JPH09198130A - Plant operation monitoring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize an object-oriented plant monitoring device. SOLUTION: Kinds of process data is stored in a tag file 13 by making its momentary data 13a, trend data 13b and alarm history data 13c correspond to tag numbers by each tag. Then at the time of specifying one of the tags from the plant operation monitoring picture of a display 14 by a display item selection means 24 and giving the display command of the pieces of momentary data 13a, trend data 13b and alarm history data 13c, if it is the display command of moment data 13a, an instrument pattern display processing means 19 reads moment data 13a from the tag file 13 to display by an instrument pattern 18. On the other hand if it is the display of trend data 13b, a trend display processing means 21 reads trend data 13b of the pertinent tag to display it by making a trend graph 20 and if it is the display of alarm history data 13c, an alarm history display processing means 23 reads alarm history data 13c of the pertinent tag to display it by making an alarm history list 22.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a plant operation monitoring device.

[0002]

2. Description of the Related Art Conventionally, in order to monitor the operation of a general industrial plant, a process flow is graphically displayed on a display device by a plant operation monitoring device as a human interface installed in an operation room.
The operator is configured to operate while watching the process flow of the display device. A file of process data in such a plant operation monitoring device is, as shown in FIG. 9, real-time data (instantaneous data) of various instruments.
And trend data are separately registered in the instantaneous data file 1 and the trend data file 2, respectively, and the alarm history data is also registered in another alarm history data file 3 (the number is the tag number TA.
Even if the data is G NO.), It has a structure in which different file systems are used for management, and there is no relationship between the files.

[0003]

However, the conventional plant operation monitoring device that manages the file of such process data has the following problems. In recent years, the adoption of a human interface based on an object-oriented GUI has been attracting attention from the viewpoint of improving operability. However, when the conventional process data file management described above is performed, an object-oriented display method may be adopted. For example, the display operation method has become complicated, and the software program has to be significantly modified.

For example, an instrument pattern 4 for measuring process data on the screen of a display device as shown in FIG.
If it is necessary to know the trend of this instrument in the state where is displayed and the instantaneous data is displayed there, even if the trend graph screen 5 is finally displayed, this trend graph screen 5 is displayed. In order to do so, a two-step intermediate operation procedure of displaying the trend screen menu 6 and selecting the corresponding tag from this menu 6 to display the trend graph 7 is required.

In order to avoid the need for the operator to perform such an intermediate operation, if the software program is modified so that it can be automatically expanded from the instrument pattern screen 4 to the trend graph screen 5 by one operation, If the trend data file (which is a separate file independent from the instantaneous data file) in which the trend data of the tag of the target instrument is registered is automatically searched for by internal processing, the trend data of the target tag must be displayed. Instead, a complicated program was needed.

The present invention has been made in view of such conventional problems, and it is possible to directly and continuously switch between the display of the instantaneous data and the display of the trend data of the same tag. Another object of the present invention is to provide a plant operation monitoring device that can display alarm history data by the same operation and can also simplify the software program required for that.

[0007]

According to a first aspect of the present invention, there is provided a plant operation monitoring apparatus which tag data of various process data of a monitored plant in which instantaneous data and trend data are associated with tag numbers for each tag. A tag file management means to save in, from the plant operation monitoring screen of the display device, a display item selection means for designating one of the tags and giving a display command of its instantaneous data or trend data,
Regarding the tag designated by the display item selection means, the instrument pattern display processing means for reading the instantaneous data from the tag file and displaying it in the instrument pattern on the plant operation monitoring screen of the display device, and the tag designated by the display item selection means , Trend display processing means for reading the trend data from the tag file and displaying it as a trend graph on the plant operation monitoring screen of the display device.

In the plant operation monitoring apparatus according to the first aspect of the present invention, the tag file management means stores various process data of the monitored plant into a tag file in which instantaneous data and trend data for each tag are associated with the tag number. Save it.

When any one of the tags is designated by the display item selection means and a display command for the instantaneous data or trend data is given from the plant operation monitoring screen of the display device, if it is a display command for the instantaneous data, If the instrument pattern display processing means reads the instantaneous data of the corresponding tag from the tag file and displays it in the instrument pattern on the plant operation monitoring screen of the display device, and if the display command is the trend data display, the trend display processing means The corresponding trend data is read from the tag file from the tag and displayed as a trend graph on the plant operation monitoring screen of the display device.

Thus, the display item of the tag can be selected or switched directly between the instantaneous data and the trend data, and the operation procedure of the operator can be simplified.

According to another aspect of the present invention, the plant operation monitoring apparatus stores various process data of a monitored plant in a tag file in which instantaneous data, trend data, and alarm history data for each tag are associated with a tag number. By means of the tag file management means and the display item selecting means for giving a display command of the instantaneous data, trend data or alarm history data by designating one of the tags from the plant operation monitoring screen of the display device, For the specified tag, the instantaneous data is read from the tag file, and the instrument pattern display processing means for displaying the instrument pattern on the plant operation monitoring screen of the display device and the tag designated by the display item selection means are read from the tag file. The trend data is read and the plant operation monitoring screen of the display device is displayed. The alarm history data that is read as a trend graph from the trend display processing means and the tags specified by the display item selection means is read from the tag file, and is displayed as an alarm history list on the plant operation monitoring screen of the display device. Display processing means.

In the plant operation monitoring apparatus according to the second aspect of the present invention, the tag file management means associates various process data of the monitored plant with instantaneous data, trend data and alarm history data for each tag corresponding to the tag number. Let me save it in a tag file.

When one of the tags is designated by the display item selection means on the plant operation monitoring screen of the display device to give a display command of its instantaneous data, trend data or alarm history data, the command is displayed. If so, the instrument pattern display processing means reads the instantaneous data of the corresponding tag from the tag file and displays it in the instrument pattern on the plant operation monitoring screen of the display device. If the display command is the trend data display, the trend display is performed. If the processing means reads the trend data of the corresponding tag from the tag file and displays it as a trend graph on the plant operation monitoring screen of the display device, and if the display command is alarm history data display, the alarm history display processing means Alarm history from the tag file for the corresponding tag It reads chromatography data, and displays the alarm history list in plant operation monitoring screen of the display device.

Thus, the display items of the tag can be selected or switched directly between the instantaneous data, the trend data and the alarm history data, and the operation procedure of the operator can be simplified.

According to a third aspect of the present invention, in the plant operation monitoring apparatus according to the first or second aspect of the present invention, the tag file management means uses a tag file as a relational database with a tag number as a key.

In the plant operation monitoring apparatus according to the third aspect of the present invention, the display item can be quickly switched between the instantaneous data, the trend data and the alarm history data by the search by the tag number, and the different tag number is also used. Parallel display processing of data of the same type can be easily performed.

According to a fourth aspect of the present invention, in the plant operation monitoring apparatus according to any one of the first to third aspects, the tag file management means uses the tag file as trend data for each tag to indicate the data of the last sampling time and the sampling period. The data of the changed time and sample period and the process data at each sample timing are saved, and the trend display processing means refers to the data of the last sample time, the time of changing the sample period and the data of the sample period, and displays the trend graph. Is to do.

In the plant operation monitoring apparatus according to the fourth aspect of the present invention, the file capacity can be reduced as compared with the tag file having the structure in which the time stamp is added to each trend data.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing a functional configuration of one embodiment of the present invention. A process data collecting unit 11 that collects process data sent from a control unit of an operation monitoring target plant and a storage of this process data. Tag file management unit 12 that manages
The tag file management unit 12 includes a tag file 13 for storing and registering process instantaneous data, trend data, and alarm history data for each tag number in a predetermined area.

Further, a flow display processing section 17 for displaying a graphical process flow screen 15 on the display device 14 and the instantaneous data 16 of the instrument (managed by the tag number) at each position on the process flow screen 15, An instrument pattern display processing unit 19 for displaying an instrument pattern 18 of instantaneous data of a designated tag, and a trend graph screen 20.
A trend display processing unit 21 for displaying the alarm history display processing unit 23, an alarm history display processing unit 23 for displaying the alarm history screen 22,
A display item selected from the item selection menu 24 displayed on the process flow screen 15 of the display device 14 for selecting a display item, for example, an item selection command of instrument pattern display, trend graph display or alarm history display is received. The display item selection receiving unit 25 and the display item command processing unit 26 for giving a display command to the display processing unit 19, 21 or 23 of the corresponding display item are provided.

Next, the operation of the plant operation monitoring device having the above configuration will be described. First, a method of constructing the tag file 13 will be described. The process data of each part of the plant to be operated and monitored, the flow meter, voltmeter,
Ammeters, thermometers, and other various instruments measure and transmit to the process data collection unit 11 together with the tag number that is assigned in advance as the identification code of the instrument itself, and from here, through the tag file management unit 12, the tag file 13
Will be saved and registered in a predetermined format.

As shown in FIG. 2, the data storage format of the tag file 13 is managed in units of tag numbers assigned to each instrument, and for example, an instantaneous data area for each TAG NO.1, TAG NO.2 ,. 13a, trend data area 13
b, the alarm history data area 13c is secured, and the measured process value P is stored in the instantaneous data area 13a.
V, the set value SV, the manipulated variable MV, the limit value PH, etc. are saved and are updated every sampling period. Note that the actual tag numbers are not TAG NO.1, TAG NO.2, ... As above, but FI001, FI002 for flow meters,
If it is a thermometer, it is set by the user in an arbitrary format such as TI001, TI002, but here, in order to simplify the explanation, it will be referred to as TAG NO.1, TAG NO.2, .... To do.

In the trend data area 13b, the final data collection time T, the sample period δ, and the process data at each sample timing are trend data 1 to 1.
N (N is an integer preset by the system)
Is stored backward from the latest number by a preset number N, and a predetermined number M from the latest alarm data is stored in the alarm history data area 13c.
It is stored back to the previous minute. These data are updated every time an alarm occurs.

Normally, a process flow screen 15 is prepared as the operation monitoring screen of the display device 14 to simplify and graphically express the flow of the monitored plant, and the flow display processing unit 17 displays the process flow screen 15 on the display device 14. The operation of the plant is monitored in the state displayed on. Then, the tag numbers of the instruments installed in the actual process and the process values 16 are displayed at various positions on the process flow screen 15.

Therefore, when the location where the tag number and the process value 16 are displayed (here, the location of the tag of TAG NO.1) is touched or clicked, the flow display processing unit 17 receives the operation. The item selection menu 24 is displayed. Here, the item selection menu 24 displays three options of trend, alarm history, and instrument pattern.

When an instrument pattern is selected and operated in the item selection menu 24, the display item selection receiving unit 25 receives the instrument pattern display selection command and passes it to the display item command processing unit 26, and the display item command processing unit 26 causes the instrument to operate. An instrument pattern display command is given to the pattern display processing unit 19.

When the instrument pattern display processing unit 19 receives this display command, it accesses the instantaneous data area 13a of the tag of the corresponding TAG NO. 1 of the tag file 13 and reads the instantaneous data PV, SV, MV of the process data. , The instrument pattern 18 is displayed on the program flow screen 15 in a multi-window format.

When another tag location (here, the location of TAG NO.2) is pointed on the process flow screen 15, the item selection menu 24 is similarly expanded for the tag number TAG NO.2. When the instrument pattern is selected, the instrument pattern with the tag number TAG NO.2 is displayed side by side with the instrument pattern with the tag number TAG NO.1 previously displayed.

When a trend is selected from the item selection menu 24, the display item selection receiving unit 25 interprets and receives the display command of the trend graph, and the display item command processing unit 26 displays the trend graph screen 20 for the TAG NO. Give a display command.

In response to this instruction, the display item command processing unit 26 gives the trend display processing unit 21 a trend graph display command for the tag of TAG NO. 1, and the trend display processing unit 21 causes the trend display processing unit 21 to apply the TAG NO. The trend data area 13b of the tag 1 is accessed, the trend data is read, and the trend screen 20 is displayed on the display device 14 in the multi-window format. Also on this trend graph display screen 20, if display commands are simultaneously given to other tag numbers, trend graphs of a plurality of process values are displayed in different colors or different line types on the same trend screen 20.

The trend graph display processing performed here will be described in more detail with reference to FIGS. If there is a trend graph display command for a certain tag, the trend display processing unit 21 accesses the trend data area 13b of the tag file 13 to find the final data collection time T, the sampling period δ, and the preset time width. Display range selection processing for reading the included trend data 1 to n is performed (step 21a), trend data 1 to n are plotted with the horizontal axis as the time axis based on the read data, and the discrete data are linearly drawn. A graph display process for interpolating and displaying on the screen of the display device 14 is performed (step 21b).

For example, the display time width of the trend data is specified to be displayed for half a day and 12 hours, and if the sampling period δ = 1 hour, 12 pieces (= n) from the last sample time T. The trend data of is called and displayed.

However, the sampling period of the collected data often differs depending on the tag. Therefore, when different tags are displayed simultaneously, trend data of process values are plotted at time intervals corresponding to the sample periods δ1 and δ2 for each tag as shown in FIG. 4, and the trend graphs 20-1 and 20 are obtained by linear interpolation. -2 is created.

If an alarm history is selected in the item selection menu 24 displayed on the process flow screen 15 shown in FIG. 1, the display item selection receiving unit 25 receives the selection command and transfers it to the display item command processing unit 26 for display. The item command processing unit 26 gives the alarm history display processing unit 23 an alarm history display command.

The alarm history display processing section 23 accesses the alarm history data area 13c of the tag file 13 to read the alarm history data and displays it on the alarm history screen 22 as a list. If a new display command is input for the alarm histories of other tag numbers when the alarm history data has already been displayed, FIG.
The alarm history list 22-1 being displayed as shown in
The alarm history list 22-2 of another tag number for which an additional display request has been made is sorted by the time of occurrence and updated and displayed as the alarm history list 22-3.

As described above, in the plant operation monitoring apparatus of this embodiment, if the item selection menu 24 is expanded by pointing a tag at an arbitrary position on the basic screen for plant operation monitoring, the instrument pattern 18, Both the trend screen 20 and the alarm history screen 22 can be directly expanded and displayed in a multi-window format, and each menu screen is first expanded to expand any one of these items as in the conventional case. The number of operating steps can be reduced from the operation of selecting and designating from there and expanding the screen of the target item, and the operability can be improved.

The format of the trend data area 13b of the tag file 13 can be changed as shown in FIG. When the sample period δ is changed several times for a certain tag, for example, the tag number TAG NO.1, it is possible to add a time stamp to each trend data and save the process data. For example, a lot of time data must be stored together with the process data, and the data area becomes large.

Therefore, as shown in FIG. 6A, every time the sample period δ is changed, the change time and the changed sample period δ are sequentially traced back from the final collection time T1-0, and a predetermined number of them are obtained. Here, the data is stored five times, and at the same time, the process data collected at each sample timing is sequentially traced back from the final data and stored by a predetermined number.

That is, the final collection time T1-0; the area 13b-0 for storing the sample cycle δ1-0, the sample cycle change time one time before T1-1; the area 13b-1, for storing the sample cycle δ1-1, ... ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,-, or number setting, the sampling cycle change time 4 times before T1-4; the area 13b-4 for storing the sampling cycle δ1-4 is provided, and together with this, the trend data k at the last sampling, the trend data k- at the sample timing one time before The area 13b-5 for storing the maximum number of trend data k-2, ... Of sample timings one or two times before is provided.

When a trend graph is displayed based on the trend data in such a storage format, as shown in FIG.
It becomes as shown in. Now, the display time width of the trend graph is set to X (time), the trend data included from the trend data at the last collection time up to X hours back is plotted, and the trend graph is displayed by linear interpolation. In this case, the sample period δ1-0 at the last collection time T1-0 and the sample period δ1-1 changed at T1-1 before the sample period change time is the same, and first,

[Equation 1] Then, the number p1 of trend data sampled in the current sampling period is obtained.

Then,

[Equation 2] Then, the number p2 of trend data sampled between T1-1 before the sampling period change time and T1-2 before the sampling period change time is obtained.

Thereafter, in the same manner, all the trend data sampled within a range not exceeding the maximum time width X of the trend graph are taken out, plotted by being separated by the time width of the corresponding sampling period, and the trend graph is obtained by linear interpolation. Is displayed as. The above explanation is TA
Although G NO.1 has been described, a trend graph is similarly created for the other tag numbers and displayed on the trend screen 20.

By collecting and displaying the trend data in this way, the process data whose sample period is changed can be flexibly displayed and the trend data area 13b in the tag file 13 can be saved. be able to.

As another embodiment of the present invention, a function as shown in FIG. 7 can be added to the display processing function of the trend screen 20 executed by the trend display processing section 21.
This is because the trend display processing unit 21 reads the trend data from the trend data area 13b of the specified tag number of the tag file 13 and displays it as the trend screen 20, and the alarm history data of the tag number from the alarm history data area 13c. Is read out, and the alarm history data is displayed at the corresponding time position on the trend graph according to the occurrence time data attached to the alarm history data.

Such a process can be easily realized by collecting the tag files 13 in units of tag numbers and performing a search process in the storage area assigned to the same tag number. There is no need to search for data with the same tag number between files that are managed independently of each other to achieve
The load on the CPU side can be reduced, and high-speed processing can be achieved.

As still another embodiment of the present invention, the format of the tag file 13 can be managed as a distributed database 13 'as shown in FIG. In this case, a file is created for each of the instantaneous data file 131, the trend data file 132, and the alarm history data file 133 on a tag number basis, and the files are associated with each other using the tag number as a key to perform a search process. Therefore, if a trend display or an alarm history display is requested from the instrument pattern of the instantaneous data of a certain tag, for example, the tag number TAG NO.1, the trend of the same TAG NO.1 is obtained from the instantaneous data file 131 of the tag number TAG NO.1. It is possible to display the desired trend graph or alarm history by accessing the file 132 or the alarm history data file 133 of TAG No. 1 to extract data.

[0047]

As described above, according to the invention of claim 1,
The tag file management means saves various process data of the monitored plant for each tag, and stores the instantaneous data and trend data in the tag file in association with the tag number, and displays one of the tags from the plant operation monitoring screen of the display device. When the command to display the instantaneous data or trend data is given by specifying, if the command is to display the instantaneous data, the instantaneous data is read from the tag file for the corresponding tag, displayed as an instrument pattern, and displayed. If the command is the display of trend data, the trend data for the corresponding tag is read from the tag file and displayed as a trend graph.
It is possible to directly select or switch the display item of the tag between the instantaneous data and the trend data, simplify the operating procedure of the operator, and improve the response speed of the system. Further, the tag increase / decrease process is easy because it is managed in tag units.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, the alarm history data of the monitored plant is also stored in the tag file in association with the tag number by the tag file management means. In addition to displaying the instantaneous data in the instrument pattern and trend graph for any tag directly from the plant operation monitoring screen of the display unit, the alarm history data for the alarm history data of the corresponding tag can also be displayed from the tag file. Since it is read out and displayed as an alarm history list, selection and switching of tag display items can be performed directly between instantaneous data, trend data and alarm history data, simplifying the operator's operating procedure. In addition, the system can be speeded up.

According to the invention of claim 3, since the tag file management means makes the tag file into a relational database format using the tag number as a key, in addition to the effect of the invention of claim 1 or 2, it is collected. The data can be used for various other purposes.

According to the fourth aspect of the present invention, the tag file management means uses the tag file as the trend data for each tag, and the data of the last sample time, the data of the time and the sample period when the sample cycle is changed, and the process at each sample timing. Data is saved, and if there is a trend graph display command, the trend graph is displayed by referring to the data of the last sample time, the time when the sample cycle was changed, and the data of the sample cycle. The file size can be reduced as compared with a tag file having a structure with a time stamp, and data processing can be speeded up and the system can be simplified.

[Brief description of drawings]

FIG. 1 is a block diagram showing a functional configuration of one embodiment of the present invention.

FIG. 2 is a structural diagram of a tag file in the above embodiment.

FIG. 3 is a flowchart showing a trend graph display processing procedure of the trend display processing unit in the above embodiment.

FIG. 4 is an explanatory diagram showing a simultaneous display screen of trend graphs of a plurality of tags by the trend display processing unit in the above embodiment.

FIG. 5 is a flowchart showing an alarm history display processing procedure of the alarm history display processing unit in the above embodiment.

FIG. 6 is a structural diagram of a tag file according to another embodiment of the present invention.

FIG. 7 is an explanatory diagram showing a simultaneous display function of a trend graph and an alarm history according to still another embodiment of the present invention.

FIG. 8 is a structural diagram of a tag file according to still another embodiment of the present invention.

FIG. 9 is a structural diagram of a conventional process data file.

FIG. 10 is a flowchart showing the operation of a conventional example.

[Explanation of symbols]

 11 Process Data Collection Section 12 Tag File Management Section 13, 13 'Tag File 13a Instantaneous Data Area 13b Trend Data Area 13c Alarm History Data Area 131 Instantaneous Data File 132 Trend Data File 133 Alarm History Data File 14 Display Device 15 Process Flow Screen 16 Tag number display 17 Flow display processing unit 18 Instrument pattern 19 Instrument pattern display processing unit 20 Trend screen 21 Trend display processing unit 22 Alarm history screen 23 Alarm history display processing unit 24 Item selection menu 25 Display item selection reception unit 26 Display item command processing Department

Claims (4)

[Claims] 1. A tag file management means for storing various process data of a monitored plant in a tag file in which instantaneous data and trend data for each tag are associated with a tag number, and a plant operation monitoring screen of a display device. From the tag file designated by the display item selection unit, and the display item selection unit for giving a display command of the instantaneous data or trend data by designating any one of the tags, the instantaneous data is read from the tag file, Instrument pattern display processing means for displaying the instrument pattern on the plant operation monitoring screen of the display device, and for the tag designated by the display item selection means, read the trend data from the tag file, and monitor the plant operation of the display device. Trend display processing means that displays a trend graph on the screen A plant operation monitoring device comprising: 2. A tag file management means for storing various process data of a monitored plant in a tag file, in which instantaneous data, trend data, and alarm history data of each tag are stored in a tag file in association with each other, and a display device. From the plant operation monitoring screen, display item selection means for designating any one of the tags and giving a display command of its instantaneous data, trend data or alarm history data, and for the tags designated by the display item selection means, the tag Reading the instantaneous data from the file and reading the trend data from the tag file for the instrument pattern display processing means for displaying the instrument operation pattern on the plant operation monitoring screen of the display device and the tag designated by the display item selecting means , Trends on the plant operation monitoring screen of the display device With respect to the trend display processing means for displaying in a graph, and the alarm history data of the tag designated by the display item selecting means, the alarm history data is read from the tag file and displayed as an alarm history list on the plant operation monitoring screen of the display device. An alarm history display processing means, and a plant operation monitoring device. 3. The plant operation monitoring device according to claim 1, wherein the tag file management means is a relational database using the tag file as a key. 4. The tag file management means stores, in the tag file, trend data for each tag, data of a final sample time, data of a time and a sample cycle at which a sample cycle is changed, and process data at each sample timing, The plant according to any one of claims 1 to 3, wherein the trend display processing means performs a trend graph display with reference to the data of the last sample time, the time when the sample cycle is changed, and the data of the sample cycle. Operation monitoring device.