JPH1091485A - Alarm monitoring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an alarm monitoring device which sets the speed of alarm detection for plural independent alarm generation sources to be high. SOLUTION: When alarm information is received from alarm detection devices 1-1 to 1-n, CPU 4 stores alarm information in an alarm table 6 and retrieves the alarm table 6 by a hardware processing while communication control is executed with the alarm detection devices 1-1 to 1-n. A pointer showing the alarm generation order is provided for the content of the alarm table 6 and the alarm table 6 is retrieved only on an area from which an alarm is generated at present.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an alarm monitoring device, and more particularly to an alarm monitoring device such as a general-purpose computer system.

[0002]

2. Description of the Related Art The operation status of a system including a general-purpose computer system, a radar system, a line switching device, a communication control device, and the like is monitored by an alarm monitoring device.
In the case of management, conventionally, as shown in FIG. 3, the alarm detection device 1-1 included in each of the devices constituting the system is used.
When the alarm detection device group 1 configured by the alarm detection device 1 detects the occurrence or recovery of a system abnormality, the alarm detection device group 1 notifies the alarm monitoring device 2 of alarm information.

The alarm information is processed by a receiving circuit 5 and passed to a CPU 4 operated by a program 3. The CPU 4 analyzes the alarm information, and stores the alarm information at a corresponding position in the alarm table 6 as, for example, “1” if an abnormality occurs, and “0” if recovery is performed.

The CPU 4 searches all the stored contents of the alarm table 6 and obtains a comprehensive judgment result as to whether all the alarms are in a recovery state or whether one or more alarms have occurred. C
The PU 4 adds the generated or restored comprehensive judgment result to the alarm information received from the alarm detection devices 1-1 to n, notifies the alarm display unit 7, and notifies the alarm display unit 7
To display the alarm status.

However, in this case, the alarm table 6
There is a disadvantage that it takes time to calculate the presence / absence of an alarm because the CPU 4 searches for the entire contents of. CPU4
Is the alarm detection device 1-
The transmission and reception control with 1 to n is performed, and it is necessary to give priority to the communication control. In order to perform alarm processing at high speed,
There is a disadvantage that a faster CPU 4 is required.

In order to solve this problem, Japanese Patent Laid-Open Publication No.
No. 32857 proposes a method as shown in FIG. In FIG. 4, when no error has occurred,
The error detection section indication counter 21 generates a periodic signal a corresponding to the highest threshold value j that can be indicated by the selector 22. The holding circuit 24 holds the error information “b” during the detection section assuming that there is no error. At the same time as entering the next detection section, it passes the error signal “c” to the shift register 25, clears the held information and clears the current section. It is in the error holding waiting state.

When an error is detected during the detection section, the holding circuit 24 holds the error information b as an error during the detection section, and transfers the information to the shift register 25 upon entering the next detection section. , Clears the held information and enters the error holding waiting state in the current section. The shift register 25 shifts the error signal c from the holding circuit 24 on a detection section basis, and ANDs the parallel signals e1, e2, e3 of the threshold excess information held by the registers 25 for a specific number of stages (the number of protection stages).
, When an error is detected consecutively for three detection sections, a threshold excess alarm f is issued.

When a threshold excess alarm f is issued and when no error is detected consecutively for three detection sections, the threshold change counter 26 is cleared. If the error information does not continue for the number of protection steps during the protection period by the shift register 25, the error information is fed back to the input of the shift register 25 and the threshold value change counter 26 is counted up.

As a result, control is given to the selectors 22 and 23 to load the detection section instruction counter 21 with the offset value j corresponding to the protection period and generate the periodic signal a corresponding to the next lower threshold value. Similarly, when the threshold value is lowered and reaches a value set from outside, the threshold value change counter 26 is cleared by the comparator 27, thereby returning the threshold value to the maximum value.

[0010]

In the case of the conventional example shown in FIG. 4, continuous error information is classified into levels by threshold values. Therefore, although there is an effect when the number of error sources is one, if there are a plurality of independent error (alarm) sources, the speed of error (alarm) detection cannot be increased.

Further, in the case of the conventional example shown in FIG. 3, since the search in the alarm table is performed irrespective of whether or not an alarm is generated, the maximum search time is always required.

An object of the present invention is to provide an alarm monitoring device in which alarm detection for a plurality of independent alarm sources is accelerated.

[0013]

An alarm storing means for storing alarm information from an alarm detecting device of a system component according to the present invention, and a control for reading, processing and displaying the alarm information stored in the alarm storing means. An alarm monitoring device including a display unit, a scan clock generation unit that generates a scan clock that determines a time interval for searching for the alarm information stored in the alarm storage unit, and a table that provides a search address of the alarm storage unit. Address register means, table counter means for providing a count value for searching the alarm storage means, and alarm register means for accumulating and storing the alarm information searched from the alarm storage means.

[0014]

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

FIG. 1 is a block diagram showing the configuration of an embodiment of an alarm monitoring apparatus according to the present invention, and the same parts as those in FIG. 3 are denoted by the same reference numerals.

Referring to FIG. 1, an apparatus according to an embodiment of the present invention includes an alarm detecting apparatus group 1 for detecting a system abnormality of a system, and each alarm detecting apparatus 1 of the alarm detecting apparatus group 1.
And an alarm monitoring device 2 for processing alarms detected from 1 to 1-n. The device 2 includes a program 3 for controlling the operation of the alarm monitoring device 2,
, A receiving circuit 5 for receiving alarm information from the alarm detection device group 1, an alarm table 6 for storing alarm information, an alarm display unit 7 for displaying alarm contents, and a time for searching the alarm table. A scan clock generator 8 for determining an interval, a table address register 9 for giving a search address of the alarm table, a table counter 10 for giving a count value for searching the alarm table, and an alarm for accumulating and storing the contents searched from the alarm table. Register 1
1 and OR for accumulating the contents in the alarm register 11
A gate 15 is provided.

In FIG. 1, the alarm detecting devices 1-1 to 1-1
When n detects occurrence or recovery of a system abnormality, it notifies the alarm monitoring device 2 of alarm information. The alarm information is processed by the receiving circuit 5 and passed to the CPU 4. CPU4
Analyzes the alarm information and stores the alarm information as "1", for example, if an abnormality occurs, and "0", for example, for recovery via the address / data line 14 to the corresponding storage location in the alarm table 6.

The CPU 4 writes an initial value 0 as a search start address of the alarm table 6 into a table address register 9 which gives a search address of the alarm table 6, and searches all the alarm tables 6.
By writing the maximum number of pieces of alarm information stored in the alarm table 6 into the count value of the table counter 10, the preparation for searching the alarm table 6 is completed.

When the CPU 4 outputs a search start signal 13 for instructing the search clock generator 8 to start a search, the alarm register 11 for accumulating and storing the contents searched from the alarm table 6 is first cleared, and then the alarm table 11 is cleared. Reference numeral 6 sequentially reads the contents of the table address register 9 from address 0, and stores the contents of the alarm table 6 in the alarm register 11 via the gate 15.

When the scan clock is output from the scan clock generator 8 which determines the time interval for searching the alarm table 6, the table address register 9 stores +
1, the alarm table 6 reads the contents of the address 1. The logical sum of the contents stored in the alarm register 11 and the contents of the alarm table 6 at address 1 is calculated by the OR gate 15 and stored in the alarm register 11 again.

This operation is repeated every time the scan clock is output, and a table end signal (by countdown) 10 that gives a count value for searching the alarm table 6 outputs a search end signal (all alarm tables 6 have been searched). Repeat until output, CP
Notify U4.

The CPU 4 reads the contents of all the alarms from the alarm register 11, calculates the alarm information of the alarm detection device that has generated / restored, and the overall judgment result, notifies the alarm display unit 7, and displays the alarm state. .

FIG. 2 shows another embodiment of the present invention.

In FIG. 2, the same parts as those in FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted. 1 will be described. An alarm occurrence number storage buffer 17 for counting the number of alarms received from the alarm detection device group 1 and a final alarm number storage buffer 16 for storing the last generated alarm number are added. I have.

The contents of the alarm table 6 include two pointers, AFTER pointer, BEFORE pointer, alarm presence information,
Group information in which the alarm number means grouping unique to the device is stored.

In FIG. 2, the contents of the alarm table 6 are represented by two pointers indicating the order of occurrence of alarms, namely, an AFTER pointer 6-4 and a BEFORE pointer 6-3, alarm presence / absence information 6-1 and an alarm number. The alarm information is divided into the group information 6-2 by the unique grouping, and the alarm monitoring device 2 and the alarm detection devices 1-1 to n
When the power is turned on, the alarm table 6 stores the grouped number corresponding to each alarm number in the group information 6-2, and the alarm presence / absence information 6-1 and A
FTER pointer 6-4, BEFORE pointer 6-3
Is cleared.

When an alarm is first detected, when the alarm occurrence number storage buffer 17 is "0", it is the first alarm detection, and the AFTER pointer 6-4 / BEFOR
The E pointer 6-3 writes a value greater than the existing alarm number by +1 or more to indicate that there is no contact.
The number of alarm occurrences storage buffer 17 is incremented by 1, and the received alarm number is written to the final alarm number storage buffer 16.

The CPU 4 stores the contents of the alarm occurrence number storage buffer 17 in the table counter 10 and the contents of the last alarm number storage buffer 16 in the table address register 9, and outputs an alarm search start signal 13. When the alarm register 11 is cleared and the scan clock 8 is output, the contents of the alarm table 6 are read and accumulated in the alarm register 11 and stored.

When the scan clock 8 is output, the table counter 10 is decremented by one, and when it becomes "0", an alarm search end signal 12 is output and notified to the CPU 4. C
The PU 4 reads the alarm register 11, knows the overall judgment result of the alarm occurrence for each group number, notifies the alarm display unit 7, and displays the alarm state.

When the second and subsequent alarms are detected, the alarm occurrence number storage buffer 17 is "1" or more, and when an alarm occurrence is received, the corresponding alarm table 6
Is written in the alarm presence / absence information 6-1. The BEF of the alarm table 6 corresponding to the alarm number stored in the last alarm number storage buffer 17 until then.
The currently received alarm number is written to the ORE pointer 6-3.

Further, the AFTER pointer 6-4 of the alarm table 6 corresponding to the alarm number received this time has
Write the contents of the final alarm number storage buffer 16,
Link with the pointer in the past alarm table 6. The final alarm number storage buffer 16 updates the alarm number received this time and increments the alarm occurrence number storage buffer 17 by one.

The CPU 4 stores the contents of the alarm occurrence number storage buffer 17 in the table counter 10 and the contents of the last alarm number storage buffer 16 in the table address register 9, and outputs an alarm search start signal 13. When the alarm register 11 is cleared and the scan clock 8 is output, the contents of the alarm table 6 are read out and accumulated in the alarm register 11,
The table counter 10 is decremented by one.

At this time, the contents of the AFTER pointer 6-4 read out are stored in the table address register 9. When the next scan clock 8 is output, AF
Alarm table 6 linked by TER pointer 6-4
Is read out, and the alarm register 11 is accumulated. When the table counter 10 is decremented by 1 and becomes "0", an alarm detection end signal 12 is outputted and notified to the CPU 4.

The CPU 4 notifies the alarm display section 7 of the contents of the alarm register 11 and displays the status. Similarly, when an alarm occurrence is received thereafter, AFTER
The alarm table 6 is updated and searched while the pointer 6-4 / BEFORE pointer 6-3 is connected.

Next, when an alarm recovery is received from the alarm detectors 1-1 to n, the alarm presence / absence information 6-1 of the address of the alarm table 6 corresponding to the alarm number is received.
Is set to "0", and the contents of the BEFORE pointer 6-3 are overwritten on the BEFORE pointer 6-3 of the alarm number indicated by the contents of the AFTER pointer 6-4.

The AFTER pointer 6- of the address of the alarm table 6 corresponding to the received alarm number
4 is overwritten on the AFTER pointer 6-4 of the alarm number indicated by the BEFORE pointer 6-3.
If the BEFORE pointer 6-3 is larger than the existing alarm number, there is no link destination and the alarm has occurred last, so the AFTER pointer 6-4 is overwritten in the last alarm number storage buffer 16. Further, the alarm generation number storage buffer 17 is decremented by one, and the connection of the past alarm information is terminated.

The CPU 4 stores the contents of the alarm occurrence number storage buffer 17 in the table counter 10 and the contents of the last alarm number storage buffer 16 in the table address register 9 and outputs the alarm search start signal 13. When the alarm register 11 is cleared and the scan clock 8 is output, the contents of the alarm table 6 are read and accumulated in the alarm register 11 and stored.

At this time, the contents of the AFTER pointer 6-4 read out are stored in the table address register 9. When the scan clock 8 is output, AFTE
The alarm table 6 linked by the R pointer 6-4 is read, and the alarm register 11 is accumulated. When the table counter 10 is decremented by 1 and becomes "0", an alarm detection end signal 12 is outputted and notified to the CPU 4.

The contents of the alarm register 11 are notified to the alarm display section 7 to display the status. Thereafter, in the same manner,
When the alarm recovery is received, the AFTER pointer 6
The alarm table 6 is updated and searched while connecting the -4 / BEFORE pointer 6-3.

Conventionally, a search in the alarm table 6 is performed by
Since the search is performed by the CPU 4 in the program processing, the search time is limited to the alarm table access performance of the CPU 4 and the number of steps. For example, if the average execution clock of the CPU is 1 instruction 6 clocks and 1 alarm table processing step 5 steps, The search time when n alarms are detected requires 6 × 5 × n hours. In the case of the present invention, if a storage element that can be read by one CPU clock is used, n hours are required, and the speed can be increased 30 times.

[0041]

As described above, according to the present invention, by outputting the scan clock in accordance with the access performance of the storage element, the retrieval time can be reduced to the performance of the storage element constituting the alarm table. In addition, since the pointers where the alarms are generated are connected and the search is performed using only the alarm table where the alarms are generated, the search time can be shortened.

Since the calculation of the pointer is performed by moving to the register by hardware, arithmetic time by concatenation is unnecessary.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a block diagram of another embodiment of the present invention.

FIG. 3 is a block diagram of an example of a conventional alarm monitoring device.

FIG. 4 is a block diagram of another example of the conventional alarm monitoring device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 alarm detection device group 1-1 to n alarm detection device 2 alarm monitoring device 3 program 4 CPU 5 reception circuit 6 alarm table 7 alarm display section 8 scan clock generator 9 table address register 10 table counter 11 alarm register 12 search end signal 13 Search start signal 14 Address / data line 15 Gate

Claims (4)

[Claims] 1. An alarm monitor comprising: an alarm storage unit for storing alarm information from an alarm detection device of a system component; and a control display unit for reading, processing, and displaying the alarm information stored in the alarm storage unit. An apparatus, a scan clock generating means for generating a scan clock for determining a time interval for searching for the alarm information stored in the alarm storage means, a table address register means for providing a search address of the alarm storage means, An alarm monitoring apparatus, comprising: a table counter for providing a count value for searching the alarm storage; and an alarm register for accumulating and storing the alarm information searched from the alarm storage. 2. The apparatus according to claim 1, further comprising pointer search means for simultaneously storing pointer information indicating a storage order of said alarm information stored in said alarm storage means, and determining a search order in accordance with said pointer information. Alarm monitoring device. 3. The AFTE wherein the pointer information indicates the search address of the alarm information stored immediately before.
3. The alarm monitoring device according to claim 2, comprising an R pointer and a BEFORE pointer indicating the search address of the alarm information stored immediately after. 4. The alarm monitoring apparatus according to claim 2, wherein a search end signal is derived based on the BEFORE pointer and notified to the control display means.