6 included in the equipment monitoring system 1.

[0016] A plurality of controllers 6 are installed in the station building 2. As an example, each controller 6 is housed in a control panel installed in the station office in the station building 2. The plurality of controllers 6 share the control of a plurality of pieces of equipment installed in the station building 2. Each controller 6 and the equipment are connected to each other by a signal line 7. Each controller 6 acquires information indicating the status of the equipment by receiving signals sent from the equipment via the signal line 7. Each controller 6 generates a control signal based on the acquired information and controls the equipment by sending the control signal to the equipment via the signal line 7.

[0017] The equipment monitoring system 1 has a controller network 5 that interconnects each of the multiple monitoring devices 3 and each of the multiple controllers 6. Information indicating the status of the equipment acquired by each controller 6 is sent to the monitoring device 3 via the controller network 5. Each monitoring device 3 receives the information sent from the controller 6 and thereby acquires information indicating the status of the equipment being monitored. By collecting information indicating the status of the equipment using each monitoring device 3, the equipment monitoring system 1 can monitor the operating status of multiple pieces of equipment in the station building 2 in real time.

[0018] The facility monitoring system 1 includes a server 4 that supports operation or maintenance of multiple facilities in a station building 2. The server 4 is configured, for example, by one or more cloud servers. A cloud server is a server built in a cloud environment that includes computer resources provided by a cloud service platform. The server 4 is connected to a controller network 5. The server 4 acquires information indicating the status of each of the multiple facilities from the monitoring device 3 or the controller 6. The server 4 processes the acquired information and acquires information for operation management or maintenance management.

[0019] Support for operation or maintenance work by the server 4 makes it possible to reduce the labor required for operation or maintenance work for multiple pieces of equipment, or to optimize the operation of the equipment. Each of the multiple monitoring devices 3 and the server 4 may be connected to a higher-level system of the equipment monitoring system 1. In this case, each of the multiple monitoring devices 3, the server 4, and the higher-level system are connected so that they can communicate with each other.

[0020] Next, the procedure for performing migration work on the equipment monitoring system 1 will be described. FIG. 2 is a first diagram for explaining an example of the procedure for performing migration work on the equipment monitoring system 1 using the migration work method for an equipment monitoring system according to the first embodiment. Here, Company A is a business operator that is responsible for monitoring some of the multiple pieces of equipment in the station building 2. The monitoring device 3A shown in FIG. 2 is one of the multiple monitoring devices 3 that make up the equipment monitoring system 1, and is a device of Company A. The monitoring device 3A is connected to a controller network 5.

[0021] The controller 6A shown in FIG. 2 is one of multiple controllers 6 constituting the equipment monitoring system 1. The controller 6A is connected to the controller network 5. The controller 6A controls each of the multiple pieces of equipment monitored by the monitoring device 3A. The controller 6A also acquires information indicating the status of each piece of equipment monitored by the monitoring device 3A. Each of the multiple signal lines 7 shown in FIG. 2 is connected between the controller 6A and the equipment monitored by the monitoring device 3A. Note that FIG. 2 does not illustrate the monitoring devices 3 other than the monitoring device 3A, the controllers 6 other than the controller 6A, and the server 4. Each of the multiple signal lines 7 shown in FIG. 2 is a signal line 7 through which a signal indicating the status of the equipment monitored by the monitoring device 3A passes. The number of pieces of equipment monitored by the monitoring device 3A is assumed to be arbitrary. In other words, the number of signal lines 7 connected to the controller 6A is assumed to be arbitrary. Here, the signal propagated through each of the multiple signal lines 7 and input to the controller 6A is assumed to be a contact signal.

[0022] The monitoring device 3A monitors the operating status of each of the multiple pieces of equipment that are the monitoring targets of the monitoring device 3A, based on information sent from the controller 6A to the monitoring device 3A. Hereinafter, the combination of the monitoring device 3A and the controller 6A will be referred to as the Company A system.

[0023] In the following description, it is assumed that migration work is performed to remove the monitoring device 3A from the equipment monitoring system 1 and introduce a new monitoring device 3 into the equipment monitoring system 1. Fig. 2 shows the equipment monitoring system 1 before the migration work is performed.

[0024] 3 is a second diagram for explaining an example of the procedure for performing migration work on the equipment monitoring system 1 using the migration work method for an equipment monitoring system according to the first embodiment. In the migration work, the multiple signal lines 7 connected to the controller 6A are disconnected from the controller 6A. A branch adapter 8 that branches the input is connected to the controller 6A. Specifically, the branch adapter 8 is attached to the portion of the controller 6A from which the multiple signal lines 7 were disconnected, thereby connecting the branch adapter 8 to the controller 6A.

[0025] The branch adapter 8 is connected to the multiple signal lines 7 that have been disconnected from the controller 6A. As a result, the multiple signal lines 7 and the controller 6A are connected to each other via the branch adapter 8. Fig. 3 shows a state in which the branch adapter 8 is connected between the multiple signal lines 7 and the controller 6A. Details of the branch adapter 8 will be described later.

[0026] The contact signals propagated through each of the multiple signal lines 7 are input to the branch adapter 8. The branch adapter 8 outputs the multiple contact signals input to the branch adapter 8 to the controller 6A. In this way, the multiple contact signals indicating the status of the multiple pieces of equipment are sent to the controller 6A via the signal lines 7 and the branch adapter 8. The controller 6A acquires information indicating the status of each piece of equipment by receiving the multiple contact signals sent from the equipment via the signal lines 7 and the branch adapter 8. The controller 6A sends the received multiple contact signals to the monitoring device 3A, thereby sending information indicating the status of each piece of equipment to the monitoring device 3A.

[0027] Even after the transition work has begun, as long as the multiple signal lines 7 and the controller 6A are connected to each other via the branch adapter 8, the monitoring device 3A can acquire information indicating the status of each of the multiple pieces of equipment that are being monitored by the monitoring device 3A.

[0028] 4 is a third diagram for explaining an example of the procedure for performing migration work on the equipment monitoring system 1 using the migration work method for an equipment monitoring system according to the first embodiment. In the migration work described here, it is assumed that one monitoring device 3, monitoring device 3A, is removed and two new monitoring devices 3 are installed. After the migration work, the two new monitoring devices 3 share the responsibility of monitoring the multiple pieces of equipment that were the monitoring targets of monitoring device 3A.

[0029] Monitoring device 3B and monitoring device 3C shown in FIG. 4 are two monitoring devices 3 introduced into facility monitoring system 1. Monitoring device 3B is assumed to be a device made by company B. Monitoring device 3C is assumed to be a device made by company C. Here, it is assumed that company A has withdrawn from monitoring the facilities in station building 2, and that companies B and C have taken over the monitoring work that company A had been performing. Monitoring device 3B and monitoring device 3C are each connected to controller network 5.

[0030] Two new controllers 6 are introduced into the equipment monitoring system 1. Controller 6B and controller 6C shown in FIG. 4 are the two controllers 6 introduced into the equipment monitoring system 1. Controller 6B has the function of acquiring information indicating the state of the equipment that is the monitoring target of monitoring device 3B, and the function of controlling the equipment that is the monitoring target of monitoring device 3B. Controller 6C has the function of acquiring information indicating the state of the equipment that is the monitoring target of monitoring device 3C, and the function of controlling the equipment that is the monitoring target of monitoring device 3C. Each of controller 6B and controller 6C is connected to the controller network 5.

[0031] Hereinafter, the combination of monitoring device 3B and controller 6B will be referred to as Company B's system. The combination of monitoring device 3C and controller 6C will be referred to as Company C's system. By connecting monitoring device 3B and controller 6B to the controller network 5, Company B's system is introduced into the equipment monitoring system 1. By connecting monitoring device 3C and controller 6C to the controller network 5, Company C's system is introduced into the equipment monitoring system 1.

[0032] Monitoring device 3B monitors the operating status of the equipment that is the monitoring target of monitoring device 3B based on information sent from controller 6B to monitoring device 3B. Monitoring device 3C monitors the operating status of the equipment that is the monitoring target of monitoring device 3C based on information sent from controller 6C to monitoring device 3C.

[0033] 5 is a fourth diagram for explaining an example of the procedure for performing migration work on the equipment monitoring system 1 using the migration work method for an equipment monitoring system according to embodiment 1. Controller 6B is connected to the branch adapter 8 by a signal line 9. Controller 6C is connected to the branch adapter 8 by a signal line 9. FIG. 5 shows a state in which controller 6B and branch adapter 8 are connected by the signal line 9, and controller 6C and branch adapter 8 are connected by the signal line 9.

[0034] The branch adapter 8 has a function of converting multiple contact signals input to the branch adapter 8 into communication signals. The branch adapter 8 converts the multiple contact signals into communication signals and sends the communication signals to each of the controllers 6B and 6C. The branch adapter 8 sends the communication signal to the controller 6B via a signal line 9 between the branch adapter 8 and the controller 6B. The branch adapter 8 sends the communication signal to the controller 6C via a signal line 9 between the branch adapter 8 and the controller 6C. In the state shown in FIG. 5 , the branch adapter 8 branches the input to the branch adapter 8 to the monitoring device 3A, which is the old device, and the monitoring devices 3B and 3C, which are new devices. Here, the old device is the monitoring device 3 that will be removed from the equipment monitoring system 1 due to the migration work. The new device is the monitoring device 3 that will be newly added to the equipment monitoring system 1 due to the migration work. Two new devices, the monitoring devices 3B and 3C, which share the responsibility of monitoring multiple monitoring targets, are connected to the branch adapter 8.

[0035] Each of controller 6B and controller 6C receives a communication signal sent from branch adapter 8 to acquire information indicating the status of each of the plurality of pieces of equipment. Controller 6B sends information indicating the status of each of the plurality of pieces of equipment to monitoring device 3B. Controller 6C sends information indicating the status of each of the plurality of pieces of equipment to monitoring device 3C. Monitoring device 3B monitors the piece of equipment that is the monitoring target of monitoring device 3B using information indicating the status of the piece of equipment that is the monitoring target of monitoring device 3B, among the information indicating the status of each of the plurality of pieces of equipment. Monitoring device 3C monitors the piece of equipment that is the monitoring target of monitoring device 3C using information indicating the status of the piece of equipment that is the monitoring target of monitoring device 3C, among the information indicating the status of each of the plurality of pieces of equipment.

[0036] Even before the migration work is completed, as long as the branch adapter 8 and the controller 6B are connected to each other via the signal line 9, the monitoring device 3B can obtain information indicating the status of the equipment that is the control target of the monitoring device 3B. Also, even before the migration work is completed, as long as the branch adapter 8 and the controller 6C are connected to each other via the signal line 9, the monitoring device 3C can obtain information indicating the status of the equipment that is the control target of the monitoring device 3C.

[0037] 6 is a fifth diagram for explaining an example of a procedure for performing migration work on the equipment monitoring system 1 using the migration work method for an equipment monitoring system according to the first embodiment. The branch adapter 8 is disconnected from the controller 6A shown in FIG. 5 by being removed from the controller 6A. The monitoring device 3A and the controller 6A are each disconnected from the controller network 5.

[0038] Monitoring device 3A is disconnected from equipment monitoring system 1 by disconnecting it from controller network 5. Controller 6A is disconnected from equipment monitoring system 1 by removing branch adapter 8 and disconnecting it from controller network 5. Company A's system is removed from equipment monitoring system 1 by disconnecting monitoring device 3A and controller 6A from equipment monitoring system 1. FIG. 6 shows equipment monitoring system 1 after Company A's system has been removed from equipment monitoring system 1. In the state shown in FIG. 6, branch adapter 8 branches the input to branch adapter 8 to each of two new devices, monitoring device 3B and monitoring device 3C. In the state shown in FIG. 6, information indicated in signals input to branch adapter 8 from multiple signal lines 7 is sent to each of monitoring device 3B and monitoring device 3C.

[0039] This completes the migration work of removing the old monitoring device 3A from the equipment monitoring system 1 and introducing the new monitoring devices 3B and 3C into the equipment monitoring system 1. The equipment monitoring system 1 can continue to monitor multiple pieces of equipment by operating in the state shown in Figure 6.

[0040] 6, further migration work for the equipment monitoring system 1 may be performed. In this case, the migration work for the equipment monitoring system 1 can be performed by disconnecting the monitoring device 3 from the branch adapter 8 provided in the equipment monitoring system 1, or by connecting the monitoring device 3 to the branch adapter 8 provided in the equipment monitoring system 1. This makes it possible to perform the migration work for the equipment monitoring system 1 easily and efficiently, even when further migration work for the equipment monitoring system 1 is performed.

[0041] Next, we will explain the configuration of the branch adapter 8. Fig. 7 is a diagram showing an example of the configuration of the branch adapter 8 used in the migration construction method for an equipment monitoring system according to embodiment 1. The branch adapter 8 shown in Fig. 7 includes a contact signal input unit 11, a contact signal output unit 12, a signal conversion circuit 13, and a communication signal output unit 14.

[0042] The contact signal input unit 11 is an interface circuit that receives contact signals. A plurality of signal lines 7 are connected to the contact signal input unit 11 in the branch adapter 8 shown in Figures 3 to 6. A contact signal C1 that has propagated through each of the plurality of signal lines 7 is input to the contact signal input unit 11. The contact signal input unit 11 provides the input plurality of contact signals C1 to each of the contact signal output unit 12 and the signal conversion circuit 13.

[0043] The contact signal output unit 12 is an interface circuit that sends contact signals to the outside of the branch adapter 8. The contact signal output unit 12 in the branch adapter 8 shown in Figures 3 to 5 is connected to the controller 6A. The contact signal output unit 12 sends a plurality of contact signals C1 passed from the contact signal input unit 11 to the controller 6A.

[0044] The signal conversion circuit 13 converts the multiple contact signals C1 input from the multiple signal lines 7 to the branch adapter 8 into a communication signal C2. An example of the signal conversion circuit 13 is an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array). The signal conversion circuit 13 converts the multiple contact signals C1, each indicating the status of a piece of equipment, into a single communication signal C2 indicating the status of each of the multiple pieces of equipment. The signal conversion circuit 13 provides the communication signal C2 to the communication signal output unit 14.

[0045] The communication signal output unit 14 is an interface circuit that sends a communication signal to the outside of the branch adapter 8. A signal line 9 connected to the controller 6B and a signal line 9 connected to the controller 6C are connected to the communication signal output unit 14 in the branch adapter 8 shown in Figures 5 and 6. The communication signal output unit 14 sends the communication signal C2 passed from the signal conversion circuit 13 to each of the controller 6B and the controller 6C.

[0046] Next, the advantages of connecting the branch adapter 8 in the migration work method for the equipment monitoring system according to the first embodiment will be described. Prior to describing the advantages of the first embodiment, a case where migration work is performed without connecting the branch adapter 8 will be described as a comparative example of the first embodiment. In the comparative example, it is assumed that migration work is performed in which the monitoring device 3A is removed and monitoring devices 3B and 3C are installed without connecting the branch adapter 8 from the state shown in FIG. 2.

[0047] 2, a switching operation is performed in which some of the multiple signal lines 7 connected to controller 6A are reconnected from controller 6A to controller 6B, and the remaining multiple signal lines 7 are reconnected from controller 6A to controller 6C. In this case, the multiple signal lines 7 removed from controller 6A are connected one by one to controller 6B or controller 6C. Furthermore, from the multiple signal lines 7, the signal line 7 connected to controller 6B and the signal line 7 connected to controller 6C are selected, and the signal line 7 is connected to controller 6B and the signal line 7 is connected to controller 6C.

[0048] The more signal lines 7 connected to the controller 6A, the longer it takes to reconnect the signal lines 7. Furthermore, from the start to the end of the work of reconnecting the multiple signal lines 7, monitoring of the multiple equipment that are the monitoring targets of the monitoring device 3A must be stopped, which will have a significant impact on the operation of the multiple equipment. Furthermore, while the multiple signal lines 7 are being reconnected, the signal lines 7 connected to the controller 6B and the signal lines 7 connected to the controller 6C must be selected, which can easily lead to an error such as a signal line 7 that should be connected to the controller 6B being connected to the controller 6C.

[0049] In order to disconnect the multiple signal lines 7 from the controller 6A and reconnect the signal lines 7 to the controller 6B and the controller 6C, the switching work for the system of company B and the switching work for the system of company C will be carried out simultaneously. Therefore, it is necessary to adjust the schedule so that the switching work for the system of company B and the switching work for the system of company C can be carried out simultaneously.

[0050] When the reconnection of the multiple signal lines 7 connected to controller 6A to controller 6B and controller 6C is completed, the switching work for company B's system and the switching work for company C's system are completed. Furthermore, when controller 6A is completely disconnected from the multiple signal lines 7, company A's system is removed from the equipment monitoring system 1. If a problem is found after the switching work for company B's system and company C's system, since company A's system has already been removed, it is necessary to stop operation of company B's system and company C's system and perform recovery work to resolve the problem in company B's system and company C's system. For this reason, if a problem occurs after the switching work, it may have a significant impact on the operation of multiple pieces of equipment.

[0051] In contrast to the above comparative example, in the first embodiment, the transition work is performed by connecting a branch adapter 8 as shown in FIGS. 3 to 6. As an example, the terminal blocks to which the multiple signal lines 7 are connected are removed from the controller 6A, and the terminal blocks are attached to the branch adapter 8, thereby connecting the multiple signal lines 7 to the branch adapter 8. Furthermore, the branch adapter 8 with the attached terminal blocks is attached to the location on the controller 6A from which the terminal blocks were removed, thereby connecting the branch adapter 8 to the controller 6A. As a result, as shown in FIG. 3, the branch adapter 8 is connected between the multiple signal lines 7 and the controller 6A. Note that the terminal blocks are not shown.

[0052] Then, by connecting each of the controllers 6B and 6C to the branch adapter 8 with a signal line 9, the controllers 6A, 6B, and 6C are each connected to the branch adapter 8 as shown in FIG.

[0053] In the first embodiment, since there is no need to reconnect the multiple signal lines 7 removed from the controller 6A to the controller 6B or the controller 6C one by one, the time required for reconnection can be significantly reduced compared to the comparative example. Therefore, the impact of the reconnection work on the operation of the multiple pieces of equipment can be reduced. For example, by performing the reconnection work at night when no business is being conducted in the station building 2, it is possible to prevent the impact on the operation of the multiple pieces of equipment. Furthermore, when reconnecting the multiple signal lines 7, it is not necessary to distinguish between the signal line 7 connected to the controller 6B and the signal line 7 connected to the controller 6C. Therefore, it is possible to avoid a situation where a signal line 7 that should be connected to the controller 6B is mistakenly connected to the controller 6C.

[0054] In the first embodiment, multiple contact signals input to the branch adapter 8 are converted into a single communication signal within the branch adapter 8, and the communication signal is sent from the branch adapter 8 to each of the systems of company B and company C. In the equipment monitoring system 1, the space required for wiring can be reduced compared to when multiple signal lines 7 are connected to each of the controllers 6B and 6C. Furthermore, the cost required for wiring can be reduced compared to when multiple signal lines 7 are connected to each of the controllers 6B and 6C.

[0055] In the first embodiment, the operation of connecting the branch adapter 8 to the controller 6B via the signal line 9 and the operation of connecting the branch adapter 8 to the controller 6C via the signal line 9 do not have to be performed simultaneously. Therefore, there is no need to adjust the schedule to simultaneously perform the operation of connecting the system of company B and the operation of connecting the system of company C.

[0056] In the first embodiment, even after the start of the migration work, in a state where the plurality of signal lines 7 and the controller 6A are connected to each other via the branch adapter 8, the monitoring device 3A can acquire information indicating the state of each of the plurality of facilities that are the monitoring targets of the monitoring device 3A. Therefore, it is possible to perform the work of connecting the system of company B and the work of connecting the system of company C while continuing to monitor the plurality of facilities.

[0057] By performing the work of connecting Company B's system and the work of connecting Company C's system, monitoring device 3B can obtain information indicating the status of the equipment that is the control target of monitoring device 3B. Furthermore, monitoring device 3C can obtain information indicating the status of the equipment that is the control target of monitoring device 3C. In the first embodiment, until Company A's system is removed from the equipment monitoring system 1, monitoring of multiple pieces of equipment by monitoring devices 3B and 3C and monitoring of multiple pieces of equipment by monitoring device 3A can be performed in parallel. If a problem is found after the work of connecting Company B's system and Company C's system, recovery work can be performed to resolve the problem in Company B's system and Company C's system while continuing operation of Company A's system. Therefore, even if a problem occurs after the work of connecting Company B's system and Company C's system, a lead time can be secured to resolve the problem while continuing monitoring of multiple pieces of equipment.

[0058] In the first embodiment, the system of company A is removed from the equipment monitoring system 1 by removing the branch adapter 8 from the controller 6A. The system of company A can be easily removed by the simple task of removing the branch adapter 8 from the controller 6A. Furthermore, in the first embodiment, the system of company A can be removed at any timing. For example, the system of company A may be removed after it has been confirmed that there are no problems with the connections of the systems of companies B and C. In the equipment monitoring system 1, it is possible to ensure sufficient time to confirm that there are no problems with the connections of the systems of companies B and C before the system of company A is removed. This reduces the possibility that problems will occur with the connections of the systems of companies B and C after the system of company A is removed.

[0059] In the first embodiment, there are multiple procedures for performing migration work on the equipment monitoring system 1. Below, we will explain three examples of the procedures for performing migration work on the equipment monitoring system 1. In each of the three examples, it is assumed that, similar to the above, Company A's system is removed and Company B's system and Company C's system are introduced.

[0060] 8 is a flowchart showing a first example of the procedure for migration work using the migration work method for an equipment monitoring system according to the first embodiment. The first example is the procedure described above with reference to FIGS. 2 to 6. In the first example, two new devices are connected to the branch adapter 8 at the same time. In the following explanation, the work for connecting the system of company B is performed at the same time as the work for connecting the system of company C.

[0061] In step S1, the multiple signal lines 7 are removed from the controller 6A of Company A's system, and a branch adapter 8 is connected between the multiple signal lines 7 and the controller 6A of Company A's system. This brings the equipment monitoring system 1 into the state shown in Figure 3. Step S1 is the first step in which a branch adapter 8 that branches the input is connected between the old equipment and the signal line 7 through which a signal indicating the status of the equipment being monitored by the old equipment passes.

[0062] In step S2, the controller 6B of company B's system and the controller 6C of company C's system are connected to the branch adapter 8. The branch adapter 8 and the controller 6B are connected by a signal line 9. The branch adapter 8 and the controller 6C are connected by a signal line 9. This brings the equipment monitoring system 1 into the state shown in FIG. 5. Step S2 is the second step of connecting new devices to the branch adapter 8. In step S2, the two new devices are connected to the branch adapter 8.

[0063] In step S3, information input from the multiple signal lines 7 to the branch adapter 8 is sent to each of the monitoring device 3A of company A's system, the monitoring device 3B of company B's system, and the monitoring device 3C of company C's system. The multiple contact signals from the branch adapter 8 are received by the controller 6A, whereby the controller 6A acquires information indicating the status of each of the multiple pieces of equipment. The controller 6A sends the acquired information to the monitoring device 3A. As a result, the information input from the multiple signal lines 7 to the branch adapter 8 is sent to the monitoring device 3A. The branch adapter 8 converts the multiple contact signals into communication signals. As the communication signals from the branch adapter 8 are received by each of the controllers 6B and 6C, the controllers 6B and 6C acquire information indicating the status of each of the multiple pieces of equipment. The controller 6B sends the acquired information to the monitoring device 3B. The controller 6C sends the acquired information to the monitoring device 3C. As a result, the information input from the multiple signal lines 7 to the branch adapter 8 is sent to each of the monitoring devices 3B and 3C. Step S3 is a third step in which information indicated in the signal input from signal line 7 to branch adapter 8 is sent to each of the old and new devices. In step S3, information indicated in the signal input from signal line 7 to branch adapter 8 is sent to each of the two new devices.

[0064] In step S4, the branch adapter 8 is removed from the controller 6A of Company A's system. This places the equipment monitoring system 1 in the state shown in Fig. 6. Step S4 is the fourth step in which the old equipment is disconnected from the branch adapter 8. This completes the migration work according to the procedure of the first example.

[0065] The equipment monitoring system 1 may be configured to send information indicated in a signal input from the signal line 7 to the branch adapter 8 to the old equipment, that is, the monitoring device 3A, after the first step and before the fourth step. This allows the old equipment to continue monitoring the multiple pieces of equipment in parallel with the work to install the new equipment. Furthermore, the impact of the reconnection work on the operation of the multiple pieces of equipment can be reduced.

[0066] In the above, it is assumed that two new devices are newly added to the equipment monitoring system 1. In the first example, it is sufficient that the number of new devices added as a result of the migration work is two or more. In step S2, the two or more new devices are connected to the branch adapter 8. In step S3, information indicated in the signal input from the signal line 7 to the branch adapter 8 is sent to each of the two or more new devices.

[0067] 9 is a flowchart showing a second example of the procedure for migration work using the migration work method for an equipment monitoring system according to embodiment 1. The second example is an example performed when the connections to the branch adapter 8 for each of the two new devices are different. According to the following explanation, the work to connect the system of company C is performed after the work to connect the system of company B.

[0068] In step S11, the multiple signal lines 7 are removed from the controller 6A of Company A's system, and a branch adapter 8 is connected between the multiple signal lines 7 and the controller 6A of Company A's system. Step S11 is the same as step S1 shown in Fig. 8. Step S11 is the first step of connecting the branch adapter 8, which branches the input, between the old device and the signal line 7 through which a signal indicating the status of the equipment to be monitored by the old device passes.

[0069] In step S12, the controller 6B of company B's system is connected to the branch adapter 8. Step S12 is the second step of connecting the first of the two new devices to the branch adapter 8. Here, the first new device is the monitoring device 3B.

[0070] In step S13, information input from the multiple signal lines 7 to the branch adapter 8 is sent to each of the monitoring device 3A of Company A's system and the monitoring device 3B of Company B's system. Step S13 is a third step in which information indicated in the signals input from the signal lines 7 to the branch adapter 8 is sent to each of the old device and the new device. In step S13, information indicated in the signals input from the signal lines 7 to the branch adapter 8 is sent to the first new device.

[0071] In step S14, the controller 6C of company C's system is connected to the branching adapter 8. In step S14, the second new device of the two new devices is connected to the branching adapter 8. In this case, the second new device is monitoring device 3C.

[0072] In step S15, information input from the multiple signal lines 7 to the branching adapter 8 is sent to each of the monitoring device 3A of company A's system, the monitoring device 3B of company B's system, and the monitoring device 3C of company C's system. Here, steps S14 and S15 are defined as the fifth step, which is a step between the third and fourth steps. In the fifth step, a second new device is connected to the branching adapter 8, and information indicated in the signals input from the signal lines 7 to the branching adapter 8 is sent to each of the old device, the first new device, and the second new device.

[0073] In step S16, the branch adapter 8 is removed from the controller 6A of Company A's system. Step S16 is the same as step S4 shown in Figure 8. Step S16 is the fourth step of disconnecting the old device from the branch adapter 8. This completes the migration work according to the procedure of the second example.

[0074] In the second example, as in the first example, after the first step and before the fourth step, the information indicated in the signal input from the signal line 7 to the branch adapter 8 may be sent to the monitoring device 3A, which is the old device.

[0075] In the second example, it is also sufficient that the number of new devices added by the migration work is two or more. In step S12, a first new device, which is at least one of the two or more new devices, is connected to the branch adapter 8. In step S14, a second new device, which is a new device other than the first new device, of the two or more new devices is connected to the branch adapter 8.

[0076] 10 is a flowchart showing a third example of the procedure for migration work by the migration work method for an equipment monitoring system according to the first embodiment. In the third example, a first new device is connected to the branch adapter 8 before the old device is disconnected from the branch adapter 8, and a second new device is connected to the branch adapter 8 after the old device is disconnected from the branch adapter 8. According to the following explanation, work to connect the system of company B is carried out before work to disconnect the system of company A. Furthermore, work to connect the system of company C is carried out after work to disconnect the system of company A.

[0077] In step S21, the multiple signal lines 7 are removed from the controller 6A of Company A's system, and a branch adapter 8 is connected between the multiple signal lines 7 and the controller 6A of Company A's system. Step S21 is the same as step S1 shown in Fig. 8. Step S21 is the first step of connecting the branch adapter 8, which branches the input, between the old device and the signal line 7 through which a signal indicating the status of the equipment to be monitored by the old device passes.

[0078] In step S22, the controller 6B of Company B's system is connected to the branch adapter 8. Step S22 is similar to step S12 shown in Fig. 9. Step S22 is the second step of connecting the first of the two new devices to the branch adapter 8. Here, the first new device is the monitoring device 3B.

[0079] In step S23, information input from the multiple signal lines 7 to the branching adapter 8 is sent to each of the monitoring device 3A of Company A's system and the monitoring device 3B of Company B's system. Step S23 is similar to step S13 shown in Figure 9. Step S23 is a third step in which information indicated in the signals input from the signal lines 7 to the branching adapter 8 is sent to each of the old device and the new device. In step S23, information indicated in the signals input from the signal lines 7 to the branching adapter 8 is sent to the first new device.

[0080] In step S24, the branch adapter 8 is removed from the controller 6A of the system of company A. Step S24 is the same as step S4 shown in Fig. 8. Step S24 is the fourth step in which the branch adapter 8 is disconnected from the old device.

[0081] In step S25, the controller 6C of Company C's system is connected to the branch adapter 8. Step S25 is the same as step S14 shown in Fig. 9. In step S25, the second new device of the two new devices is connected to the branch adapter 8. In this case, the second new device is monitoring device 3C.

[0082] In step S26, information input from the multiple signal lines 7 to the branch adapter 8 is sent to each of the monitoring device 3B of Company B's system and the monitoring device 3C of Company C's system. Here, steps S25 and S26 are considered to be the sixth step, which is a step after the fourth step. In the sixth step, the second new device is connected to the branch adapter 8, and information indicated in the signals input from the signal lines 7 to the branch adapter 8 is sent to each of the first new device and the second new device. This completes the migration work according to the procedure of the third example.

[0083] In the third example, as in the first example, after the first step and before the fourth step, the information indicated in the signal input from the signal line 7 to the branch adapter 8 may be sent to the monitoring device 3A, which is the old device.

[0084] In the third example, it is also sufficient that the number of new devices added by the migration work is two or more. In step S22, a first new device, which is at least one of the two or more new devices, is connected to the branch adapter 8. In step S25, a second new device, which is a new device other than the first new device, of the two or more new devices is connected to the branch adapter 8.

[0085] In the above three examples, two or more new devices are added to the equipment monitoring system 1, but this is not limited to this. The number of new devices added through the migration work may be one. In other words, the monitoring of multiple pieces of equipment that were previously monitored by the old device may be handled by only one new device.

[0086] Furthermore, in the above, migration work is performed in an equipment monitoring system 1 equipped with a plurality of monitoring devices 3, but this is not limited to this. The migration work method for an equipment monitoring system according to the first embodiment may also be applied to a case where one monitoring device 3 is removed and one or more monitoring devices 3 are introduced in an equipment monitoring system 1 equipped with only one monitoring device 3. The migration work method for an equipment monitoring system according to the first embodiment may be any method as long as it involves the removal of at least one old device that is at least one monitoring device 3 and the introduction of at least one new device that is at least one monitoring device 3.

[0087] Next, a hardware configuration for realizing the monitoring device 3 will be described. Fig. 11 is a diagram showing an example of a hardware configuration for realizing the monitoring device 3 according to the first embodiment. The monitoring device 3 is realized by a computer system including a processing circuit 21, a communication device 22, an input device 25, and a display device 26. The processing circuit 21 includes a processor 23 and a memory 24. The processing circuit 21 is a circuit on which the processor 23 executes software.

[0088] The processing functions of the monitoring device 3 are realized by software, firmware, or a combination of software and firmware. The software or firmware is written as a program and stored in the memory 24. In the processing circuit 21, the processor 23 reads and executes the program stored in the memory 24, thereby realizing the processing functions of the monitoring device 3. That is, the processing circuit 21 includes the memory 24 for storing the program that will result in the processing of the monitoring device 3 being executed. It can also be said that the program stored in the memory 24 causes a computer to execute the procedures and methods of the monitoring device 3.

[0089] The processor 23 is a CPU (Central Processing Unit), a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, a processor, or a DSP (Digital Signal Processor). The memory 24 is, for example, a non-volatile or volatile semiconductor memory such as a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, an EPROM (Erasable Programmable Read Only Memory), an EEPROM (Electrically Erasable Programmable Read Only Memory), a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, or a DVD (Digital Versatile Disc).

[0090] The communication device 22 communicates with devices external to the monitoring device 3. The input device 25 is a device that is operated by a user of the monitoring device 3 and into which information is input. The input device 25 includes, for example, a keyboard, a mouse, a keypad, or a touch panel. The display device 26 is a device that displays information. The display device 26 is, for example, an LCD (Liquid Crystal Display) or an organic EL (Electro-Luminescence) display. The display device 26 displays the status of the equipment. The monitoring device 3 may include an integrated circuit such as an ASIC or FPGA.

[0091] According to the first embodiment, the migration method for an equipment monitoring system includes a first step of connecting a branch adapter 8, which branches an input, between a signal line 7, through which a signal indicating the status of equipment monitored by an old device passes, and the old device; a second step of connecting a new device to the branch adapter 8; a third step of sending information indicated in the signal input from the signal line 7 to the branch adapter 8 to each of the old and new devices; and a fourth step of disconnecting the old device from the branch adapter 8. Connecting a new device to the branch adapter 8 connected between the signal line 7 and the old device and disconnecting the old device from the branch adapter 8 eliminates the need to reconnect each signal line 7 from the old device to the new device, thereby reducing the time required for the migration. Furthermore, the impact of the reconnection work on the operation of multiple pieces of equipment can be reduced. This allows for easy and efficient migration work, in which one monitoring device 3 is removed from the equipment monitoring system 1 and a new monitoring device 3 is introduced into the equipment monitoring system 1.

[0092] In addition, in the third step, the multiple contact signals input from the multiple signal lines 7 to the branch adapter 8 are converted into communication signals in the branch adapter 8, and the communication signals are sent to the new device. Compared to when multiple signal lines 7 are connected to the new device, the reconnection work can be performed more efficiently. In the equipment monitoring system 1, the space required for wiring can be reduced compared to when multiple signal lines 7 are connected to the new device. Also, the cost required for wiring can be reduced compared to when multiple signal lines 7 are connected to the new device.

[0093] Furthermore, two or more new devices that monitor multiple monitoring targets are connected to the branch adapter 8, and information indicated in a signal input from the signal line 7 to the branch adapter 8 is sent to each of the two or more new devices. By connecting two or more new devices to the branch adapter 8, it is no longer necessary to select the signal line 7 to be connected to each of the two or more new devices. This makes it possible to avoid errors in connecting the signal lines 7.

[0094] In the second step, two or more new devices are connected to the branching adapter 8, and in the third step, information indicated in the signal input from the signal line 7 to the branching adapter 8 is sent to each of the two or more new devices. This allows the reconnection work for two or more new devices to be performed at once.

[0095] The method further includes a fifth step between the third step and the fourth step, in which in the second step, a first new device that is at least one of the two or more new devices is connected to the branching adapter 8, and in the third step, information indicated in a signal input from the signal line 7 to the branching adapter 8 is sent to the first new device. In the fifth step, a second new device that is a new device other than the first new device among the two or more new devices is connected to the branching adapter 8, and information indicated in a signal input from the signal line 7 to the branching adapter 8 is sent to each of the old device, the first new device, and the second new device. This makes it possible to distribute the timing of the reconnection work for the two or more new devices before the old device is disconnected from the branching adapter 8 in the fourth step.

[0096] The method further includes a sixth step that is a step that follows the fourth step, in which in the second step, a first new device that is at least one of the two or more new devices is connected to the branching adapter 8, and in the third step, information indicated in a signal input from the signal line 7 to the branching adapter 8 is sent to the first new device. In the sixth step, a second new device that is a new device other than the first new device among the two or more new devices is connected to the branching adapter 8, and information indicated in a signal input from the signal line 7 to the branching adapter 8 is sent to each of the first new device and the second new device. This allows the timing of the reconnection work for the two or more new devices to be distributed between before the fourth step and after the fourth step.

[0097] Furthermore, after the first step and before the fourth step, information indicated in the signal input from the signal line 7 to the branch adapter 8 is sent to the old device. This allows the old device to continue monitoring multiple pieces of equipment in parallel with the work to install the new device. Also, the impact of the reconnection work on the operation of the multiple pieces of equipment can be reduced. If a fault occurs during the reconnection work, the reconnection work can be interrupted to resolve the fault while continuing to monitor the multiple pieces of equipment.

[0098] According to the first embodiment, the equipment monitoring system 1 includes a plurality of monitoring devices 3 that monitor a plurality of pieces of equipment, and a branch adapter 8 that is connected to a signal line 7 through which signals indicating the status of the plurality of pieces of equipment pass, and that sends information indicated in the signals from the signal line 7 to each of the plurality of monitoring devices 3. This makes it possible to easily and efficiently perform migration work on the equipment monitoring system 1 by simply disconnecting the monitoring devices 3 from the branch adapter 8 or connecting the monitoring devices 3 to the branch adapter 8.

[0099] The branch adapter 8 also includes a signal conversion circuit 13 that converts multiple contact signals input from the multiple signal lines 7 to the branch adapter 8 into communication signals, and a communication signal output unit 14 that sends the communication signals to each of the two or more monitoring devices 3. This allows the equipment monitoring system 1 to reduce the space required for wiring compared to when multiple signal lines 7 are connected to multiple monitoring devices 3. Also, the cost required for wiring can be reduced compared to when multiple signal lines 7 are connected to multiple monitoring devices 3.

[0100] The configurations described in the above embodiments are examples of the contents of the present disclosure. The configurations of the embodiments can be combined with other known technologies. Part of the configurations of the embodiments can be omitted or modified without departing from the gist of the present disclosure.

[0101] Various aspects of the present disclosure are summarized below as appendices.

[0102] (Appendix 1) A migration construction method for an equipment monitoring system that monitors multiple pieces of equipment using one or more monitoring devices, which involves removing at least one of the monitoring devices, an old device, from the equipment monitoring system, and introducing a new device, a newly added monitoring device, into the equipment monitoring system, a first step of connecting a branch adapter that branches an input between the old device and a signal line through which a signal indicating the status of the equipment to be monitored by the old device passes; a second step of connecting the new device to the branching adapter; a third step of sending information indicated in a signal input from the signal line to the branching adapter to each of the old device and the new device; and a fourth step of disconnecting the old device from the branch adapter. A method for migrating a facility monitoring system. (Appendix 2) In the third step, a plurality of contact signals input from the plurality of signal lines to the branching adapter are converted into communication signals in the branching adapter, and the communication signals are sent to the new device. A migration construction method for an equipment monitoring system according to claim 1. (Appendix 3) two or more of the new devices that monitor a plurality of the monitoring targets are connected to the branch adapter; Information indicated in a signal input from the signal line to the branching adapter is sent to each of the two or more new devices. A migration construction method for an equipment monitoring system according to claim 1 or 2. (Appendix 4) In the second step, two or more of the new devices are connected to the branch adapter; In the third step, information indicated in a signal input from the signal line to the branching adapter is sent to each of the two or more new devices. 4. A migration construction method for an equipment monitoring system according to claim 3. (Appendix 5) further comprising a fifth step between the third step and the fourth step; In the second step, a first new device, which is at least one of the two or more new devices, is connected to the branching adapter; In the third step, information indicated in a signal input from the signal line to the branch adapter is sent to the first new device; In the fifth step, a second new device, which is one of the two or more new devices other than the first new device, is connected to the branching adapter, and information indicated in a signal input from the signal line to the branching adapter is sent to each of the old device, the first new device, and the second new device. 4. A migration construction method for an equipment monitoring system according to claim 3. (Appendix 6) Further including a sixth step which is a step subsequent to the fourth step, In the second step, a first new device, which is at least one of the two or more new devices, is connected to the branching adapter; In the third step, information indicated in a signal input from the signal line to the branch adapter is sent to the first new device; In the sixth step, a second new device, which is one of the two or more new devices other than the first new device, is connected to the branching adapter, and information indicated in a signal input from the signal line to the branching adapter is sent to each of the first new device and the second new device. 4. A migration construction method for an equipment monitoring system according to claim 3. (Appendix 7) After the first step and before the fourth step, information indicated in a signal input from the signal line to the branch adapter is sent to the old device. 7. A migration construction method for an equipment monitoring system according to any one of appendices 1 to 6. (Appendix 8) a plurality of monitoring devices for monitoring a plurality of facilities; a branch adapter connected to a signal line through which signals indicating the status of the plurality of facilities pass, and which transmits information indicated by the signals from the signal line to each of the plurality of monitoring devices. A facility monitoring system comprising: (Appendix 9) The branch adapter is a signal conversion circuit that converts a plurality of contact signals input from the plurality of signal lines to the branch adapter into communication signals; a communication signal output unit that transmits the communication signal to each of the two or more monitoring devices. 9. The facility monitoring system according to claim 8, [Explanation of symbols]

[0103] 1 Equipment monitoring system, 2 Station building, 3, 3A, 3B, 3C Monitoring devices, 4 Server, 5 Controller network, 6, 6A, 6B, 6C Controllers, 7, 9 Signal line, 8 Branch adapter, 11 Contact signal input unit, 12 Contact signal output unit, 13 Signal conversion circuit, 14 Communication signal output unit, 21 Processing circuit, 22 Communication device, 23 Processor, 24 Memory, 25 Input device, 26 Display device.

Claims

1. A migration construction method for an equipment monitoring system that monitors multiple pieces of equipment using one or more monitoring devices, comprising removing at least one of the monitoring devices, an old device, from the equipment monitoring system, and introducing a new device, a newly added monitoring device, into the equipment monitoring system, a first step of connecting a branch adapter for branching an input between the old device and a signal line through which a signal indicating the status of the equipment to be monitored by the old device passes; a second step of connecting the new device to the branching adapter; a third step of sending information indicated in a signal input from the signal line to the branching adapter to each of the old device and the new device; a fourth step of disconnecting the old device from the branching adapter. A method for migrating a facility monitoring system.

2. In the third step, a plurality of contact signals input from the plurality of signal lines to the branch adapter are converted into communication signals in the branch adapter, and the communication signals are sent to the new device.

2. The method for transitioning a facility monitoring system according to claim 1.

3. two or more of the new devices that monitor a plurality of the monitoring targets are connected to the branch adapter; Information indicated in a signal input from the signal line to the branching adapter is sent to each of the two or more new devices.

2. The method for transitioning a facility monitoring system according to claim 1.

4. In the second step, two or more of the new devices are connected to the branching adapter; In the third step, information indicated in a signal input from the signal line to the branch adapter is sent to each of the two or more new devices.

4. The method for transitioning a facility monitoring system according to claim 3.

5. further comprising a fifth step between the third step and the fourth step; In the second step, a first new device, which is at least one of the two or more new devices, is connected to the branching adapter; In the third step, information indicated in a signal input from the signal line to the branch adapter is sent to the first new device; In the fifth step, a second new device, which is one of the two or more new devices other than the first new device, is connected to the branching adapter, and information indicated in a signal input from the signal line to the branching adapter is sent to each of the old device, the first new device, and the second new device.

4. The method for transitioning a facility monitoring system according to claim 3.

6. The method further includes a sixth step that is a step subsequent to the fourth step, In the second step, a first new device, which is at least one of the two or more new devices, is connected to the branching adapter; In the third step, information indicated in a signal input from the signal line to the branch adapter is sent to the first new device; In the sixth step, a second new device, which is one of the two or more new devices other than the first new device, is connected to the branching adapter, and information indicated in a signal input from the signal line to the branching adapter is sent to each of the first new device and the second new device.

4. The method for transitioning a facility monitoring system according to claim 3.

7. After the first step and before the fourth step, information indicated in a signal input from the signal line to the branch adapter is sent to the old device.

7. A method for transitioning a facility monitoring system according to claim 1.

8. a plurality of monitoring devices for monitoring a plurality of facilities; a branch adapter connected to a signal line through which signals indicating the status of the plurality of facilities pass, and which transmits information indicated by the signals from the signal line to each of the plurality of monitoring devices. A facility monitoring system comprising:

9. The branch adapter is a signal conversion circuit that converts a plurality of contact signals input from the plurality of signal lines to the branch adapter into communication signals; a communication signal output unit that transmits the communication signal to each of the two or more monitoring devices.

9. The facility monitoring system according to claim 8.

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