Information provision system for building equipment and information provision method for building equipment

Abstract

The invention provides an information providing system for building equipment and an information providing method for building equipment. A user of building equipment is difficult to know the maintenance plan of the building equipment and the coping condition of a maintenance manager. The information providing system for building equipment provides maintenance information of the building equipment received from a remote monitoring device for monitoring the building equipment, and is provided with: a receiving unit for receiving a provision request for the maintenance information from a user terminal; access permission information which is information for determining whether or not provision of the maintenance information to the user terminal is possible; and an access permission determination unit that uses the access permission information to determine whether or not the provision of the maintenance information for which the provision request has been received by the reception unit is permitted.

Description

Technical Field

[0001] The present invention relates to a building equipment information providing system and a building equipment information providing method. Background Art

[0002] When a malfunction occurs in an elevator or building equipment, there is a service that allows the building manager to check the fault detection status in the maintenance company's monitoring system and the dispatch status of maintenance personnel.

[0003] However, since this service is intended for building managers who have signed maintenance contracts, in situations such as when a key falls between an elevator and the lobby, elevator passengers have no choice but to contact the operator at the elevator's monitoring center or ask the building manager to learn when maintenance personnel have been dispatched.

[0004] Since the building manager is not necessarily near the passengers and is difficult to contact, the operator at the monitoring center is contacted by phone.

[0005] However, the number of operators is limited, making it difficult for passengers to grasp the situation in a timely manner.

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent Document 1: Japanese Patent Application Laid-Open No. 2021-179753

[0009] Patent document 1 discloses an in-building information reference system comprising: a data reference application processing unit, which accepts data reference applications when a user wishes to refer to the operating status of building equipment of other customers in the same building, notifies the application to the customer operation terminal of the target customer user, and processes the procedures for the target customer user to approve or reject the application; an application status management DB, which, when the target customer user approves a data reference application, integrates the data of the target and source customers, stores, and manages the application procedure status in order for the source customer user to refer to the information of the target customer.

[0010] In order for users, building managers, and maintenance personnel of building equipment to understand each other's status, operators at the monitoring center must be involved. However, if requests from users occur frequently at the same time, there will be a shortage of operators to respond.

[0011] Furthermore, the service that allows building managers to check the fault detection status of building equipment and the dispatch status of maintenance personnel is information that can be viewed by the building equipment maintenance contractor, i.e., the building manager. It is not intended to open all viewable information to building users. Summary of the Invention

[0012] The above-mentioned problem is solved by an information providing system for building equipment, which is an information providing system for building equipment that provides maintenance information of building equipment received from a remote monitoring device that monitors the building equipment. The system comprises: a receiving unit that receives a request to provide maintenance information from a user terminal; access permission information, which is information used to determine whether the maintenance information can be provided to the user terminal; and an access permission determination unit that uses the access permission information to determine whether the maintenance information received by the receiving unit in response to the request can be provided.

[0013] Effects of the Invention

[0014] In the present invention, users of building equipment can easily learn about the maintenance plan of the building equipment and the response status of the maintenance person in charge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an example of a system configuration diagram of an elevator information providing system in an embodiment of the present invention.

[0016] Figure 2 This is an example of a flowchart showing the processing of the elevator information providing system in the embodiment of the present invention.

[0017] Figure 3 This is an example of a flowchart showing an abnormality detection process in the embodiment of the present invention.

[0018] Figure 4 This is an example of a flowchart showing the user confirmation process in the embodiment of the present invention.

[0019] Figure 5 This is an example of a flowchart showing the process of setting the information disclosure range in the embodiment of the present invention.

[0020] Figure 6 This is an example of a table showing disclosure range information and access permission information in the embodiment of the present invention.

[0021] Figure 7 1 is an example of a table representing an elevator maintenance table in the embodiment of the present invention.

[0022] Figure 8 This is an example of a table showing building information in the embodiment of the present invention.

[0023] Figure 9 This is an example of a diagram showing a screen of a user terminal in the embodiment of the present invention.

[0024] Description of Reference Signs

[0025] 1: Monitoring center, 2: Information provision device, 3: Elevator, 4: Building manager terminal, 5: Maintenance personnel terminal, 6: Public line network, 7: Remote monitoring network, 8: Internet, 9: Remote monitoring device, 10: Operator terminal, 11, 30: CPU, 12, 31: Main storage device, 13, 32: External storage device, 14, 33: Input / output unit, 15: Abnormality determination unit, 16: Update unit, 17: LCD panel control unit, 18: Elevator maintenance table, 19: Public range information, 20: Building information, 34: Receiving unit, 35: Building equipment determination unit, 36: Access permission determination unit, 37: Access permission update unit, 38: Maintenance information, 39: Access permission information, 40: Two-dimensional barcode, 41: LCD panel, 42: User terminal. DETAILED DESCRIPTION

[0026] Hereinafter, embodiments of the present invention will be described using the accompanying drawings. In the drawings for describing the embodiments, identical components are given the same names and reference numerals as much as possible, and duplicate descriptions are omitted.

[0027] The present invention is not limited to the embodiments described below, but includes various modifications and equivalent structures within the scope of the appended claims. For example, the aforementioned embodiments are described in detail to facilitate understanding of the present invention, but the present invention is not limited to having all the structures described.

[0028] In addition, the processing units and processing modules described in the embodiments may be implemented by hardware by designing part or all of them, for example, using integrated circuits, or by software by having a processor interpret and execute programs that implement various functions.

[0029] The information described in the embodiments may be a table, a database (DB), or data stored in a main memory.

[0030] Hereinafter, an elevator will be described as an example of building equipment.

[0031] [Example]

[0032] Figure 1 This is an example of a system configuration diagram of an elevator information providing system in an embodiment of the present invention.

[0033] In this embodiment, an elevator information providing system is described as an example, but the present invention is also applicable to other building equipment other than elevators that are remotely monitored, such as air conditioning equipment and security systems.

[0034] Passengers using the elevator 3 can use the user terminal 42 to notify the operator of the monitoring center 1 via the public network 6 of a malfunction or request the collection of objects dropped into the elevator's gap.

[0035] The operator uses the operator terminal 10 to access the remote monitoring device 9, confirms the status of the elevator, and requests a response from a passenger to be made to the maintenance terminal 5 held by a maintenance person near the requested elevator via the remote monitoring network 7.

[0036] The operator registers maintenance information such as the elevator's operating status, fault status, and maintenance personnel assignment information from the operator terminal 10 to the remote monitoring device 9 .

[0037] Registered elevator maintenance information is delivered to the information provision device 2 and can be accessed via the Internet from a building manager's terminal 4 (e.g., a smartphone). Here, the term "building manager" refers to the building owner or apartment management association, or a building manager who receives building management authorization from the building owner or apartment management association. Building management authority can be delegated to multiple individuals.

[0038] Since the access authority to the maintenance information device is registered in advance with the information providing device 2 from the building manager terminal 4, the information providing device 2 can be accessed to refer to maintenance information and the like.

[0039] However, since the access rights of the user terminal 42 (smartphone, etc.) of the user using the elevator are not registered in the information providing device, it is necessary to confirm that the user is the elevator user, and only information related to the user can be provided.

[0040] In order to solve such a problem, the configurations of the remote monitoring device 9 and the information providing device 2 will be mainly described.

[0041] In order to remotely monitor the elevator 3 , a remote monitoring device 9 connected to the elevator 3 via a remote monitoring network 7 is provided in the monitoring center 1 .

[0042] The remote monitoring device 9 is implemented as a computer and includes a CPU (Central Processing Unit) 11 , a main storage device 12 , an external storage device 13 such as an HDD (Hard Disk Drive) or an SSD (Solid State Drive), an input / output unit 14 , and the like.

[0043] In this embodiment, an example in which the system is configured using a computer such as a PC (Personal Computer) is described. However, the system may also be configured using a cloud system that virtualizes computer resources.

[0044] The main storage device 12 includes an abnormality specifying unit 15 for receiving an abnormality report of an elevator and an updating unit 16 for updating the contents of an elevator maintenance table.

[0045] The abnormality specifying unit 15 , the updating unit 16 , the liquid crystal panel control unit 17 and the like are implemented as software modules and are executed by the CPU 11 with reference to information such as a table stored in the external storage device 13 .

[0046] The external storage device 13 stores: an elevator maintenance table 18 storing elevator maintenance information, disclosure range information 19 indicating the extent to which the elevator maintenance table can be disclosed to building managers and users, and building information 20 storing the name, location, maintenance contract content, etc. of the building where the elevator is installed.

[0047] The operator terminal 10 is connected to the remote monitoring device 9 , and the operator can input and output data to and from the remote monitoring device 9 via the input / output unit 14 .

[0048] The information providing apparatus 2 is connected to the remote monitoring apparatus 9. In this embodiment, the information providing apparatus 2 is directly connected to the remote monitoring apparatus 9, but it may be connected via a network as long as security is ensured.

[0049] In addition, in this embodiment, the information providing device 2 is configured by hardware independent of the remote monitoring device 9. With such a configuration, high safety of the remote monitoring device 9 that monitors the safe operation of the elevator is ensured.

[0050] If the information providing device 2 is logically constructed in the remote monitoring device 9 as a logically independent system and the security of the remote monitoring device 9 is ensured, the cost of constructing the system can be suppressed, and the information provided to the user can be efficiently copied or shared in the information providing device during operation.

[0051] The information providing device 2 is also realized by a computer and includes a CPU 30 , a main storage device 31 , an external storage device 32 , and an input / output unit 33 .

[0052] The main storage device 31 includes: a receiving unit 34, which receives a request from a building manager or user to view maintenance information related to building equipment; a building equipment identification unit 35, which identifies the building equipment to which the viewing request is received; an access permission determination unit 36, which uses the access permission information 39 stored in the external storage device 32 to determine the access permission (provision permission) of the maintenance information related to the viewing request for maintenance information received in the receiving unit 34; and an access permission updating unit 37, which uses the maintenance information 38 stored in the external storage device 32 to update the access permission information 39.

[0053] The external storage device 32 stores maintenance information 38 as part of the elevator maintenance table and access authority information 39 set for each user. Access authority for users can be set by the building manager and updated by the access authority update unit 37.

[0054] The input / output unit 33 receives information on the elevator maintenance table 18 that can be disclosed to the building manager or user and disclosure range information 19 from the remote monitoring device 9. Furthermore, the access determination unit 36 ​​provides maintenance information 38 to the building manager or user via the Internet 8 based on the determination result of the access determination unit 36.

[0055] The maintenance information 38 receives the updated contents of the elevator maintenance table 18 from the remote monitoring device 9 at predetermined time intervals, but does not need to receive all updated contents, and only needs to receive the information determined by the disclosure range information 19.

[0056] By not sending information that is not open to users or building managers to the information providing device 2, not only the processing burden for information update can be reduced, but also the risk of information leakage can be reduced.

[0057] Since the access rights information added to the disclosure range information 19, i.e., the information related to the disclosure range determined by the administrator, is changed infrequently, the access rights information 39 does not need to be updated in real time. On the other hand, since the latest information updated by the access rights update unit regarding the disclosure range for users must be provided to users in a timely manner, the disclosure range information 19 and the access rights information 39 must be updated in real time.

[0058] Figure 2 This is an example of a flowchart showing the processing of the elevator information providing system in the embodiment of the present invention.

[0059] The operator of the monitoring center 1 receives a request from a user (passenger) via the public network 6 from the user terminal 42 via the telephone 22. An abnormality report of the elevator 3 is received from the remote monitoring device 9 and the elevator user via the remote monitoring network (S1) and is registered in the elevator maintenance table 18 (S2).

[0060] The operator registers the request from the user in the elevator maintenance table 18 using the operator terminal 10 ( S1 ).

[0061] The operator registers maintenance information in the maintenance table (S2). For example, if on-site work is required, a maintenance worker located near the elevator is assigned and the information is registered in the elevator maintenance table 18. Updates to the elevator maintenance table 18 are performed by the operator, maintenance personnel, building manager, and remote monitoring device, all of which are performed by the updating unit 16. Information registered in the maintenance table that can be provided to the building manager based on the disclosure range information is output to the information providing device.

[0062] The receiving unit 34 of the information provision device 2 receives a user's inquiry for maintenance information and user identification information (S3), and performs user identification (S4). If identification fails, the process ends. If identification succeeds (S5), the access rights update unit determines whether the maintenance information can be provided (S6), and updates the access rights (S7).

[0063] When the information providing device 2 receives an inquiry for maintenance information from the user terminal 42 via the Internet, the access permission determination unit determines whether access is permitted based on the access permission information 39 and provides information to the user terminal 42 (S8). Here, the method of providing information is not limited to means such as permission to access the server and delivery of emails based on the access permission information.

[0064] Furthermore, when providing information, all accessible information may be displayed, or items of accessible information may be displayed and information selected by the user may be output.

[0065] When the remote monitoring device 9 receives the input of the maintenance personnel's commission response completion and abnormal response completion, the update unit 16 registers the elevator maintenance form 18. If the registration process is included in the public range information, the update unit 16 instructs the information providing device 2 to update the maintenance information of the information providing device 2.

[0066] The information provision device 2 receives instructions from the update unit 16 and updates the maintenance information. The access permission update unit 37 determines whether the maintenance information has been updated (S9). If the public information has been updated, indicating that the request has been completed or the fault has been addressed, the user's access rights are deleted (S10), terminating the process. If the request has not been completed or the fault has not been addressed, the requested information continues to be provided within the information disclosure range (S8).

[0067] This process can prevent a user terminal permitted to access once from accessing the information providing apparatus for an unnecessarily long time.

[0068] In order to allow users to confirm that maintenance personnel have completed their request or fault response, access rights may be retained for a predetermined period of time after information indicating completion of the request or fault response is registered in the public information. Alternatively, access rights may be retained until a predetermined number of accesses to the information are detected.

[0069] For example, if a key is dropped into the gap of an elevator and is requested for collection, access rights will be retained for about a week after the collection is completed. If access rights are retained after the response is completed so that access can be made more than once, the user can confirm that the response has been completed and go to the building management department to collect the key.

[0070] Figure 3 This is an example of a flowchart showing an abnormality detection process in the remote monitoring device 9 according to the embodiment of the present invention.

[0071] It is determined whether the abnormality specifying unit 15 has specified an abnormality based on the elevator failure report ( S20 ), and whether a request to the control center has been received from the building user ( S21 ).

[0072] In the case of a fault report, the remote monitoring device acquires an identifier of the reporting source and a fault signal code indicating the details of the fault ( S22 ).

[0073] The elevator maintenance table 18 is searched using the acquired identifier to identify the elevator to be monitored in which a failure has occurred ( S23 ).

[0074] Furthermore, the fault location corresponding to the fault code is identified from the elevator maintenance table ( S24 ) and the updating unit 16 updates the fault response information in the elevator maintenance table 18 ( S26 ).

[0075] When a request to the control center is received from a building user, the operator specifies the building of the request source based on keywords such as a portion of an address, a portion of a building name, or a company name related to the location of the building of the request source, and inputs the building and the request details into the remote monitoring device 9 through the input screen of the operator terminal 10 (S25).

[0076] Through the above processing, whether the remote monitoring device receives a report or the operator receives a commission from the user through telephone contact, etc., the fault response information can be registered in the elevator maintenance table.

[0077] Figure 4 This is an example of a flowchart showing the processing of user confirmation in the embodiment of the present invention.

[0078] There is a case where a liquid crystal panel 41 is installed in the elevator car. The liquid crystal panel 41 usually displays information such as the floor registered as the destination floor and the current floor.

[0079] When an elevator malfunctions or a user request is received, the abnormality identification unit 15 in the remote monitoring device 9 identifies an elevator (S30). Referring to the building information 20, it determines whether the identified elevator has an in-car LCD panel 41 (S31). The LCD panel control unit 17 then outputs a two-dimensional barcode display instruction to the elevator identified in S30 (S32).

[0080] In the case of an elevator with an in-car liquid crystal panel, a two-dimensional barcode is displayed on the liquid crystal panel 41 ( S32 ), and the user accesses the URL (Uniform Resource Locator) written in the two-dimensional barcode using the user terminal 42 .

[0081] The receiving unit 34 of the information providing device 2 determines whether the client information is input from the URL (S33). If the input is correct, the two-dimensional barcode on the liquid crystal panel 41 in the car is deleted (S34), and the user authentication is successful (S39).

[0082] The client information can be set as the building information and elevator number information of the client source. In addition, when the liquid crystal panel 41 in the car displays a two-dimensional bar code, a unique two-dimensional bar code can be created every time it is displayed, and the input of the client information can be omitted. When it is confirmed that the URL has been correctly accessed, the process of S34 is carried out.

[0083] If the client information is not entered correctly, the client will be prompted to re-enter. If the client fails to enter the information multiple times, the client will be deemed to have failed to verify the identity.

[0084] If there is no liquid crystal panel in the car, an access from the user is accepted from the URL written in the two-dimensional barcode 40 for maintenance attached in the car by a label or the like (S35).

[0085] Because the URL recorded in the two-dimensional barcode 40 used for normal maintenance does not contain the elevator number information, the operator transmits a random string of characters to the user via the telephone 22 (S36), and the user receives the string of characters from a screen opened from the two-dimensional barcode attached to the car (S37). In addition to the random string of characters, the user can also verify their identity by receiving input of building information such as the building name and the elevator number information.

[0086] It is determined whether the character string received by the receiving unit 34 of the information providing device matches the character string communicated by the operator ( S38 ). If they match, the person authentication is deemed to have succeeded.

[0087] Alternatively, if there is a mismatch, multiple retries are performed, and if a predetermined number of retries is exceeded, the user authentication is considered to have failed.

[0088] Figure 5 This is an example of a flowchart showing the process of setting the information disclosure range in the embodiment of the present invention.

[0089] The access authority updating unit 37 determines whether the maintenance information 38 has been updated based on a fault report within a certain period ( S40 ). If there is a fault report, it determines that the operating status of the building equipment with the fault report can be provided and updates the access authority information 39 to be accessible.

[0090] The access authority update unit 37 then determines whether the maintenance information 38 includes information on shutdown of the building equipment ( S42 ). If the building equipment is shut down, it determines that a recovery prediction time can be provided and updates the access authority information to allow access ( S43 ).

[0091] The access permission updating unit 37 then determines whether the maintenance information 38 includes a maintenance personnel dispatch instruction ( S44 ). If the maintenance personnel dispatch is required, it determines that the maintenance personnel dispatch status can be provided and updates the access permission information 39 to allow access ( S45 ).

[0092] If on-site dispatch of maintenance personnel is not required, access permission updating unit 37 determines whether maintenance information 38 includes a maintenance schedule (S46). If a maintenance schedule is available, it determines that the maintenance schedule is available and updates access permission information 39 to allow access (S47). An example of this is when an elevator stops during an earthquake and an automatic diagnosis determines that temporary restoration is possible, maintenance personnel are notified of the maintenance work schedule, indicating that the elevator is operating based on the temporary restoration.

[0093] If a fault report is available but the maintenance information 38 does not include a maintenance schedule, the access permission update unit 37 determines that information indicating that maintenance personnel are not required can be provided and updates the access permission information 39 to allow access (S48). This applies to situations such as a power outage where maintenance personnel are not required. Even in the case of a power outage, if the elevator is equipped with an emergency battery, the operating status of other nearby buildings can be displayed.

[0094] In addition to the information recorded so far, maintenance information that can be viewed by building managers can be provided, such as the status of other buildings in the event of a large-scale disaster and restoration information of other buildings, depending on the maintenance status.

[0095] Figure 6 : is an example of a table showing the access authority information 39 in the embodiment of the present invention.

[0096] The building name 61, the elevator number information 62 indicating the elevator number, the maintenance information (item) 63 indicating the maintenance content, and the reading permission 64 are stored in correspondence with the reading permission specified by the building manager, namely the manager column 65, and the user column 66 indicating whether there is a public request for progress and whether the user is allowed to read.

[0097] For example, if a user drops their key in the gap of an elevator and wants to retrieve it, since the elevator itself is in operation, the user only needs to have access to the maintenance personnel's dispatch status, just like the access rights of user 2 for elevator B-1 in building B.

[0098] However, even if the user is permitted to view the information in the user field 66 but not in the administrator field 65 , the corresponding information of the maintenance information 38 is not provided.

[0099] Figure 7 1 is an example of a table representing an elevator maintenance table in the embodiment of the present invention.

[0100] The building name 71 , elevator number information 72 , maintenance information (item) 73 and maintenance information 70 are stored in correspondence.

[0101] In this example, elevator A-1 of building A is in normal operation. At 13:10 on 2024 / 1 / 29, maintenance personnel were dispatched, and the service is expected to resume at 14:30 on 2024 / 1 / 29, indicating that no maintenance is scheduled.

[0102] The predicted recovery time is the predicted time when the elevator will resume operation, or the predicted time when the key will be recovered from the pit of the elevator shaft if the user drops the key into the gap of the elevator.

[0103] Figure 8 This is an example of a table showing building information in the embodiment of the present invention.

[0104] The location 81 of the building where the elevator is installed, the elevator number information 82, and the presence or absence 83 of a liquid crystal panel installed in the elevator car are stored in correspondence.

[0105] When receiving an inquiry from an elevator user, the operator can use this table to determine whether user authentication is necessary.

[0106] In addition to the presence or absence of an LCD panel, building information such as the type of elevator maintenance contract can also be stored.

[0107] Figure 9 This is an example of a diagram showing a screen of a user terminal in the embodiment of the present invention.

[0108] This is an example of a screen on a user terminal that is displayed when a user obtains access to elevator maintenance information and refers to necessary information.

[0109] This example shows an example of a "response status screen" 90. The details of a request from the user 91, the name of the building where the requested elevator is installed 92, and the response status of the maintenance personnel 93 are displayed in association with each other. The screen may also include a message display area 94 for displaying incoming messages from the operator and maintenance personnel, and a message sending area 95 for sending messages to the operator and maintenance personnel.

[0110] By displaying this information, the user can confirm whether the content of the request, the building, and the elevator number are correct.

[0111] Furthermore, by viewing the response status 93 , the user can know what response is currently being taken and when the maintenance personnel are scheduled to arrive at the site without going through the building manager or operator.

[0112] The response status 93 in the example of this screen shows that the request was accepted at 13:00 on January 29, the maintenance personnel were dispatched at 13:10 on January 29, and are scheduled to arrive at the building at 13:30 on January 29.

Claims

1. A building equipment information providing system that provides maintenance information of building equipment received from a remote monitoring device that monitors the building equipment. The building equipment information providing system is characterized by comprising: a receiving unit that receives a request for providing maintenance information from a user terminal; Access permission information, which is information used to determine whether to provide maintenance information to the user terminal; and The access permission determination unit determines whether the maintenance information requested by the receiving unit can be provided using the access permission information.

2. The building equipment information providing system according to claim 1, wherein: The maintenance information of building equipment is maintenance information that can be viewed by building managers.

3. The building equipment information providing system according to claim 2, wherein: The building equipment information providing system includes an access authority updating unit that updates the access authority of the maintenance information according to a maintenance status.

4. The building equipment information providing system according to claim 3, wherein: The maintenance information records maintenance information of multiple items. The access permission determination unit determines whether provision is permitted for each item of the maintenance information.

5. The building equipment information providing system according to claim 4, wherein: The access authority information stores a first reading authority determined based on items of maintenance information and a second reading authority received from the administrator terminal. When both the first reading authority and the second reading authority are provided, maintenance information of the corresponding items is provided.

6. The building equipment information providing system according to claim 4, wherein: The maintenance information is updated via any one of a maintenance personnel terminal operated by a maintenance personnel, an operator terminal operated by an operator in a control center, and a remote monitoring device installed in a control center.

7. The building equipment information providing system according to claim 6, wherein: When the maintenance information is updated to information indicating that a response to a request received from a user terminal is completed, the access permission updating unit updates the access permission information to information indicating that access is not permitted.

8. The building equipment information providing system according to claim 6, wherein: When the maintenance information is updated to information indicating that a response to a request received from a user terminal is completed, the access permission updating unit updates the access permission information to information indicating that access is not permitted after a predetermined time has elapsed.

9. The building equipment information providing system according to claim 6, wherein: When information provision is performed a predetermined number of times to the user terminal after the maintenance information is updated to information indicating that a response to a request received from the user terminal is completed, the access permission updating unit updates the access permission information to information indicating that access is not permitted.

10. The building equipment information providing system according to claim 1, wherein: The maintenance information provision request received by the receiving unit includes information for specifying building equipment. The information used to identify the building equipment is an identifier of the building equipment obtained from a two-dimensional barcode output to a liquid crystal panel in the building.

11. A method for providing information on building equipment, providing maintenance information on building equipment, wherein: The receiving unit receives a request for providing maintenance information from a user terminal. The access permission determination unit determines whether the maintenance information requested by the acceptance unit can be provided using access permission information, which is information for determining whether the maintenance information can be provided to the user terminal.

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