WO2024079885A1

WO2024079885A1 - Remote monitoring system for building equipment

Info

Publication number: WO2024079885A1
Application number: PCT/JP2022/038380
Authority: WO
Inventors: 雅文江藤
Original assignee: 三菱電機ビルソリューションズ株式会社
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2024-04-18

Abstract

A remote monitoring system 1 being an example of an embodiment is a system for remotely monitoring building equipment that comprises: a communication module 10; and a communication device 20 that controls the communication module 10 for executing communications. A remote monitoring device 30 constituting the remote monitoring system 1 transmits communication confirmation data to the communication device 20, thereby executing the confirmation of communication with the communication device 20. The communication device 20 restarts the communication module 10 when the communication confirmation data cannot be received.

Description

Remote monitoring system for building facilities

The present invention relates to a remote monitoring system for building facilities, and more specifically, to a remote monitoring system for building facilities that has a communication function with a remote monitoring device.

Elevators and other building facilities are generally maintained and inspected by maintenance companies. Conventionally, elevators and other building facilities may be equipped with communication devices, and remote monitoring systems that use these communication devices to remotely monitor the facilities from a maintenance company's monitoring center or the like are widely known (see, for example, Patent Documents 1 to 3). The elevator monitoring system disclosed in Patent Document 1 is configured to reset the elevator control device after performing a specified confirmation process when a reset command signal is sent from the remote monitoring device in the monitoring center to the elevator side via the communication device.

In recent years, there has been an increase in the use of mobile communications (e.g., LTE: Long Term Evolution) as a means of communication between remote monitoring devices and communication devices installed in building facilities. When using a mobile communications network such as an LTE network, it is not possible to maintain a constant connection due to communication costs. For this reason, communication checks are performed periodically to ensure that communication is possible without problems.

JP 2005-112486 A Japanese Patent Application Laid-Open No. 5-2694 JP 2006-264911 A

If communication cannot be established between the remote monitoring device and the communication device installed in the building facilities during the above connectivity check, maintenance personnel must be dispatched to the site to carry out restoration work. This creates an issue of a heavy workload for maintenance personnel. Another issue is that the remote monitoring function for the building facilities is lost until maintenance personnel are dispatched and perform restoration work.

The object of the present invention is to provide a remote monitoring system that can quickly restore communications without dispatching maintenance personnel to the site when communication between the remote monitoring device and the communication device installed in the building facilities cannot be confirmed.

The remote monitoring system for building facilities according to the present invention is a remote monitoring system for building facilities that includes a communication module and a communication device that controls the communication module to execute communication, and is characterized in that it includes a remote monitoring device that communicates with the communication device via the communication module and remotely monitors the building facilities, the remote monitoring device transmits communication confirmation data to the communication device to execute a communication confirmation with the communication device, and the communication device restarts the communication module if it is unable to receive the communication confirmation data.

In many cases, communication between the remote monitoring device and the communication device installed in the building equipment is restored by restarting the communication module. For this reason, in the building equipment remote monitoring system of the present invention, if communication cannot be confirmed, for example if communication confirmation continues for a certain period of time, the communication device automatically restarts the communication module rather than declaring communication unavailable and dispatching a maintenance worker to the site. This may allow communication to be restored quickly without the need for a maintenance worker, significantly reducing the number of times that a maintenance worker must be dispatched. It can also shorten the recovery time.

In the remote monitoring system for building facilities according to the present invention, it is preferable that the communication device restarts itself if it cannot receive communication confirmation data even after restarting the communication module. Because communication failures can occur due to the communication device, this configuration increases the possibility of restoring communication, making the above-mentioned effects more pronounced. Although it is possible to restart the communication device at the same time as the communication module, because there is a high possibility that communication can be restored by restarting only the communication module, this configuration makes it possible to prevent unnecessary restarts of the communication device.

In the remote monitoring system for building facilities according to the present invention, the remote monitoring device is configured to be able to communicate with the communication device via multiple communication lines including a main line and a sub-line, and may transmit communication confirmation data via the sub-line if communication confirmation via the main line is not possible. With this configuration, if a communication failure occurs due to a problem with the main line, unnecessary recovery work for communication equipment can be prevented.

In the building facility remote monitoring system according to the present invention, the communication device may be configured to restart the communication module if communication confirmation data is not received for a predetermined period of time after the communication confirmation data was last received. In this case, the communication module can be restarted at an appropriate timing, and a communication failure state can be prevented from being left unattended for a long period of time.

In the remote monitoring system for building facilities according to the present invention, the communication device may be configured to be able to output information requesting the remote monitoring device to send communication check data. For example, the communication device may be able to execute communication check with the remote monitoring device at any time. The communication device may be configured to restart the communication module if communication check data cannot be received even after outputting the request.

In the remote monitoring system for building facilities according to the present invention, the building facilities are preferably elevators.

　With the remote monitoring system for building facilities according to the present invention, when communication between the remote monitoring device and the communication device installed in the building facilities cannot be confirmed, communication can be quickly restored without dispatching maintenance personnel to the site. This makes it possible, for example, to reduce the number of times maintenance personnel are dispatched and shorten the recovery time.

1 is a diagram illustrating a remote monitoring system for an elevator according to an embodiment; FIG. 1 is a block diagram showing a configuration of a remote monitoring system. 13 is a flowchart showing an example of a control procedure related to communication confirmation. 13 is a flowchart showing another example of a control procedure related to a communication check.

Below, an embodiment of the building facility remote monitoring system according to the present invention will be described in detail with reference to the drawings. The embodiment described below is merely an example, and the present invention is not limited to the following embodiment. Furthermore, the present invention includes forms that are a selective combination of multiple embodiments and modified examples described below.

Below, the configuration of an elevator remote monitoring system 1, which is one example of an embodiment, will be described in detail with reference to Figures 1 and 2. In this embodiment, an elevator 2 is shown as an example of building equipment, but the building equipment according to the present invention is not limited to elevators. The remote monitoring system according to the present invention can also be applied to, for example, air conditioning equipment or security systems such as intercom equipment. However, the remote monitoring system according to the present invention is particularly effective in remote monitoring of elevators.

As shown in Figures 1 and 2, elevator remote monitoring system 1 is a system for remotely monitoring elevator 2, which includes a communication module 10 and a communication device 20 that controls communication module 10 to execute communication. Remote monitoring system 1 includes remote monitoring device 30 that communicates with communication device 20 via communication module 10 and remotely monitors elevator 2. Remote monitoring device 30 is generally a computer of a maintenance company that performs maintenance and inspection of elevator 2, and is installed in a location away from the facility where elevator 2 is installed, for example, a monitoring center (information center) that remotely monitors elevator 2.

The remote monitoring device 30 generally performs remote monitoring of multiple elevators 2. Multiple elevators 2 installed in multiple facilities are subject to remote monitoring by the remote monitoring device 30. The remote monitoring device 30 may be composed of one computer or multiple computers. In order to perform remote monitoring of multiple elevators 2, the remote monitoring device 30 needs to communicate with each elevator 2, and is configured to periodically transmit communication confirmation data to the communication device 20 of the elevator 2 to confirm the communication status with the communication device 20.

In remote monitoring system 1, the communication device 20 at least restarts the communication module 10 when it is unable to receive communication confirmation data for a specified period of time, as will be described in more detail later. In many cases, restarting the communication module will restore communication between the communication device 20 and the remote monitoring device 30. With remote monitoring system 1, the number of visits by maintenance personnel can be significantly reduced, and recovery time can also be significantly shortened.

The elevator 2 is a lifting facility that transports people, goods, etc. between landings 5 installed on each floor by a car 3 moving within a hoistway 4. The car 3 has, for example, an interior space where people can board, and moves within the hoistway 4 by being driven by a hoist 7 installed in an upper machine room 6. The car 3 is equipped with an in-car operation panel 3A, a car door 3B, and a door opening and closing device (not shown) that opens and closes the car door 3B. In addition, the landing 5 is provided with a landing operation panel 5A and a landing door 5B.

In this embodiment, a control panel 8 that controls the operation of the elevator 2 is installed in the upper machine room 6. The control panel 8 controls the hoist 7 based on operation signals from the car operation panel 3A and the hall operation panel 5A, for example, and moves the car 3 to a specific hall 5 in accordance with the operation of the user. In addition, when the car 3 is stopped at the hall 5, the control panel 8 controls the door opening and closing device to open and close the car door 3B. The hall door 5B opens and closes in conjunction with the car door 3B.

As described above, the elevator 2 is equipped with the communication module 10 and the communication device 20 as communication devices with the remote monitoring device 30. The communication module 10 and the communication device 20, together with the remote monitoring device 30, constitute the remote monitoring system 1. In the example shown in FIG. 1, the communication module 10 and the communication device 20 are installed in the upper machine room 6 together with the control panel 8. The communication device 20 is disposed adjacent to the control panel 8 and is connected to the control panel 8 by wire, but the communication device 20 may also be incorporated into the control panel 8. Similarly, the communication module 10 may also be incorporated into the control panel 8.

The remote monitoring system 1 is configured, for example, by using the functions of the above communication devices to transmit information about a fault that occurs in the elevator 2 to the remote monitoring device 30. The remote monitoring system 1 may also be configured to transmit a signal to the control panel 8 from the remote monitoring device 30 to perform an inspection of the elevator 2, and to automatically perform part of the inspection of the elevator 2. The above communication devices are essential for remote monitoring of the elevator 2 by the remote monitoring system 1, and good communication conditions must be ensured between the communication device 20 and the remote monitoring device 30.

The communication module 10 is, for example, a wireless communication device that performs wireless communication with a wireless base station. There are no particular limitations on the wide-area wireless communication standard used, and any standard such as LTE, 4G, or 5G may be used. In the following, it is assumed that LTE communication is performed between the communication device 20 and the remote monitoring device 30, and the communication module 10 is an LTE communication module. A conventionally known LTE communication module may be used for the communication module 10.

The communication module 10 is restarted by the communication device 20 in the event of a communication failure with the remote monitoring device 30. The communication module 10 has, for example, a power circuit including a relay, and is restarted by turning the relay on/off based on a control signal output from the communication device 20. The communication module 10 may have a power button for turning the power on/off, or it can be restarted manually by a maintenance worker.

The communication device 20 is a communication control device that controls the communication module 10 to perform wireless communication with the remote monitoring device 30. The communication device 20 includes a first processing unit 23 that executes processing related to recovery when a communication failure with the remote monitoring device 30 occurs, for example, and a second processing unit 24 that executes processing related to sending and receiving information for remote monitoring of the elevator 2. The communication device 20 has a memory 21 that stores various setting information, control programs, etc., and a processor 22 that realizes the functions of each processing unit by reading and executing the control program.

The communication device 20 is configured to restart the communication module 10 if a communication failure with the remote monitoring device 30 occurs. The communication device 20, for example, outputs a control signal for restarting to the communication module 10. The communication device 20 is also configured to restart itself if the communication failure is not resolved even after restarting the communication module 10. The communication device 20 has a power circuit including a relay, similar to the communication module 10, and may also have a manually operable power button.

As described above, the remote monitoring device 30 is a device that communicates with the communication device 20 and remotely monitors the elevator 2. The remote monitoring device 30 includes, for example, a first processing unit 33 that executes processing related to confirming communication with the communication device 20, and a second processing unit 34 that executes processing related to the remote monitoring of the elevator 2. The remote monitoring device 30 has a memory 31 that stores various setting information, control programs, etc., and a processor 32 that realizes the functions of each processing unit by reading and executing the control program. The memory 31 also stores the IP address or domain name of the communication device 20 of each elevator 2.

The configuration for checking communication between the communication device 20 and the remote monitoring device 30 is explained in detail below.

The remote monitoring device 30 is configured to transmit communication check data to the communication device 20 and perform a communication check with the communication device 20. In LTE communication, due to communication costs, it is not possible to maintain a communication connection state at all times, so the remote monitoring device 30 has a function to perform a communication check to confirm whether communication with the communication device 20 can be performed without problems. It is preferable that the remote monitoring device 30 periodically performs a communication check for each elevator 2. For example, the remote monitoring device 30 performs a communication check for each elevator 2 every day.

The remote monitoring device 30 performs a communication check, for example, by executing a Ping command. When the Ping command is executed, a packet that is communication check data is generated, and the packet is sent to a communication destination specified by an IP address or the like. If communication is good, there will be the same number of responses as the number of communication check packets sent. At this time, the response time can also be measured. There is no particular limit to the number of communication check packets, but as an example, it is 50 to 150 times per day for one elevator 2.

The remote monitoring device 30 ends the communication check, for example, when a response from the communication device 20 is confirmed. The remote monitoring device 30 may send multiple packets at once for one elevator 2, or may send 50 to 150 packets over several minutes to several hours. The remote monitoring device 30 sends communication check packets to the same communication destination at regular intervals (intervals of several tens of seconds to several minutes), for example. Note that a packet loss rate, which is the ratio of the number of responses to the number of packets sent, may be calculated, and this information may be used to control the communication check.

The remote monitoring device 30 may perform communication checks on the communication devices 20 of multiple elevators 2 in a predetermined order, or may perform communication checks by randomly changing the order each day. The remote monitoring device 30 may also store the packet loss rate data for each elevator 2 in the memory 31 and change the order of communication checks based on the data. The remote monitoring device 30 may perform communication checks in order of communication destinations with the highest packet loss rates in a specified period, for example. In this case, communication checks can be performed preferentially for communication destinations that are prone to communication failures.

The communication device 20 is configured to restart the communication module 10 if it cannot receive communication check data (communication check packets). If the communication device 20 cannot receive the communication check data even though a communication check is being performed by the function of the remote monitoring device 30, it is believed that a communication failure has occurred due to a problem with the communication equipment such as the communication module 10 or the communication device 20, or the communication line. Since communication failures in the remote monitoring system 1 are often resolved by restarting the communication module 10, this function of the communication device 20 makes it possible to quickly restore communications without the need for maintenance personnel to be dispatched to the site.

The communication device 20 may restart the communication module 10 at an appropriate time when communication check data is not received, but preferably the restart is performed taking into consideration the timing when the communication check is performed by the remote monitoring device 30. For example, the communication device 20 restarts the communication module 10 when communication check data is not received by a preset time. One example of such a time is the time when transmission of some or all of the communication check packets scheduled to be sent on that day is completed. When the communication module 10 is restarted at the point when transmission of some of the packets scheduled to be sent on that day is completed, the effect of the restart can be quickly confirmed without special processing such as sending additional packets.

If the time at which the remote monitoring device 30 performs the communication check does not change, the communication device 20 may determine whether to restart the communication module 10 at a fixed time each day. That is, if communication check data is not received by the fixed time each day, the communication device 20 restarts the communication module 10. The time is set, for example, by remote operation by the remote monitoring device 30 or by a maintenance technician. Note that if the time of the communication check changes and the schedule is set in advance, the communication device 20 may obtain the schedule in advance and change the time at which the communication check is to be performed to match the time at which the communication check is performed.

The communication device 20 may restart the communication module 10 if it is unable to receive communication check data for a predetermined period of time after it last received communication check data. For example, the communication device 20 stores in the memory 21 the date and time when communication check data was last received from the remote monitoring device 30 and starts a timer from that date and time. Then, if a predetermined period has passed since that date and time without receiving communication check data, it assumes that a communication failure has occurred and restarts the communication module 10. If the communication device 20 receives communication check data before the predetermined period has passed, it resets the timer and starts counting for the next predetermined period.

The above-mentioned predetermined period is set, for example, by remote operation using the remote monitoring device 30 or by a maintenance technician. If the communication check using the remote monitoring device 30 is performed at the same time every day, the predetermined period is set to 24 hours or more. It is preferable that the predetermined period is set taking into consideration the time it takes for some or all of the packets scheduled for transmission on that day to be transmitted to be completed. If the predetermined period is set so that the communication module 10 is restarted before all packets have been transmitted, the effect of the restart can be quickly confirmed without the need for special processing such as sending additional packets.

If the communication device 20 cannot receive communication confirmation data from the remote monitoring device 30 even after restarting the communication module 10, it is preferable to restart the communication device 20 itself. Because communication failures can occur due to the communication device 20, restarting the communication device 20 increases the possibility of restoring communication. It is also possible to restart the communication device 20 at the same time as the communication module 10, but, for example, the time required to restart the communication device 20 is longer than that of the communication module 10, and in many cases communication can be restored by restarting only the communication module 10. For this reason, it is preferable to perform restarts of the communication devices in stages.

For example, after restarting the communication module 10, the communication device 20 restarts itself if it is unable to receive communication confirmation data for a predetermined period of time after the restart. This allows the communication device 20 to be restarted after the effect of restarting the communication module 10 has been sufficiently confirmed. If the communication failure is not resolved even after restarting the communication device 20, the remote monitoring device 30 may display an alert indicating that communication with the communication device 20 is not possible. The alert is displayed taking into consideration the time when the communication device 20 is restarted and the time to confirm the effect. If there are still communication confirmation packets scheduled to be sent on the day at the time the communication device 20 is restarted, the effect of restarting the communication device 20 can be confirmed on the same day.

In this embodiment, the remote monitoring device 30 is configured to be able to communicate with the communication device 20 via multiple communication lines including a main line X and a sub-line Y. The main line X is a line used during normal times and is used in emergencies such as when a natural disaster such as an earthquake occurs. For this reason, the sub-line Y is not used for communications during normal times. The remote monitoring device 30 may use this sub-line Y to perform a communication check. Specifically, if communication check cannot be performed via the main line X, communication check data is transmitted via the sub-line Y. In this case, when a communication failure occurs due to a problem with the main line X, unnecessary recovery work for communication equipment can be prevented.

For example, if there is no response from the communication device 20 even after a predetermined number of communication confirmation packets are sent via the main line X, the remote monitoring device 30 sends a communication confirmation packet via the sub-line Y. At this time, the number of packets sent via the sub-line Y may be less than the number of packets sent via the main line X. As illustrated in FIG. 1, if there are multiple sub-lines Y, the remote monitoring device 30 may perform the communication confirmation using all of the sub-lines Y, or may select one sub-line Y from the multiple sub-lines to perform the communication confirmation.

When a communication check is performed using the sub-line Y, the above-mentioned predetermined period that is a determining factor for restarting the communication module 10 is set to the period during which the process of transmitting communication check data via the main line X and the sub-line Y is completed. In other words, the communication device 20 executes restart of the communication module 10 when communication check data cannot be received via multiple communication lines including the main line X and the sub-line Y. In addition, the communication device 20 may be restarted when communication check data cannot be received even after restarting the communication module 10.

The communication device 20 may be configured to output information (request information) requesting the remote monitoring device 30 to send communication confirmation data. When the remote monitoring device 30 receives the request information, it transmits the communication confirmation data to the requested communication device 20. Note that if a communication failure occurs, the request information does not reach the remote monitoring device 30, and therefore the communication confirmation data is not transmitted. The communication device 20 may be configured to restart the communication module 10 if it is unable to receive the communication confirmation data even after outputting the request information.

If the communication device 20 cannot receive the communication confirmation data even after restarting the communication module 10, the communication device 20 may output the request information before restarting itself. Alternatively, the communication device 20 may output the request information after restarting itself. For example, the communication device 20 outputs the request information to the remote monitoring device 30 to check the effect of restarting the communication device.

Below, an example of a control procedure for checking communication in the remote monitoring system 1 will be described with reference to the flowchart in Figure 3.

As shown in FIG. 3, the remote monitoring device 30 performs a communication check by sending a communication check packet as communication check data to the communication device 20 of each elevator 2 (steps S10, S11). If there is no problem with the communication state between the communication device 20 and the remote monitoring device 30, a response is received from the communication device 20, and the communication check ends upon receipt of this response (Yes in step S11). On the other hand, if no response is received (No in step S11), packets will continue to be sent until the number of sent packets reaches a predetermined number. One example of the predetermined number is 50 to 150 packets per day per elevator 2, as described above.

If there is no response from the communication device 20 even after the above-mentioned predetermined number of packets have been sent and communication cannot be confirmed, an alert display indicating that communication is not possible is output (step S13). At this time, the recovery process by the communication device 20 has been completed. In other words, since the communication failure has not been resolved even through the recovery process by the communication device 20, in this case, for example, a maintenance worker is dispatched to the site based on the alert display to carry out recovery work.

When the communication device 20 receives a communication confirmation packet from the remote monitoring device 30 (Yes in step S20), it responds to the remote monitoring device 30 (step S26). On the other hand, if a predetermined period of time has passed since the last reception of a communication confirmation packet without receiving the packet (Yes in step S21), it assumes that a communication failure has occurred and automatically executes a communication recovery process. Specifically, it first restarts the communication module 10 (step S22). If the communication failure is resolved by this restart, it becomes possible to receive a communication confirmation packet (Yes in step S23).

If the communication confirmation packet cannot be received even after restarting the communication module 10 (No in step S23), the communication device 20 restarts itself (step S24). If the communication failure is resolved by this restart, the communication confirmation packet will become available to be received (Yes in step S25). Note that the output of the alert display in step S13 above is executed, for example, when confirmation of the effect of restarting the communication device 20 has been completed and the restart has not been effective.

The procedures of steps S23 and S25 are preferably continued for a predetermined period after the restart. In this case, the effect of the restart can be fully confirmed. As described above, by restarting the communication device when transmission of some of the packets scheduled for transmission on that day is completed, the effect of the restart can be quickly confirmed without special processing such as transmitting additional packets. For example, the communication module 10 can be restarted when transmission of about 1/3 of the number of packets scheduled for transmission on that day is completed, and the communication device 20 can be restarted when transmission of about 2/3 of the number of packets is completed.

FIG. 4 is a flowchart showing another example of a control procedure for communication confirmation. In FIG. 4, the same steps as in FIG. 3 are designated by the same reference numerals, and duplicate explanations are omitted. The example shown in FIG. 4 differs from the example shown in FIG. 3 in that if there is no response from communication device 20 even after the above-mentioned predetermined number of packets have been sent and communication confirmation cannot be obtained, a packet is sent on sub-line Y to confirm communication (step S14). It also differs from the example shown in FIG. 3 in that communication device 20 outputs request information for sending additional packets to remote monitoring device 30.

In the example shown in FIG. 4, the remote monitoring device 30 performs a communication check using the sub-line Y (steps S14, S15). The communication checks in steps S10 to S12 are performed using the main line X. In this case, it is possible to determine whether the cause of the communication failure is the main line X or the communication equipment. If a communication check can be performed using the sub-line Y before restarting the communication equipment and communication can be confirmed, unnecessary restarts of the communication equipment can be prevented.

If the communication device 20 is unable to receive a packet even after a predetermined period of time has passed since the previous packet was received, it restarts the communication equipment (at least restarts the communication module 10) (steps S20, S21, S27), and then outputs request information for sending additional packets to the remote monitoring device 30 (step S28). In this case, the effect of the restart can be quickly confirmed even if the number of packets scheduled to be sent on that day is already zero. If the restart is ineffective and the communication failure cannot be resolved, the request information does not reach the remote monitoring device 30, and therefore the communication confirmation packet cannot be received (No in step S29). Note that even if the communication failure has been resolved, there may be cases where packets are not sent due to a malfunction of the remote monitoring device 30.

When the remote monitoring device 30 receives the request information from the communication device 20 (Yes in step S16), it transmits an additional communication confirmation packet to the communication device 20 that is the request destination (step S17). In this case, it is highly likely that communication with the communication device 20 has been restored, and a response is received after the additional packet is transmitted. If the remote monitoring device 30 is unable to confirm communication even using the sub-line Y, and if the request information is not received, it outputs an alert display indicating that communication is not possible (step S13).

As described above, with the remote monitoring system 1 having the above configuration, when communication between the remote monitoring device 30 and the communication device 20 of the elevator 2 cannot be confirmed, communication can be quickly restored without dispatching a maintenance worker to the site. This reduces the number of times that maintenance workers need to be dispatched, and shortens the recovery time.

The inventors' knowledge shows that in many cases, a communication failure can be resolved by restarting the communication module 10. For this reason, when communication cannot be confirmed, rather than immediately dispatching a maintenance technician to the site, the communication device 20 restarts the communication module 10 as a first recovery method.

If the communication failure is not resolved by the above-mentioned first recovery means, the second recovery means is to have the communication device 20 restart itself. This makes it possible to increase the probability of communication recovery while suppressing unnecessary restarts of the communication device 20. Since a breakdown in the elevator 2 has a significant impact on the lives of users, quickly resolving the communication failure and ensuring good communication with the remote monitoring device 30 is important in improving the quality of maintenance services.

REFERENCE SIGNS LIST 1 Remote monitoring system, 2 Elevator, 3 Cage, 3A In-cage operation panel, 3B Cage door, 4 Hoistway, 5 Landing, 5A Landing operation panel, 5B Landing door, 6 Upper machine room, 7 Hoist, 8 Control panel, 10 Communication module, 20 Communication device, 21, 31 Memory, 22, 32 Processor, 23, 33 First processing unit, 24, 34 Second processing unit, 30 Remote monitoring device, X Main line, Y Sub-line

Claims

A remote monitoring system for a building facility comprising a communication module and a communication device that controls the communication module to perform communication,
a remote monitoring device that communicates with the communication device via the communication module and remotely monitors the building facilities;
the remote monitoring device transmits communication confirmation data to the communication device to perform communication confirmation with the communication device;
A remote monitoring system for building facilities, wherein the communication device restarts the communication module if the communication confirmation data cannot be received.
The remote monitoring system for building facilities according to claim 1, wherein the communication device restarts itself if the communication confirmation data cannot be received even after the communication module is restarted.
The remote monitoring device is configured to be able to communicate with the communication device via multiple communication lines including a main line and a sub-line, and transmits the communication confirmation data via the sub-line when the communication confirmation via the main line is not possible. The remote monitoring system for building facilities described in claim 1 or 2.
The remote monitoring system for building facilities according to any one of claims 1 to 3, wherein the communication device restarts the communication module if the communication confirmation data cannot be received for a predetermined period of time after the communication confirmation data was last received.
The remote monitoring system for building facilities described in any one of claims 1 to 4, wherein the communication device is configured to be capable of outputting information requesting the remote monitoring device to transmit the communication confirmation data.
The remote monitoring system for a building facility according to any one of claims 1 to 5, wherein the building facility is an elevator.