JPH06348239A - Display device for restoration of operating state - Google Patents

Abstract

PURPOSE:To shorten the time for displaying the reproduction of restoration and the result of reproduction by previously reproducing the estimated operating data under occurrence of a fault in accordance with the data before and after occurrence of the fault of a data input device, etc., of a plant. CONSTITUTION:A fault detecting section 14 detects the drop-out of operating data, etc., by the data accumulated in an operating history data base 6 when there is the fault in the operating data of the plant collected by the trouble of the data input device, etc., of the plant. An operating data estimating section 15 estimated the operating data under the occurrence of the fault in accordance with the data before and after the occurrence of the fault and records the data in an estimated data base 16. The estimated operating data and the operating history data are synthesized in a data base synthesizing section 17 and are used for displaying the reproduction of the restoration and the result of the reproduction. Then, the time for the display is shortened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention collects event change data of plant operating conditions that occur at regular intervals or irregularly and displays the status retroactively, but the plant is operating normally. The present invention relates to an operation state restoration display device that can restore and display data that is missing due to a failure of a data input device or the like, in a state closer to actual operation data.

[0002]

2. Description of the Related Art FIG.
It is a functional block diagram of the conventional operating state restoration display device shown in Japanese Patent Publication. In FIG. 16, a plant 2 is connected to the operating condition restoration display device 1 via a data input means 3, a real-time database 4, and a writing means 5. The operation state restoration display device 1 includes an operation history database 6 for accumulating operation history data of a predetermined cycle, a reading unit 7 for reading data from the operation history database 6, a reproduction database 8 for forming redisplay data, Dialogue means 9 for inputting the action of the operating condition restoration display device 1, display means 10 for displaying data of the reproduction database 8, data setting means 11 for restoring each operation data from the dialogue means 9, operating conditions (control) of the plant 2. (Condition) is changed through the interactive means 9 based on the operating condition changed by the automatic control changing means 12 and the automatic control changing means 12 and the operating state is examined using the data of the operating history database 6 and reflected in the reproduction database 8. The automatic control processing means 13.

Next, the operation of the conventional example shown in FIG. 16 will be described. For example, plant operation data such as analog information such as pressure and temperature and digital information such as valve opening / closing is converted into data suitable for the operation state restoration display device 1 by the data input means 3, and is stored in the real time database 4 at regular intervals. Will be updated. Writing means 5
Are accumulated as operation history data in the operation history database 6 according to a predetermined cycle and procedure. The accumulated data is read by the reading means 7 according to an instruction from the dialogue means 9 such as a CRT or a keyboard, and is extracted in the reproduction database 8 as data for redisplay. The extracted data is output to the display means 10 such as a CRT in the form of a graph according to an instruction from the dialogue means 9. When the displayed data has an abnormality such as a missing operation data due to a failure of the input device or the like, the repair data of each operation data is set from the dialogue means 9 to the reproduction database 8 through the data setting means 11, and the display means is displayed. Redisplay by 10. Further, the operating condition (control condition) of the plant is changed by the automatic control changing means 12 through the dialogue means 9, and the automatic control processing means 13 examines the operating state based on the data of the actual operation history database 6 and stores it in the reproduction database 8. It is reflected and displayed on the display means 10.

[0004]

The conventional operating condition repair display device is constructed as described above, and the repaired reproduction of the missing operation history data is reproduced only when the interactive means requests it. Since it takes time to restore and reproduce, and because the data to be restored is input interactively while looking at the immediately preceding operation data, the input operator needs know-how of plant operation, and the know- There is also a problem in that the person in charge of permission must repair it by using direct communication means. Further, since the data once restored and reproduced is not reflected in the operation history data, there is a problem that the data setting at the time of abnormality must be set every time the data is displayed.

The present invention has been made in order to solve the above-mentioned problems, and when the abnormality detecting section checks the operation data in the operation history database for an abnormality and detects an abnormality, the abnormality is detected before and after the occurrence of the abnormality. By recreating the estimated operation data during the occurrence of an abnormality based on the above data, the time for restoration reproduction and display of the reproduction result can be shortened, and similar operation patterns can be searched from past operation patterns. By displaying this together with the operation data, even a person without know-how can easily recover the data based on the pattern, and by recording the once-corrected data in the operation history database. The purpose of the present invention is to obtain an operation status repair display device that can prevent the same repair processing from being performed.

[0006]

An operation state restoration display device according to a first aspect of the present invention collects event change data of an operation state of a plant that occurs at regular intervals or irregularly, and displays the state retroactively. When a failure occurs in a device other than the plant such as a data input device, the data accumulated in the operation history database 6 causes an abnormality such as a loss of event change data and an abnormality that detects the restoration in real time. Based on the detection unit 14 and the operation data estimation unit 15 that mathematically calculates the estimated operation data during the abnormality occurrence based on the data before and after the occurrence of the abnormality detected by the abnormality detection unit 14 and records it in the estimation database 16. A database for preparing and synthesizing the actual driving history data in the driving history database 6 and the estimated driving data during the occurrence of an abnormality when displaying the driving data It is characterized in that it comprises a forming section 17.

Since the operating condition restoration display device according to the second aspect of the present invention often shows a similar pattern when the operating condition of the plant is relatively viewed by a certain period unit such as one hour, one day, and one month. The pattern cutout unit 18 that cuts out a characteristic driving pattern based on the past driving data in the driving history database 6 and records it in the pattern database 19, and the history data at the time of abnormality detection by the abnormality detection unit 14 are excluded. It is characterized by including a pattern detection unit 20 for extracting a similar operation pattern by comparing the characteristics of normal data with the characteristics of the pattern recorded in the pattern database 19 and recording them in the similar pattern database 21. is there.

The operating condition restoration display device according to the third aspect of the present invention corrects the data at the time of abnormality so that it is not necessary to restore the data every time when displaying the driving history data many times. It is characterized in that the created / displayed operation data is also provided with an operation history data restoration unit 22 which can be recorded together with the fact that it is not the actual operation data and can be reflected in the operation history database 6. .

[0009]

In the first aspect of the invention, the operation data estimation unit 15
Is set in advance by, for example, the dialogue means 9 based on the data before and after the occurrence of the abnormality detected by the abnormality detection unit 14 (the normal operation data up to the occurrence of the abnormality and the normal operation data after the abnormality is resolved). The regression analysis method is used to estimate the operating data during the occurrence of an abnormality, and the estimated operating data is displayed upon request. The estimated driving data is displayed by the database synthesizing unit 17 together with the actual driving history data.

In the second invention, the pattern detecting section 20
Compares the characteristics of the driving state with the driving pattern already cut out based on the past driving data by the pattern cutting section 18 in every certain period including an abnormal time, and finds a driving pattern having similarities. It is picked up so that it can be referred to when repairing operation data.

In the third aspect of the present invention, the operation history data restoration unit 22 is the operation data obtained by restoring the data at the time of abnormality by the restoration work, and the data is restored, and is not the actual operation data. The operation history database 6 can be reflected in a distinguishable state.

[0012]

【Example】

Example 1 (corresponding to claim 1). FIG. 1 is a functional block diagram showing a driving state restoration display device according to a first embodiment of the present invention, in which 1 to 13 are exactly the same as the conventional device. In FIG. 1, reference numeral 14 detects an abnormality such as a loss of event change data of the operating state of the plant based on the data accumulated in the operating history database 6 in order to perform the abnormal occurrence of the operating data and restore the abnormal state to the normal state. Abnormality detection unit, 15 is the abnormality detection unit 1
Regression analysis such as autoregressive analysis set from the dialogue means 9 is for estimating the operation data during the abnormality occurrence based on the data before and after the abnormality occurrence detected in 4 and recording the estimated operation data in the estimation database. An operation data estimation unit for estimating operation data at the time of abnormality by a method, 16 is an inference database for recording the inferred data, and 17 is actual operation history data in the operation history database 6 when the operation data is displayed. It is a database synthesizing unit for synthesizing the estimated operation data in the estimation database 16 during occurrence of the abnormality.

By the way, the regression analysis means that the measured data (Yi) measured at regular time intervals (Xi) as shown in FIG. 2 has a linear tendency or a curved line as shown in FIGS. 3, 4 and 5. Trend,
If there is a tendency to go up and down around a certain value, Xi and Y
A calculation formula showing the relationship of i is obtained from the measurement data, and even if data is missing, the measurement data at that time can be estimated from this calculation formula.

In the case of a linear tendency, the linear regression equation shown in the following equation (1) is used.

[0015]

[Equation 1]

In the case of a curved tendency, the curve regression equation shown in the following equation (2) is used.

[0017]

[Equation 2]

When there is a tendency of going up and down around a certain value, the autoregressive equation shown in the following equation (3) is used.

[0019]

[Equation 3]

That is, α, β, γ, α1, α2, ε1 are obtained based on the actually measured data (Xi, Yi), and the data at the time point (i) missing is estimated from the equation. In the case of plant data, generally, there are many data that have a linear tendency or a tendency to go up and down around a certain value.

In the first embodiment, auto-regression is used, and the equation is, for example, as shown in the following equation (4), and the next data can be estimated by using the data up to the previous two.

[0022]

[Equation 4]

The relationship between the missing point (i) and the data (Yi) is as shown in FIG. 6, and the change in the measured value represented by the equation (4) is as shown in FIG.

FIG. 8 is a diagram showing the contents of the operation history database of the operation state repair display device according to the first embodiment. FIG. 9 is a display example of operation data of the operation state restoration display device according to the first embodiment, and reference numerals 30 and 31 are curve display examples of item D01 and item Dnn in FIG. FIG. 10 is a diagram showing the contents of the estimation database of the operation state repair display device according to the first embodiment. In FIG. 10, time indicates an estimated time, an item indicates a data item such as estimated hydraulic pressure, and an estimated value indicates a value such as estimated hydraulic pressure.
FIG. 11 is a diagram showing the contents of the estimation condition table in the operation data estimation unit of the operation state restoration display device according to the first embodiment. In FIG. 11, the information necessary for each method is the above-described coefficients such as α, β, γ, α1, α2, and ε1, and those fixedly determined are set in advance.

Next, the operation of the first embodiment will be described with reference to FIGS.
I will explain based on. The operation data of the plant that occurs at regular intervals or irregularly is recorded in the operation history database 6 in the format shown in FIG. The abnormality detection unit 14 constantly checks the operation data recorded in the operation history database 6, and detects the occurrence of an abnormality such as the temperature suddenly becoming 0 degree as shown in FIG. 9 at time Tm and the time Tn. At the time of abnormal recovery when the temperature is suddenly detected from 0 degree at time Tm
-1 and time Tn + 1, using several points of data before and after the occurrence and recovery of the abnormality, the regression analysis in which the operation data during the period when the abnormality has occurred in the operation data estimation unit 15 is set by the dialogue means 9 The calculation is performed based on the calculation formula of, and is stored in the estimation database 16 in a format as shown in FIG. When displaying the driving history data, the data of the driving history database 6 and the data of the estimation database 16 are synthesized by the database synthesizing unit 17 for each item, and the reproduction database 8 is displayed.
Is created and displayed on the display means 10. At this time, as shown by the curve 30 and the curve 31 in FIG. 9, the data in the driving history database 6 are displayed in a solid line, and the data in the estimation database 16 are displayed in a broken line so that they can be distinguished from each other. Only when the estimated data is not similar to the actual driving condition, the data setting means 11 or the like also provided in the conventional device corrects the data. The calculation formula for the estimation is set in the operation data estimation unit 15 in the form shown in FIG. The operation data estimating unit 15 obtains the estimated operation data by obtaining a curve formula from the set usage method and the number of sample points and substituting the abnormality occurrence time into the formula.

Embodiment 2 (corresponding to claim 2). FIG. 12 is a functional block diagram showing a driving state restoration display device according to the second embodiment of the present invention, and 1 to 17 are exactly the same as those of the first embodiment. In FIG. 12, 18 is a pattern cutout unit that cuts out a pattern of a characteristic driving state based on the past driving data in the driving history database 6 and records it in the pattern database 19, and 20 is an abnormality detected by the abnormality detection unit 14. This is a pattern detection unit that matches the characteristics of normal data excluding the historical data of time with the characteristics of patterns recorded in the pattern database 19 to pick up similar driving patterns and records them in the similar pattern database 21. FIG. 13 is a diagram for explaining the contents of the pattern database of the operating condition restoration display device according to the second embodiment.

Next, the operation of the second embodiment will be described. In the first embodiment, the estimation of the operation data during the abnormal period was performed by the calculation formula such as regression analysis.
Then, the past operation data is cut out in advance from the operation history database 6 by using the pattern cutout unit 18, and the image data (for example, the information of item D02) as shown in FIG. Keep a record. When the abnormality detection unit 14 detects an abnormality, the pattern detection unit 20 compares the characteristics of the normal data excluding the history data at the time of abnormality with the characteristics of the pattern recorded in the pattern database 19 to be similar. The driving pattern is picked up and recorded in the similar pattern database 21. If most of the data cannot detect a characteristic due to an abnormality, all patterns are recorded in the similar pattern database 21. When displaying the operation data, the information of the similar pattern database 21 is displayed on the display means 10 which is different from the display shown in the first embodiment, and the data setting means 11 and the like which are also provided in the conventional apparatus while referring to this information. Then, correct the driving data.

Embodiment 3 (corresponding to claim 3). FIG. 14 is a functional block diagram showing a driving state restoration display device according to a third embodiment of the present invention, and 1 to 17 are exactly the same as those in the first embodiment. In FIG. 14, reference numeral 22 denotes an operation history data restoration unit for reflecting the restored and reproduced operation data on the dialogue means 9 and the display means 10 and reflecting them on the operation history database 6. That is, the operation history data restoration unit 2
2 is the operation data that is created and displayed by correcting the data at the time of abnormality so that it is not necessary to restore the data each time when the operation history data is displayed. What is not recorded is recorded together and then reflected in the operation history database 6. FIG. 15 is a diagram showing the contents of the operation history database of the operation state repair display device according to the third embodiment.

Next, the operation of the third embodiment will be described. In the first embodiment, the database is synthesized and the repair display is performed every time the reproduction display is performed. However, in the third embodiment, when the repair-displayed abnormal data is determined to be appropriate operation data, the operation history is displayed. The data restoration unit 22 reads the abnormality restoration data in the reproduction database 8 and records it in the operation history database 6. At this time, in order to leave that data as the recovered data,
When a repair mark “*” is added to the operation history database 6 and displayed again as shown in (4), only the data having this repair mark is displayed separately.

[0030]

As described above, according to the first aspect of the present invention, the abnormal state of the operation data is detected in advance by the abnormality detecting section before the operating state is displayed, and the operation at the time of abnormality is detected by the operation data estimating section. Since the configuration is such that the data is guessed, it is possible to shorten the time until the display when the display request including the data in the abnormal state period is requested and the time to recover the data in the abnormal state. There is.

Further, in the second invention, when the arithmetical data restoration as in the first invention cannot be performed because the tendency of the curve showing the driving condition differs depending on the day, the past driving recorded in the pattern database is performed. The pattern is taken out via the pattern detection unit and displayed along with the operation data,
Since it is configured to display, the operation data can be restored while referring to past operation patterns, which shortens the restoration time and eliminates the need for advanced plant operation know-how to display the operation data. There is.

In the third aspect of the invention, since the operation data once restored for display can be reflected in the operation history database through the operation history data restoration unit, the data once restored can be restored again. There is an effect that it is not necessary to repair when displaying, and the re-display time is shortened.

[Brief description of drawings]

FIG. 1 is a functional block diagram of an operating condition restoration display device according to a first embodiment of the present invention.

FIG. 2 is a diagram for explaining data used for regression analysis in Example 1.

FIG. 3 is a diagram showing measurement data of linear tendency in the explanation of regression analysis.

FIG. 4 is a diagram showing measurement data of curve tendency in the explanation of regression analysis.

FIG. 5 is a diagram showing measurement data that tends to go up and down around a certain value in the explanation of regression analysis.

FIG. 6 is a diagram showing an example of measurement values by a regression analysis calculation formula.

FIG. 7 is a diagram showing an example of changes in measured values that can be represented by a regression analysis calculation formula.

FIG. 8 is a diagram showing the contents of a driving history database in the first embodiment.

FIG. 9 is a diagram illustrating a display example of driving history data according to the first embodiment.

FIG. 10 is a diagram showing the contents of a guess database according to the first embodiment.

FIG. 11 is a diagram showing the contents of an estimation condition table in an operation data estimation unit in the first embodiment.

FIG. 12 is a functional block diagram of an operating condition restoration display device according to a second embodiment of the present invention.

FIG. 13 is a diagram for explaining the contents of the pattern database in the first embodiment.

FIG. 14 is a functional block diagram of an operation state repair display device according to a third embodiment of the present invention.

FIG. 15 is a diagram showing the contents of a driving history database in the third embodiment.

FIG. 16 is a functional block diagram of a conventional operating condition restoration display device.

[Explanation of symbols]

 1 Operating State Repair Display Device 2 Plant 3 Data Input Means 4 Real Time Database 5 Writing Means 6 Operation History Database 7 Reading Means 8 Reproduction Database 9 Dialogue Means 10 Display Means 11 Data Setting Means 12 Automatic Control Changing Means 13 Automatic Control Processing Means 14 Abnormality detection unit 15 Operation data estimation unit 16 Guess database 17 Database synthesis unit 18 Pattern cutout unit 19 Pattern database 20 Pattern detection unit 21 Similar pattern database 22 Operation history data restoration unit 30 Example of operation status display curve of abnormal plant 31 Normal plant Example of operating status display curve

Claims (3)

[Claims] 1. An operation state restoration display device that collects event change data of a plant operation state that occurs at regular intervals or irregularly and displays the operation state of the plant retroactively, and accumulates it in an operation history database. The abnormality detection unit that detects anomalies such as missing event change data from the above data, and the operation data during the abnormality occurrence is estimated based on the data before and after the occurrence of the abnormality detected by this abnormality detection unit. An operation data estimation unit that records estimated operation data, and a database synthesis unit that synthesizes the actual operation history data in the operation history database and the estimated operation data during the abnormality when displaying the operation data are provided. An operating condition restoration display device characterized by the above. 2. An operation state restoration display device for collecting event change data of a plant operation state that occurs at regular intervals or irregularly and displaying the operation state of the plant retroactively and accumulated in an operation history database. The abnormality detection unit that detects anomalies such as missing event change data from the above data, and the operation data during the abnormality occurrence is estimated based on the data before and after the occurrence of the abnormality detected by this abnormality detection unit. An operation data estimation unit that records estimated operation data, a database composition unit that combines actual operation history data in the operation history database and estimated operation data during occurrence of an abnormality when displaying operation data, and the operation Based on the past driving data in the history database, the characteristic driving state patterns are cut out and stored in the pattern database. A similar pattern is selected by comparing the pattern cut-out section to be recorded with the characteristics of normal data excluding the history data of abnormalities detected by the abnormality detection section and the characteristics of the patterns recorded in the pattern database. A driving state restoration display device, comprising: a pattern detection unit for recording in a transmission similar pattern database. 3. An operation history repair display device that collects event change data of a plant operation status that occurs at regular intervals or irregularly and displays the operation status of the plant retroactively, and accumulates it in an operation history database. The abnormality detection unit that detects anomalies such as missing event change data from the above data, and the operation data during the abnormality occurrence is estimated based on the data before and after the occurrence of the abnormality detected by this abnormality detection unit. An operation data estimation unit that records estimated operation data, a database composition unit that combines actual operation history data in the operation history database and estimated operation data during the occurrence of an abnormality when displaying operation data, and Also displays the operation history data, it is created and displayed by correcting the data at the time of abnormality so that the data does not need to be restored each time. A driving state repair display device comprising a driving history data restoration unit capable of recording the indicated driving data together with the fact that it is not the actual driving data and reflecting it on the driving history database.