JPH07240803A - Remote supervisory system for elevator - Google Patents

Abstract

PURPOSE:To reduce the opportunity of useless dispatching of a maintenance personnel to a site by providing an output of information representing occurrence of an abnormality when a normal operation signal is not sent again from a corresponding terminal equipment even on the occurrence of a re-confirmation request. CONSTITUTION:When a notifying confirming equipment 6 discriminates non-reception of an identification data signal from any terminal equipment 2, the equipment 6 gives a reconfirmation notifying command to a reconfirmation notification equipment 7. When a general communication line is connected to the corresponding terminal equipment 2, the reconfirmation notification equipment 7 sends the reconfirmation notifying command to the terminal equipment 2. A confirmation notification equipment 9 of the terminal equipment 2 sends again an identification data signal of the terminal equipment 2 to a supervisory equipment 1. When the communication line is not connected for a prescribed time or over or the identification data signal is not sent again from the corresponding terminal equipment 2 in a prescribed time or over elapsed after the transmission of the reconfirmation notifying request signal, an error output device 8 generates an alarm and displays abnormality occurrence information specifying the corresponding terminal equipment 2 and allows a printer to print out the abnormality occurrence information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator remote monitoring system.

[0002]

2. Description of the Related Art Generally, a remote monitoring system for an elevator monitors the operating status of a central monitoring device and elevator systems installed in a large number of remote buildings, respectively.
If something goes wrong with the elevator system,
When there is no abnormality, the transmission timing is determined and a normal operation signal such as an identification signal is periodically transmitted to a monitoring device through a general telephone line. Then, in the conventional remote monitoring system of the elevator, when the monitoring device does not receive the normal operation signal from any of the terminal devices within a predetermined time,
An alarm indicating that an abnormality has occurred in the terminal device is output to an observer, and a display indicating which terminal device the abnormality has occurred is output to the monitoring display device.

[0003]

However, such a conventional elevator remote monitoring system has the following problems. That is, when a normal operation signal is transmitted from a large number of terminal devices to a central monitoring device through a general telephone line, one of the terminal devices may be affected by a temporary defect in the telephone line state such as partial loss of data, interference, or crosstalk. There may be a case where the signal of (1) cannot be received, but in such a case, it may be transmitted normally by retransmitting after a little time.

However, there is no conventional device having a function of retransmitting data in anticipation of the occurrence of such a temporary failure of the communication line, and a normal operation signal is once transmitted from any terminal device within a fixed time. However, if it is not received, it will immediately generate an alarm as if the terminal device has an abnormality,
Since the maintenance staff was dispatched to the building where the terminal device is installed, there is no problem even if the maintenance staff examines the terminal device, and it ends up being a waste of labor. There was a point.

The present invention has been made in view of the above conventional problems, and in the case where a normal operation signal cannot be received from a specific terminal device due to a temporary failure of the communication line, It is an object of the present invention to provide an elevator remote monitoring system capable of preventing an alarm from being generated when an abnormality occurs in a terminal device and suppressing waste of personnel costs due to wasteful dispatch of maintenance personnel.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a central monitoring device, an elevator system installed in each of a plurality of buildings, and a plurality of terminals connected to the monitoring device by a communication line to monitor each elevator system. When an abnormality occurs in the elevator system that each terminal device is in charge of, the terminal device immediately sends the abnormality signal,
In addition, in an elevator remote monitoring system that transmits a normal operation signal to a monitoring device at regular fixed times during normal operation, whether the monitoring device periodically receives normal operation signals from each terminal device. When the reception status confirmation means to be checked and the reception status confirmation means determine that the normal operation signal is not received from any of the terminal devices, a reconfirmation request signal is transmitted to the terminal device through the communication line. Confirmation reporting means and an abnormality output means for outputting an abnormality of the terminal device when the reconfirmation reporting means does not receive a normal operation signal from the terminal device that transmitted the reconfirmation request signal, each terminal device, It is provided with a reconfirmation request receiving means for retransmitting the normal operation signal when the reconfirmation request signal from the monitoring device is received.

[0007]

In the elevator remote monitoring system of the present invention, when each elevator system is normal, a normal operation signal such as an identification signal for periodically identifying the terminal device from each terminal device to the central monitoring device through the communication line is provided. To send. When the normal operation signal from the specific terminal device is not received, the monitoring device designates the terminal device that could not be received and transmits the reconfirmation request signal, and the corresponding terminal device receives it. Retransmit the normal operation signal,
If the monitoring device can receive it, it will not output the error occurrence.
However, in response to the reconfirmation request, if the normal operation signal is not retransmitted from the corresponding terminal device, it is determined that an abnormality has occurred in the terminal device, and an abnormality occurrence is output to notify the observer.

In this way, when a normal operation signal is transmitted from a specific terminal device and a failure occurs in the communication line by accident, and the monitoring device cannot receive the transmission signal, the terminal device immediately receives the signal. By not checking that an abnormality has occurred but checking again whether there is an abnormality or not, it is possible to reduce the chance of wasteful dispatch of maintenance personnel to the site and save labor and labor costs.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows the system configuration of an embodiment of the present invention. The remote monitoring system for an elevator of this embodiment is connected to a central monitoring device 1 and this monitoring device 1 by a number of communication lines, and a large number of Each elevator system installed in the building is monitored, and when an abnormality occurs in one of the elevator systems, the abnormality information is immediately reported.If no abnormality occurs, the abnormality information is periodically reported at each time specified for each device. It is composed of a number of terminal devices 2 that transmit a normal operation signal to the monitoring device 1.

The monitoring device 1 has a computer as a main body, an interface for connecting a general telephone line to the computer, a storage device for storing the status monitoring information history of the elevator system of each terminal device, a failure history and other monitoring information, and necessary information. The input device, the display device, the printer, and the like for inputting and outputting the data are connected.

Each terminal device 2 is connected to the control device of the elevator system which is in charge of its own device, monitors the operating state of the elevator system, and when an abnormality occurs, the identification data of the own device and the time of abnormality occurrence, the abnormal state, etc. Abnormal information is immediately transmitted to the central monitoring device 1 through a general communication line, and when no abnormality occurs, the monitoring device 1 is assigned the identification data of its own device as a normal operation signal to the monitoring device 1 through a general telephone line. It is equipped with a function to periodically issue an alert at fixed time intervals. The functions of the monitoring device 1 and the terminal device 2 up to this point have been widely used.

As a feature of the present invention, the monitoring device 1
Further, the terminal database 3 in which the identification data of each terminal device 2 is registered, the confirmation report receiving device 4 that receives the identification data signal from each terminal device 2, and the information received by this confirmation report receiving device 4 The receiving storage device 5 to be stored, the identification data stored in the receiving storage device 5 are collated with the identification data registered in the terminal database 3 at predetermined intervals, and the terminal device in which the identification data is not recorded is identified. The alert confirmation device 6 to be identified, the re-confirmation alerting device 7 for transmitting a re-confirmation request signal urging the terminal device 2 identified by this alert confirmation device 6 to re-transmit the elevator state confirmation signal through a general communication line, An alarm is issued when the identification data signal as a normal operation signal cannot be received from the specific terminal device even by reconfirmation, and the terminal device is specified and displayed. And a error output device 8 that.

On the other hand, each terminal device 2 sends an identification data signal as a normal operation signal to the monitoring device 1 through the general communication line at a predetermined fixed period when there is no abnormality in the elevator system that it is receiving. , Receives the reconfirmation request signal from the reconfirmation reporting device 7 of the monitoring device 1, and confirms the identification data signal of its own device with the confirmation reporting device 9
The reconfirmation request receiving device 10 for retransmitting the data is provided.

Next, the operation of the remote monitoring system for elevators having the above construction will be described. When no abnormality has occurred in the elevator system that is in charge of its own device, each of the plurality of terminal devices 2 automatically dials the confirmation alarm device 9 for each terminal device 2 at regular time intervals and monitors the device. 1 is called, and when the line is connected, is transmitted as a normal operation signal of the identification data signal of the own device.

The monitoring device 1 receives the identification data signals transmitted from all the terminal devices 2 at their respective timings by the confirmation notification reception device 4, and stores the identification data in the reception storage device 5.

Then, the alarm confirmation device 6 collates the identification data stored in the reception storage device 5 with the identification data registered in the terminal database 3 at a predetermined cycle, and there is no notification of the identification data signal. The terminal device that has

If it is determined that the alarm confirmation device 6 has not received the identification data signal from any one of the terminal devices 2, the telephone of the terminal device is called from the database 3 based on the identification data of the corresponding terminal device. The number is read and a reconfirmation notification command is given to the reconfirmation notification device 7. Then, the reconfirmation notification device 7 performs the automatic dialing of the given telephone number and transmits the reconfirmation notification command when the general communication line is connected to the corresponding terminal device 2.

In the terminal device 2 which has received the reconfirmation notification command,
The reconfirmation receiving device 10 receives the reconfirmation notification command, gives a reconfirmation command to the confirmation notification device 9, and the confirmation notification device 9 sends the identification data signal of its own terminal device to the monitoring device 1. Resend.

Therefore, when the confirmation report receiving device 4 receives the retransmission at the monitoring device 1 side, it is registered in the reception storage device 5, the report confirmation device 6 confirms the report, and the error output device 8
Outputs nothing to. In other words, in this case, a temporary failure of the communication line happened to occur while transmitting the identification data signal from the corresponding terminal device 2 to the monitoring device 1. It is not necessary to take any measures for the occurrence.

However, even if the reconfirmation notification device 7 of the monitoring device 1 tries to transmit the reconfirmation notification request and the communication line cannot be connected for a certain time or more, or after the reconfirmation notification request signal is transmitted for a certain time or more. If the identification data signal is not retransmitted from the corresponding terminal device 2 even after the elapse, the reconfirmation reporting device 7 determines that an abnormality has occurred in the terminal device 2 and outputs an error output device. An alarm is issued by 8 and the abnormality occurrence information that specifies the corresponding terminal device is displayed, and is printed out to a printer that has been conventionally provided to inform the surveillance staff.

Therefore, when the monitoring staff hears this alarm, he / she confirms the terminal device having the abnormality by the error output device 8 and arranges for dispatching the maintenance staff to the site.

In this way, it is not determined that the terminal device has an abnormality immediately after one transmission failure, and it is determined that the terminal device has an abnormality only when communication is still impossible after reconfirmation. And dispatch maintenance personnel,
The number of cases in which a maintenance worker is wastefully dispatched to a terminal device that could not transmit the identification data signal as a normal operation signal due to a temporary failure of the communication line is reduced, and labor and labor costs are saved.

Conventionally, there is a communication system in which each terminal is designated from a center system and bidirectionally communicates, but in the case of an elevator remote monitoring system, an extremely large number of terminals are provided for one central monitoring device. Since the device is connected via a general communication line, in a system that periodically dials each terminal device from the monitoring device to call and receives a normal operation signal, connect the line by auto dialing and then It is not practical because it takes 45 seconds or more even if the time required to start data transmission is short. Therefore, a communication system has been adopted in which the timing to issue an alarm from each terminal device is set in advance and the normal operation signal is periodically transmitted from each terminal device to the monitoring device. In the present invention, in such an elevator remote monitoring system, by specifying a terminal device only when necessary and calling the terminal device from the monitoring device side to request a recurrence report, The remote monitoring of the terminal device and the reliable detection of the abnormality occurrence of each terminal device were made possible.

In the above embodiment, the reception confirmation cycle of the normal operation signal is not particularly limited, and after the timing at which the normal operation signal is likely to be received, depending on the transmission cycle of the normal operation signal of each terminal device. It can be done at any time, for example, by setting the time for each terminal device and checking, or by setting the time for all of the multiple terminal devices connected to the monitoring device and checking at one time. A method of dividing into groups and confirming the time for each group at a time is adopted.

[0025]

As described above, according to the present invention, when the normal operation signal from the specific terminal device is not received, the reconfirmation request signal is designated by the terminal device which the monitoring device could not receive. , The corresponding terminal device receives it and retransmits the normal operation signal, and if the monitoring device can receive it, it means that there was a temporary defect in the communication line and periodic transmission could not be performed. However, if the normal operation signal is not retransmitted from the applicable terminal device in response to the reconfirmation request, the error occurrence is output as if the terminal device has an error. In this case, when a normal operation signal is being transmitted from a specific terminal device, a failure may occur in the communication line and the monitoring signal cannot be received by the monitoring device. Immediately different to Without determining the occurrence, presence or absence of an abnormality occurred since carried out a re-confirmation can be determined, it is possible to save the effort and labor costs by reducing the opportunity to waste dispatched the maintenance personnel to the site.

[Brief description of drawings]

FIG. 1 is a block diagram showing a system configuration of an embodiment of the present invention.

[Explanation of symbols]

 1 Monitoring Device 2 Terminal Device 3 Terminal Database 4 Confirmation Notification Receiving Device 5 Reception Storage Device 6 Notification Confirmation Device 7 Reconfirmation Notification Device 8 Error Output Device 9 Confirmation Notification Device 10 Reconfirmation Reception Device

Claims (1)

[Claims] 1. A central monitoring device, an elevator system installed in each of a plurality of buildings, and a plurality of terminal devices connected to the monitoring device by a communication line to monitor each of the elevator systems. When an abnormality occurs in the elevator system that each terminal device is responsible for, the abnormality signal is transmitted immediately, and in normal times, the normal operation signal is transmitted to the monitoring device at regular time intervals that are set to the monitoring device. In the remote monitoring system, the monitoring device checks whether or not the normal operation signal from each of the terminal devices is periodically received, and the receiving condition confirmation device operates normally from any of the terminal devices. When it is determined that no signal is received, a reconfirmation request signal is sent to the terminal device through the communication line. A reconfirmation reporting means for transmitting the reconfirmation request signal, and an abnormality output means for outputting an abnormality of the terminal device when the reconfirmation reporting means does not receive the normal operation signal from the terminal device that transmitted the reconfirmation request signal. The remote monitoring system for elevators, wherein each of the terminal devices comprises reconfirmation request receiving means for retransmitting the normal operation signal when receiving the reconfirmation request signal from the monitoring device.