JPH0784637A - Alarm control processing device - Google Patents

Abstract

PURPOSE:To suppress the output of an unnecessary alarm, to reduce operator's load such as display check and buzzer setting and to output only an important alarm. CONSTITUTION:A signal input processing part 21 diagnoses an alarm state based upon the signal processing of plant input data and an initial alarm pattern previously set up in an input signal, and when a change in a signal state is generated, outputs a signal state storing command to a signal state time sequential management part 22, which detects alarm generation and recovery and timesequentially stores these signal states. An alarm generation frequency arithmetic unit 23 inputs an alarm generation frequency computing signal from the management part 22, computes alarm generation frequency, and when the frequency is more than a fixed value, outputs an alarm suppression diagnostic command to an alarm check arithmetic unit 24, which calculates time required from the generation of an alarm up to operators check, and when the time exceeds previously determined time, applies an alarm suppression request command to an alarm supressing part 25 to execute alarm suppression control processing. Alarm information suppressed by the suppressing part 25 is displayed on a CRT display device 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm control processing device in a process console which is positioned as a man-machine interface of a process control device for controlling and monitoring various plants such as a steel manufacturing plant, a food manufacturing plant and a pulp and paper manufacturing plant.

[0002]

2. Description of the Related Art Steel manufacturing plants, food manufacturing plants,
In various plants such as a pulp and paper manufacturing plant, the progress of the plant is generally monitored by a console with a CRT display device.

As a process console used for monitoring such a plant, there is one having a configuration as shown in FIGS. This process console includes a CRT display device 2, a keyboard 3, and a control unit 4 in a console unit 1 as shown in the figure. As shown in FIG. 7, the keyboard 3 is provided with a scroll key 5, a free allocation key 6, and a numeral input key 7.

When such a console with a CRT display device manages the progress of the plant and the like, an alarm is displayed when an abnormality occurs in the plant. This alarm display is preset. The occurrence and recovery status is displayed on the screen or printed out by the printer according to the alarm pattern.

Therefore, in the conventional alarm control processing device, when it is known in advance that a state similar to the abnormality of the plant is temporarily generated, such as when the plant is started up or shut down. The operator sets the alarm generation prohibition for each signal using the keyboard 3 and sets again a predetermined alarm pattern when the normal state is reached.

[0006]

However, in such a conventional alarm control processing apparatus, when the start-up or the stop-time of the plant is not known, the state is temporarily brought into a state similar to the abnormality of the plant. Therefore, there is a problem that alarm generation and recovery are repeatedly displayed, and display output and printout of alarm generation and recovery are performed in a short time even in a normal state due to fluctuations in input data.

Further, since the operator has to repeat troublesome operations such as display confirmation and buzzer reset for the alarm generation, there is a problem that the recognition of the important alarm generation becomes low.

The present invention has been made in view of the above-mentioned circumstances, does not output an unnecessary alarm, reduces the burden on the operator such as display confirmation and buzzer reset, and only an important alarm is issued. An object is to provide an alarm control processing device that can output.

[0009]

In order to achieve the above-mentioned object, the present invention diagnoses an alarm state based on a signal processing of plant input data and an initial alarm pattern preset for the input signal, and a signal state. Signal output processing means for outputting a signal state storing command when a change occurs in the signal state, and a signal state for storing alarms in a time series by detecting an alarm occurrence and recovery when the signal state storing command is input by the signal input processing means. A time series management means and an alarm occurrence frequency calculation means for taking in the signals managed by the signal state time series management means to calculate an alarm frequency and outputting an alarm suppress diagnostic command when the frequency is a certain value or more. When the alarm suppression diagnostic command is input from the alarm occurrence frequency calculating means, the time from the alarm occurrence to the operator confirmation is calculated, and the time is calculated from the predetermined time. When the alarm suppression request command is output, an alarm confirmation calculation unit that outputs an alarm suppression request command, an alarm suppression unit that executes an alarm suppression control process when an alarm suppression request input from the alarm confirmation calculation unit is input, and the signal state time series management And a CRT display device for displaying the diagnostic information of the signal state from the means and the alarm information that has been subjected to the alarm suppress processing by the alarm suppress means.

Further, in the above-mentioned alarm confirmation calculation means, when it is judged that the same alarm has been normally operated for a predetermined time or longer, an alarm suppression cancellation request command is given to the alarm suppression means.

[0011]

In the alarm control processing device having such a configuration, when the input signal changes, the signal state is stored in the signal state time series management means and history management is performed. The alarm occurrence frequency is calculated according to the signal change and the alarm occurrence frequency calculation means and the alarm confirmation time etc. are calculated by the alarm confirmation calculation means, and the alarm suppression processing and the alarm suppression cancellation processing are executed by the alarm suppression means. Since unnecessary alarms are not output, only important alarms can be output to the CRT display device, reducing the burden on the operator such as display confirmation and buzzer reset, and displaying only important alarms. Can be made.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration example of an alarm control processing device according to the present invention, which is realized by a software program incorporated in a control unit 4 in a process monitoring console shown in FIGS. 5 to 7 as a general layout. It shows the functions that are performed.

In FIG. 1, reference numeral 21 denotes a signal input processing unit to which plant data is input, and this signal input processing unit 21 performs signal processing of plant input data and an initial warning stored in a memory (not shown) for the input signal. An alarm state such as a major fault or a minor fault is diagnosed based on the pattern, and a signal state storage command is output when the signal state changes. Reference numeral 22 denotes a signal state time series management unit, which takes in the signal processed by the signal input processing unit 21 when a signal state storage command is input from the signal input processing unit 21 and issues an alarm. And the recovery are detected and stored in time series, and the CRT display device 28 is made to display the screen or the printer printing device 27 to make a printer output in response to a display from the CRT display device 28 or a print request. .

Further, reference numeral 23 is a signal state time series management section 22 for taking in the signal managed and calculating the alarm frequency,
When the frequency is equal to or more than a certain value, an alarm occurrence frequency calculation unit that outputs an alarm suppression diagnostic command, and 24 calculates the time from the alarm occurrence to the operator confirmation when the alarm suppression diagnostic command is input from the alarm occurrence frequency calculation unit 23. , An alarm confirmation calculation unit that outputs an alarm suppression request / alarm suppression cancellation request command, and 25 executes an alarm suppression control process when an alarm suppression request / alarm suppression cancellation request command input from the alarm confirmation calculation unit 24 is input. It is an automatic alarm suppression unit.

Further, reference numeral 26 indicates the diagnostic information of the signal state from the signal state time series management section 22 displayed on the CRT display device 28, the alarm suppress output from the automatic alarm suppress section 25, and the selection signal input from the keyboard 29. It is a CRT display control unit that controls the display of display information in the automatic suppression execution selection state.

As shown in FIG. 2, the keyboard 29 has an automatic suppress execution selection key 8 added to the conventional keyboard 3 shown in FIG. 7, and the automatic alarm suppression is operated by operating the automatic suppression execution selection key 8. The automatic suppression execution selection state of the section 25 can be selected.

Further, as shown in FIG. 3, the CRT display device 28 is provided with an automatic suppress selection state display portion 9 in addition to the conventional CRT display device 2 of FIG. The automatic suppress selection state executed by the alarm suppress unit 25 can be displayed.

Next, the operation of the alarm control processing device configured as described above will be described with reference to the flowchart shown in FIG. When data is input from the plant to the signal input processing unit 21, the signal input processing unit 21 performs signal input processing and reads an initial warning pattern for a preset input signal from a memory (not shown) (S
1), it is determined whether or not there is a change in signal state (S2),
When it is determined that the signal state has changed, a signal state storage command is output to the signal state time series management unit 22.

In the signal state time series management unit 22, a signal change or an alarm is issued according to a command from the signal input processing unit 21,
The recovery time, the signal name, the signal state, etc. are stored in time series in a memory (not shown). The information stored in this memory is displayed on the CRT display device 21 when a display or printing request is received from the CRT display device 21, or a print command is given to the printer printing device 27 to be output to a printer (S
3).

On the other hand, the alarm occurrence frequency calculation unit 23 takes in the information stored in the memory of the signal state time series management unit 22 and diagnoses whether the signal change state is an alarm occurrence or an alarm recovery. As a result, when an alarm is generated and the signal is not being suppressed, the alarm generation frequency is calculated from the count of the number of times the same alarm is repeatedly generated and recovered within a certain period of time and the time interval between alarm generation and recovery. .

As a result, the number of times of occurrence and recovery is repeated within a certain fixed time more than a certain number of times (parameter setting)
Then, when the time interval between occurrence and recovery is within a certain time (parameter setting), an alarm suppress diagnosis command is given to the alarm confirmation frequency calculation unit 24.

Further, in the case of alarm recovery, an alarm suppress release request is given to the automatic alarm suppress section 25 when there is no state change in the signal for repeating the generation and recovery of the same alarm within a certain fixed time, and it is not shown. The fact is stored in the memory (S4).

After that, when the same signal is input, the alarm occurrence frequency calculation unit 23 determines that an alarm is issued, and if the signal is during alarm suppression, no processing is performed. When an alarm suppression diagnosis command is given to the alarm confirmation frequency calculation unit 24 from the alarm generation frequency calculation unit 23, the alarm confirmation frequency calculation unit 24 diagnoses the time from the alarm generation to the operator confirmation, and this time is a fixed time ( Longer than the parameter setting) and if it is continuous, the automatic alarm suppression unit 25
A warning suppression request command is given to (S5).

When an alarm suppress request command is input to the automatic alarm suppress unit 25, a display signal to that effect is displayed on the CRT.
The output is displayed on the display unit 28, and the automatic suppression execution selection state is given to the automatic alarm suppression unit 25 from the keyboard 29.

In this case, the automatic suppression execution selection state is selected by the operator's operation in advance by the automatic suppression execution selection key 8 of the keyboard 29 shown in FIG. 2 and displayed on the display section 9 in the screen of the CRT display device 28 shown in FIG. Displayed as Auto suppress.

As described above, when the automatic suppress is selected for the automatic alarm suppress section 25 and the signal input processing device 21 has diagnosed that the initial alarm pattern of the signal is a minor failure, the automatic alarm suppress processing is automatically performed. The CRT display controller 26 outputs that the alarm suppression is being performed.

When the automatic suppress is not selected and when the signal input processing device 21 has diagnosed that the initial warning pattern of the signal is a serious failure, a warning suppression execution confirmation request is issued to the CRT display control device 28. The CRT display control device 2 displays that the alarm suppression process is performed by the operator confirming that the alarm suppression is in progress.
It outputs to 6 (S6, S7).

On the other hand, by the alarm suppression cancellation request command,
The automatic suppression execution selection state is input from the keyboard 29. At this time, if automatic suppress is selected,
The automatic alarm suppression release processing is automatically executed, and the fact that the alarm suppression is being released is output to the CRT display control device 28.

Further, when the automatic suppress is not selected, the alarm suppress execution confirmation request is displayed on the CRT display device 28, and the alarm suppress release processing is executed by the operator's confirmation, and the alarm suppress is being released. Is output to the CRT display controller 26 (S8, S9).

As a result, the CRT display controller 26
During the alarm suppression and the cancellation of the alarm suppression are automatically confirmed, and the alarm output and the recovery are displayed and output to the CRT display device 28 (S10).

As described above, according to the above-described embodiment, the alarm generation frequency and the alarm confirmation frequency are automatically calculated according to the change of the signal, and the alarm suppression and the alarm suppression cancellation processing are automatically executed. As described above, it is possible to solve the problem that an unnecessary alarm is output in a short time, and it is also possible to eliminate the troublesomeness that the operator has to confirm the display and the buzzer reset when the unnecessary alarm is generated. . Further, since only the important alarm is output without outputting the unnecessary alarm, the sensitivity of the operator to the alarm is increased and the process monitoring function can be improved.

[0032]

As described above, according to the present invention, unnecessary alarms are not output, the burden on the operator such as display confirmation and buzzer reset is reduced, and only important alarms are output. It is possible to provide an alarm control processing device.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an alarm control processing device according to the present invention.

FIG. 2 is a configuration diagram of a keyboard used in the embodiment.

FIG. 3 is a front view of a CRT display device used in the embodiment.

FIG. 4 is a flowchart for explaining the operation of the embodiment.

FIG. 5 is a front view of a process console used for plant monitoring.

FIG. 6 is a side view of the process console.

FIG. 7 is a configuration diagram of a keyboard of the process console.

[Explanation of symbols]

21 ... Signal input processing unit, 22 ... Signal state time series management unit, 23 ... Alarm generation frequency calculation unit, 24 ... Alarm confirmation calculation unit, 25 ... Automatic alarm suppression unit, 26 ... CRT display control unit , 27 ... Printer printing device, 28 ... CRT
Display device, 29 ... Keyboard.

Claims (2)

[Claims] 1. A signal input for diagnosing an alarm condition based on a signal processing of plant input data and an initial alarm pattern preset for the input signal, and outputting a signal condition storing command when a change occurs in the signal condition. Processing means, signal state time series management means for detecting alarm occurrence and recovery by inputting a signal state storage command by the signal input processing means, and storing in time series, and management by the signal state time series management means The alarm occurrence frequency calculation means that takes in the signal being output and calculates the alarm frequency, and outputs the alarm suppression diagnostic command when the frequency is a certain value or more, and the alarm suppression diagnostic command is input from this alarm occurrence frequency calculation means. Then, the time from alarm generation to operator confirmation is calculated, and when the time is longer than a predetermined time, an alarm suppression request command is output Means, an alarm suppress means for performing an alarm suppress control process when an alarm suppress request inputted from the alarm confirmation calculating means is inputted, and diagnostic information of the signal state from the signal state time series managing means and the alarm suppress. An alarm control processing device comprising: a CRT display device that displays alarm information that has been alarm suppressed by the means. 2. The alarm control processing device according to claim 1, wherein the alarm confirmation calculation means gives an alarm suppress release request command to the alarm suppress means when it is determined that the same alarm has been normally operated for a predetermined time or longer. An alarm control processing device characterized in that