JPH04177930A - Alarm discrimination system - Google Patents

Abstract

PURPOSE:To specify a cause to a fault quickly and to attain quick countermeasure by applying alarm discrimination and analysis processing to an alarm detected by a fault detection device. CONSTITUTION:Alarm information collected from plural fault detection devices is inputted from a terminal 1 to a mask processing section 3 to mask an undesired alarm in the alarm information by using control information given from a terminal 2. An alarm discrimination section 5 receives an output 4 of an alarm mask section 3 and discriminates a canal relation of raised alarm based on the signal system configuration system in the inside of the equipment or a production mechanism of a line fault, detects only a primary alarm being a true cause and eliminates a secondary alarm derived from the primary alarm. An alarm analysis section 7 receives an output 6 from the alarm discrimination section 5 to obtain time correction processing and time chance tendency. Thus, the true cause is specified and the time required for fault analysis is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an alarm determination method for identifying the location and cause of a failure occurring in a communication device and a communication line.

[Prior Art] Conventionally 1, when monitoring a communication device for a fault, various fault detection mechanisms are installed inside the device and at the connection to the line, and fault information detected by these detection mechanisms is communicated as an alarm. Failure monitoring is performed by directly outputting to the display unit of the device itself or the monitoring console.

[Problems to be Solved by the Invention] However, in the conventional fault monitoring system, in addition to the true cause of the alarm, alarms that occur accompanying it (for example, when the high-speed side line is disconnected in a multiplex converter) , communication disconnection alarms are generated even on all multiplexed low-speed lines) are also detected at the same time. For this reason, it is difficult to identify the true cause.

Furthermore, since the above-mentioned alarm detection is strongly dependent on physical detection mechanisms, the information required by the operator cannot be obtained directly from the alarm information that is actually output. Is it necessary to understand the mechanism and then analyze the detected alarm? Therefore, not only knowledge and experience are required to operate the fault monitoring system, but also time is required for analysis, which poses a problem in that only prompt fault response is possible.

An object of the present invention is to provide an alarm determination method that can quickly identify the cause of a failure and take prompt action to deal with the failure.

(Means for Solving the Problems) According to the present invention, it is used to monitor failures in one communication device and communication line and to identify the location of the failure.

a detection means that detects a failure in the communication device and the communication line and outputs alarm information; a mask processing unit that removes predetermined information from the alarm information and outputs it as mask information; and a mask processing unit that receives the mask information. , an alarm determination unit that extracts an alarm corresponding to the cause-and-effect relationship of alarm generation as an extracted alarm; and an alarm determination unit that analyzes the extracted alarm.

An alarm determination method is obtained, comprising: an alarm analysis section that identifies the fault location based on the analyzed alarm.

At this time, the mask processing unit removes, as the predetermined information, unnecessary information according to the internal state and monitoring necessity state of the communication device and information that is generated derivatively according to a change in the alarm information.

When the alarm analysis unit identifies the fault location.

The analysis alarm is corrected over time and its change tendency is determined.

E Example The present invention will be explained below with reference to examples.

Referring to FIG. 1, alarm information collected from a plurality of failure detection mechanisms (not shown) arranged inside the 1 communication wt (not shown) is input to the mask processing unit 3 from the terminal 1. . The mask processing section 3 uses the control information given from the terminal 2 to mask unnecessary alarms in the alarm information.

Operations performed in mask processing include the following.

(1) Spatial mask: Removes things that do not need to be regarded as alarms on a regular basis, depending on the device operation setting state, hardware implementation state, power on/off state, etc.

(2) Temporal mask: Removes alarms that do not need to be monitored depending on the time of day, and alarms that occur derivatively for a short period of time in response to changes in specific alarms (derivative alarms).

An example of a derivative alarm is an out-of-synchronization alarm that occurs during the out-of-synchronization caused by a momentary interruption of two lines.

The alarm determination section 5 receives the output 4 of the alarm mask section 3 as an input, and determines the signal system configuration inside the device or the output 4 of the alarm mask section 3.

The cause-and-effect relationship between the two alarms generated by the line fault generation mechanism is determined, only the primary alarm that is the true cause is extracted, and the secondary alarms derived from the -th alarm are removed.

This alarm determination section 5 can be realized by, for example, a table lookup method.

Referring now to FIG. 2, a pair of modems (M
D) 11 and 12 are used opposite each other. MDI
I and MDI2 are 1 communication line 5-LINE13 and R-
Transmission and reception are performed using LINE14. MDII and MDI2 monitor the transmission level (SP), reception level (RP), and reception signal quality (SQ) to the communication line, and detect an alarm when these become below a predetermined threshold. Alarms detected on MDI2 are sent to control line 1.
5 to MDII. Furthermore, when the 2MD 12 detects a failure (MD) or a power failure (MP) in the device itself, it notifies the MDI 2 of an alarm through the control line 15. Furthermore, MDII.

Detects a failure (MD) in the device itself.

In MDII, based on the collected alarm information, the third
The true fault location and cause are determined and output using the determination table shown in the figure. That is, one person searches for a button that matches the state of the alarm information.

Outputs the judgment power (fault location, fault cause) corresponding to the matched input button.

The alarm analysis section 7 inputs the output 6 from the alarm determination section 5, and calculates a temporal correction process and a temporal change trend.

Here, the two-hour correction refers to cases where the alarm information itself has disappeared because the alarm source has stopped operating, but the fault phenomenon continues, or the signal path that notifies the fault itself has been cut off. When the route is re-opened, the failure event is retained or shifted on the time axis in cases where the time does not match because the notification is delayed.

As an analysis of temporal change trends, there is a process in which failures that occur intermittently are accumulated at regular intervals over a long period of time, and the ratio of the failure time to the total, or the frequency of occurrence, is determined.

[Effects of the Invention] As explained above, in the present invention, since the alarm detected by the fault detection mechanism is subjected to alarm judgment and analysis processing, it is possible to present the true fault location and cause to the operator. I can do it.

Furthermore, there is an advantage that special knowledge and experience regarding the internal structure of the device is not required, and the time required for failure analysis can be shortened.

[Brief explanation of the drawing]

FIG. 1 is a block diagram for explaining an alarm determination method according to the present invention, and FIG. 2 is a block diagram for explaining the present invention by taking a modem with a network monitoring function as an example.
FIG. 3 is a diagram showing an example of the configuration of a determination table for performing alarm determination. 1... Alarm information input terminal, 2... Control information input terminal, 3... Mask processing section, 4... Mask processing output. 5... Alarm judgment section, 6... Alarm judgment output,
7...Alarm analysis section, 8...Alarm analysis output terminal. Figure 1 Figure 2

Claims (1)

[Scope of Claims] 1. Detection means used when monitoring a failure in a communication device and a communication line and identifying the location of the failure, detecting a failure in the communication device and the communication line, and outputting alarm information. a mask processing unit that removes predetermined information from the alarm information and outputs it as mask information; and an alarm determination unit that receives the mask information and extracts an alarm corresponding to the cause and effect relationship of the alarm occurrence as an extracted alarm. , an alarm analysis unit that analyzes the extracted alarm and identifies the fault location based on the analyzed alarm. 2. In the alarm determination method according to claim 1,
The mask processing unit removes, as the predetermined information, unnecessary information according to the internal state and monitoring necessity state of the communication device and information that is generated derivatively according to changes in the alarm information. An alarm judgment method featuring: 3. In the alarm determination method according to claim 1,
The alarm determination method is characterized in that the alarm analysis section temporally corrects the analysis alarm and determines its change trend when identifying the fault location.