JPS6051040A - Discriminating system of momentary trouble - Google Patents

Abstract

PURPOSE:To reduce burden of a supervisory system by judging it an ordinary trouble when time of trouble or number of times of troubles exceeds a set value within a specified time from occurrence of the trouble, and judging it as a momentary trouble when time of trouble and number of times of troubles is less than a set value within a specified time. CONSTITUTION:Trouble information inputted from a terminal 1 is compared with present state of trouble D1 stored in a memory 3 in a status change detecting section 2, and a trouble occurrence signal phi1 or a trouble restoration signal phi2 is sent to an intensive processing section 4. The intensive processing section 4 collates setting time Ts of a setting section 8 and trouble cumulative time of trouble Tn of a timer 6, and if Ts<Tn, it is judged as an ordinary trouble, and the result K1 of processing is outputted. Further, it collates number of times of setting of the setting section 8 and number of times of occurrence of troubles Cn of a counter 5, and if Ts<Tn, the result K1 is outputted as an ordinary trouble. When Ts, Cs are larger than Tn, Cn, it is judged as momentary trouble and the result K2 of processing is outputted.

Description

[Detailed Description of the Invention] The present invention generally relates to collecting and monitoring failure information of communication devices, etc.
In a monitoring system that monitors a communication system including a large number of communication terminal stations and relay stations, all failure information from each station is collected and monitored. This failure information includes not only failures caused by normal component defects, but also instantaneous failures instantaneously induced by external noise or the like. This instantaneous failure is rarely detected or recognized as a failure due to its short duration, so conventionally a delay circuit with a predetermined time constant is inserted into the failure information input circuit to completely eliminate this instantaneous failure. The method was adopted.

However, even if it is an instantaneous failure, if it occurs frequently or the total duration exceeds a certain value, it may be determined that it is a normal failure.

However, in the conventional method using a delay circuit, all pulse-like instantaneous failures are ignored, so such instantaneous failure states cannot be detected.

On the other hand, it is possible to consider a circuit configuration that can detect individual instantaneous failures, but in this case, because instantaneous failures often occur concentratedly and frequently within a certain period of time, all of the failure information is sent to the receiving side. Inputting information will greatly increase the load on the system, but it often does not have a negative impact on monitoring the original failure information or on other tasks.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an entire instantaneous fault identification method that can overcome these drawbacks and distinguish between instantaneous faults and normal faults.

The instantaneous failure identification method of the present invention includes a failure detection means that inputs all the failure information output from each device and detects the start of the failure and its recovery, and a failure detection means that detects the start of the failure and its recovery, and a first timer that measures time, a second timer that measures each failure time from start to recovery of each failure information input during the measurement time, and the failure information input during the measurement time. a counting means for counting all the number of failures, and when the failure time counted during the measurement time after the failure information is input is less than or equal to a set time, and the number of failures counted during the measurement time is less than or equal to the set number; and a determination processing means for determining an instantaneous failure.

The present invention will be explained in detail below with reference to the drawings. .

Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2(a) -
(h) is a waveform diagram showing the operation of FIG. 1; In the figure, 1 is an input terminal for failure information; 2 is a state change detection unit; 6 and 7 are timers for the deferred failure time Tn and the time To for counting instantaneous failures; and 8 is for distinguishing between all instantaneous failures. This is a setting section that sets the time TS and the number of times C5.

First, failure information input from terminal 1 (Figure 4 (a))
is compared in the state change detection section 2 with the current failure state stored in the storage section 3.

As a result of this comparison, the fault occurrence signal φ1 (Fig. 4(b)) is detected when the normal state changes to the fault state, and the fault recovery signal φ2 (Fig. 4(b)) when the fault state changes from the fault state to the normal state.
Figure 4 (C)) 'r ratio output. At the same time, the failure state Dxt? stored in the storage unit 3? State D2IIc after state change
Rewriting/aggregation processing section 4 starts timer 6 by setting fault occurrence signal φ1 and timer set signal 8AtON, and integrates fault time Tn, as shown in FIG. 4(e).

And as timer set signal 5BiON, timer 7
and count the time (Fig. 4(f)).

Here, the set time Ts of the setting unit 8 and the accumulated failure time Tn of the timer 6 are read and compared, and if the failure time Tn becomes longer than the set time Ts, it is determined that it is a normal failure, and the aggregation processing result is Fully output Kl and reset counter 2, timer 6, and timer 7. In addition, the failure recovery signal φ
2 causes the counter 5 to advance by 1 step when the counter step signal C (FIG. 4(d)
Turn AiOFF and stop all timer 6.

Next, the set number of times C8 of the setting section 8 and the number of failure occurrences (recovery) cn of the counter 5 are compared and compared for all readings, and even if the number of failures Cn is greater than the set number of times C5, it is determined to be a normal failure. , outputs the aggregation processing result Kl, and sets the counter 5.
．． Reset all timers 6 and 7. If the time over signal To is output from the timer 7 without any of these situations occurring (Fig. 4 (fl, fg+)), in this case it is determined that there is a momentary failure and 2 is output as the aggregation processing result (Fig. 4 (fl, fg+)). Figure 4(b)).

At the same time, counter 5. Reset timer 6 and timer 7.

Here, as an example of the setting section 8, as shown in FIG.
Assuming that the set number of times C, e5, the set time T, t-8 are set, and the failure time 11t-2, t, total 1, and t3 are 3, each step 81 to 8. Failure time Tn at
The relationship between Cn and the number of failures is shown in the following table.

That is, in steps 81 to S6, the set time T
3. Since the set number of times C8 is larger than the failure time Tn and the number of failures Cn, it is not judged as a failure, but when the time-over signal To is output in step S7#/c, it is judged as an instantaneous failure (in this example, To ``It's 15.''

This means that when a failure occurs and both the failure time and the number of failures are equal to or less than a set value, it is determined that it is an instantaneous failure. Note that in this specific S, if the set time T is set to =5, steps -85 and 8. Since the failure time Tn exceeds the set time Tsk between , , , , , 1 is taken out as an output for determining a normal failure at this time.

In other words, in the present invention, if either the failure time or the number of failures exceeds a set value within a predetermined time (To) after a certain failure occurs, it is determined that it is a normal failure; If the failure time and the number of failures are less than a set value within a predetermined period of time, the failure is determined to be an instantaneous failure and is distinguished from a normal failure.

As explained above, according to the present invention, it is possible to reduce the load on the monitoring system and understand the situation of instantaneous power outages, etc. by performing aggregation processing as instantaneous failures based on the number of occurrences of failures within a certain period of time and the time of occurrence. becomes possible.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2(a)
-(h) are waveform diagrams illustrating the operation of FIG. 1. In the figure, 1...fault information input terminal, 2...state change detection section, 3...storage section, 4...aggregation processing section, 5. ...Counter, 6.7...
...Timer, 8...Setting section. Figure 1 □ Figure 2

Claims (1)

[Claims] a failure detection means that inputs failure information output from each device and detects the start line of the failure and its recovery; a first timer that measures the entire predetermined measurement period after detecting the start of the failure information; a second timer for counting each failure time from the start to recovery of each failure information input during the measurement time; and a counting means for counting the number of failures of the failure information input during the measurement time. , determination processing means for determining an instantaneous failure when the failure time measured during the measurement time after the failure information is input is less than or equal to a set time and the number of failures counted during the measurement time is less than or equal to the set number; A method for identifying instantaneous failures, including