JPH0368584B2 - - Google Patents

Description

[Detailed Description of the Invention] [Summary] Communication lines are monitored using distributed processors, and judgment information based on the occurrence of a failure, its time information, etc. is also sent to the processor responsible for monitoring the communication line affected by the occurrence of a failure. The processing load of each processor is reduced through distributed processing, and even if a processor fails, other healthy processors can continue monitoring the monitoring area.

[Industrial application field]

The present invention relates to a distributed monitoring and control system for monitoring communication lines by setting monitoring areas by a plurality of processors to partially overlap.

Transfers various monitoring information from communication line relay stations, etc., including wireless communication lines, etc. to the monitoring station, quickly and accurately detects the occurrence of a failure, and performs recovery processing to minimize communication line downtime. It is requested to do so.

[Conventional technology]

Conventional methods for monitoring communication lines include a centralized monitoring method and a distributed monitoring method. For example, in the centralized monitoring method, as shown in FIG. 12, and the processor 11 monitors all monitoring points 13-1 to 13-1 such as relay stations and terminal stations of the communication line 12.
We collect various monitoring information from 13-5, determine whether a failure has occurred based on the monitoring information, and when it is determined that a failure has occurred, we dispatch maintenance personnel to recover. It displays the location of the failure and outputs an alarm.

In addition, the distributed monitoring method is divided into multiple monitoring areas 22, 23, 24, and 25, as shown in FIG.
-4, and each processor 21-1 to 21-4
collects monitoring information from monitoring points on communication lines (not shown) within its own monitoring area, and determines whether a failure has occurred.If a failure occurs, the system collects monitoring information from monitoring points on communication lines (not shown) within its own monitoring area. It is something to be processed.

[Problem that the invention seeks to solve]

In the conventional centralized monitoring method described above, the entire range of the communication line is monitored by one processor 11, so the amount of information to be processed is extremely large.
Since it requires a large processor 11, it has the drawback of causing economical problems. Furthermore, if the number of monitoring information to be collected is limited in order to solve this problem, the reliability of monitoring becomes low. Furthermore, if a failure occurs in this processor, it becomes impossible to monitor the entire range of the communication line, and from this point of view as well, there is a drawback that highly reliable monitoring cannot be performed.

Furthermore, in the conventional distributed monitoring method described above, the monitoring area in the centralized monitoring method is divided and processors are placed in each area, and the amount of information that each processor has to process is reduced in inverse proportion to the number of divisions of the monitoring area. Therefore, the processor can be made smaller.

However, the communication line is provided across each monitoring area, and for example, the processor 21-1 determines that a failure has occurred using the monitoring information collected from the communication line monitoring point in the monitoring area 22. When this occurs, even if communication lines in other monitoring areas, for example 24, are also affected, the processor 21-3 in charge of that monitoring area 24 will not be able to detect the occurrence of the failure.

Therefore, it is conceivable to mutually transfer the collected monitoring information between the processors 21-1 to 21-4, but as the number of processors increases, the lines for interconnection become complicated, and each processor 21
-1 to 21-4 have the disadvantage that the amount of processing increases. Further, due to a delay in the transfer of monitoring information, there is a possibility that a processor in another monitoring area makes a judgment error. Also, similar to the case of the centralized monitoring system, when a failure occurs in a processor, there is a drawback that communication lines in the area that the processor is in charge of cannot be monitored.

An object of the present invention is to perform distributed monitoring using a plurality of processors, to enable monitoring of other monitoring areas, and to perform accurate and quick monitoring.

[Means for solving problems]

The distributed monitoring and control system of the present invention will be explained with reference to FIG. A part of the monitoring areas of the processors 1 to 1-m are set to overlap, and fault information is transferred between a processor that is a master station (for example, 1-1) and any processor that is a slave station. A processor equipped with lines 4-1 and 4-2 and determining that a failure has occurred based on the monitoring information from monitoring points 3-1 to 3-7 of the communication line 2 uses judgment result information of the failure occurrence, time information, Fault information consisting of affected line information, fault location information, etc. is transferred to the processor having the monitoring area of the communication line 2 affected by the occurrence of the fault via the processor 1-1 serving as a master station.

[Effect]

The monitoring areas are set to partially overlap each other, with the monitoring area of processor 1-1 shown as a two-dot chain line, the monitoring area of processor 1-2 as a one-dot chain line, and the monitoring area of processor 1-m shown as a dotted line. .
Therefore, even if a failure occurs in one processor, monitoring can be continued by processors having partially overlapping monitoring areas.

Each processor also has a monitoring point 3-1 on the communication line 2.
It is possible to determine whether a failure has occurred based on the monitoring information from ~3-7, and when it is determined that a failure has occurred, to obtain information such as the time, the line affected by the failure, and the location where the failure occurred. Therefore, the fault information consisting of judgment result information, time information, affected line information, fault location information, etc. is sent to the processor in the monitoring area of the communication line 2 affected by the fault via the processor 1-1, which is the master station. and transfer it.

Therefore, when the processor that has received the failure information refers to the time information and determines the monitoring information from the monitoring point of the communication line in its own monitoring area, it determines whether it is before or after the time when the failure occurred. It is possible to determine if it is correct. Furthermore, by transferring data via a master station, the lines between processors can be simplified.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an explanatory diagram of an embodiment of the present invention, in which processors (CPUs) 1-1 to 1-m monitor communication lines 2 such as wireless communication lines and carrier communication lines. The monitoring area of processor 1-2 is shown by a dashed-dotted line, the monitoring area of processor 1-2 is shown by a dashed-dotted line, and the monitoring area of processor 1-m is shown by a dotted line.
Each setting is partially duplicated.

Although the communication line 2 is illustrated as having one line, it may include multiple lines or branch lines, and is monitored by processors 1-1 to 1-m corresponding to monitoring areas. Then, relay stations, terminal stations, etc. of the communication line 2 are set as monitoring points 3-1 to 3-7, and status information such as temperature, power consumption, output power, etc. of the relay device is obtained from each monitoring point 3-1 to 3-7. Monitoring information such as error rate information of transmission information is transferred to the processors 1-1 to 1-m through lines separate from the communication line, as shown by solid line arrows and dotted line arrows.

The processors 1-1 to 1-m are divided into a master station processor 1-1 and a slave station processor 1-1.
Line 4 that transfers fault information between 2 and 1-m.
-1 and 4-2 are provided. Each of the processors 1-1 to 1-m maintains the relationship between the failure location and the communication line affected by the failure using a table or the like.
1 has a function of selecting a destination to which fault information is to be transferred.

The processor 1-2 collects monitoring information from the monitoring points 3-1 and 3-2 and determines whether there is a failure. Since the processor 1-m also enters the monitoring area of the processor 1-m, the processor 1-m also collects the monitoring information, as shown by the dotted arrow. For example, when the processor 1-2 determines that a failure has occurred based on the monitoring information from the monitoring point 3-2, it can determine which communication lines are affected by the failure and monitor the affected communication lines. For example, processor 1-m in the area
This is to transfer fault information to. In this case, the destination and source are added to the fault information including the determination result information, time information, affected line information, fault location information, etc., and the resultant information is sent to the line 4-1.

Processor 1-1, which is the master station, identifies the destination and sends the fault information to line 4-2. Therefore, failure information can be transferred from processor 1-2 to processor 1-m. The processor 1-m that received this failure information checks the monitoring points 3-3, 3
- Even if an abnormality is found in the monitoring information from monitoring point 3-2, etc., it is possible to identify that the fault has occurred at monitoring point 3-2 by referring to the time information and fault location information in the fault information. be able to.

FIG. 2 is an explanatory diagram of connections between processors. Processors 1-1 to 1-5 are arranged in a distributed manner, and each processor 1-1 to 1-5 monitors a communication line (not shown). The monitoring areas are set to partially overlap. Lines a to d are provided between processor 1-1, which is a master station, and processors 1-2 to 1-5, which are slave stations. Further, a line selection table 5 is provided in the processor 1-1, which is the master station.

FIG. 3 is an explanatory diagram of a line selection table provided in the processor 1-1, in which lines a to d to be selected depending on the source and destination are stored. for example,
Processor 1-2 is the source and destination is processor 1.
-4, line c is selected.

FIG. 4 is an explanatory diagram of failure information, where F is a frame pattern that includes information on destination, source, determination result, time, affected line, and failure location. When such fault information is sent from processor 1-2 to processor 1-4 as in the example above, processor 1-1, which is the master station, extracts the destination and source and connects the line. Referring to selection table 5, since the source is processor 1-2 and the destination is processor 1-4, the fault information received via line a is sent to line c. Therefore, processor 1-4 can receive failure information from processor 1-2.

Also, when sending fault information from processor 1-1, which is the master station, to each processor 1-2 to 1-5,
By referring to this line selection table 5,
Lines a to d for transmitting the fault information can be easily selected.

〔Effect of the invention〕

As explained above, in the present invention, the communication line 2 is monitored in a distributed manner by the distributed processors 1-1 to 1-m, and the monitoring areas are set to partially overlap with each other. . Therefore, even if a failure occurs in a certain processor, the communication line within its monitoring area can be monitored by other processors, which is advantageous.

Furthermore, when it is determined that a failure has occurred, the failure information including time information is transferred along with the determination result to the processor in the monitoring area of the communication line affected by the failure, so it is important to know at what time the failure was determined. As a result, even if there is a large delay in collection of monitoring information in the own processor, the occurrence of a fault can be quickly identified, and the fault location and affected line will be notified. Even if the location where the failure occurs is monitored, a quick and correct determination can be made.

In addition, since fault information is transferred via the processor serving as the master station, there is an advantage that the line between the processors can be relatively simplified, and since the processors cooperate to perform mutual monitoring,
This has the advantage that the reliability of monitoring communication lines can be greatly improved.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of an embodiment of the present invention, Fig. 2 is an explanatory diagram of connections between processors, Fig. 3 is an explanatory diagram of a line selection table, Fig. 4 is an explanatory diagram of fault information, and Fig. 5 is an explanatory diagram of the connection between processors.
FIG. 6 is an explanatory diagram of a conventional centralized monitoring system, and FIG. 6 is an explanatory diagram of a conventional distributed monitoring system. 1-1 to 1-m are processors (CPUs), 2 is a communication line, 3-1 to 3-7 are monitoring points, 4-1, 4-
2 is a line, and 5 is a line selection table.

Claims (1)

[Scope of Claims] 1. Monitoring areas of the communication line 2 by a plurality of distributed processors (1-1 to 1-m) are set to partially overlap, and The processor is equipped with a line for transferring fault information between the communication line 2 and a processor that is an arbitrary slave station, and the processor that has determined that a fault has occurred in the communication line 2 within the monitoring area receives judgment result information of the fault occurrence, time information, Distributed monitoring characterized in that failure information including affected line information, failure location information, etc. is transferred to a processor having a monitoring area of the communication line 2 affected by the occurrence of the failure via the processor serving as the master station. control method.