WO2017072936A1

WO2017072936A1 - Plant monitoring control device

Info

Publication number: WO2017072936A1
Application number: PCT/JP2015/080668
Authority: WO
Inventors: 博章綿引; 暢久大崎; 泰史西山
Original assignee: 株式会社日立製作所
Priority date: 2015-10-30
Filing date: 2015-10-30
Publication date: 2017-05-04

Abstract

The purpose of the present invention is to provide a plant monitoring control device that makes it possible to reduce the burden on a user while preventing capacity pressures on a storage device. The present invention is a plant monitoring control device for controlling devices within a plant and acquiring the amounts processed in the plant, the plant monitoring control device having a playback function for displaying prior states of the plant on an operation terminal including a display means, wherein the plant monitoring control device is characterized in being provided with: an event database for storing events generated in the plant; a process database for storing the amounts processed in the plant; a playback event database that, when the event generated in the plant is a predetermined event, obtains information relating to the event from the event database; and a playback process database for obtaining information on the amount processed in the plant relating to the event from the process database, the prior states of the plant being displayed on the display means of the operation terminal using information held in the playback event database and the playback process database.

Description

Plant monitoring and control device

The present invention relates to a plant monitoring control device used for monitoring and controlling processes in a plant, and more particularly to a plant monitoring control device having a playback function for displaying a past state of a plant on a plant monitoring screen.

Conventionally, plants such as various manufacturing factories, power plants, sewage treatment plants, etc., monitor and control plant processes by a plant monitoring control device configured using a computer. Some of such plant monitoring and control devices have a playback function that displays the past state of the plant on a plant monitoring screen of a monitoring operation terminal and is used for accident analysis, product quality investigation, and the like.

Patent Document 1 is known as an example of a plant monitoring control device having a playback function. In Patent Document 1, “in a process monitoring system including a control device, a display device, an input device, and a monitoring device, a trend screen that displays trend data on a process flow screen, and an alarm history that displays alarm history data. The time series screen such as the screen, the operation / operation history screen for displaying the operation / operation history data, and the operator diary screen for displaying the operator diary data are displayed at the same time, and accumulated according to the operation of the playback operation screen. It has a function of taking out data at a designated reproduction time from the DB and displaying them in association with each screen.

JP 2013-92858 A

The plant information to be displayed by the playback function includes alarm information, trend information, screen information, etc. as disclosed in Patent Document 1. In the playback function, these are displayed on the screen for a specified period, but storing various pieces of information for a long period of time leads to compression of the capacity of the storage device.

In Patent Document 1, the playback function is started according to the operation on the playback operation screen. However, this is a method that places a heavy burden on the user when to start the playback function.

In view of the above, an object of the present invention is to provide a plant monitoring and control device that can reduce the burden on the user while preventing the storage device from being compressed.

In order to solve the above-mentioned problems, the present invention has a playback function for controlling the equipment in the plant, obtaining the process amount of the plant, and displaying the past state of the plant on the operation terminal including the display means. An event database for storing plant events, a process database for storing plant process amounts, and an event database when events occurring in a plant are predetermined events. A playback event database that obtains information on the event from the process, and a playback process database that obtains information on the process amount of the plant related to the event from the process database. Using the information held in the scan, and displaying the past state of the plant on the display unit of the operation terminal.

According to the present invention, the compression of the playback information can prevent the storage device from being compressed. In addition, automatic saving when a specified event occurs can be expected to reduce operations by the user.

The figure which shows the whole structure of the plant monitoring control apparatus which concerns on this invention. The figure which showed the detail of alarm database DB1. The figure which showed the detail of process database DB2. The figure which shows an example of the plant monitoring screen provided with the playback switching button. The figure which showed the playback operation dialog which concerns on this invention. The figure which shows an example of a plant structure. The figure which shows an example of the playback alarm screen. The figure which shows an example of the playback trend screen 12. FIG. The figure which described the relationship between the various process parts and database DB regarding a playback function. The figure which shows the process flowchart which performs the process at the time of designation | designated alarm generation. The figure which shows the process flowchart which performs the process at the time of completion | finish of a batch. The figure which shows the detail of the definition tool for playback functions. The figure which showed an example of the playback alarm database DB3 produced | generated using the definition tool for playback functions.

Hereinafter, embodiments of the plant monitoring control apparatus of the present invention will be described with reference to the drawings.

FIG. 1 shows the overall configuration of a plant monitoring control apparatus according to the present invention.

In FIG. 1, the plant monitoring and control device 100 is mainly configured by a process control device 5, and a control signal S <b> 1 provided by the process control device 5 is supplied via an input / output device 6 to a valve 7 a and a pump 7 b in the plant 7. Given to plant equipment and control them. In addition, various process amounts at the operation end are taken in as a measurement signal S2 into the process control device 5 via the input / output device 6 and stored in the database DB together with time information. Although FIG. 1 shows an example in which the database DB is configured in the process control device 5, it may be configured on the operation terminal side described later.

Numerals

2 and 3 are operation terminals provided with input means such as a keyboard, mouse, and touch screen, and display means such as a display screen, and are connected to each other via a LAN 1 for HMI (Human Machine Interface). Of the

operation terminals

2 and 3, the operation terminal 2 is an operation terminal that collects various plant data and has an HMI server function, and is connected to the process control device 5 via the control LAN 4. With such a configuration, the signal S3 given from the input means of the

operation terminals

2 and 3 is given to the process control device 5 and further to the

plant equipment

7a and 7b, and various information S4 held by the process control device 5 is appropriately set. It is converted into a display format and displayed as a plant monitoring / operation screen on the display means of the

operation terminals

2 and 3. As a result, the operator can monitor and operate the plant.

The database DB configured on the process control device 5 side or the operation terminal 2 side having a server function constitutes a database that is further subdivided for each data type. These are, for example, an alarm database DB1 that holds data of alarms generated during plant operations, and a process DB2 that holds various values such as measured values and set values of plant equipment and TAGs. Also, a playback alarm database DB3 and a playback process database DB4 used in the playback process. Note that the alarm database DB1 and the process database DB2 hold all the plant states as they are, and the playback alarm database DB3 and the playback process database DB4 are cut out from the viewpoint of the playback function and stored separately. It can be said that.

Details of the alarm database DB1 are shown in FIG. 2, and details of the process database DB2 are shown in FIG. In the alarm database DB1, names D11 and occurrence times D12 of various alarms generated during plant operation are stored. Further, the process database DB2 periodically collects the measurement results of the sensors in the plant, distinguished by the TAG number D21 and the item name D22, and the values D24 such as the set values of the equipment, and stores them together with the time information D23. Yes. In FIG. 3, only a part is described in a simplified manner, but in an actual plant, values of several thousand to several tens of thousands of TAG points are periodically collected and stored. Note that the database DB configured on the process control device 5 side or the operation terminal 2 side having a server function has a finite storage device capacity, so that the information in the database DB is cyclic after a certain period. It should be overwritten.

Next, the playback function according to the present invention will be described. The playback function of the present invention includes a playback alarm database DB3 and a playback process database DB4 as separate databases for use in the playback function, in addition to the databases DB1 and DB2 described above. Each database DB3, DB4 can be said to be a part of the information stored in each database DB1, DB2 cut out and stored separately from the viewpoint of the playback function. In the playback alarm database DB3, alarm selection conditions for executing the playback function are set and stored.

The following outlines the playback function. Here, it will be described with reference to FIGS. 4 and 5 that an operator performs display on a monitoring screen using the acquired playback information and performs various operations on the screen. FIG. 4 is a diagram illustrating an example of a plant monitoring screen provided with a playback switching button. For example, a system diagram reflecting the current plant operation is displayed on the plant monitoring screen 9 in FIG. The plant monitoring screen 9 has a playback switching button 8.

During normal operation, the operator performs appropriate plant operation operations while looking at the system diagram simulating the whole plant or a part of the plant displayed on the plant monitoring screen 9 of the operation terminal 3.

In this state, when using the playback function, the operator selects the playback switching button 8. When the playback switch button 8 is selected, a playback information list dialog is displayed, and the operator selects the data that he / she wishes to display.

∙ Select the data you want to play back, and the screen will switch to the playback display screen. On the playback display screen, the selected playback information is displayed in a display format such as trend display or time-series display, and a playback operation dialog 13 for performing a playback operation is displayed in a separate window. FIG. 5 is a view showing a display example of the playback operation dialog 13. By manipulating the display screen of the playback operation dialog 13, the display contents can be manipulated within the period of the selected playback information.

The contents of the playback operation dialog 13 in FIG. 5 include normal playback 19, fast forward playback 20, rewind playback 18, frame forward 17, frame reverse 15, pause 21, seek bar 16, and the like. In addition, the time display area 14 displays the date and time of the playback information currently being reproduced. When the normal regeneration 19 is selected, the state of the plant is displayed from the time selected by the seek bar 16. When fast forward playback 20 is selected, fast forward playback is performed from the time selected by seek bar 16. Further, when fast-forward playback is operated a plurality of times, the fast-forward speed changes to 2 times, 5 times, and 10 times. When the rewind playback 18 is selected, the rewind playback is performed from the time selected by the seek bar 16. Further, when the rewind reproduction is selected a plurality of times, the rewind speed changes to 2 times, 5 times, and 10 times. When the frame advance 17 is selected, the time of 1 second is advanced from the time selected by the seek bar 16. When the frame return 15 is selected, the time of 1 second is returned from the time selected by the seek bar 16. When the pause 21 is selected, the current display content is stopped.

Further, when the alarm icon 22 in the operation dialog 13 is operated, the playback alarm screen 11 for displaying an alarm generated at the time displayed by the playback is displayed. Further, when the trend graph icon 23 is operated, a list of trend graphs is displayed, and when a trend graph to be displayed is selected from the list, a playback trend screen 12 displaying a trend graph of the time displayed in the playback is displayed. To do. By performing the various operations described above, the user displays and analyzes the past plant state. 6a shows an example of the plant configuration, FIG. 6b shows an example of the playback alarm screen 11, and FIG. 6c shows an example of the playback trend screen 12.

In the above description, using the playback information that has already been acquired, the operator displays on the monitoring screen and executes the playback function that changes the display contents from the playback operation dialog 13 in another window. explained. Next, the relationship between the processing unit for creating display contents and the database DB in accordance with an operation instruction from the playback operation dialog 13 will be described.

FIG. 7 shows the configuration of various processing units and a database DB for realizing the playback function. First, the playback operation processing unit 24 interprets the operation contents in the playback operation dialog 13 of FIG. 5, and plays back playback information, display time, and the like displayed in the operation dialog selected by the operator. Pass to part 25. The playback information processing unit 25 accesses the playback alarm database DB3 and the playback process database DB4, and acquires playback information at a specified time. The playback display processing unit 26 appropriately displays the playback plant monitoring screen 10 in FIG. 6a, the playback alarm screen 11 in FIG. 6b, and the playback trend graph screen 12 in FIG. 6c based on the acquired data.

Next, the playback alarm database DB3 and the playback process database DB4 used in playback will be described. The playback alarm database DB3 stores only the alarm information selected in advance among all the alarm information stored in the alarm database DB1, and the playback process database DB4 stores it in the process database DB4. Of all the process information, only pre-selected process information is stored. Needless to say, pre-selected process information is stored in association with pre-selected alarm information.

The playback alarm database DB3 stores the following conditions as triggers for acquiring playback information. Based on this trigger, information for a specified period of the alarm database DB1 and process database DB2 is extracted and played back. It is stored in the alarm database DB3 and the playback process database DB4. The trigger condition is, for example, when a specified alarm occurs, when a batch ends, or when specified by a user. In short, playback information acquisition is started after confirming that an event such as a specified alarm set in the trigger condition occurs, a batch end, or a user specified event has occurred. If the expression event is used, the alarm database DB1 and the playback alarm database DB3 are similar to the event database DB1 and the playback event database DB3.

Among these, specific processing flowcharts at the time of occurrence of the designated alarm and at the end of the batch are shown in FIGS. FIG. 8 is a diagram showing a processing flowchart for performing processing when a designated alarm occurs. In the first process step S10 in FIG. 8, the following flow is started upon detection of an alarm occurrence. In the processing step S11, it is confirmed by referring to the playback alarm database DB3 that the detected alarm is a designated alarm that has been designated in advance. Wait until it occurs. If it is a designated alarm, pre-alarm information is obtained from the process database DB2 in processing step S12. Furthermore, it is specified in the process step S13 that acquisition of information after the occurrence of an alarm is designated.
Confirmation is made with reference to the playback alarm database DB3, and if specified, information collection is continued until the specified time elapses in processing step S14, and the processing proceeds to processing step S15. If the acquisition of information after alarm occurrence is not designated in process step S13, the process immediately proceeds to process step S15. In processing step S15, information including the pre-alarm information or post-occurrence information taken from the process database DB2 is stored in the playback process database DB4 as playback process data. Note that the alarm information at this time is cut out from the alarm database DB1 and stored in the playback alarm database DB3.

FIG. 9 is a diagram showing a processing flowchart for performing processing at the end of the batch. Here, the end of the batch is the time when a series of processing steps in the plant is completed. For example, the materials A and B are put in a container, stirred and heated, and finished when the internal temperature reaches a predetermined temperature. A series of steps is an example of batch processing, in which material charging into the container is the start time, and temperature arrival is the end time.

In the first processing step S20 in FIG. 9, the end of the batch is detected and the following flow is started. In processing step S21, it is confirmed by referring to the playback alarm database DB3 that the detected batch end information is a designated batch designated in advance, and if it is not a designated batch, the subsequent series of processing is not performed. Wait until the next batch finishes. If it is a designated batch, information in the period from the start to the end of the batch is obtained from the process database DB2 in processing step S22. In the processing step S23, the information within the period from the start to the end of the batch fetched from the process database DB2 is stored in the playback process database DB4 as playback process data. In the playback alarm database DB3, information on the designated batch at this time is stored, for example, cut out from the alarm database DB1.

In executing the processing flow of FIGS. 8 and 9 above, necessary data such as a start condition must be set in advance. The setting operation at this point is performed in advance by a tool for defining a playback function. Must be registered in the plant supervisory control system. The playback function definition that has been set is held in, for example, the playback alarm database DB3. Details of the playback function definition tool are shown in FIG.

In the playback function definition tool 40 of FIG. 10, when automatic saving of the playback information at the time of occurrence of the designated alarm is performed, the alarm information that causes the automatic saving is input to the collection-derived alarm input field 29. To do. In the illustrated example, “pump A failure” is input. Next, in order to determine the collection period of the playback information, by inputting “pump A recovery” in the illustrated example as the collection end alarm information in the collection end alarm input field 30, from the time when the collection-derived alarm occurs, Playback information during the time when the collection end alarm occurs can be automatically saved.

It is also possible to specify the collection time. By specifying the time (year, month, day, hour, minute, second) in the alarm occurrence time input field 31, the collection-derived alarm is generated from the specified time before the alarm occurrence. It is possible to automatically save the information up to. In addition, by designating a time in the post-alarm occurrence time input field 32, it is possible to automatically save the period from the collection-induced alarm occurrence time to the designated time after the alarm occurrence. It is also possible to specify the time before and after the occurrence described above in combination.

In FIG. 10, when automatically saving the playback information at the end of the batch, the playback information from the start to the end of the specified batch is specified by specifying the batch to be saved in the batch definition input field 33. Auto save. Here, the batch is a collection of operation processes of various facilities for manufacturing a certain product (food, medicine, etc.), and the definition of the batch is usually defined by each dedicated builder.

In FIG. 10, in the case of automatically saving playback information at the time of user designation, by designating each of the user designated start time input field 34 and the user designated end time input field 35, between the times designated by the user Automatically save playback information.

FIG. 11 shows an example of the playback alarm database DB3 generated by using the playback function definition tool 40. In this example, as the specified playback conditions, for example, items of “pump A failure” and “mixing pot pressure increase” are described in the column of the playback information name D31, the column of the start time D32, and the storage period D33. It is stored together with the information in the column. The storage period can be set separately for the time before the trigger is established and the time after the establishment.

In the above explanation,
The playback function having the function of automatically generating the playback database DB when an event occurs has been described above. The playback database DB can also be created and used as a binary file or a csv file.

1: LAN for HMI, 2, 3: Operation terminal, 4: Control LAN, 5: Process control device, 6: Input / output device, 7: Plant, 7a: Valve, 7b: Pump, 8: Playback switching button, 9 : Plant monitoring screen, 10: playback plant monitoring screen, 11: playback alarm screen, 12: playback trend graph screen, 13: playback operation dialog, 14: time display area, 15: frame return, 16: seek bar, 17: Frame advance, 18: Rewind playback, 19: Normal playback, 20: Fast forward playback, 21: Pause, 22: Alarm display button, 23: Trend display button, 24: Playback operation processing unit, 25: Playback Information processing unit, 26: playback display processing unit, DB3: playback alarm database, DB4: playback Process database, 29: Collection cause alarm input field, 30: Collection end alarm input field, 31: Time before alarm occurrence input field, 32: Time input field after alarm occurrence, 33: Batch definition input field, 34: User specified start time Input field, 35: User specified end time input field, 40: Definition tool for playback function, 100: Plant monitoring and control device

Claims

A plant monitoring and control apparatus that controls equipment in a plant, obtains the process amount of the plant, and has a playback function for displaying a past state of the plant on an operation terminal including a display means,
An event database that stores events that have occurred in the plant, a process database that stores process amounts of the plant, and when an event that has occurred in the plant is a predetermined event, the event database relates to the event A playback event database for obtaining information, and a playback process database for obtaining information on the process amount of the plant related to the event from the process database,
A plant monitoring and control apparatus for displaying a past state of a plant on a display means of the operation terminal using information held in the playback event database and the playback process database.
The plant monitoring control device according to claim 1,
When the predetermined event occurs, the plant monitoring control apparatus is characterized in that information on the process amount of the plant for a predetermined period is held in the playback process database.
The plant monitoring and control device according to claim 1 or 2,
The predetermined event is an alarm generated in the plant, and the process amount information of the plant within a predetermined time range with reference to the alarm generation time is held in the playback process database. A plant monitoring and control device.
The plant monitoring and control device according to claim 1 or 2,
The predetermined event is an alarm generated in the plant, and information on the process amount of the plant within a time range from the time when the predetermined alarm occurs to the time when another predetermined alarm occurs Is stored in the playback process database.
The plant monitoring and control device according to claim 1 or 2,
The predetermined event is the batch end of the batch processing in the plant, and the process amount information of the plant in the time range from the batch start to the batch end of the batch processing is held in the playback process database. A plant monitoring and control device characterized by:
The plant monitoring and control device according to claim 1 or 2,
The predetermined event is a plant monitoring and control apparatus that designates a time, and holds information on the process amount of the plant within a predetermined period in the playback process database.