JP2004086338A - Alarm control processing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically perform alarm suppression processing/alarm suppression release processing and to suppress an alarm which is not so important in starting or finishing a plant. <P>SOLUTION: An alarm control processing apparatus is provided with a means performing the suppression processing on a light alarm with a prescribed condition, predicting a restoration processing for a serious alarm and giving an instruction to an operator. A learning means automatically learns the restoration processing for the serious alarm, and an alarm condition is automatically created. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a process console positioned as a man-machine interface of an alarm control processing device, particularly a process control device for controlling and monitoring various plants such as a utility monitoring control plant, a steel manufacturing plant, a food manufacturing plant, and a pulp and paper manufacturing plant. And an alarm control processing device.
[0002]
[Prior art]
In various plants, the operating status of the plant is generally monitored by an operator through a CRT display device on a console.
[0003]
As shown in FIG. 5, the process console 1 used for monitoring such a plant includes a CRT display device 2, a keyboard 3, a control unit 4, and a printer 5 as necessary. As illustrated in FIG. 6, the keyboard 3 is provided with a scroll key 6, a freely assigned key 7, a numeric keypad 8 and the like.
[0004]
One function managed by such a console with a CRT is an alarm display. The warning is displayed on the CRT display device 2 on the screen of the occurrence / recovery state of the abnormal state, printed out by the printer 5 as necessary, and further, a buzzer (not shown) according to a preset warning pattern. Or sounding.
[0005]
By the way, when the plant is started (at startup) or at the time of shutdown (at shutdown), the data signal to be monitored fluctuates greatly, so that an unnecessary alarm is generated, for example, as disclosed in JP-A-11-85265. In order to prevent the alarm from being issued, the operator sets an alarm generation prohibition through the keyboard 3 so as not to generate an alarm for a normal data signal fluctuation. It is set to be a pattern.
[0006]
[Problems to be solved by the invention]
Since the alarm control processing setting method in such a conventional display device relies on an operator's setting operation, it is unavoidable that an alarm occurrence / recovery is repeatedly displayed at the time of starting up or shutting down the plant. Even in a steady state, alarm generation / recovery of the same content may be repeated in a short time due to data fluctuation or the like. As described above, in the processing method at the time of alarm generation, regardless of whether the generated alarm is an unnecessary alarm or a necessary alarm, display and output of the alarm occurrence / recovery, printout, and buzzer output are performed. Or there is a problem that In such a case, the operator confirms the display of the alarm and resets the buzzer, and also has to repeat troublesome tasks such as promptly conducting investigation of the cause and recovery operation. There was a problem that became gradually dull.
[0007]
The present invention has been made in consideration of such a conventional problem, and automatically executes alarm suppression processing and alarm suppression cancellation processing even when starting up or shutting down a plant, so that it is not so important. It is an object of the present invention to provide an alarm control processing device capable of effectively suppressing an unwarranted alarm.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, an alarm control processing device according to the first aspect of the present invention performs a signal input process of plant data, and determines whether an input signal is in an alarm state based on a preset initial alarm pattern. Signal input processing means for outputting a signal state storage command when a change occurs in the signal state, and detecting an alarm occurrence and alarm recovery when a signal state storage command is input from the signal input processing means. A signal state time series managing means for storing and managing the series, and a signal managed by the signal state time series managing means, taking in the signal and recognizing the initial alarm pattern at the time of the same alarm occurrence and recovery, and performing the time series of alarm occurrence recovery. By learning the transition, an alarm suppression request processing means for processing an alarm suppression request for an alarm generated within a certain deviation, The period alarm pattern as well as automatic change, characterized by comprising a warning issuing recovery learning calculation means for learning and storing a manipulation operations and state transitions to recover from the alarm.
[0009]
According to a second aspect of the present invention, in the alarm control processing device according to the first aspect, a cause alarm is clarified and recovered from a signal managed in a time series by the signal state time series managing means, based on an alarm occurrence and an occurrence time. Means for automatically predicting the operation; and alarm generation prediction calculation means for performing an alarm generation simulation by automatically recognizing the learning result of the alarm generation recovery learning calculation means and the plant flow. Further, the alarm suppression request processing means includes a signal state time series. The present invention is characterized in that a signal managed by the management means is taken in, and a secondary alarm generated due to an abnormality is automatically predicted based on a result learned by the alarm generation recovery learning means, and an alarm suppression request is processed.
[0010]
According to a third aspect of the present invention, in the alarm control processing device according to the second aspect, the alarm suppression request processing means includes an automatic alarm suppress / automatic alarm suppress output from the alarm occurrence recovery learning operation means and the alarm occurrence prediction operation means. Guidance of recovery operation operation predicted by the alarm generation recovery learning calculation means by performing alarm suppression and alarm suppression cancellation for the signal requested by the cancellation request, suppressing unnecessary alarms and generating important alarms preferentially Is displayed on a display device.
[0011]
In the alarm control processing device according to the present invention, the signal state is stored in time series by the signal state time series management means in order to manage the history based on the change of the signal, and the CRT display and the printer apparatus receive the display / print request from the CRT display apparatus. Perform printing. Also, by automatically recognizing the result of the learning and the plant flow by the alarm generation recovery learning calculation means, an alarm generation simulation is performed in response to a request from the CRT display device.
[0012]
In addition, the transition of the alarm occurrence, the secondary alarm occurrence prediction, and the recovery operation guidance prediction are automatically calculated by the arithmetic means according to the signal change, and the alarm suppress processing and the alarm suppress cancel processing are executed by the alarm suppress request processing means.
[0013]
In this way, the alarm suppression / alarm suppression canceling processing is automatically performed according to the signal change so that unnecessary alarms are not output, and only important alarms are output to the CRT display device and the printer.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0015]
FIG. 1 is a block diagram showing a configuration example of an alarm control processing device according to the present invention. FIG. 1 is a block diagram showing functions realized by a software program incorporated in the control unit 4 in the process console 1 for monitoring a process shown in FIGS. 2 and 3 show a keyboard 3 and a CRT display device 2 used in the present invention. FIG. 4 is a flowchart showing a schematic operation relating to an operation of software operated by the control unit 4 according to the present invention.
[0016]
As shown in FIG. 2, the keyboard 13 according to the present invention has an automatic suppression execution selection key 9 added to the keyboard 3 shown in FIG. 6, and as shown in FIG. A display window 10 for displaying a selected state is provided.
[0017]
As shown in FIG. 1, the alarm control processing device of this embodiment includes a signal input processing unit 21, a signal state time series management unit 22, an alarm occurrence recovery learning operation unit 23, an alarm occurrence prediction operation unit 24, an alarm suppression request process. Means 25, and a CRT display device 26 with a CRT display control device. The alarm suppression request processing means 25 performs alarm suppression control processing in response to an alarm suppression request / alarm suppression cancellation request. The alarm occurrence recovery learning operation means 23 automatically learns the alarm occurrence transition in time series in order to output an alarm suppression request / alarm suppression cancellation request to the alarm suppression request processing means 25. The alarm generation predicting / calculating means 24 predicts a secondary alarm generated due to a device failure or the like based on the result learned by the alarm generating learning / calculating means 23, further predicts a recovery operation guidance, and generates an alarm generation / recovery learning calculating means 23. The alarm generation simulation is performed by the automatic recognition of the learning result and the plant flow. The signal state time series management means 22 detects an alarm occurrence / recovery based on the plant data, stores the detected alarms in a time series, and executes a screen display / printer output in response to a display request or a print request from the CRT display device 26. The signal input processing means 21 diagnoses an alarm condition based on input data from the plant, and sets an initial alarm pattern for the input signal in advance. The printer 27 performs printing in response to a printer print request.
[0018]
The operation of the alarm control processing device having the above configuration will be described.
[0019]
As shown in the flowchart of FIG. 4, the signal input processing means 21 performs the processing of the plant input data, that is, the signal input processing, reads the preset initial alarm pattern for the input signal, and the signal state changes. In this case, a signal state storage command is output to the signal state time series management means 22 (steps S1 and S2).
[0020]
The signal state time series management unit 22 stores the time of signal change or alarm occurrence / recovery, the signal name, the signal state, and the like in a time series according to the signal state storage command from the signal input processing unit 21. Further, in response to a display request / print request from the CRT display device 26, the stored signal state is displayed on the CRT display device 26 by CRT and printed out by the printer 27 (step S3).
[0021]
The alarm occurrence recovery learning operation means 23 monitors the transition of the input data stored in the signal state time series management means 22 in time series, and performs the alarm generation or the alarm recovery for the alarm set value set in time series. Learn diagnostics. If the same alarm is repeatedly generated and recovered within a certain deviation from the alarm set value at the time of alarm generation and alarm recovery, the count value and time interval of the number of times the alarm repeatedly generates and recovers within a certain time Automatically learn the deviation from the alarm set value and the recovery operation from the occurrence to recovery and the state transition. Further, when an alarm is generated, after the generation of a certain alarm, the order of generation and recovery and the number of times of generation and recovery are automatically learned for a plurality of alarms generated within a certain period of time.
[0022]
As a result, for input data generated and recovered within a certain deviation from the alarm set value set in chronological order, the number of times the generation and recovery is repeated within a certain time is equal to or more than a predetermined number (parameter setting). In addition, when the time interval between occurrence and recovery is within a predetermined time (parameter setting), an alarm suppress command is output to the alarm suppress request processing means 25 and the alarm set value is automatically changed. In the case of alarm recovery, when there is no change in the state of the signal that repeatedly generates and recovers the same alarm within a certain period of time, an alarm suppress cancellation command is output to the alarm suppress request processing means 25 (step S4).
[0023]
The alarm occurrence predicting / calculating means 24 diagnoses an alarm generated due to a device failure or the like in the order of occurrence / recovery of the alarm and the number of times of occurrence / recovery of the alarm within a certain period of time. A cause alarm, a secondary alarm, and a recovery operation guidance are automatically predicted from the occurrence / recovery order and the number of occurrences / recovery, and an alarm suppress command is output to the alarm suppress request processing means 25 for the secondary alarm ( Step S5).
[0024]
The alarm suppression request processing means 25 inputs an automatic suppression execution selection state from the keyboard 13 in response to an alarm suppression request command from the alarm occurrence prediction calculation means 24. The automatic suppression execution selection state is previously selected by the operator using the automatic suppression selection key 9 on the keyboard 13, and “automatic suppression” is displayed in the automatic suppression selection state display window 10 of the CRT display device 26. When automatic suppression is selected and the initial alarm pattern of the signal is a light alarm, the automatic alarm suppression processing is automatically performed, and the fact that an alarm suppression command is being issued is output to the CRT display control device 26. When the automatic suppression is not selected and when the initial alarm pattern of the signal is a serious failure, an alarm suppression execution confirmation request is displayed on the CRT display device 26, and the alarm suppression processing is executed by the operator's confirmation. Then, the fact that alarm suppression is being performed is output to the CRT display control device 26 (steps S6 and S7).
[0025]
An automatic suppression execution selection state is input from the keyboard 13 in response to a command for a warning suppression release request. When the automatic suppression is selected, the automatic alarm suppression canceling process is automatically performed, and the alarm suppression cancellation is commanded to the CRT display control device 26. When the automatic suppression is not selected, an alarm suppression execution confirmation request is displayed on the CRT display device 26. Upon confirmation of the operator, the alarm suppression canceling process is executed, and the alarm suppression cancellation is instructed to the CRT display control device 26. Output (Steps S8, S9).
[0026]
Further, at the time of alarm display, a recovery operation guidance display request learned / predicted by the alarm occurrence recovery learning operation means 23 and the alarm occurrence prediction operation means 24 is commanded to the CRT display control device 26 (steps S10, S11). As a result, the CRT display control device 26 automatically recognizes that alarm suppression is in progress / warning suppression is cancelled, and outputs a warning generation / recovery and recovery operation guidance to the CRT display device 26 (step S12).
[0027]
As described above, according to this embodiment, even when the plant is started up or shut down, the alarm suppression processing / alarm suppression cancellation processing is automatically performed, and only the important alarms that are truly necessary are output. It is possible to provide an alarm control processing device.
[0028]
Furthermore, this embodiment can automatically change the initial alarm pattern within a certain deviation. By the signal change, the initial alarm pattern and the alarm occurrence recovery state for the signal are automatically recognized, and the transition of the alarm occurrence recovery can be learned and predicted in time series.
[0029]
As described above, according to this embodiment, the transition of the alarm occurrence recovery is learned and predicted in a time series according to the signal change, and the alarm suppression / alarm suppression canceling process can be automatically performed. Automatically changes within a certain deviation, eliminating the problem of unnecessary alarms being output in a short time.Also, the operator can confirm the display of unnecessary alarms, reset the buzzer, and reset the alarm settings. The inconvenience of having to perform a change operation or the like can also be eliminated. Also, since only important alarms are output without outputting unnecessary alarms, and the cause of the alarm and the recovery operation guidance can be displayed, the sensitivity of the operator to the alarms is increased and the process monitoring function is improved. Also, operability can be improved.
[0030]
In addition, by automatically recognizing the learning result and the plant flow of the alarm generation recovery learning operation means 23, an alarm generation simulation can be executed in response to a request from the CRT display device 26, and the operator can be trained on the generation of an alarm. Operation can be improved.
[0031]
【The invention's effect】
As described above, according to the present invention, it is possible to learn and predict the transition of alarm occurrence recovery in a time series based on a signal change, automatically execute alarm suppression / alarm suppression cancellation processing, and furthermore, perform an initial alarm. Automatically change the pattern within a certain deviation to eliminate the problem that unnecessary alarms are output in a short time.Also, when starting up or shutting down the plant, alarm suppression processing / alarm suppression cancellation processing It can be performed automatically and effectively suppress less important alarms.
[Brief description of the drawings]
FIG. 1 is a functional block diagram showing an embodiment of an alarm control processing device according to the present invention.
FIG. 2 is an exemplary plan view of a keyboard used in the embodiment;
FIG. 3 is a front view of the CRT display device used in the embodiment.
FIG. 4 is a flowchart for explaining the operation of the embodiment.
FIG. 5 is a conceptual diagram of a process console used in a conventional plant monitoring device.
FIG. 6 is a plan view of a keyboard of the process console.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Process console 2 CRT display device 3 Keyboard 4 Control unit 5 Printer 6 Scroll key 7 Free assignment key 8 Numeric input numeric keypad 9 Automatic suppression selection key 10 Automatic suppression selection status display window 12 CRT display device 13 Keyboard 21 Signal input processing means 22 Signal State time series management means 23 Alarm occurrence recovery learning operation means 24 Alarm occurrence prediction operation means 25 Alarm suppression request processing means 26 CRT display device with CRT display control device 27 Printer printing device 28 Keyboard

Claims (3)

A signal input for performing a signal input process of plant data, diagnosing whether or not the input signal is in an alarm state based on a preset initial alarm pattern, and outputting a signal state storage command when a change occurs in the signal state. Processing means;
Signal state time series management means for detecting an alarm occurrence and alarm recovery when the signal state storage command is input from the signal input processing means and storing and managing the time series,
By taking in the signal managed by the signal state time series management means, recognizing the initial alarm pattern when the same alarm is generated and recovering, and learning the transition of the alarm generation and recovery in time series, the signal is generated within a certain deviation. An alarm suppress request processing means for processing an alarm suppress request for the alarm;
An alarm control processing device, comprising: an alarm generation recovery learning calculating means for automatically changing the initial alarm pattern when the alarm suppression is requested, and learning and storing operation operations and state transitions from generation of an alarm to recovery. Means for clarifying the cause alarm by the alarm occurrence and time of occurrence from the signal managed in time series by the signal state time series management means and automatically predicting the recovery operation, and the learning result of the alarm occurrence recovery learning calculation means. Alarm occurrence prediction calculation means capable of performing an alarm occurrence simulation by automatic recognition of a plant flow,
Further, the alarm suppression request processing means automatically takes in a signal managed by the signal state time series management means, and automatically predicts a secondary alarm caused by an abnormality based on a result learned by the alarm occurrence recovery learning means. 2. The alarm control processing device according to claim 1, wherein the alarm control request is processed. The alarm suppression request processing means performs alarm suppression and alarm suppression cancellation on a signal requested by the automatic alarm suppression / automatic alarm suppression cancellation request output from the alarm occurrence recovery learning operation means and the alarm occurrence prediction operation means. The method according to claim 2, wherein an unnecessary alarm is suppressed, an important alarm is preferentially generated, and guidance of a recovery operation operation predicted through the alarm generation recovery learning calculation means is displayed on a display device. Alarm control processor.

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