JPH04356831A - Alarm suppressing system - Google Patents

Abstract

PURPOSE:To use a main alarm suppression processing program in common for plural devices differing in monitor items such as the kinds of alarms or priority order, etc., without changing the program. CONSTITUTION:A logic number table 2 is provided to store the logic number of a suppression processing, which is executed when the alarm is generated, and the processing order for each alarm item, and a logic content table 4 is provided to store the storage position of alarm information on a source alarm buffer 1 used for relevant logic arithmetic, the contents of the logic arithmetic and the storage position of the arithmetic result on a processed alarm buffer 4 for each logic number. When the alarm is generated, an alarm suppression processing executing means 5 successively retrieves the logic number to be processed by the logic number table 2 and executes the extraction of the source alarm item as the suppression processing object and the storage of the logic arithmetic and the arithmetic result in the processed alarm buffer 4 according to the control of the logic content table 3 designated by the said retrieved logic number.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm suppression method for suppressing notification of lower level alarms when a plurality of alarms occur due to the same fault in a transmission device of a digital communication system.

0002

[Prior Art] Depending on the failure occurring within the transmission equipment,
An alarm may be generated not only for the monitoring item that is monitoring the failure, but also for a plurality of other monitoring items that are affected by the failure.

[0003] Therefore, the supervisory control unit that monitors alarms is notified of multiple alarms from each alarm detection unit due to the same failure, and multiple alarm indicator lights are turned on, causing a delay in identifying the true failure.

[0004] When a large number of alarms are generated for the same fault as described above, alarm information becomes congested within the monitoring system, resulting in a problem that it takes time to identify the location of the fault. Therefore, if multiple alarm items are prioritized and an alarm occurs in a higher-order alarm item, even if the same fault spreads and causes an alarm in a lower-order alarm item, the monitoring device for this lower-order alarm Alarm suppression processing is performed to suppress transmission to other parties.

[0005] The conventional method of this alarm suppression technology extracts alarm information from each alarm item one by one, and when an alarm occurs in an alarm item higher than that item, an alarm is generated in the extracted lower alarm item. Even if an alarm has occurred, it will be ignored and the monitoring unit will not be notified, and if a higher level alarm has not occurred, the alarm occurrence information of the retrieved lower level alarm item will be output as is and the monitoring unit will be notified. , the method was to compare each alarm item by item.

[0006]

SUMMARY OF THE INVENTION In the conventional alarm suppression method described above, the suppression logic is programmed in advance and executed by the CPU. However,
Since the types of alarms and the alarm detection positions differ depending on the device, there is a problem that the program is not versatile and it is necessary to prepare a program for each device, which is time-consuming.

The present invention was created in view of the above-mentioned problems, and allows common use in multiple devices with different monitoring items such as alarm types and priorities without changing the main alarm suppression processing program. The purpose is to

[0008]

[Means for Solving the Problems] FIG. 1 is a diagram illustrating the principle of an alarm suppression system according to the present invention. As shown in Figure 1, the above problem is caused by the alarm suppression processing method that suppresses the notification of lower-level alarms when a higher-level alarm is occurring, which retains the alarm information notified from all alarm detection units as is. an original alarm buffer 1 that holds alarm information that has been suppressed; and a processed alarm buffer 4 that holds alarm information that has been suppressed.
, a logic number table 2 that stores the logic number and processing order of the suppression process to be performed when the alarm occurs for each alarm item, and alarm information on the original alarm buffer 1 used for the logic calculation for each logic number. It has a logic content table 4 in which the storage location, logic operation contents, and the storage location of the operation result on the processed alarm buffer 4 are stored.When an alarm occurs for a certain alarm item, the alarm suppression processing execution means 5 sequentially searches the logic number table 2 for the logic number to be processed, and according to the contents of the logic content table 3 specified by the searched logic number, extracts the original alarm item to be suppressed, performs a logical operation, and calculates the result of the operation. This problem is solved by the alarm suppression method of the present invention, which is characterized by storing processed alarms in the buffer 4.

[0009]

[Operation] For each alarm item, the number of the suppression logic to be executed when the alarm occurs is stored in the logic number table, and the content of the suppression logic process corresponding to the logic number is stored in the logic content table in advance. ,
The suppression processing execution means refers to both tables and stores the alarm to be suppressed, the calculation contents and results of the suppression processing. As a result, even if the number of alarm items or processing logic differs from device to device, it is only necessary to change both tables, and there is no need to change the main program of the suppression processing execution means, so that the program can be made more general.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the accompanying drawings. Figure 1 is a principle block diagram of the alarm suppression method of the present invention, and Figure 2
is a diagram showing an example of alarm items of a transmission device and their suppression relationships, FIG. 3 is an example of storing original alarms in the original alarm buffer, FIG. 4 is an example of storing processed alarms in the processed alarm buffer, and FIG. 5 is an example of storing processed alarms in the processed alarm buffer. FIG. 6 is a configuration example of a logic number table, FIG. 6 is a configuration example of a logic content table, and FIG. 7 is a flowchart of an alarm suppression process execution procedure.

FIG. 2 shows, using a logic circuit, a plurality of line-related alarm items monitored by the domestic public line interface unit and definitions of suppression to be achieved between the alarm items. In the embodiment described below, it is assumed that this suppression processing is realized. In FIG. 2, the 11 types of alarm items in the left column are suppressed by logical operations in the middle column and output as suppressed alarms as in the right column. This definition is explained as follows.

1. “FSYNC” alarm is “CMI
2. The “MFSYNC” alarm is suppressed when the “CMI DWN” alarm is occurring.
Or, it is suppressed while "FSYNC" is occurring.

3. “DNR” alarm is “CMI D”
4. The "UNR" alarm is suppressed while "CMI DWN" or "FSYNC" is occurring.

5. “SEND” alarm is “CMI
6. The “S OFF” alarm is suppressed when “CMI DWN” or “FSYNC” is occurring.
Or, it is suppressed while "FSYNC" is occurring.

7. “X50 SYNC” alarm is “
8. The “BUF SLIP (TX)” alarm is suppressed while “CMI DWN” or “FSYNC” is occurring.
It is suppressed while "L DWN" or "CMI DWN" is occurring, and is output by ORing with "BUF SLIP (RX)".

9. “BUF SLIP (RX)” alarm is “PLL DWN” or “CMI DWN”
” is suppressed while “BUF SLIP (TX)
” is output.

Note that the numbers appended to the logical operation symbols in the middle row are logic numbers, which are the codes referred to in the logic number table described later. FIG. 1 shows a hardware configuration for executing the above-mentioned suppression process. In the figure, 5 is a CPU, 1 is an original alarm buffer, 2 is a logic number table, 3 is a logic content specification table, and 4 is a processed alarm buffer. Under the control of the main program, the CPU 5 performs suppression processing on the raw alarm information in the original alarm buffer 1 while referring to the logic number table 2 and logic content table 3, and stores the processing result data in the processed alarm buffer 4. do.

FIG. 3 shows an example of storing original alarm information in the original alarm buffer. The original alarm buffer 1 is set in an 8-bit character array on the memory, and each monitoring unit detects each of the above-mentioned alarms. 1-bit alarm information (“0” if there is no alarm, “1” if an alarm occurs) is received and stored at a predetermined address and bit position for each alarm item.

FIG. 4 shows an example of storing processed alarm information in the processed alarm buffer. The processed alarm buffer 4 is set in memory as an 8-bit Chractor type array, and stores alarms that have been suppressed according to the above definition. Information is stored for each item at a predetermined address and bit position. Alarm information from the processed alarm buffer 4 is appropriately output to the higher-level alarm monitoring device.

Logic number table 2 in FIG. 5 is a numerical table arranged in a matrix array provided on the memory, and the logic numbers (added to the logical operation symbols in FIG. 1) are indicated by the arrangement position (digit position) in the row direction. The arrangement position (line position) in the digit direction indicates the generated alarm item that is the trigger. The stored numerical data (displayed in hexadecimal) indicates the order in which the logic numbers shown in the upper column are executed. However, ff means the final execution order. For example, the second line shows the alarm item “CMI
This is a column that is referenced by the main program when an alarm occurs on "DOWN", and the suppression process with logic number 1 is executed first, and then 2, 3, 4, 5, 6, 10.
, 11, and finally logic number 12 is executed.

The logic content table 3 in FIG. 6 is a numerical value table arranged in a matrix on the memory, where each row corresponds to a logic number specified in the logic number table, and indicates the suppression process for each alarm item. It shows the alarm information that should be input to the logical operation to be executed, the contents of the logical operation, and the storage location of the results. That is, each row is divided into six sections, and the four sections on the left specify alarm items used for logic operations. The first two numbers in each section specify the address and bit position of the original alarm buffer 1 where the alarm information for the target alarm item is stored, and the third number specifies the bit position when inputting that bit. Specifies whether there is a polarity reversal (0:
No polarity reversal, 1: polarity reversal). For example 1
The line with logic number 1 is the alarm item “FSYNC”.
”, 121 in the #1 section is stored in the 2nd bit of address 1 in the original alarm buffer as the input alarm data for suppressing the “CMI
130 of section #2 uses the data of "FSYNC" stored in the third bit of address 1 without polarity inversion.The fifth section is as follows: This shows the content of the suppression logical operation on the input data, where 1 is a logical sum,
2 indicates logical product. For example, logic number 2 indicates that an OR operation is performed on the above two input data. The last section is the processed alarm buffer in which the output data of the logic operation result is to be stored. It indicates the address and bit position of the corresponding alarm item and whether polarity is reversed at the time of storage (0: polarity is not reversed, 1: polarity is reversed). For example, 310 in the last section of logic number 2 is the 1st bit of address 3 of the processed alarm buffer (this is FSY
Indicates that the signal is stored in the NC storage position) without polarity reversal.

That is, the processing means refers to the logic number table, sequentially searches for logic numbers to be processed, refers to the logic content table, and stores the input data, arithmetic logic, and output corresponding to the searched logic number. Find the position and execute the process.

Next, the procedure for executing alarm suppression processing using the buffer and table described above will be explained with reference to the flowchart shown in FIG. When a certain alarm item detection unit detects a failure and the corresponding alarm item in the original alarm buffer 1 changes to "1", the alarm suppression processing program (suppression processing execution means)
is started. The alarm processing program sets the execution order pointer to 1. (S-1) Next, the processing program refers to the logic number table and finds the digit position where the stored numerical value and the execution order pointer match on the row (address) corresponding to the alarm occurrence item on the table. Search for. (S-2) The digit position indicates the number of the suppression logic process to be executed first. Next, on the logic content table, logical operations are performed in order according to the data stored in the row (address) indicated by the logic number. That is, first, the alarm data specified by input alarm items #1 and #2 is taken out from the original alarm buffer and processed according to the input polarity inversion specification and logic specification. (S-3)
Furthermore, it is determined whether there is an input alarm item (S-4
), if so, the process is repeated between the results processed up to that point and the next alarm item #n. When processing for all input alarm items specified at the address is completed, the final processing result is stored in the address and bit position of the processed alarm buffer specified in the final section of the logic content table. Specify polarity inversion. Store according to. (S-5) Next, the execution order pointer is f
(S-6) If it is not ff, it indicates that there are still alarm items to be suppressed that should be processed, so the execution order pointer is set to +1, and (S-6)
-7) Process the logic numbers from 1 to ff specified in the relevant row of the logic number table (corresponding to the trigger alarm item) in the same way. When all of the above processing is completed, the processed alarm buffer contains the primary alarm due to the failure occurrence and the multiple secondary alarms that occurred simultaneously due to the spread of the failure and were notified from each detection unit to the original alarm buffer. Alarm information that has been suppressed, with secondary alarms ignored by the alarm suppression process, is stored in the processed alarm buffer, and only the primary alarm is retrieved to a monitoring unit (not shown) as needed, making it possible to efficiently identify the fault location. It is carried out according to

[0024]

[Effects of the Invention] As is clear from the above explanation, in the alarm suppression method of the present invention, alarm suppression processing is not provided in the program, but is provided by two tables, the logic number table and the logic content table. It can be used to suppress alarms for devices with different configurations without changing the processing program, and the program can be made more general. Furthermore, even when changing the content of the suppression process, it is only necessary to change the table data, which simplifies the maintenance of the alarm system.

[Brief explanation of drawings]

[Figure 1] Principle configuration diagram of the alarm suppression method of the present invention

[
Figure 2: Diagram showing alarm items and their suppression relationships in one example of transmission equipment

[Figure 3] Example of storing the original alarm in the original alarm buffer

[Figure 4] Example of storing processed alarms in processed alarm buffer

[Figure 5] Example of configuration of logic number table

[Figure 6]
Configuration example of logic content table

[Figure 7] Flowchart of alarm suppression processing execution procedure

[Explanation of symbols]

1─Original alarm buffer, 2─Logic number table,
3─Logic content table, 4─Processed alarm buffer, 5─CPU

Claims (1)

[Claims] Claim 1: In an alarm suppression processing method that suppresses notification of lower-level alarms when a higher-level alarm is occurring, an original alarm buffer (original alarm buffer) that holds alarm information notified from all alarm detection units as is is used. 1
), a processed alarm buffer (4) that holds alarm information that has been suppressed, and a logic number table (2) that stores the logic number and processing order of the suppression process to be performed when the alarm occurs for each alarm item. ), the storage position of the alarm information on the original alarm buffer (1) used for the logic operation, the contents of the logical operation, and the storage position of the operation result in the processed alarm buffer (4) for each logic number are stored. When an alarm occurs in a certain alarm item, the alarm suppression processing execution means (5) sequentially searches the logic number table (2) for the logic number to be processed and selects the corresponding logic number. According to the contents of the logic content table (3) specified by the searched logic number, the original alarm item to be suppressed is extracted, logically operated,
An alarm suppression method characterized by storing calculation results in a processed alarm buffer (4).