Remote Management System

Abstract

To allow an operation terminal device other than an operation terminal device that has accepted a request for information indicating the status of an apparatus to be managed to acquire the information.SOLUTION: A remote management system includes an apparatus to be managed, a server unit, a first operation terminal device, and a second operation terminal device. The apparatus to be managed includes a first communication unit that transmits information indicating the status of the apparatus to be managed to the server unit. The server unit includes a second communication unit and a storage unit. The first operation terminal device includes a third communication unit and a first request input unit that accepts a request for the information indicating the status of the apparatus to be managed. The second operation terminal device includes a fourth communication unit and a second request input unit that accepts a request for the information indicating the status of the apparatus to be managed. When the first request input unit accepts the request, the information indicating the status of the apparatus to be managed is stored in the storage unit, and when the second request input unit accepts the request, the second communication unit transmits the information indicating the status of the apparatus to be managed stored in the storage unit to the fourth communication unit.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a remote management system. [Background technology]

[0002] A method for maintaining and managing heat supply equipment and the like has been known for some time (see Patent Document 1). In the technology described in Patent Document 1, when an abnormality occurs in heat supply equipment and the like, abnormality occurrence data is transmitted from the equipment to a control device such as a management base via a communication line, and the control device at the management base receives the abnormality occurrence data transmitted from the equipment. Next, the received abnormality occurrence data is stored in a web server. Next, if it is determined that detailed information is necessary for the received abnormality occurrence data, a request is made to the equipment to transmit detailed abnormality occurrence data relating to the detailed information. Next, a process is executed to receive the detailed abnormality occurrence data transmitted from the equipment and to accumulate the received detailed abnormality occurrence data in a web server. A maintenance worker carries and possesses a mobile terminal equipped with a microprocessor, and receives a call from the management base or management center and grasps the status of the abnormality that has occurred in the heat equipment using the mobile terminal. On the other hand, Patent Document 1 does not state whether a terminal device other than a mobile terminal that has accepted a request for information indicating the status of a thermal device can acquire the information indicating the status of the thermal device.

[0003] Also, conventionally, an operation management system including a processing device, a portable communication terminal device, and a status monitoring device is known (see Patent Document 2). Patent Document 2 describes that the processing device is, for example, a sterilization device such as a steam sterilization device, a gas sterilization device, or a plasma sterilization device, a disinfection device such as a retort sterilization device or a formalin disinfection device, a device for detoxifying a sterilization gas connected to a gas sterilization device or a formalin disinfection device, a cleaning device that reduces pressure or stores water in a cleaning tank, or a vacuum cooling device or a thawing device used in food machinery. In the technology described in Patent Document 2, abnormality information indicating that an abnormality has occurred in the processing device and status information (machine number data, supplementary data, temperature data, pressure data, etc.) are collected by the status monitoring device and transmitted from the status monitoring device to a portable communication terminal device carried by an operator. Patent document 2 also describes that the above-mentioned abnormality information is transmitted to the operator's mobile communication terminal device, and that in response to a transmission request from the manager's mobile communication terminal device, the above-mentioned abnormality information may also be transmitted to the manager's mobile communication terminal device. On the other hand, Patent Document 2 does not state whether the operator's mobile communication terminal device has a means for accepting a request for status information from the operator. Therefore, Patent Document 2 does not state a configuration in which, when the operator's mobile communication terminal device accepts a request for status information from the operator, the administrator's mobile communication terminal device acquires the status information. In the technology described in Patent Document 2, a mobile communication terminal device other than the mobile communication terminal device of the operator who accepted the request for the status information of the processing device (for example, the mobile communication terminal device of the operator's superior) cannot obtain the status information of the processing device. Therefore, it is difficult for multiple parties to share the same information, and it is not possible to carry out joint work such as reviewing the operating status based on common information, or to educate or teach. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2002-298270 A [Patent Document 2] Patent No. 6123355 Summary of the Invention [Problem to be solved by the invention]

[0005] In consideration of the above-mentioned problems, the present invention aims to provide a remote management system in which, when an operation terminal device that has accepted a request for information indicating the status of a managed device acquires information indicating the status from the targeted managed device, an operation terminal device other than the operation terminal device that accepted the request for information indicating the status of the managed device can acquire information indicating the status of the aforementioned managed device. [Means for solving the problem]

[0006] According to one aspect of the present invention, there is provided a remote management system comprising a managed device, a server unit, a first operation terminal device, and a second operation terminal device, the managed device and the server unit are connected via a first communication line, and the first operation terminal device and the second operation terminal device are connected to the server unit via a second communication line, the managed device comprises a first communication unit that transmits information indicating a status of the managed device to the server unit, the server unit comprises a second communication unit that receives the information indicating the status of the managed device transmitted by the first communication unit, and a storage unit, the first operation terminal device comprises a third communication unit, a first request input unit that accepts a request for information indicating the status of the managed device, and a first display unit that displays the information indicating the status of the managed device, the second operation terminal device comprises a fourth communication unit, a second request input unit that accepts the request for information indicating the status of the managed device, and a second display unit that displays the information indicating the status of the managed device, the information indicating the status of the managed device is received by the second communication unit and stored in the memory unit in association with the request for information indicating the status of the managed device accepted by the first request input unit, and when the first operation terminal device is connected to the managed device via the first communication line and the second communication line, and the second request input unit accepts the request for information indicating the status of the managed device, the second communication unit transmits to the fourth communication unit information indicating the status of the managed device, the information being collected in the managed device in response to the first request input unit accepting the request for information indicating the status of the managed device by the first request input unit and stored in the memory unit in association with the request for information indicating the status of the managed device accepted by the first request input unit, and the fourth communication unit receives the information indicating the status of the managed device transmitted by the second communication unit as a response to the request for information indicating the status of the managed device accepted by the second request input unit, and the second display unit displays, for the managed device indicated by the response received by the fourth communication unit among the plurality of managed devices, The second Display items are items of information to be displayed on the display unit; The secondA remote management system displays information indicating the status of the managed device received by the fourth communication unit in a display format similar to the display format of the first display unit, for the managed device displayed by the first display unit, by displaying a display item that is the same as a display item that is an item of information displayed on the first display unit at the same display position as the display position at which the display item is displayed on the first display unit, in a display format determined by the display position at which the display item is displayed on the display unit.

[0007] In a remote management system of one embodiment of the present invention, the first request input unit accepts a request for information indicating the status of the managed device, and the information indicating the status of the managed device transmitted by the first communication unit is stored in the memory unit in correspondence with the request for information indicating the status of the managed device received by the first request input unit, and when the first operation terminal device is connected to the managed device via the first communication line and the second communication line, and the second request input unit accepts a request for information indicating the status of the managed device, the second communication unit may transmit to the fourth communication unit the information indicating the status of the managed device stored in the memory unit in correspondence with the request for information indicating the status of the managed device received by the first request input unit.

[0008] In a remote management system of one embodiment of the present invention, the second communication unit may transmit information indicating the status of the managed device stored in the memory unit to the fourth communication unit, and after a predetermined time has elapsed, the information indicating the status of the managed device stored in the memory unit may be erased. Effect of the Invention

[0009] According to the present invention, a remote management system can be provided in which, when an operation terminal device that accepts a request for information indicating the status of a managed device acquires information indicating the status from the targeted managed device, an operation terminal device other than the operation terminal device that accepted the request for information indicating the status of the managed device acquires the information indicating the status of the aforementioned managed device. [Brief description of the drawings]

[0010] [Figure 1] 1 is a diagram illustrating an example of a remote management system 1 according to an embodiment. [Diagram 2] FIG. 13 is a diagram showing an example of an alarm display screen of the operation terminal device. [Diagram 3] 13 is a diagram showing an example of a transition of a display screen when an alarm confirmation information request is made on the alarm display screen. [Figure 4] 13 is an example of a flow for storing situation information in a storage unit. [Diagram 5] 13 is an example of a flow for displaying the situation information stored in the storage unit 123 on the operation terminal device 14. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an embodiment of a remote management system of the present invention will be described with reference to the drawings.

[0012] FIG. 1 is a diagram illustrating an example of a remote management system 1 according to an embodiment. In the example shown in FIG. 1, the remote management system 1 includes devices to be managed 11A-11G, a server unit 12, an operation terminal device 13, and an operation terminal device 14. Each of the devices to be managed 11A-11G is connected to the server unit 12 via a communication line CL1. For example, one-to-one communication is performed via the communication line CL1. The server unit 12 and the operation terminal device 13 are connected to each other via a communication line CL2. The server unit 12 and the operation terminal device 14 are connected to each other via the communication line CL2. Client-server type communication is performed via the communication line CL2. In the example shown in FIG. 1, the remote management system 1 manages seven managed devices 11A to 11G, but in other examples, the remote management system 1 may manage any number of managed devices other than seven. In addition, in the example shown in FIG. 1, the remote management system 1 includes two operation terminal devices 13, 14, but in other examples, the remote management system 1 may include three or more operation terminal devices 13, 14, . . .

[0013] In the example shown in Figure 1, the managed devices 11A to 11G are, for example, boilers, water treatment equipment, food equipment (equipment that defrosts, cools, sterilizes, cooks, and cools food with cold water), medical equipment (equipment that performs sterilization for medical, industrial, and research purposes), and thermoelectric solution equipment (equipment that improves the efficiency of energy systems by reducing power consumption using thermal energy, such as compressors and fuel cells). The managed device 11A includes a detection unit 11A1, a communication unit 11A2, a storage unit (not shown), an alarm generation unit (not shown), an alarm output unit (not shown), and a processing unit (not shown). The detection unit 11A1 detects the status of the managed device 11A. The detection unit 11A1 is, for example, a sensor having an alarm signal generation function. The communication unit 11A2 transmits information indicating the status of the managed device 11A detected by the detection unit 11A1 to the server unit 12. The information indicating the status of the managed device 11A is, for example, information such as temperature, pressure, flow rate, or other conditions detected by the detection unit 11A1. The detection result of the detection unit 11A1 is output as an electric signal to the communication unit 11A2 via the processing unit. The storage unit of the managed device 11A stores information indicating the status of the managed device 11A, etc. The information indicating the status of the managed device 11A may include past information indicating the past status of the managed device 11A detected by the detection unit 11A1, setting information of the managed device 11A, alarm information, etc. The alarm generating section of the managed device 11A generates alarm information (alarm signal) for the managed device 11A based on the status of the managed device 11A detected by the detecting section 11A1. The alarm generating section determines that an abnormality exists when the electrical signal output by the detecting section 11A1 falls outside a preset normal range, and generates alarm information. The alarm output section of the managed device 11A displays an alarm using an alarm lamp, outputs an alarm sound using a buzzer, etc., based on the alarm information generated by the alarm generating section.

[0014] 1, the managed devices 11B, 11C, ..., 11G are configured similarly to the managed device 11A, and include detection units 11B1, 11C1, ..., 11G1, communication units 11B2, 11C2, ..., 11G2, a storage unit (not shown), an alarm generation unit (not shown), an alarm output unit (not shown), and a processing unit (not shown). The communication unit 11B2 transmits information indicating the status of the managed device 11B detected by the detection unit 11B1 to the server unit 12, the communication unit 11C2 transmits information indicating the status of the managed device 11C detected by the detection unit 11C1 to the server unit 12, and the communication unit 11G2 transmits information indicating the status of the managed device 11G detected by the detection unit 11G1 to the server unit 12. The storage unit of the managed device 11B stores information indicating the status of the managed device 11B, the storage unit of the managed device 11C stores information indicating the status of the managed device 11C, and the storage unit of the managed device 11G stores information indicating the status of the managed device 11G. The information indicating the status of the managed device 11B may include past information indicating the past status of the managed device 11B detected by the detection unit 11B1, setting information of the managed device 11B, alarm information, etc. The information indicating the status of the managed device 11C may include past information indicating the past status of the managed device 11C detected by the detection unit 11C1, setting information of the managed device 11C, alarm information, etc. The information indicating the status of the managed device 11G may include past information indicating the past status of the managed device 11G detected by the detection unit 11G1, setting information of the managed device 11G, alarm information, etc. In the example shown in Fig. 1, the alarm generating units of the managed devices 11B, 11C, ..., 11G generate alarm information (alarm signals) for the managed devices 11B, 11C, ..., 11G based on the status of the managed devices 11B, 11C, ..., 11G detected by the detecting units 11B1, 11C1, ..., 11G1. The alarm generating units determine that an abnormality exists when the electrical signals output by the detecting units 11B1, 11C1, ..., 11G1 fall outside a preset normal range, and generate alarm information. The alarm output units of the managed devices 11B, 11C, ..., 11G display an alarm using an alarm lamp, output an alarm sound using a buzzer, etc., based on the alarm information generated by the alarm generating units. In another example, the configuration of the managed devices 11B, 11C, . . . , 11G may be different from the configuration of the managed device 11A.

[0015] In the example shown in FIG. 1, the server unit 12 includes a communication unit 121, a processing unit 122, and a storage unit 123. The communication unit 121 communicates with the managed devices 11A-11G, the operation terminal device 13, and the operation terminal device 14. The communication unit 121 receives information indicating the status of the managed devices 11A-11G transmitted by the communication units 11A2-11G2. The communication unit 121 also transmits the received information indicating the status of the managed devices 11A-11G to the operation terminal device 13 and / or the operation terminal device 14. The processing unit 122 accepts and processes information received by the communication unit 121 and acquires and processes internal information. The acceptance and processing of information received by the communication unit 121 includes the creation of display data used to display alarms (A), (C), and (F) (see FIG. 2) in the operation terminal device 13 and / or the operation terminal device 14, based on alarm information and the like generated by the alarm generation units of the managed devices 11A to 11G. The communication unit 121 can transmit the display data created by the processing unit 122 to the operation terminal device 13 and the like. The storage unit 123 stores information indicating the status of the managed devices 11A-11G transmitted by the communication units 11A2-11G2 (information indicating the status of the managed devices 11A-11G received by the communication unit 121). The storage unit 123 stores information indicating the status of the managed devices 11A-11G acquired by the operation terminal device 13 via the server unit 12. When the operation terminal device 14 requests information indicating the status of the managed devices 11A-11G under a predetermined condition, the processing unit 122 responds to the request for information indicating the status of the managed devices 11A-11G from the operation terminal device 14. The communication unit 121 can transmit the information indicating the status of the managed devices 11A-11G stored in the storage unit 123 to the operation terminal device 14 (the communication unit 141 thereof).

[0016] The storage unit 123 stores a request for information on the operating status of the managed devices 11A-11G (e.g., a request for past operating information) received by the server unit 12 from the operation terminal device 13 in association with a response to the information on the operating status of the managed devices 11A-11G (e.g., a response to past operating information) transmitted from the server unit 12 to the operation terminal device 13. When the processing unit 122 receives an output of a request for information on the operating status of the managed devices 11A-11G from the communication unit 121 from the operation terminal device 14 under a predetermined condition, it acquires the response to the information on the operating status of the managed devices 11A-11G stored in association with the request for information on the operating status of the managed devices 11A-11G from the storage unit 123, and outputs it to the communication unit 121. If the request for information on the operating status of the managed devices 11A-11G or the like is not stored in the memory unit 123, the processing unit 122 outputs a response that there is no memory of a response on the operating status of the managed devices 11A-11G or the like to the communication unit 121, and the communication unit 121 transmits the response output from the processing unit 122 to the operation terminal device 14. If the request for information on the operating status of the managed devices 11A-11G or the like is not stored in the memory unit 123, the processing unit 122 may determine that there is no operation terminal device 13 connected to the corresponding managed devices 11A-11G, and may connect to the managed devices 11A-11G and make a request for information on the operating status or the like. The storage unit 123 may also store in advance a correspondence relationship between a request for information on the driving status of the managed devices 11A-11G (e.g., a request for past driving information) received by the server unit 12 from the operation terminal device 13 and a response to the information on the driving status of the managed devices 11A-11G (e.g., a response to past driving information) transmitted by the server unit 12 to the operation terminal device 13. The processing unit 122 associates the response to the information on the driving status of the managed devices 11A-11G transmitted to the operation terminal device 13 with the request for information on the driving status of the managed devices 11A-11G stored in advance, and stores the correspondence relationship in the storage unit 123. For example, the storage unit 123 includes a plurality of storage locations corresponding to the requests for information on the driving status of the managed devices 11A-11G, and the responses to the information on the driving status of the managed devices 11A-11G are stored in the corresponding storage locations. When a response such as information on the operating status of the managed devices 11A to 11G is stored in a memory location of the memory unit 123 corresponding to a request for information on the operating status of the managed devices 11A to 11G received from the operation terminal device 14, the processing unit 122 outputs the response such as information on the operating status of the managed devices 11A to 11G to the communication unit 121, and the communication unit 121 transmits it to the operation terminal device 14. In addition, when transmitting a response such as information on the operating status of the managed devices 11A to 11G stored in the memory unit 123 in response to a request for information on the operating status of the managed devices 11A to 11G received from the operation terminal device 14, processing may be performed such as indicating that the response was stored in the memory unit 123 and including the source of the response information (the operation terminal device ID that is the destination of the response such as the information on the operating status of the managed devices 11A to 11G stored in the memory unit 123, the operator ID of the operation terminal device 13, etc.).

[0017] 1, the operation terminal device 13 is used by, for example, maintenance personnel for the managed devices 11A to 11G. The operation terminal device 13 includes a communication unit 131, a display unit 132, a request input unit 133, and a processing unit . The communication unit 131 communicates with the communication unit 121, transmits instructions and / or settings, etc. to the server unit 12 and to the managed devices 11A-11G via the server unit 12, and receives information indicating the status of the managed devices 11A-11G transmitted from the managed devices 11A-11G, and / or information and display data created or stored in the server unit 12. The display unit 132 displays information on the operating status and alarm information of the managed devices 11A-11G based on the information and display data received by the communication unit 131. The display unit 132 also displays an operation screen that accepts operations by a user of the operation terminal device 13 (for example, maintenance personnel of the managed devices 11A-11G) and the results of operations by the user of the operation terminal device 13. The request input unit 133 accepts various requests from the user of the operation terminal device 13. The processing unit 134 accepts and processes information provided to the operation terminal device 13 from the outside (operation of the request input unit 133 by maintenance personnel, information from the server unit 12 received by the communication unit 131), and acquires and processes internal information (information stored in a storage unit (not shown), information generated internally, etc.).

[0018] For example, the request input unit 133 of the operation terminal device 13 accepts an operation by a maintenance personnel to request information on the past operating conditions of any of the managed devices 11A to 11G (for example, the managed device 11A). The processing unit 134 creates a request for the past operating information of the managed device 11A, and outputs it to the communication unit 131. The communication unit 131 transmits the request for the past operating information of the managed device 11A to the server unit 12. The communication unit 121 of the server unit 12 receives a request for the past operating information of the managed device 11A from the operation terminal device 13, and outputs it to the processing unit 122. The processing unit 122 creates a request for the past operating information of the specified managed device 11A based on the received request for the past operating information of the managed device 11A, and outputs it to the communication unit 121 and the storage unit 123. The communication unit 121 transmits the request for the past operating information of the managed device 11A to the managed device 11A. The storage unit 123 stores the request for the past operating information of the managed device 11A. The communication unit 11A2 of the managed device 11A receives the request for the past operating information of the managed device 11A and outputs it to a processing unit (not shown). The processing unit creates a response to the past operating information of the managed device 11A based on information indicating the past operating conditions of the managed device 11A stored in a storage unit (not shown), and transmits it from the communication unit 11A2 to the server unit 12. The server unit 12 receives the response to the past operating information of the managed device 11A in the communication unit 121, creates a response to the past operating information of the managed device 11A addressed to the operation terminal device 13 in the processing unit 122, and outputs it to the communication unit 121 and the storage unit 123. The communication unit 121 transmits the response to the past operating information of the managed device 11A to the operation terminal device 13. The storage unit 123 stores the response to the past operating information of the managed device 11A in association with the request for the past operating information of the managed device 11A. The response of the past operating information of the managed device 11A is received by the communication unit 131 of the operation terminal device 13, and the past operating conditions of the managed device 11A are displayed by the display unit 132. Here, an example has been shown in which the operation terminal device 13 requests past operating information of the managed device 11A, and the request for past operating information of the managed device 11A is stored in the memory unit 123, but this is not limited to the example. The information that the operation terminal device 13 acquires from the managed devices 11A to 11G may include information regarding the operating status other than the past operating information (information regarding the current operating status, etc.), setting information or alarm information stored in the managed devices 11A to 11G, etc.

[0019] 1, the operation terminal device 14 is used by, for example, a manager (experienced maintenance personnel) of the maintenance personnel of the managed devices 11A to 11G. The operation terminal device 14 includes a communication unit 141, a display unit 142, a request input unit 143, and a processing unit 144, and is configured in the same manner as the operation terminal device 13. The operation terminal device 14 can acquire information stored in the memory unit 123 when the operation terminal device 13 is communicating with the managed devices 11A to 11G via the server unit 12 to request and respond to information on operating conditions, etc.

[0020] For example, in the operation terminal device 13, the request input unit 133 accepts a request for information on the operating status of any of the managed devices 11A to 11G (for example, the managed device 11A) (such as a request for information on past operating status), the processing unit 134 creates a request for information on the operating status of the managed device 11A, the communication unit 131 performs connection processing with the server unit 12, and transmits the request for information on the operating status of the managed device 11A to the communication unit 121. In the server unit 12, based on the request for information on the operating status of the managed device 11A received by the communication unit 121, the processing unit 122 creates a request for information on the operating status of the managed device 11A addressed to the managed device 11A, the communication unit 121 performs connection processing with the managed device 11A, and transmits the request for information on the operating status of the managed device 11A to the managed device 11A, which receives it. At this point, the operation terminal device 13 is connected to the managed device 11A via the communication line CL1 and the communication line CL2. Here, the managed device 11A cannot communicate with other operation terminal devices, that is, cannot communicate with the operation terminal device 14, while communicating with the operation terminal device 13 (while in a connected state via the server unit 12). In the managed device 11A, in response to the received request for information on the operating status of the managed device 11A, a processing unit (not shown) creates a response for the information on the operating status of the managed device 11A, and the communication unit 11A2 transmits it to the server unit 12. The server unit 12 creates a response for the information on the operating status of the managed device 11A addressed to the operation terminal device 13 based on the response for the information on the operating status of the managed device 11A received by the communication unit 121, and the communication unit 121 transmits it to the operation terminal device 13. In the operation terminal device 13, the communication unit 131 receives the response for the information on the operating status of the managed device 11A, the processing unit 134 processes it, and the display unit 132 displays the operating status of the managed device 11A. At this point, the connection state between the operation terminal device 13 and the managed device 11A is maintained, and the connection state is continued when a new request for information on the operating status is made from the operation terminal device 13. That is, when the request input unit 133 of the operation terminal device 13 receives a request for information indicating the status of the managed device 11A, the communication unit 11A2 of the managed device 11A transmits the information indicating the status of the managed device 11A detected by the detection unit 11A1 to the server unit 12. The storage unit 123 of the server unit 12 stores the information indicating the status of the managed device 11A transmitted by the communication unit 11A2 and the request for information indicating the status of the managed device 11A received by the request input unit 133 in association with each other.

[0021] When the operation terminal device 13 and the managed device 11A are in a connected state, the operation terminal device 14 can acquire information stored in the storage unit 123. For example, the request input unit 143 of the operation terminal device 14 accepts an operation by a maintenance personnel manager requesting information on the operating status of the managed device 11A. The processing unit 144 creates a request for information on the operating status of the managed device 11A, and outputs it to the communication unit 141. The communication unit 141 transmits the request for information on the operating status of the managed device 11A to the server unit 12. The communication unit 121 of the server unit 12 receives a request for information on the operating status of the managed device 11A from the operation terminal device 14, and outputs the request to the processing unit 122. The processing unit 122 determines whether the managed device 11A is in a connected state with another operation terminal device (for example, the operation terminal device 13), and if the managed device 11A is in a connected state with the other operation terminal device, acquires or creates a response corresponding to the request for information on the operating status of the managed device 11A received from the operation terminal device 14 from the information stored in the storage unit 123, and outputs the response to the communication unit 121. The communication unit 121 transmits the response for the information on the operating status of the managed device 11A to the operation terminal device 14. The communication unit 141 of the operation terminal device 14 receives the response for the information on the operating status of the managed device 11A, and the display unit 142 displays the operating status of the managed device 11A on the display screen of the operation terminal device 14. The operation terminal device 14 can receive a response such as information on the operating status of the managed device 11A that has been created based on the information stored in the storage unit 123. The information stored in the storage unit 123 is information on the operating status of the managed device 11A, and can include information on the current operating status of the managed device 11A (such as the detection result of the detection unit 11A1), past information indicating past statuses (such as data for the past month or week), setting information of the managed device 11A, alarm information (such as anomaly history), and the like. In other words, when the operation terminal device 13 is connected to the managed device 11A via the communication line CL1 and the communication line CL2, if the request input unit 143 of the operation terminal device 14 receives a request for information indicating the status of the managed device 11A, the communication unit 121 of the server unit 12 transmits to the communication unit 141 of the operation terminal device 14 information indicating the status of the managed device 11A that is stored in the memory unit 123 in correspondence with the request for information indicating the status of the managed device 11A received by the request input unit 133 of the operation terminal device 13.

[0022] Even when the operation terminal device 13 and the managed device 11A are connected, the operation terminal device 14 can perform an operation to request information on the operating status of the managed device 11A and obtain a response to the request for information on the operating status of the managed device 11A stored in the storage unit 123. For example, the manager of the maintenance personnel who uses the operation terminal device 13 can obtain and confirm the same information as the information obtained by the maintenance personnel of the managed device by the manager, by using the operation terminal device 14. In the operation adjustment, maintenance management, and fault repair of the managed device 11A, the maintenance personnel who directly perform the work and the manager can share recognition of the situation regarding the managed device 11A, making it easier for both to cooperate and consider and deal with the problem. In addition, the manager can provide advice and guidance to the maintenance personnel of the managed device based on specific information. Here, the operation terminal device 14 can receive a response such as information on the driving status stored in the storage unit 123 when the managed device 11A is in a connected state with another operation terminal device, but this is not limited to the above. For example, the operation terminal device 14 may be able to receive a response such as information on the driving status stored in the storage unit 123 when the managed device 11A is in a connected state with another operation terminal device and until a certain time has elapsed since the connection was terminated. By placing a certain restriction on the connection between the operation terminal device 14 and the managed device 11A, it is possible to prevent the operation terminal device 13 from being prevented from acquiring information on the driving status from the managed device 11A via the server unit 12.

[0023] Also, here, it has been stated that the managed device 11A cannot communicate with other operation terminal devices while communicating with the operation terminal device 13 (while in a connected state via the server unit 12), but even if the managed device 11A can communicate with a plurality of operation terminal devices simultaneously, the information stored in the memory unit 123 is useful. For example, when the operation terminal device 13 receives an alarm notification of the managed device 11A, the maintenance personnel using the operation terminal device 13 acquires information on the current operating status of the managed device 11A from the operation terminal device 13 via the server unit 12. During this process, the storage unit 123 stores the information on the current operating status of the managed device 11A acquired by the operation terminal device 13. When the manager of the maintenance personnel requests information on the current operating status of the managed device 11A addressed to the managed device 11A from the operation terminal device 14, the server unit 12 transmits a response (including the operation terminal device user ID at the time the response was stored) corresponding to the request for information on the current operating status of the managed device 11A stored in the storage unit 123 to the operation terminal device 14. For this reason, the manager using the operation terminal device 14 can share the same information as the maintenance personnel using the operation terminal device 13, and can cooperate to effectively handle tasks such as alarm cause investigation, inspection, operation adjustment, and repair based on specific information on the current operating status of the managed device 11A. In addition, the manager can provide advice and guidance to the maintenance personnel based on the specific information.

[0024] Fig. 2 is an example of a display screen of the operation terminal device 13 that is displayed when an alarm occurs in the managed devices 11A to 11G. The display screen shown in Fig. 2 is a screen that is displayed first after a login operation of the operation terminal device 13 is performed by a maintenance person, for example. 2, the managed devices 11A to 11G are displayed for each management group (OOOO Company, XXX Company), and an alarm occurrence is displayed in the managed devices 11A, 11B, 11C, and 11G. The operation terminal device 13 receives an operation by the maintenance personnel to specify a line on the display screen of the operation terminal device 13 that displays the model, model number, abnormality content, reception date and time, and base, and creates a request for information on the current operating status, and requests information on the current operating status of any of the managed devices 11A, 11B, 11C, and 11G via the server unit 12.

[0025] When the maintenance personnel performs an operation to specify a row indicating information on the managed device 11A on the display screen (FIG. 2) of the operation terminal device 13, the request input unit 133 creates a request for information on the operating status at the time of the alarm occurrence of the managed device 11A and a request for information on the current operating status. The operation terminal device 13 requests the server unit 12 for information on these two operating statuses. The processing unit 122 of the server unit 12 creates a response for information on the operating status of the managed device 11A at the time of the alarm occurrence, addressed to the operation terminal device 13, based on the information on the operating status of the managed device 11A at the time of the alarm occurrence stored in the storage unit 123, and further creates a request for information on the current operating status of the managed device 11A addressed to the managed device 11A. The managed device 11A receives the request for information on the current operating status of the managed device 11A from the server unit 12, and a processing unit (not shown) collects the detection results of the detection unit 11A1, and creates a response for information on the current operating status of the managed device 11A addressed to the server unit 12. The information on the current operating status of the managed device 11A is information at the time when the detection results are collected, and if a sampling period is set in the detection unit 11A1, it is information of the latest sampling period. The server unit 12 transmits the response of the information on the operating status of the managed device 11A at the time of the alarm occurrence and the response of the information on the current operating status of the managed device 11A to the operation terminal device 13, and the operation terminal device 13 receives these responses and displays the operating status of the managed device 11A at the time of the alarm occurrence and the current operating status (FIG. 3). The response of the information on the operating status of the managed device 11A at the time of the alarm occurrence and the response of the information on the current operating status of the managed device 11A may be transmitted from the server unit 12 to the operation terminal device 13 at the same time, or may be transmitted at different timings. For example, the server unit 12 may promptly transmit the response of the information on the operating status of the managed device 11A at the time of the alarm occurrence, which is created based on the memory of the memory unit 123, to the operation terminal device 13, and then receive the response of the information on the current operating status of the managed device 11A from the managed device 11A, and then create a response of the information on the current operating status of the managed device 11A addressed to the operation terminal device 13, and transmit it to the operation terminal device 13.

[0026] FIG. 3 is an example of a display screen showing the operating status of the managed device 11A at the time of the occurrence of an alarm and the current operating status. In the upper part of the display screen shown in FIG. 3, the model "SQ(AB11)" and the device ID (model number) "012345611A" of the managed device 11A selected on the display screen of FIG. 2 are displayed. In the left part of the display screen (area displaying "alarm list"), the operating status of the managed device 11A at the time of the occurrence of an alarm is displayed. When an alarm occurs in the managed device 11A, information on the operating status at the time of the occurrence of an alarm is transmitted from the managed device 11A to the server unit 12 and stored in the storage unit 123. In the example in which the managed device 11A is a boiler, the operating status at the time of the occurrence of an alarm includes a water level state (lower than the lower limit, low, medium, high, higher than the upper high limit), a water level sensor, a feed water temperature, a feed water pump frequency, a chemical injection device output, a water quality (feed water, boiler water), and the like. 3 (area displaying "current operating status") displays the current operating status of the managed device 11A acquired from the managed device 11A. An "air filter" that is determined to be abnormal by the managed device 11A (or the server unit 12) is displayed in color. When the operation terminal device 13 receives a response of information on the operating status of the managed device 11A at the time of the occurrence of an alarm, and then receives a response of information on the current operating status of the managed device 11A, first, the operating status of the managed device 11A at the time of the occurrence of the alarm is displayed in the left portion of the display screen in Fig. 3, and the right portion of the display screen indicates that the display of information is waiting. After that, the operation terminal device 13 receives the response of information on the current operating status of the managed device 11A, and displays the current operating status of the managed device 11A in the right portion of the display screen.

[0027] The operation terminal device 14 displays in a display format similar to that of the display screen of the operation terminal device 13 (FIGS. 2 and 3). When the operation terminal device 13 and the operation terminal device 14 display the management group and the managed devices according to the maintenance personnel who performs the login operation, the managed devices displayed on the screen that is first displayed after the maintenance personnel performs the login operation of the operation terminal device 13 or the operation terminal device 14 may not match between the operation terminal device 13 and the operation terminal device 14. Here, the operation terminal device 13 and the operation terminal device 14 display at least the managed devices 11A to 11F (displaying the management groups XXX Co., Ltd. and XXX Co., Ltd.). For example, during the period when the operation terminal device 13 and the managed device 11A are in a connected state, if an operation is performed on the display screen of the operation terminal device 14 displayed in a format similar to that of Figure 2 to specify the same row of the managed device 11A as the row previously specified on the display screen of the operation terminal device 13 (the row displaying the model, model number, abnormality content, reception date and time, and location, etc. of the managed device 11A), the operation terminal device 14 will transmit to the server unit 12 a request for information on the operating status of the managed device 11A at the time an alarm occurred and a request for information on the current operating status. The server unit 12 creates a response of information on the operating status of the managed device 11A at the time of the alarm occurrence, addressed to the operation terminal device 14, based on the information on the operating status of the managed device 11A at the time of the alarm occurrence stored in the storage unit 123. Also, the server unit 12 creates a response of information on the current operating status of the managed device 11A, addressed to the operation terminal device 14, based on the response of information on the current operating status of the managed device 11A stored in the storage unit 123. The server unit 12 transmits the response of information on the operating status of the managed device 11A at the time of the alarm occurrence and the response of information on the current operating status to the operation terminal device 14. The operation terminal device 14 receives the information transmitted from the server unit 12, and displays the operating status of the managed device 11A at the time of the alarm occurrence and the current operating status in a format similar to that of FIG. 3. In addition to the display in a format similar to that of FIG. 3 on the operation terminal device 14, it may be displayed that the information on the current operating status of the managed device 11A displayed is information acquired by the operation terminal device 13 from the managed device 11A.

[0028] Even when the operation terminal device 13 and the managed device 11A are connected, the operation terminal device 14 can acquire a response corresponding to the request for information on the operating status of the managed device 11A stored in the storage unit 123 by performing an operation to request information on the operating status of the managed device 11A. The operation terminal device 13 or the operation terminal device 14 creates a request for information on the operating status of the managed device 11A by an operation to specify the display of the display screen as shown in Fig. 2 as an example. This makes it possible to pattern the requests for information on the operating status of the managed device 11A created by the operation terminal device 13 and the operation terminal device 14, and makes it easy to associate the request for information on the operating status of the managed device 11A with the response thereto. In addition, since the operating status of the managed device 11A displayed on the display screen of the operation terminal device 13 and the operating status of the managed device 11A displayed on the display screen of the operation terminal device 14 are in the same display format, the operator of the operation terminal device 13 and the operator of the operation terminal device 14 can exchange opinions and give advice while looking at the same display even if they are in different locations. For example, when the operation terminal device 13 is used by a maintenance person in charge of the managed device 11A and the operation terminal device 14 is used by a manager of the maintenance person (a skilled maintenance person), the maintenance person who directly performs the work and the manager can share recognition of the status of the managed device 11A while looking at the same display in operation adjustment, maintenance management, and fault repair of the managed device 11A, making it easy for both to cooperate in considering and dealing with the problem. In addition, the manager can give advice and guidance to the maintenance person based on specific information.

[0029] 4 shows a main work flow in which, when an alarm is notified from the managed device 11A to the operation terminal device 13 via the server unit 12, a maintenance person in charge of the managed device 11A uses the operation terminal device 13 to check the operating status of the relevant managed device 11A and investigate the cause of the alarm. In this process, the server unit 12 stores information shared between the operation terminal device 13 and the operation terminal device 14 in the storage unit 123. Here, it is assumed that the operation terminal device 13 and the server unit 12 are connected. When the managed device 11A generates an alarm (S1), it creates an equipment alarm notification including information on the operating status at the time the alarm occurred (S2). The managed device 11A performs connection processing with the server unit 12 (S3) and transmits the equipment alarm notification to the server unit 12 (S4). The server unit 12 receives the equipment alarm notification (S5), and stores information on the operating condition at the time the alarm occurred in association with the date and time of occurrence (date and time of receipt by the server unit) in the storage unit 123 (S6). The server unit 12 creates an alarm notification addressed to the operation terminal device 13 (S7) and transmits it (S8). The operation terminal device 13 receives the alarm notification (S9), and the display unit 132 displays the alarm on the display screen (for example, FIG. 2) (S10).

[0030] When the maintenance personnel confirms the occurrence of an alarm in the managed device 11A through the display of the operation terminal device 13 (for example, FIG. 2), the maintenance personnel inputs a request for information on the current operating status (hereinafter, referred to as an operating information 1 request) to the operation terminal device 13 in order to confirm the current operating status of the managed device 11A. The operation terminal device 13 creates an operating information 1 request (S11) and transmits the operating information 1 request to the server unit 12 (S12). The server unit 12 receives the operating information 1 request (S13) and creates an equipment operating information 1 request addressed to the specified managed device 11A (S14). The server unit 12 makes a connection request to the specified managed device 11A (S15) and transmits the equipment operating information 1 request (S16). The specified managed device 11A receives the equipment operating information 1 request (S17), collects information indicating the current operating status including information such as the detection result of the detection unit 11A1 of the managed device 11A, and creates an equipment operating information 1 response (S18). The managed device 11A transmits a device operation information 1 response to the server unit 12 (S19). The server unit 12 receives the device operation information 1 response (S20) and creates an operation information 1 response including information on the current operation status of the managed device 11A, addressed to the operation terminal device 13, based on the device operation information 1 response (S21). The server unit 12 transmits the operation information 1 response to the operation terminal device 13 (S22) and stores it in the storage unit 123 (S23). The operation terminal device 13 receives the operation information 1 response (S24) and displays the current operation status of the managed device 11A (S25) (for example, the right display portion of FIG. 3).

[0031] In order to confirm the current operating status of the managed device 11A and to confirm the progress of the operating status up to the present, the maintenance personnel inputs a request for information on the operating status for the past week (hereinafter, referred to as an operating information 2 request) to the operation terminal device 13. The operation terminal device 13 creates an operating information 2 request (S26) and transmits the operating information 2 request to the server unit 12 (S27). The server unit 12 receives the operating information 2 request (S28) and creates an equipment operating information 2 request addressed to the specified managed device 11A (S29). The server unit 12 transmits the equipment operating information 2 request (S30). The specified managed device 11A receives the equipment operating information 2 request (S31) and generates an equipment operating information 2 response based on information on the past operating status including information such as past detection results of the detection unit 11A1 stored in a memory unit (not shown) of the managed device 11A (S32). The managed device 11A transmits the equipment operating information 2 response to the server unit 12 (S33). After the server unit 12 receives the response to the device operation information 2 (S34), the process (S34 to S39) until the operation terminal device 13 displays the operating status of the managed device 11A indicated by the response to the device operation information 2 is performed in the same manner as in the case of the response to the operation information 1. The server unit 12 stores the response to the operation information 2 in the storage unit 123 (S37).

[0032] The maintenance personnel checks the current and past operating conditions of the managed device 11A, and when the response to the alarm of the managed device 11A is finished, inputs a request to terminate communication between the operation terminal device 13 and the managed device 11A (hereinafter, referred to as a connection termination request) to the operation terminal device 13. The operation terminal device 13 creates a connection termination request (S40) and transmits the connection termination request to the server unit 12 (S41). The server unit 12 receives the connection termination request (S42) and creates an equipment connection termination request addressed to the specified connected managed device 11A. The server unit 12 transmits the equipment connection termination request (S44). The managed device 11A receives the equipment connection termination request (S45) and terminates the connection with the server unit 12 (S46). When the maintenance personnel terminates communication with the server unit 12, the maintenance personnel inputs a request to terminate communication between the operation terminal device 13 and the server unit 12 (hereinafter referred to as a server connection termination request) to the operation terminal device 13. The operation terminal device 13 creates a server connection termination request (S47) and transmits the server connection termination request to the server unit 12 (S48). The server unit 12 receives the server connection termination request (S49) and performs server connection termination processing (S50).

[0033] Here, as an example, the case where the responses of driving information 1 and driving information 2 are stored in the storage unit 123 is shown, but the present invention is not limited to this. The information stored in the storage unit 123 may be information that can be displayed commonly on the operation terminal device 13 and the operation terminal device 14 based on the response of the managed device 11A. In addition, the response of, for example, the driving information of the managed device 11A (here, the driving information 1 response and the driving information 2 response) stored in the storage unit 123 may be one or more. The request for the operation information 1 and the operation information 2 may be made as information collection during preparation and / or work such as inspection and adjustment of the managed device 11A at the installation location of the managed device 11A, or may be made at a location (for example, an office, another factory, etc.) away from the managed device 11A. Furthermore, the information on the past operation status is not limited to one week, but may be one day or one month, or any date and time in the past may be specified.

[0034] The operation terminal device 14 can acquire the same information as that acquired by the operation terminal device 13 from the storage unit 123 while the operation terminal device 13 and the managed device 11A are communicating via the server unit 12 (FIG. 5). In FIG. 5, a connection start (first time) indicates that the operation terminal device 13 has started communicating with the managed device 11A via the server unit 12, and a connection end (second time) indicates that the operation terminal device 13 has ended communication with the managed device 11A. 5 shows an example in which the operation terminal device 13 requests driving information 1 and driving information 2, and responses to the requests stored in the storage unit 123 are used for information sharing between the operation terminal device 13 and the operation terminal device 14. For example, when an alarm of the managed device 11A shown in FIG. 4 is displayed on the operation terminal device 13, the operation terminal device 13 requests the managed device 11A for driving information 1 and driving information 2 via the server unit 12. The operation terminal device 13 creates an operation information 1 request (S1) and transmits the operation information 1 request to the server unit 12 (S2). The server unit 12 receives the operation information 1 request (S3) and generates an equipment operation information 1 request addressed to the specified managed device 11A (S4). The server unit 12 receives an equipment operation information 1 response from the managed device 11A (S5) and generates an operation information 1 response addressed to the operation terminal device 13 based on the response and including information on the current operating status of the managed device 11A (S6). The server unit 12 transmits the operation information 1 response to the operation terminal device 13 (S7) and stores it in the storage unit 123 (S8). The operation terminal device 13 receives the operation information 1 response (S9) and displays the current operating status of the managed device 11A (S10) (for example, the right display part of FIG. 3).

[0035] In a state where the operation terminal device 13 and the managed device 11A are communicating with each other via the server unit 12, the operation terminal device 14 creates an operation information 1 request for the managed device 11A (S11) and transmits it to the server unit 12 (S12). When the managed device 11A and the operation terminal device 13 are communicating with each other via the server unit 12 and a response to the operation information 1 request received from the operation terminal device 14 is stored in the storage unit 123, the server unit 12 creates an operation information 1 reference response based on the information stored in the storage unit 123 (S14) and transmits it to the operation terminal device 14 (S15). The operation terminal device 14 receives the operation information 1 reference response (S16) and displays the current operation status of the managed device 11A (S17). The process from step S18 in which the operation terminal device 13 creates a request for driving information 2 to step S34 in which the operation terminal device 14 displays the driving status of the managed device 11A is performed similarly to the process from step S1 in which the operation terminal device 13 creates a request for driving information 1 to step S17 in which the operation terminal device 14 displays the driving status of the managed device 11A. Moreover, the process from step S35 in which the operation terminal device 13 creates a request to terminate the connection with the managed device 11A to step S42 in which the server unit 12 performs server connection termination processing is performed similarly to the process from step S40 in which the operation terminal device 13 creates a request to terminate the connection with the managed device 11A to step S50 in which the server unit 12 performs server connection termination processing in FIG. 4.

[0036] Here, the operation terminal device 14 acquires the driving information 1 reference response after the driving information 1 response is stored in the storage unit 123, and acquires the driving information 2 reference response after the driving information 2 response is stored in the storage unit 123, but this is not limited to the above. The operation terminal device 14 may acquire the driving information 1 reference response and the driving information 2 reference response after the driving information 1 response and the driving information 2 response are stored in the storage unit 123. In addition, when the operation terminal device 14 requests the server unit 12 for information on the driving situation that is not stored in the storage unit 123 while the operation terminal device 13 and the managed device 11A are communicating with each other via the server unit 12, the server unit 12 responds that there is no information stored in the storage unit 123. Although FIG. 4 does not describe that the information stored in the storage unit 123 is deleted, the information stored in the storage unit 123 is deleted after a predetermined period of time or by a predetermined operation. For example, the information stored in the storage unit 123 may be deleted after a predetermined time has elapsed since the operation terminal device 13 transmitted a request to terminate communication with the managed device 11A (S35) (for example, when the server unit 12 receives a server connection termination request from the operation terminal device 13 and performs server connection termination processing (S42)), or after a predetermined time has elapsed since the server connection termination processing. Alternatively, the communication unit 121 may transmit information indicating the status of the managed device 11A stored in the storage unit 123 to the communication unit 141, and after a predetermined time has elapsed, the information indicating the status of the managed device 11A stored in the storage unit 123 may be deleted. Furthermore, a maintenance person who uses the operation terminal device 13 or the operation terminal device 14 may perform an operation to delete the information stored in the storage unit 123 from the operation terminal device 14. By appropriately managing the information storage period of the storage unit 123, it is possible to prevent the operation terminal device 14 from acquiring less necessary information. Also, it is possible to ensure the storage capacity of the storage unit 123.

[0037] Even when the operation terminal device 13 and the managed device 11A are connected, the operation terminal device 14 can perform an operation to request information on the operating status of the managed device 11A and obtain a response corresponding to the request for information on the operating status stored in the storage unit 123. For example, a manager of the maintenance personnel who uses the operation terminal device 13 can obtain and confirm the same information as that obtained by the maintenance personnel of the managed device by using the operation terminal device 14. In the operation adjustment, maintenance management, and fault repair of the managed device 11A, the maintenance personnel who directly perform the work and the manager can share recognition of the situation regarding the managed device 11A, making it easy for both parties to cooperate in considering and dealing with the problem. In addition, the manager can provide advice and guidance to the maintenance personnel based on specific information.

[0038] Although the present invention has been described above using the embodiments, the present invention is not limited to these embodiments and examples, and various modifications and substitutions can be made without departing from the scope of the present invention. The configurations described in the above-mentioned embodiments and examples may be appropriately combined. For example, there may be a plurality of operation terminal devices 14. In this case, information on the operating conditions of the managed devices 11A to 11G acquired by one operation terminal device 13 is stored in the storage unit 123, and the information stored in the storage unit 123 can be shared by the plurality of operation terminal devices 14. Also, there may be a plurality of operation terminal devices 13. In this case, a plurality of storage units 123 are provided in one-to-one correspondence with the plurality of operation terminal devices 13, and the operation terminal device 14 can share information with any of the operation terminal devices 13 by specifying the storage unit 123 with which the information is to be shared.

[0039] In addition, all or part of the functions of each unit of the remote management system 1 in the above-mentioned embodiment may be realized by recording a program for realizing these functions on a computer-readable recording medium, and reading and executing the program recorded on the recording medium into a computer system. Note that the "computer system" here includes hardware such as the OS and peripheral devices. In addition, the term "computer-readable recording medium" refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, and storage units such as hard disks built into computer systems. Furthermore, the term "computer-readable recording medium" may also include those that dynamically hold a program for a short period of time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, and those that hold a program for a certain period of time, such as a volatile memory inside a computer system that serves as a server or client in such cases. Furthermore, the above program may be one that realizes part of the above-mentioned functions, or may be one that can realize the above-mentioned functions in combination with a program already recorded in the computer system. [Explanation of symbols]

[0040] 1... remote management system, 11A, 11B, 11C, 11D, 11E, 11F, 11G... managed devices, 11A1, 11B1, 11C1, 11G1... detection unit, 11A2, 11B2, 11C2, 11G2... communication unit, 12... server unit, 121... communication unit, 122... processing unit, 123... storage unit, 13... operation terminal device, 131... communication unit, 132... display unit, 133... request input unit, 134... processing unit, 14... operation terminal device, 141... communication unit, 142... display unit, 143... request input unit, 144... processing unit, CL1, CL2... communication line

Claims

1. The system includes a device to be managed, a server unit, a first operation terminal device, and a second operation terminal device, the device to be managed and the server unit are connected via a first communication line; A remote management system in which the first operation terminal device and the second operation terminal device are connected to the server unit via a second communication line, The managed device is a first communication unit that transmits information indicating a status of the managed device to the server unit; The server unit is a second communication unit that receives information indicating a status of the device to be managed that is transmitted by the first communication unit; A storage unit, The first operation terminal device is A third communication unit; a first request input unit that receives a request for information indicating a status of the managed device; a first display unit that displays information indicating a status of the device to be managed, The second operation terminal device is A fourth communication unit; and a second request input unit that receives a request for information indicating a status of the managed device; a second display unit that displays information indicating a status of the device to be managed, when the first request input unit receives a request for information indicating a status of the managed device, the information indicating the status of the managed device transmitted by the first communication unit is received by the second communication unit and stored in the storage unit in association with the request for information indicating the status of the managed device received by the first request input unit; when the first operation terminal device is connected to the managed device via the first communication line and the second communication line, and the second request input unit receives a request for information indicating a status of the managed device, the second communication unit transmits to the fourth communication unit information indicating the status of the managed device, the information being collected in the managed device in response to the first request input unit receiving the request for information indicating the status of the managed device, and stored in the memory unit in association with the request for information indicating the status of the managed device received by the first request input unit; the fourth communication unit receives the information indicating the status of the managed device transmitted by the second communication unit as a response to a request for information indicating the status of the managed device accepted by the second request input unit, the second display unit displays, for the managed device indicated by the response received by the fourth communication unit among the plurality of managed devices, a display item that is an item of information to be displayed on the second display unit, at the same display position as the display position at which the display item is displayed on the first display unit, in a display format determined by a display item that is an item of information to be displayed on the second display unit and a display position at which the display item is displayed on the second display unit, thereby displaying, for the managed device displayed by the first display unit, information indicating the status of the managed device received by the fourth communication unit in a display format similar to the display format of the first display unit. Remote management system.

2. the first request input unit receives a request for information indicating a status of the managed device, and the information indicating the status of the managed device transmitted by the first communication unit is stored in the storage unit in association with the request for information indicating the status of the managed device received by the first request input unit, when the first operation terminal device is connected to the managed device via the first communication line and the second communication line, and the second request input unit receives a request for information indicating a status of the managed device, the second communication unit transmits to the fourth communication unit information indicating the status of the managed device stored in the storage unit in association with the request for information indicating the status of the managed device received by the first request input unit; The remote management system of claim 1 .

3. The second communication unit transmits information indicating a status of the managed device stored in the storage unit to the fourth communication unit, and after a predetermined time has elapsed, The information indicating the status of the managed device stored in the storage unit is erased. The remote management system of claim 1 .

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