JPH01240097A - Centralized supervisory system - Google Patents

Abstract

PURPOSE:To economically improve the reliability of the title centralized supervisory system by assigning the supervision of all sections to the supervisory equipment of one terminal station when a communication line is not in fault and supervising them dividedly by the supervisory equipments of both terminal stations when the communication line is in fault. CONSTITUTION:A supervisory equipment 2 of the nearby terminal station supervises all sections when a communication line 10 is normal. When the communication line 10 is in fault, it supervises the sections up to the place in fault. The supervisory equipment 3 of the opposite terminal station does not supervise any sections when the communication line 10 is normal. When the communication line 10 is in fault, it supervises the sections subsequent to the place in fault. When a public telephone circuit is used as a backup route 4 to the supervisory equipment 3 of the opposite terminal station, the backup route can be set economically and the highly reliable centralized supervision can be easily attained economically.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a centralized monitoring system, and particularly to a system for relieving unmonitorable sections to the maximum extent possible even if there is a communication path failure when centrally monitoring at one end station.

[Conventional technology]

Conventionally, in this type of centralized monitoring, a method of centrally monitoring at both end stations as shown in FIG. 2 has been adopted in order to improve reliability. In this figure, 11 is a central monitoring device, 12
is a monitoring device, and 13 is a remote monitoring device, a central monitoring bag, and i! I was inputting information independently on l11.

In addition, as shown in FIG. 3, for intensive monitoring at only one end station, a central monitoring bag 11 is provided only at one end station, and the monitoring device 2112 of the opposite end station is connected to the central monitoring bag 2211 as a backup loop) 14. The monitoring information from the monitoring devices 12 and 12 at both end stations was input to the central monitoring device.

[Problems to be Solved] The conventional method of centrally monitoring at both end stations as described above is expensive because the central monitoring device 11 must be provided at both end stations.

On the other hand, with the conventional method of centrally monitoring at one end station.

When the communication path is normal, the same monitoring information is being sent from the monitoring devices 2t12 and 12 at both end stations, so the central monitoring device 1
There is a problem in that it is necessary to identify these duplicate pieces of information within the same system, and multiple processes are required for synchronization etc. due to the difference in the transmission time of monitoring information from both terminal stations.

In addition, in the event of a failure in the communication path, the monitoring equipment 12.1 of both terminal stations
2 monitors all sections, the monitoring enabled section and unbalanced section of the near end tube and the opposite end station are reversed, and the unmonitorable information of the monitoring bag 2112.12 of the near end tube and the opposite end station is analyzed. There was a problem in that complicated processing was required to do so.

The present invention was made in consideration of the problem described in item L, and by changing the monitoring section of the monitoring devices at both end stations depending on whether the communication path is normal or when there is a failure, it is possible to economically and reliably monitor all sections. The purpose is to provide a centralized monitoring method that allows

[Means for Solving Problems] In the centralized monitoring system of the present invention, a central monitoring device and a monitoring device are provided in the near-end tube, a backup monitoring device is provided in the opposite end station, and when one communication path is normal, the near-end tube is not operated. The entire section is monitored by a monitoring device, and when there is a failure in the communication path, the monitoring devices at the near end tube and the opposite end station monitor the entire section by dividing it into sections according to the location of the failure.

Embodiment] Next, an embodiment of the centralized monitoring system of the present invention will be described with reference to FIG.

FIG. 1 is a conceptual diagram of a centralized monitoring system using a centralized monitoring method. In this figure, l is the central monitoring device, 2 is the near-end tube monitoring device (parent), and 3 is the opposite-end monitoring device? i(
parent) and is connected to central monitoring bag 1 via backup route 4. 5 to 9 are remote monitoring devices (children), which are connected to the monitoring devices 2 and 3 fill through a communication path IO.

The monitoring device 2 of the near-end tube is set to monitor the entire section when the communication channel 10 is normal, and is set to monitor the section up to the fault when the communication channel 10 is in trouble. The monitoring device 3 of the terminal station is set not to monitor the entire section when the communication channel 10 is normal, and is set to monitor the section after the fault point when the communication channel 10 is in trouble.

Next, a method of performing centralized monitoring using one or more centralized monitoring systems will be described.

First, if 1 communication channel 10 is normal, remote monitoring bag 2I15
Only the monitoring device 2 at the near end tube monitors the entire section from 9 to 9, and the central monitoring device 1 manually receives monitoring information only from the monitoring bag 7I2. Therefore, duplicate monitoring information is not input to the centralized monitoring bag 211.

Now, if it is assumed that the remote monitoring devices 6 and 7 also fail in section A, the monitoring device 2 will be unable to monitor the remote monitoring devices 7 to 9, and this information will be notified to the central monitoring device 1. As a result, the monitoring bag 212 covers the monitoring area with the remote monitoring device 5.
, 6, and the monitoring section of the monitoring device 3 is set to the remote monitoring devices 7 to 9. Therefore, the entire section is monitored by the monitoring device 2.degree.3 in a state where it is divided into two sections. As a result, information according to each monitoring classification is transferred from both monitoring devices 2!2.3 to the centralized monitoring bag 2i1, and rapid processing is performed.

In addition, if a public telephone line is used as the backup route 4 to the monitoring bags 2 and 3 at the opposite terminal station, it becomes possible to economically install a /- pick-up route, which is economically reliable. Centralized monitoring is easy.

[Effects of IJ'N] As explained above, in the present invention, when there is no failure in the communication path, one terminal station's monitoring bag can monitor the entire interval, and when one communication path has failure, By performing separate monitoring using the monitoring devices at both end stations, it is possible to economically improve the reliability of the centralized monitoring system.

[Brief explanation of the drawing]

FIG. 1 shows a conceptual diagram of a system used in the centralized monitoring system of the present invention, and FIGS. 2 and 3 show conceptual diagrams of a system used in a conventional centralized monitoring system. 1: Central monitoring device 2.3 = Monitoring device 4: Pack-up route 5-9: Remote monitoring device 10: Communication path

Claims (1)

[Claims] A central monitoring device and a monitoring device are installed at the near-end station, and a backup monitoring device is installed at the opposite end station.When the communication path is normal, the monitoring device at the near-end station monitors the entire section, and when the communication path is in trouble, the near-end station monitors the entire section. This is a centralized monitoring method that uses monitoring devices at one end station and the other end station to separate and monitor the entire area according to the location of the failure.