JPH1185265A - Suppression control processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically perform an alarm suppressing process and to securely output an alarm only in the case of a fault by providing a suppression cause storage part, etc., where cause item data on objects of suppression processing are described. SOLUTION: A signal input process part 11 sequentially select respective measurement and monitor points of a plant to input plant state signals. An input signal state judgement part 12 compares plant state signals of the respective points with predetermined alarm judgement data and extracts judgement result data needed for alarm generation, alarm recovery or the like, and a judgement result data storage part 15 stores the judgement result data. In a suppression cause storage part 17, cause item data as objects of suppression processing are described by the points. When the judgement result data matches the cause item, a suppression judgement control part 18 outputs a suppression request signal and an automatic alarm suppression device 19 performs alarm suppression processing to automatically evade unnecessary alarm generation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suppression control processing apparatus used for monitoring and controlling various plants such as a steel plant, a food plant, and a pulp and paper plant.

[0002]

2. Description of the Related Art Generally, a process console used for monitoring and controlling various plants monitors and controls the operation status of the plant while repeating an automatic or manual operation based on a monitoring result by a console equipped with a CRT. Has been done.

In this process console, a CRT display device 102 and a keyboard 103 are attached to a console section 101 as shown in FIG. 6, while a control section 104 for controlling a plant is provided inside the console section 101. . It should be noted that a scroll key 105, a free assignment key 106, a numeric input numeric keypad 107 and the like are arranged on the keyboard 103.

Conventionally, a monitoring control processing apparatus applied to a process console or the like as described above has upper and lower limit value patterns set in advance, and compares a plant state signal input from the outside with upper and lower limit value patterns. When the plant status signal exceeds the upper / lower limit pattern, an alarm is displayed on the CRT screen. When the plant status signal enters the upper / lower limit pattern, an alarm recovery is displayed on the CRT screen. In response, the alarm generation and alarm recovery are printed out from the printer.

Conventionally, from the viewpoint of avoiding unnecessary alarms as much as possible, when it is known that an unnecessary alarm is generated at the time of starting or shutting down the plant, the operator prohibits the generation of alarms for various signals from the keyboard 103. Is set, and when returning to a normal plant operation state or the like, a predetermined upper / lower limit pattern is set again.

[0006]

Therefore, in the above-described monitoring and control processing apparatus, when the state of the plant is not known in advance, or when there is no alarm generation prohibition setting function, when the plant is started up or started up. When the alarm is lowered, the alarm generation and the alarm recovery are repeatedly displayed, and even in the normal operation state, the same alarm generation and the alarm recovery are repeatedly displayed in a short time due to the fluctuation of the plant state signal or the like. This has a problem that, as a process at the time of alarm generation / alarm recovery, the alarm generation / alarm recovery is displayed on the screen and printed out irrespective of unnecessary alarms or important alarms. Note that the same alarm means an alarm that repeats alarm generation and alarm recovery based on the same cause.

Further, the operator needs to perform operations such as display confirmation and buzzer reset every time an alarm is generated.
There is a problem that it is very complicated and that the cause of the alarm has to be clarified.

Furthermore, since the occurrence of an alarm and the recovery of an alarm are determined according to predetermined upper / lower limit value patterns, there is a problem that the sensitivity to the occurrence of an important alarm is reduced. The present invention has been made in view of the above circumstances, and provides a suppress control processing device that automatically performs an alarm suppress / alarm suppress release process and can output an alarm only when necessary trouble occurs. is there.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention compares a plant state signal at each point with predetermined alarm judgment data to generate an alarm, recover an alarm, and clarify an alarm cause. Input signal state determining means for extracting necessary determination result data, determination result data storage means for storing determination result data for each point of the input signal state determining means, and cause items to be suppressed in advance for each point When the judgment result data of the judgment result data storage unit matches the cause item of the suppression cause storage unit in response to the occurrence of a warning of a plant state signal at a certain point, a suppression request is issued. A suppression determination control means for outputting a signal, and a suppression for a warning of a plant state signal at a certain point. When receiving the demand signal is obtained by providing an automatic alarm suppression apparatus for carrying out the alarm suppression processing.

By taking such means, the input signal state judging means compares the plant state signal at each point with the alarm judgment data, and when it is judged that an alarm has occurred, an alarm is generated, an alarm is recovered, and other alarm causes are clarified. The judgment result data necessary for e.g. the elapsed time after the start-up of the device, the time until the alarm recovery after the judgment of the alarm occurrence, the number of alarm occurrence repetitions within a predetermined time, etc. are extracted and stored in the judgment result data storage means for each point. I do.

Then, the suppression judgment control means compares the judgment result data of the point relating to the generation of the alarm in the judgment result data storage means with the cause item data to be suppressed for each point in advance. If so, a suppress request signal is output, a suppress process is performed for the generation of an alarm, and unnecessary generation of an alarm is automatically avoided.

Another invention compares a plant state signal at each point with predetermined alarm judgment data,
An input signal state judging means for extracting judgment result data necessary for alarm generation and alarm recovery and other elucidation of an alarm cause; a judgment result data storage means for storing judgment result data for each point of the input signal state judging means; For each point, cause item data to be subjected to suppression processing is described, and for each of these cause item data, a suppress cause storage unit having an area for whether or not suppression is necessary, and for the occurrence of a warning of a plant state signal at a certain point, When the determination result data of the determination result data storage unit matches the cause item of the suppression cause storage unit, and the suppression necessity data is set in the suppression necessity existence area, the suppression request signal is output. Judgment control means and a suppressor Means for executing an alarm suppression process when receiving a request signal and displaying the relevant cause item data, and re-confirming the necessity of the suppression for the relevant cause item data based on the display result and changing the setting of this presence / absence And means for prompting the user.

By taking such measures, the judgment result data is compared in advance with the cause item data to be suppressed for each point, and when there is a matching cause item data, the data is subjected to the suppression process. When there is a setting that requires suppression in the cause item data in the area where suppression is necessary, suppression processing is performed for alarm generation, so selection is made based on the setting that needs suppression based on the knowledge and experience of the operator. Suppressing process can be carried out in advance, and when alarm suppressing process is carried out, cause item data is displayed and reconfirmation is prompted,
Whether or not suppression is necessary can be set while judging the state of the plant thereafter.

Further, another invention is characterized in that, when a new alarm is generated for the plant state signal at a certain point from the input signal state determining means, the constituent elements of the two inventions are newly added.
As long as there is no suppression request signal from the suppression determination control means, an alarm generation control means for directly generating an alarm is provided.

By taking such means, when there is no suppress request signal from the suppress determination control means, an alarm generation process is performed for the generation of an alarm, and if there is a suppress request signal, the alarm generation process is stopped. Accordingly, an alarm can be reliably generated only for a necessary failure.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a functional block diagram showing an embodiment of the apparatus of the present invention, and FIG. 2 is a schematic configuration diagram showing the external appearance of a process console.

First, in the process console, as shown in FIG. 2, a CRT display device 2 and a keyboard 3 are provided in a console main body 1 and an automatic suppression state display window 4 is displayed on a display screen of the CRT display device 2. .

On the other hand, an automatic suppression selection key 8 is arranged on the keyboard 3 in addition to a scroll key 5, a free assignment key 6, and a numeric input numeric keypad 7. Incidentally, the process console is provided with a suppress control processing device as shown in FIG.

This suppression control processing device is provided with a signal input processing unit 11 for sequentially selecting each measurement / monitoring point of a plant and taking in a plant state signal. The plant state signal taken in here is a point NO or a signal name ( (Hereinafter referred to as point NO.) Together with the input signal state determination unit 12.

The input signal state determination section 12 includes a time series data storage section 13, an alarm determination data storage section 14, and a determination result data storage section 15. The input signal state determination unit 12 compares the plant state signal for each point NO with the alarm determination data stored in advance in the alarm determination data storage unit 14 to detect the occurrence and recovery of an alarm, and to determine that an alarm has occurred. When each point is NO
While the plant state signal is stored in the time-series data storage unit 13 in time series for each time, for example, point NO, alarm generation, alarm recovery, alarm generation elapsed time after start-up, alarm generation time, alarm recovery time, after recovery Various judgment result data required for elucidating the cause of the alarm, such as the alarm generation elapsed time and the number of alarm generations, are extracted and stored in the judgment result data storage unit 15.

As shown in FIG. 3, the alarm judgment data storage unit 14 stores a point NO, a monitoring target such as a measurement target or a control target, and a limit value serving as an index for determining a failure with respect to this monitoring target, that is, for each monitoring target. , The upper limit value, the lower limit value, the upper limit value, the lower limit value, the upper limit value only, the lower limit value only, and other index data sufficient to determine the occurrence of an alarm. Further, the degree of failure, for example, medium failure, light failure, heavy failure, etc. is stored for each monitoring target. Note that these values and the degree of failure can be arbitrarily changed according to the operating state of the plant and the elapse of the operation time.

The suppress control processing device includes a suppress cause storage unit 17, a suppress determination control unit 18, an automatic alarm suppress unit 19, a plant flow storage unit 20, and an alarm generation control unit 21.

As shown in FIG. 4, the suppress cause storage unit 17 stores all possible causes for which the suppression processing is necessary among the cause of alarm generation for each point NO in advance based on past knowledge and experience. Item is described. For example, "Warning occurs at point 1 several seconds after startup."
Are described, and a suppression necessity area is provided for each cause item. In this area,
Whether or not the need for suppression may be set in advance for each cause item, or may be set as needed every time an alarm is generated at each point or while checking the operating state of the plant.

Further, if necessary, all of the cause items may be set to require suppression. In this case, the automatic suppression selection key 8 is operated to set the area of all the items to the necessity of suppression, and the automatic suppression selection key 8 is operated again as needed to determine the necessity of the suppression of all the item areas. It may be canceled and switched to individual setting.

Upon receiving the alarm of a certain point NO sent from the input signal state judging section 12, the suppress judgment judging section 18 makes a judgment based on the judgment result data stored in the judgment result data storage section 15 for the point NO. Referring to the cause item of the corresponding point in the suppress cause storage unit 17,
When the contents of the judgment result data and the cause item data substantially match, if a suppression necessity is set in the suppression necessity area, a suppression request signal is output.

The automatic alarm suppressor 19 receives a suppress request signal from the suppress judgment controller 18 and outputs a suppress processing signal prior to the generation of an alarm for the plant state signal at the corresponding point NO. When receiving the suppression processing signal from the automatic alarm suppression device 19, the CRT display control device 16 displays the suppression state in the automatic suppression state display window 4, and displays the corresponding suppression cause item from the suppression determination control unit 18. Capture C
The information is displayed on the RT display device 2. While the operator determines from this cause item that the state is the suppress state, and if the operator wants to cancel the suppress at this time, it is possible to change and set the necessity of the suppress in the suppress necessity area of the cause item without necessity. is there.

The plant flow storage unit 20 stores the plant flow image data in advance, and stores the alarm generation control unit 2
Output based on the request from 1. When receiving an alarm generation signal in response to a plant state signal at a certain point from the input signal state determination unit 12, the alarm generation control unit 21 does not generate an alarm if a suppression request signal is received from the suppression determination control unit 18, If there is no suppression request signal, the corresponding point of the plant flow is displayed in a specific color and an alarm signal is generated.

Next, the operation of the above apparatus will be described with reference to FIG. The signal input processing unit 11 sequentially fetches the plant state signal of each point NO in accordance with the data fetch instruction of the measurement point from the keyboard 3,
A plant state signal is sent to the input signal state determination unit 12 together with the point NO. This input signal state determination unit 12
Receives the plant state signal at a certain point, and determines whether or not the received signal exceeds the alarm determination data stored in advance in the alarm determination data storage unit 14 (S2). Here, when it is determined that the plant state signal has exceeded, it is determined that there is a change in the signal state, and the plant state signal at the point is stored in the time-series data storage unit 13 in time series, while the cause of the alarm occurrence is clarified. Extracts various judgment result data necessary for
It is stored in the determination result data storage unit 15 (S3).

Thereafter, upon receiving an alarm about the plant state signal at a certain point from the input signal state judging section 12, the suppress judgment judging section 18 makes a suppress judgment (S4). This suppression determination is based on the determination result data stored in the determination result data storage unit 15, and refers to the cause item of the corresponding point in the suppression cause storage unit 17,
If the contents of the judgment result data and the cause item data substantially match, and if the need for suppression is set in the need for suppression area, it is determined that suppression is necessary (S5), and the automatic alarm suppressor 19 is provided. Then, a suppress request signal is sent to the alarm generation control unit 21.

As a result, the alarm generation control section 21 does not output an alarm generation signal from the input signal state determination section 12 despite the generation of an alarm relating to the plant state signal at the corresponding point NO. On the other hand, upon receiving the suppress request signal, the automatic alarm suppressor 19 sends a suppress processing signal of the plant state signal to the corresponding point NO (S6). Here, the CRT display control device 16 displays that suppression processing is being performed in the automatic suppression state display window 4 of the CRT display device 2 (S8).

If it is determined in step S5 that suppression is not necessary in the cause item data of the corresponding point NO, it is determined that suppression is not necessary and sent to the alarm generation controller 21. The alarm generation control unit 21 generates an alarm signal related to the plant state signal at the corresponding point NO from the input signal state determination unit 12 (S7). At this time, the alarm generation control unit 21 can simultaneously perform control to display the corresponding point of the plant flow stored in the plant flow storage unit 20 in a specific color. The CRT display control device 16 displays the device at the corresponding point No. displayed on the CRT display device 2 in a specific color or blinking, and generates an alarm (S8).

Further, in the case of the alarm suppression processing, C
Since the cause item data is displayed on the RT display device 2, the operator checks whether the need for suppression is appropriate as it is while looking at the cause item data and based on knowledge, past experience, etc., and changes the cause. Is required, the necessity of suppression corresponding to the relevant cause item data is changed without the necessity of suppression (S9, S10).

Therefore, according to the above-described embodiment, for each point, the cause of the cause of the alarm, which is considered to be necessary for suppression, is stored in advance, and the generation of the alarm of the plant state signal at each point is performed. On the other hand, when the judgment result data relating to the generation of the alarm corresponds to the cause item, the suppression processing is performed. Therefore, the suppression processing can be automatically performed, and unnecessary generation of the alarm can be automatically avoided.

Also, the judgment result data is compared in advance with the cause item data to be suppressed for each point, and when there is a matching cause item data, it is necessary to suppress the cause item data to be suppressed. When the alarm is set, the suppression process is performed for the occurrence of an alarm, so that the suppression process can be selectively performed based on the setting of the necessity of the suppression based on the knowledge and experience of the operator, and the alarm suppression process is further performed. Then, the cause item data is displayed and the suppression process can be changed by reconfirmation.

[0035]

As described above, according to the present invention, the following various effects can be obtained. According to the first aspect of the present invention, the suppression processing can be automatically performed for the generation of the unnecessary alarm, and the generation of the unnecessary alarm can be reliably avoided.

According to the second aspect of the present invention, in addition to the same effect as the first aspect of the invention, the necessity of suppressing for each cause item can be changed at any time. Suppression processing can be performed while taking into account.

According to the third aspect of the present invention, an alarm is reliably generated when there is no suppression processing. As a result, when an alarm is required in consideration of an important failure or an operation state of a plant, the alarm is reliably generated. An alarm can be generated.

[Brief description of the drawings]

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

FIG. 2 is a conceptual configuration diagram of an external appearance of a process console to which the suppression control processing device shown in FIG. 1 is applied.

FIG. 3 is a diagram showing an example of a data array of an alarm determination data storage unit in FIG. 1;

FIG. 4 is a diagram showing an example of a data array of a suppress cause storage unit in FIG. 1;

FIG. 5 is a diagram for explaining the operation of the suppression control processing device.

FIG. 6 is a conceptual configuration diagram showing the appearance of a conventional process console.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Signal input processing part 12 ... Input signal state judgment part 14 ... Alarm judgment data storage part 15 ... Judgment result data storage part 17 ... Suppression cause storage part 18 ... Suppression judgment control part 19 ... Automatic alarm suppression device 21 ... Alarm generation control Department

Claims (3)

[Claims] 1. An input signal state judging means for comparing a plant state signal at each point with predetermined alarm judgment data and extracting judgment result data necessary for alarm generation, alarm recovery, and elucidation of an alarm cause. A judgment result data storage unit for storing judgment result data for each point of the signal state judgment unit; a suppression cause storage unit in which cause item data to be subjected to suppression processing is described in advance for each point; a plant at a certain point When a status signal alarm occurs,
When the determination result data of the determination result data storage unit matches the cause item of the suppression cause storage unit, a suppression determination control unit that outputs a suppression request signal, and for the generation of a warning of a plant state signal at a certain point,
And an automatic alarm suppressor that performs an alarm suppress process when receiving a suppress request signal. 2. An input signal state judging means for comparing a plant state signal at each point with predetermined alarm judgment data and extracting judgment result data necessary for alarm generation, alarm recovery and other reasons for elucidating an alarm cause. A judgment result data storage means for storing judgment result data for each point of the signal state judgment means, and cause item data to be suppressed for each point are described in advance for each point; Suppressing cause storage means with presence / absence area, and for generating a plant status signal alarm at a certain point,
When the determination result data of the determination result data storage unit matches the cause item of the suppression cause storage unit, and the suppression necessity data is set in the suppression necessity existence area, the suppression request signal is output. Judgment control means, and for the occurrence of a warning of a plant state signal at a certain point,
Means for executing an alarm suppress process when receiving a suppress request signal and displaying the relevant cause item data; and re-confirming the necessity of the suppress and necessity setting for the relevant cause item data based on the display result. And a means for prompting a change. 3. The suppression control processing device according to claim 1, wherein when a warning is issued for a plant state signal at a certain point from said input signal state determination means, a suppression request is issued from said suppression determination control means. A suppression control processing device comprising: an alarm generation control means for generating an alarm as it is unless there is a signal.