JPH08119554A - Remote monitoring terminal of elevator, remote monitoring center device and remote monitoring system constituted of them - Google Patents

Abstract

PURPOSE: To highly efficiently transmit information as the whole of a system even against simultaneous dispatch of information from a large number of remote monitoring terminals. CONSTITUTION: In the case of coincidentally dispatching abnormality information from a large number of remote monitoring terminals 20 to a remote monitoring center device 50, a series of procedures of automatic dialing, circuit establishment, information transmission and circuit disconnection is not carried out for each of the remote monitoring terminals to which a circuit is connected from the start, but circuit connection treatment is carried out by receiving automatic dialing from a plural number of the remote monitoring terminals 20 until all of a plural number of telephone circuits 30a-30d are occupied. Thereafter, by taking a procedure to sequentially carry out information transmission treatment in the remote monitoring terminals in the middle of circuit connection, the information transmission treatment of state information of an elevator is speed up as the whole of a system.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring terminal device for an elevator, a remote monitoring center device, and a remote monitoring system including them.

[0002]

2. Description of the Related Art In recent years, the use of elevators has become active due to the increase in the number of buildings and installation in private houses, but maintenance and inspection work is indispensable for ensuring safety. For this reason, a system in which a maintenance staff of an elevator maintenance company regularly visits the site to perform maintenance inspection work is adopted.

However, since the number of elevators installed is rapidly increasing, demands for labor saving and efficiency improvement of maintenance and inspection work are increasing, and recently, many elevators scattered in various places are automatically operated by an elevator maintenance company. As a result, a remote monitoring system for elevators that performs centralized monitoring has been introduced.

This elevator remote monitoring system connects a remote monitoring terminal device of a large number of elevator systems scattered in a remote place with a remote monitoring center device installed in an elevator maintenance company by a telephone line, and has the following functions. Has been realized.

(1) Information reporting function at the time of failure This is a function for the remote monitoring terminal device to auto-dial to the remote monitoring center device to report abnormal information when an abnormality occurs in any of the elevator systems. is there. On the remote monitoring center device side, the location and abnormal condition of the elevator system are confirmed from the abnormal information received by the maintenance personnel,
Determine the need for maintenance, tools and parts required for maintenance, and go to the maintenance of the elevator system where the abnormality occurred.

(2) Maintenance information reporting function This is to collect basic operation information such as the total number of elevator operations and the number of door operations at the remote monitoring terminal device side of the elevator system, and periodically send it to the remote monitoring center device. It is a function to report. The remote monitoring center device accumulates this periodic operation information and uses it for checking the usage status and estimating the replacement time of consumables. Note that the operation basic information accumulated in the remote monitoring terminal device is generally a system in which a large number of elevator terminal devices are sequentially called out from the remote monitoring center device side and taken out.

(3) Periodic reporting function This is a function for periodically reporting as evidence that the elevator terminal device is functioning normally. This is used together with the maintenance information reporting function of (2).

(4) Intercom function This is a function of directly talking between the passengers trapped in the elevator car and the supervisor of the elevator maintenance company when the elevator fails, and the intercom installed in the elevator car is taken up. By doing so, it is possible to connect to the remote monitoring center device through a telephone line and make a call.

A conventional remote monitoring system for such an elevator has a system configuration as shown in FIG. That is, the elevator control device 1 and the remote monitoring terminal device 2 are provided in the elevator machine room of each elevator system scattered in a remote place, and the elevator control device 1 is always provided.
Accumulates elevator monitoring information received from, and keeps track of elevator status. Then, when a report condition is satisfied such as the occurrence of a failure or the input of recovery information or a periodic report time, this terminal device 2 uses the auto dial function to the remote monitoring center device 5 via the telephone line 3. It is supposed to be reported.

The remote monitoring center device 5 installed in the elevator maintenance company 4 uses the telephone line 3 by the line connecting unit 6 for controlling connection / disconnection of the remote monitoring terminal device 2 and the telephone line 3 of each of a number of remote elevator systems. Connected to the remote monitoring terminal device 2 for accumulating information to be notified, and when abnormal information is received, an alarm is issued to alert the occurrence of an abnormality.
It also has a function of displaying abnormality information on the monitor screen and further notifying it to a printer by printing it on a printer.

In such a conventional elevator remote monitoring system, as shown in the flowchart of the remote monitoring terminal device 2 side of FIG. 9 and the flowchart of the remote monitoring center device 5 side of FIG. Each remote monitoring terminal device 2 inputs the monitoring information 7 from the elevator control device 1 to constantly grasp the status of the elevator system, and issues an alarm at the time of inputting the failure information and its return information, or at a periodic alarm time. If the condition is met, the mode is switched to the telephone line interface (I / F) mode, and the telephone number of the remote monitoring center device 5 of the elevator maintenance company 4 is automatically dialed to the public telephone line 3 (steps S1 to S4: Step S21).

When the telephone line 3 is idle at the time of this auto-dial, the telephone line connection unit 6 detects a call from the outside and outputs the incoming call detection signal 8 to the remote monitoring center device 5.
Output to. Therefore, the remote monitoring center device 5 detects the incoming call detection signal 8, investigates its own state, and outputs a telephone line connection command 9 if the information reception is possible, and the telephone line connection unit 6 outputs this command 9. Then, the line connection is performed (step S5: steps S22 to S24). After that, information transmission is executed directly from the remote monitoring terminal device 2 to the remote monitoring center device 5 via the telephone line 3 (step S6: S).
25). For this information transmission, the simplest basic procedure is generally applied to carry out one-to-one communication, and a transmission rate of about 1200 bps is used. The telephone line 3 is not limited to a physical layer dedicated to information transmission, such as an optical fiber or a coaxial cable, and its accuracy cannot be compensated, so that it does not unnecessarily speed up or take an excessively complicated control procedure.

When the information transmission is completed (step S7: step S26), the remote monitoring center device 5 turns off the telephone line connection command 9, and the telephone line connection unit 6 receives this and releases the connection of the telephone line 3. At the same time, the remote monitoring terminal device 2 also disconnects from the telephone line 3, and one data notification process is completed (step S8: step S27). Then, the remote monitoring center device 5 analyzes the received data (step S28). If the information transmission is not normally completed (step S7: step S26), the telephone line connection is temporarily released (step S9: step S29), and the remote monitoring terminal device 3 side disconnects the telephone line connection from step S3. Will try again.

By the way, since the remote monitoring center device 5 of the elevator maintenance company 4 simultaneously monitors each of a large number of elevator systems scattered in a remote place, the data reporting process from the remote monitoring terminal device 2 is performed. It can happen at the same time. In such a case, one-time automatic dialing may not connect to the remote monitoring center device 5. Therefore, if the line is not established in step S5, it is judged from the dial tone whether or not the remote monitoring center device 5 is in a call (step S10). If the call is in progress, the telephone line interface mode is temporarily stopped, and the step S3 is performed. The telephone line connection from is retried (step S11).

Even if the remote monitoring center device 5 is not in a call, for example, if the communication signal level is too low, crosstalk,
The line may not be established due to other reasons (steps S5 and S10). In such a case,
For example, waiting for the passage of one minute (step S12),
If the line is not established, the telephone line interface mode is stopped and the telephone line connection from step S3 is retried (step S13).

[0016]

However, such a conventional elevator remote monitoring system has the following problems. That is, with the rapid increase in the number of installed elevator systems, the number of installed remote monitoring terminal devices also rapidly increases, and as a result, the number of remote monitoring center devices increases.
The number of remote monitoring terminal devices managed per unit is also increasing, and as a result, the probability of simultaneous occurrence of data reporting processing by a plurality of remote monitoring terminal devices also tends to increase. This also leads to an increase in the number of retries when each remote monitoring terminal device issues data notification processing to the remote monitoring center device, and the promptness of notification to the elevator maintenance company when an elevator failure occurs tends to be impaired. . In particular, when a disaster such as an earthquake occurs, it is assumed that a large number of remote monitoring terminal devices in the surrounding area connected to one remote monitoring center device will issue alerts simultaneously. A series of procedures for line establishment, information transmission, and line disconnection for the monitoring terminal device are only handled one by one, and it takes a long time to complete the processing of the last terminal device. The speed is impaired.

In addition, when a situation occurs in which the same remote monitoring terminal device repeatedly accesses the remote monitoring center device due to a defect such as information transmission between any one of the remote monitoring terminal devices and the remote monitoring center device. However, the remote monitoring terminal will monopolize the telephone line,
There is a problem that it becomes more difficult to access the same remote monitoring center device from the remote monitoring terminal device of another elevator system.

In order to solve such a problem, recently, as shown by an imaginary line (one-dot chain line) in FIG. 8, a spare remote monitoring center device 5'and a line connecting portion 6 are provided to the elevator maintenance company 4. ′ Are installed side by side, on the other hand, each remote monitoring terminal device 2
The problem is solved by adding a function of calling the spare remote monitoring center 5'and transmitting information only when the number of retries exceeds a certain amount.

However, if a remote monitoring center 5'of a different system is installed, the elevator maintenance company 4 requires a plurality of remote monitoring center devices 5 and a plurality of line connecting portions 6, which is expensive in terms of cost. Since it is not the remote monitoring center device 5 used at times, there is no accumulation of data such as past failure cases from each remote monitoring terminal device 2,
There was a problem that analysis of abnormality took time.

By the way, in the above-described conventional remote monitoring system for elevators, a large-capacity processing unit using a high-speed arithmetic processor of 32 bit class or more is generally used in a remote monitoring center device of an elevator maintenance company. Normally, a series of procedures for establishing a line, transferring data, and disconnecting a line between the remote monitoring center device and the remote monitoring terminal device take about 20 to 30 seconds even if no problem occurs in information transmission. Although it is due to the limitation of the information transmission speed as described above, actually, most of the time required for the interface processing other than the information transmission such as the connection to the telephone line and the disconnection from the telephone line is taken. It is as short as a second. Therefore, due to the fact that information is transmitted using a general public line, even if a high-speed processor is used, these processes cannot be speeded up due to the restrictions of the hardware of the transmission system.

Moreover, in the conventional remote monitoring center device, the current functions and processing methods are low in load and wasteful. Therefore, even if notifications are simultaneously received from a large number of remote monitoring terminal devices, the substantial information transmission is completed in 3 to 4 seconds. Even if notifications are simultaneously received from the remote monitoring terminal devices, the subsequent remote monitoring terminal devices are also connected to the line while one or more remote monitoring terminal devices in the future are sequentially transmitting information. Remote monitoring of elevators by establishing a connection, waiting, and starting transmission of information without waiting for the completion of information transmission of the preceding one or more remote monitoring terminal devices. The information transmission speed of the system can be increased as a whole.

The present invention has been invented based on such a consideration, and it is possible to efficiently perform information transmission as a whole system and improve promptness of notification to an elevator maintenance company when an elevator failure occurs. It is an object of the present invention to provide a remote monitoring terminal device for an elevator, a remote monitoring center device, and a remote monitoring system configured by them.

[0023]

According to another aspect of the present invention, there is provided a remote monitoring terminal device for monitoring the operating state of an elevator system, and a remote monitoring center when the elevator monitoring unit detects an abnormal operation. The auto-dial function unit that auto-diales one of the telephone numbers of each of the multiple telephone lines that are pulled into the equipment and reports the abnormal information, and the telephone line of the telephone number auto-dialed by the auto-dial function unit is connected. At this time, a number switching processing unit for switching to another telephone number drawn into the remote monitoring center and automatically dialing it is provided.

According to another aspect of the present invention, there is provided a remote monitoring center device, wherein when a call is received on any of a plurality of telephone lines, the telephone line is connected, and a line connection unit is held until a disconnection signal is received. The reception line switching processing unit is provided for sequentially switching the connection lines and receiving the abnormality information from the remote remote monitoring terminal device which is notified through each telephone line connected to the line connection unit.

An elevator remote monitoring system according to a third aspect of the present invention comprises the remote monitoring terminal device according to the first aspect and the remote monitoring center device according to the second aspect.

[0026]

In the remote monitoring terminal device according to the first aspect of the invention, the elevator monitoring unit monitors the operating state of the elevator system, and when the elevator monitoring unit detects the occurrence of abnormal operation, the automatic dial function unit is activated by the remote monitoring center. Auto-dial any of the telephone numbers of the multiple telephone lines that have been pulled in to report the error information. And
When the telephone line of the telephone number auto-dialed by this auto-dial function unit is connected, the number switching processing unit switches to the telephone number of another telephone line that is pulled in by the remote monitoring center device and becomes the auto-dial function unit. Auto dial.

As a result, when the remote monitoring center device is automatically dialed because an abnormality has occurred in its own elevator system, it is possible to switch to another telephone line even if one telephone line is already connected. , The auto-dial function can increase the probability of connecting the telephone line to the remote monitoring center.

In the remote monitoring center apparatus according to the second aspect of the present invention, when the line connection unit receives an incoming call on any of a plurality of telephone lines, the telephone line is connected and held until a disconnection signal is received, The reception line switching processing unit sequentially switches the connection line and receives the abnormality information from the remote monitoring terminal device, which is issued through each telephone line connected to the line connection unit.

As a result, a series of procedures of auto dialing, line establishment, information transmission, and line disconnection are not performed from the beginning for each remote monitoring terminal device connected to the line, but a plurality of lines are used until all the telephone lines are occupied. The remote dialing terminal device receives the auto dial from the remote dialing terminal device, performs the line connection process, and takes the procedure to execute the information transmission sequentially among the remote dialing terminal devices that are connected to the line. Quickly perform the information reception process when a report is issued.

In the remote monitoring system for an elevator according to the third aspect of the invention, the remote monitoring terminal device according to the first aspect and the remote monitoring center device according to the second aspect constitute the remote monitoring terminal device, so that a large number of remote monitoring terminal devices can be simultaneously generated. When reporting abnormal information to the remote monitoring center device, a series of procedures such as auto dialing, line establishment, information transmission, and line disconnection are not performed from the beginning for each remote monitoring terminal device connected to the line, but multiple Until all the telephone lines are closed, the procedure to accept the auto-dial from multiple remote monitoring terminal devices and perform the line connection processing, and to execute the information transmission processing sequentially in the remote monitoring terminal devices that are connected to the line Due to
To speed up the information transmission process of elevator status information as a whole system.

[0031]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a block diagram of an elevator remote monitoring system according to a third aspect of the present invention, which includes a remote monitoring terminal device according to the first aspect of the invention and a remote monitoring center device according to the second aspect of the invention. 1 shows a system configuration of an embodiment.
2 shows the configuration of the remote monitoring terminal device of the above embodiment, and FIG. 3 shows the configuration of the remote monitoring center device of the above embodiment.

First, the overall configuration of the elevator remote monitoring system will be described with reference to FIG. The elevator remote monitoring system of this embodiment controls the operation of the elevator system, monitors the operating state, and outputs door opening / closing information, call occurrence information, abnormality information when an abnormality occurs, and the like. And when the elevator monitoring information received from the elevator control device 1 is always accumulated and the elevator state is grasped, and abnormal conditions occur, or when alarm conditions are satisfied, such as at the time of input of recovery information or at a periodic alarm time. A remote monitoring terminal device 20 for issuing an alarm to the remote monitoring center device 50 via the telephone line 3 by the auto-dial function is provided in each machine room of elevator systems scattered in various places.

The remote monitoring system of the elevator is also installed in the elevator maintenance company 4, and is controlled by the remote monitoring center device 50 and the remote monitoring center device 50, and a plurality of telephone lines 30a, 30b, 30c, 30 are provided.
d Line connection units 60a, 6 for connecting / disconnecting to / from each
0b, 60c, 60d are provided. In addition, in this embodiment, four telephone lines 30a to 30d are drawn into the elevator maintenance company 4, but the number of these telephone lines is not particularly limited and can be increased or decreased as necessary.

Next, the configuration of the remote monitoring terminal device 20 will be described. This remote monitoring terminal device 20 stores the telephone numbers of the respective telephone lines drawn into the elevator maintenance company 4 in order with respect to the conventional remote monitoring terminal device 2 shown in FIG. A telephone number buffer 21 is newly provided for controlling and switching the telephone number to be automatically dialed when necessary.

The detailed internal structure of the remote monitoring terminal device 20 and the telephone number buffer 21 will be described with reference to FIG.
The elevator operation state information storage unit 22 that sequentially receives and stores the elevator operation state information such as the door opening / closing information, the call generation information, and the abnormal failure information of the elevator system.
Then, when an abnormality in the elevator system is detected, the telephone numbers given from the telephone number buffer 21 are automatically dialed sequentially when the elevator is operating normally, and the elevator operations stored in the elevator operation state information storage unit 22 are automatically dialed. An auto-dial function unit 23 that outputs status information and a modem 24 that connects to the telephone line 3 are provided. In addition, the telephone number buffer 21 has four telephone lines 30a drawn into the elevator maintenance company 4.
~ 30d Monitor the connection status of the telephone line 3 and the telephone number registration unit 25 in which the telephone numbers of each are registered in order,
There is provided a telephone number switching processing unit 26 which gives a telephone number switching command to the telephone number registration unit 25 when the telephone is connected or when the line is not established for a certain period of time.

On the other hand, in the remote monitoring center device 50 provided in the elevator maintenance company 4, as shown in FIG. 3, line connection control for controlling connection / disconnection of each of the four telephone lines 30a to 30d. A unit 51, a reception information storage unit 52 that stores information sent from the connected remote monitoring terminal device 20, and a data analysis unit 53 that analyzes data are provided.

Next, the operation of the elevator remote monitoring system configured as described above will be described with reference to the flow charts of FIGS. The elevator remote monitoring system of this embodiment is characterized in that the remote monitoring center device 50 performs the control of connection and disconnection with the telephone line by a timer interrupt process separately from the normal communication sequence. .

When a certain elevator system fails, the elevator control device 1 detects an elevator abnormality and outputs the information 7 to the remote monitoring terminal device 20, and the elevator operating state information storage unit 22 of the remote monitoring terminal device 20 outputs the information 7. Save the abnormal operation information once. Then, the auto-dial function unit 23 confirms that the alarm condition of the own device 20 is satisfied and shifts to the telephone line interface mode (step S8).
1 to S84).

Of the telephone numbers registered in the telephone number registration section 25, the automatic dial function section 23 calls the first set telephone number and performs the automatic dialing of that telephone number (step S85).

The remote monitoring center device 50 of the elevator maintenance company 4 receives this calling signal and sends it to the first line 3
When the call arrives at 0a (steps S51 and S55), if the first line 30a can be connected, the telephone line connection command 7a is given to the line connection unit 60a to shift the first line 30a to the interface mode (step S58).

Thus, if a line is established with the elevator maintenance company 4 through the first line 30a by the first auto dial (step S86), the telephone number of the established line is set in the node 1 (step S87). On the other hand, since the established line is the first line (telephone line 30a), the remote monitoring center device 50 requests the information transmission by designating the node 1 by the signal of ENQ1 (step S71,
S72). On the other hand, since the node requested to transmit information is "1", the remote monitoring terminal device 20 matches the node of its own device and starts transmitting information (step S88:
Step S73).

If the information transmission is completed normally (step S
89: Step S74), the remote monitoring terminal device 20 disconnects the telephone line (Step S90). On the other hand, on the remote monitoring center device 50 side, a communication completion flag for the first line is set to search for other lines that are currently connected (steps S75, S76, S78, S79). Since it is assumed that an automatic alarm is issued because an abnormality has occurred in the elevator system, there is no connection of other lines, the received abnormal operation state information is analyzed, and an abnormality occurrence alarm is displayed on the CRT. In addition, the information is output to a printer to notify the surveillance staff (step S8).
0).

When the information transmission is not normally completed on the remote monitoring terminal device 20 side (step S89), the telephone number switching processing unit 26 causes the telephone number registration unit 25 to register the next telephone number in the next order. Is called, the auto dialing of this telephone number is executed by the auto dialing function unit 23, and the above series of transmission processing is retried (steps S91, S92).

If the line is not established even after executing the auto-dial in step S85 because the first telephone line 30a on the remote monitoring center device 50 side is busy (steps S86, S93), or the line is not established. Even if the ringing tone is bad for a certain period of time, for example, it continues ringing for 1 minute and the connection is not established (steps S86, S93, S9).
6), the interface mode of the telephone line is stopped, the telephone number switching processing unit 26 calls the next telephone number registered in the telephone number registration unit 25, and the automatic dialing of this telephone number is performed by the automatic dial function unit 23. Then, the above series of transmission processing is retried (steps S94, S95; S97, S98).

Next, a description will be given of how the transmission process is performed when an abnormality occurs in each of a plurality of elevator systems almost at the same time and the notification process is started. On the side of the remote monitoring terminal device 20, the auto-dial function unit 23 calls the first (n = 1) telephone number registered in the telephone number registration unit 25 and auto-dial when an abnormality occurs (steps S81 to S85). .

If the remote monitoring center device 50 is connected by the first line 30a by the auto dialing from the remote monitoring terminal device 20 of any elevator system (herein referred to as A), the auto dialing is slightly delayed from this. In the elevator system (herein referred to as B), since the first line 30a is connected to the elevator system A, the same first line 30a is not connected to the remote monitoring center device 50 (steps S81 to S8).
6, S93). Therefore, the telephone line interface mode based on the telephone number of the first line 30a is stopped, the telephone number is switched to the second (n = 2) telephone number, and auto dialing is performed (steps S94 and S95).

If the second line 30b is vacant,
The elevator system B is connected to the remote monitoring center device 50 by the second line 30b. At this time, the remote monitoring terminal device 20 of the elevator system B is set in the node 2 and is in a state of responding to the EQN2. The node of the elevator system A previously connected by the first line 30a is set to 1 and is in a state of responding to the EQN1.

If the line cannot be established on the second line 30b, the third and fourth lines 30c and 30d are sequentially shifted and auto dialed. Any of the registered telephone numbers can be auto dialed. If the line is not connected, the line is returned to the first line 30a again and the automatic dialing is repeated.

On the other hand, on the side of the remote monitoring center device 50 of the elevator maintenance company 4, when the remote monitoring terminal devices 20 respond to a call from a plurality of remote monitoring terminal devices 20 by the periodic interrupt processing by the timer of FIG. It arbitrates the order of information transmission and accepts information transmission sequentially. That is, when the elevator system A first dials automatically on the first line 30a, the first line is not being processed yet.
If NO in step S51, the incoming signal 8a of the first line is detected and line connection is possible, the connection instruction 7a of the first line 30a is instructed to the line connection unit 60a of the first line, The line connection unit 60a is set to the telephone line interface mode so that information can be received from the elevator system A (steps S55 to S58).

Even if the first line is connected and information transmission is being executed (steps S51 and S52), the second line 3
The incoming state of 0b is confirmed, and if there is an incoming call, line connection is performed in the same manner (step S59). Below, the third line 3
0c and the fourth line 30d are the same (steps S60 and S61). Therefore, even if the first line 30a is connected to the elevator system A, the second line 30b can be connected to the elevator system B.

Even if the first line 30a is being processed at the beginning of the timer interrupt process, if the information transmission completion flag is set (steps S51 and S52), the first line 30a will be processed.
The connection is released (steps S53 and S54). This process is the same for the second line to the fourth line.

Next, the procedure of information transmission in the state where the elevator system A is connected by the first line 30a and the elevator system B is connected by the second line 30b will be described with reference to the flowchart of FIG. When connected to the elevator system A, the line connection control unit 51 gives priority to the earliest connection line and EQ for instructing an output request to the terminal device of the elevator system A connected to the first line 30a.
The signal of N1 is output, and since the remote monitoring terminal device 20 of the system A of the elevator systems A and B has the node of its own device being 1, the information transmission is started in response to the EQN1 signal ( Steps S71, S72, S
73). Then, if the information transmission is normally completed, the first line transmission completion flag is output (steps S74, S7).
5).

Next, in step S76, it is determined whether or not there is a terminal device connected to the second line 30b. In this case, since the elevator system B is connected, the process branches to step S77. S72-
By the same process as S75, the information transmission of the elevator system B is executed via the second line 30b.

Thereafter, similarly, if there is a terminal device connected to the third line 30c and the fourth line 30d, information transmission will be sequentially executed (steps S78 and S79).

The above series of information transmission processing will be described below with reference to the flowchart of FIG. If there is an alarm from terminal device A via line 1 at timing t1 and terminal devices B and C also report via the same line 1 with a slight delay, the earliest terminal device A is connected via line 1. , The terminal devices B and C are not connected.

Then, the terminal device B makes the line number 2 again by the auto-dial function and issues an alarm again (timing t4), but in this case, there is no other terminal device connected to the line 2 and the connection is successful. (Timing t6).
However, the terminal device C, which accessed the line 2 at a timing t5 with a slight delay, fails to connect because the terminal device B is ahead of the other.

Therefore, the terminal device C further automatically dials the telephone number of the next line 3 (timing t8), and since there is no connection with another terminal device, the connection on the line 3 must be successful. (Timing t9).

Prior to the connection of the terminal device B on the line 2, the remote monitoring center device 50 is operated at a timing t4 (here, the notification timing of the terminal device B overlaps, but there is no particular reason). The transmission request EQN1 designating the node 1 is output from the terminal device A, and by identifying this, the terminal device A starts information transmission (timing t).
7). When this information transmission is completed normally, the ACK1 signal is output from the center device 50 to notify the terminal device A that the information transmission has been completed normally, and the terminal device A completes the transmission (timing t8, t10). .

During the information transmission by the terminal device A, the terminal device B already connected to the center device 50 through the line 2 stands by in the connected state, and after the center device 20T completes the information transmission with the terminal device A. The connection of the line 1 is released (timing t11), and then the EQN2 signal designating the node 2 and requesting the information transmission is output through the line 2 (timing t12). In response to this, the terminal device B starts information transmission (timing t13).

When the information transmission of the terminal device B is completed and the line 2 is disconnected (timing t16), the information transmission request EQN3 is sent to the terminal device C which has been waiting in the connected state on the line 3 until then. Is issued (timing t17), and the terminal device C starts information transmission (timing t18).

If the terminal device D issues an alarm through the line 1 at the timing t19 between the information transmissions of the terminal device C, the information transmission of the terminal device A has already been completed and the line 1 is in an idle state. Therefore, the connection between the terminal device D and the center device 50 by the line 1 is successful (timing t20).

Therefore, after the information transmission of the terminal device C is completed (timing t21), the information transmission request EQN1 designating the node 1 from the center device 20 is received (timing t22) and the information transmission is executed (timing t2).
3).

In this way, in the elevator remote monitoring system of this embodiment, a plurality of elevator systems A, B, C, ... In this case, on the terminal device 20 side, if a certain line is connected, it is possible to switch to another line and try dialing again by auto dialing, and the maximum number of telephone lines pulled in by the remote monitoring center device 50. The same number of elevator systems will be connected at the same time. Then, in the remote monitoring center device 50, the remote monitoring terminal devices connected to each of the plurality of lines are made to wait until their turn of information transmission comes in the connected state, and information transmission from other terminal devices is completed. Then, information transmission is sequentially permitted from a plurality of terminal devices that are simultaneously connected.

In this way, in the monitoring system for monitoring a large number of elevator systems by the remote monitoring center device 50,
Even if multiple elevator systems issue alerts almost at the same time, dialing, line connection, information transmission, line disconnection, and other non-information transmission procedures can be performed for each remote monitoring terminal device. It is not necessary to perform all the procedures including the one-by-one procedure.Dialing and line connection procedures are executed and waiting while information is being transmitted to and from other remote monitoring terminal devices, and it is your turn. Therefore, it is necessary to immediately execute only the information transmission and the line disconnection procedure, and the system as a whole can efficiently and quickly receive and process the information transmission from a large number of remote monitoring terminal devices.

[0065]

As described above, according to the remote monitoring terminal device of the first aspect of the invention, the elevator monitoring unit monitors the operating state of the elevator system, and when the elevator monitoring unit detects the occurrence of abnormal operation, the automatic monitoring is performed. When the dial function unit auto-diales one of the telephone numbers of the multiple telephone lines pulled into the remote monitoring center to report the abnormal information, and the telephone line of this auto-dial telephone number is connected, Since the number switching processing unit switches to another telephone number that is pulled in by the remote monitoring center device and automatically dials the auto dial function unit, the remote monitoring center device is automatically dialed because an abnormality has occurred in its own elevator. When dialing, switch to another phone line and auto dial even if one phone line is connected. It can be, it is possible to increase the probability of the connection of the telephone line of the remote monitoring center by the auto-dial feature.

According to the remote monitoring center apparatus of the second aspect of the invention, when the line connection unit receives an incoming call on any of a plurality of telephone lines, the telephone line is connected and held until a disconnection signal is received. Every time, the receiving line switching processing unit sequentially receives the abnormal information from the remote monitoring terminal device, which is notified through each telephone line to which the line connecting unit is connected, by switching the connecting line and receiving it.
Rather than having to perform the series of procedures for line establishment, information transmission, and line disconnection from the beginning for each remote monitoring terminal device connected to the line, auto dial from multiple remote monitoring terminal devices until all telephone lines are occupied Is received, the line connection processing is performed, and the procedure is performed to sequentially execute information transmission in the remote monitoring terminal devices that are connected to the line, and information is received when multiple remote monitoring terminal devices are simultaneously notified. Processing can be done quickly.

According to the elevator remote monitoring system of the third aspect of the invention, since the remote monitoring terminal device of the first aspect and the remote monitoring center device of the second aspect are configured, a large number of remote monitoring terminal devices are used. When abnormal information is reported to the remote monitoring center device at the same time, it may be necessary to perform a series of procedures for auto dialing, line establishment, information transmission, and line disconnection from the beginning for each remote monitoring terminal device connected to the line. The procedure for accepting auto-dial from multiple remote monitoring terminal devices and performing line connection processing until all of the multiple telephone lines are occupied, and for sequentially executing information transmission processing in the remote monitoring terminal devices that are connected to the line. By taking
The information transmission processing of the elevator status information can be speeded up for the entire system.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of an embodiment of the invention of claim 3;

FIG. 2 is a functional block diagram of an embodiment of the invention of claim 1;

FIG. 3 is a functional block diagram of an embodiment of the invention of claim 2;

FIG. 4 is a flowchart of a timer interrupt process of the remote monitoring center device in the above embodiment.

FIG. 5 is a flowchart of information reception processing of the remote monitoring center device in the above embodiment.

FIG. 6 is a flowchart of information transmission processing of the remote monitoring terminal device in the above embodiment.

FIG. 7 is a flowchart of information transmission processing between the remote monitoring terminal device and the remote monitoring center device of the above embodiment.

FIG. 8 is a system configuration diagram of a conventional example.

FIG. 9 is a flowchart of information transmission processing of a conventional remote monitoring terminal device.

FIG. 10 is a flowchart of information reception processing of a conventional remote monitoring center device.

[Explanation of symbols]

 1 Elevator control device 3 Telephone line 4 Elevator maintenance company 7 Status signal 8a-8d Incoming signal 9a-9d Line connection signal 20 Remote monitoring terminal device 21 Telephone number buffer 22 Elevator operation state information storage unit 23 Auto dial function unit 24 Modem 25 Telephone Number registration unit 26 Telephone number switching processing unit 30a to 30d Telephone line 51 Line connection control unit 52 Received information storage unit 53 Data analysis unit 60a to 60d Line connection unit

Claims (3)

[Claims] 1. An elevator monitoring unit for monitoring an operating state of an elevator system, and a telephone number of each of a plurality of telephone lines pulled into a remote monitoring center when the elevator monitoring unit detects the occurrence of an abnormal operation. The auto-dial function unit that auto-dials or reports the abnormal information and the telephone line of the telephone number auto-dialed by the auto-dial function unit are connected to the remote monitoring center device while being connected. A remote monitoring terminal device comprising a number switching processing unit for switching to a telephone number and automatically dialing. 2. A telephone line connected to said telephone line connecting unit, which is connected to the telephone line when an incoming call is received on any of a plurality of telephone lines and is held until a disconnection signal is received. A remote monitoring center device comprising: a receiving line switching processing unit for sequentially switching the connection lines and receiving the abnormality information from the remote monitoring terminal device, which is reported through each line. 3. The remote monitoring terminal device according to claim 1 and claim 2.
Elevator remote monitoring system consisting of a remote monitoring center device.