JPS63246615A - Process monitoring apparatus - Google Patents

Abstract

PURPOSE:To always perform the optimum display corresponding to an operation state, by changing over a picture corresponding to the degree of an abnormal event or by making it possible to display detailed data. CONSTITUTION:The state of a process 1 is taken in an industrial computer 2 and subjected to editing processing by a process data processing part 5. An inference processing part 8 is started in parallel to this processing. This inference processing part 8 performs inference on the basis of a knowledge base 9 bringing the state of a plant and picture display data to one knowledge set in an if-then operation mode at a picture unit. A picture display part 6 compares the inference from the inference processing part 8 with the picture displayed at the present time and the data thought to be necessary at that point in time is subjected to editing processing to be displayed on a display device 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a process monitoring device having a manual machine interface such as a CRT screen for monitoring and controlling plant systems.

[Conventional technology]

Conventionally, there has been a device of this type as shown in FIG. Figure 3 is a block diagram showing the configuration of a conventional process monitoring device, in which (1) is a process, (2) is an industrial computer, (3) is a CRT display device, and (4) is an input device for screen selection. , (5) is a process data processing section, (6) is a screen display section, and (7) is data for screen display.

Next, the operation will be explained. The status of the process (1) is inputted from various sensors and imported into the industrial computer (2). This captured data is edited and processed in the process data processing section (5) and sent to the screen display section (6). The screen number you want to display is displayed on the screen display section (6).
is stored, and when the operator selects the desired NO using the screen selection input device (4), the screen display data (7) is stored.
) is selected, edited according to the procedure described in the data, and displayed on a CRT in the form of numerical display, salary graph display, trend graph display, graphic display, etc.
Displayed on the display device (3). This displayed screen is
It is displayed until the operator selects another screen number using the screen selection input device (4).

[Problem that the invention seeks to solve]

The conventional process monitoring equipment described above is configured as described above, so when an abnormal situation occurs and an operator wants to monitor the movement of the plant, the operator can check the abnormality of the plant. It is necessary to memorize which screen the status is displayed on or to switch screens one after another to display the desired screen, which may result in different monitoring efficiency depending on the ability of the operator, or in the event of an accident. There have been problems, such as the fact that the operator may become so upset that he or she may not be able to immediately display the screen containing the plant status that they wish to display.

This invention was made to solve this problem, and it is possible to display detailed information about an abnormality or automatically switch the display screen depending on the degree of the abnormal event and the screen currently displayed. It is an object of the present invention to provide a monitoring device that can display an appropriate display according to the driving state.

[Means for solving problems]

The monitoring device according to the present invention has if −
The thenO type has a knowledge base that combines plant status and screen display information into one knowledge set for each screen.
We provide an inference processing unit that makes inferences based on that knowledge base.
We decided to start this from the screen display section.

[Effect]

In this invention, the screen display unit compares the inference from the inference processing unit with the currently displayed screen, edits and processes data that is considered necessary at that time, and displays the data on the display device. Displays can be automatically performed according to plant events.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a plant monitoring device according to the present invention. In the figure, the same reference numerals as in FIG. be.

Further, FIG. 2(a) #-j is an example of a knowledge base for all monitoring in the knowledge base, and FIG. 2(b) is an example of a knowledge base corresponding to a screen.

Next, the operation of the apparatus shown in FIG. 1 will be explained.

As in the past, the status of the process (1) is inputted by various sensors and taken into the industrial computer (2). The captured data is edited in a process data processing section (5). In addition, the screen display unit (6) stores the screen number, and when the operator selects the screen number to be displayed from the screen selection input device (4), the screen display data (7) is displayed. The relevant data is selected and edited according to the procedure described in the data, and the numerical display is displayed.
The information will be displayed on the CRT display device (3) in the form of a bar graph display, trend graph display, graphic display, etc., and in the present invention, the inference processing section (8) is activated in parallel with this processing. The inference processing unit (8) accesses the knowledge base (9) for the overall monitoring knowledge set as shown in FIG. I do. The overall monitoring knowledge base is for monitoring major failures in the entire plant, and is subject to automatic screen switching. If the data "A system pressure = 60" and "Pump A - stop" exist in the data edited by the process data processing unit (5), first, rule 1 in Fig. 2 (a) applies.

As a result, the data "A system pressure abnormality" is generated.
Rule 10 is applied to this data.

As a result, data called "A system abnormality" is generated, and rule 20 is further applied to this data.

When rule 20 is applied, the information "Screen No. 2 display" in the then section is sent to the screen display section (6).

The screen display unit (6) extracts the corresponding data from the screen display data (7) based on the screen number and displays screen number 2. “Screen No.” in the overall monitoring knowledge base
, n display'' cannot be obtained, the knowledge base for each screen designated by the screen display unit (6) is accessed, and the same processing as in the case of the overall monitoring knowledge base is performed.

The knowledge base in units of screens is used for routine monitoring, and in case an accident occurs, the screens are not switched as shown in Figure 2 (b), but detailed information display, enlarged display, etc. I do. As described above, optimal display can be performed by accessing different knowledge bases depending on the plant event at that time.

In the above embodiments, the case of a CRT display device has been described, but the present invention is not limited to this and can also be implemented with an LED display, a liquid crystal display, or the like.

Further, in the above embodiment, the inference processing unit and the knowledge base are provided within the industrial computer, but a dedicated device may be connected outside the industrial computer, and the same effects as in the above embodiment can be obtained.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to switch the screen or display detailed information depending on the degree of the abnormal event, so the operator can remember which plant event is included in which screen. Since there is no need to keep the screen in place, and unnecessary screen switching can be prevented, monitoring efficiency can be improved and appropriate decisions can be made in the event of an accident. Furthermore, since the knowledge base is a knowledge set for each display screen, there is also the effect that inference can be performed at high speed.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a plant monitoring device according to the present invention, FIG. 2 is a diagram showing an embodiment of the knowledge base according to the present invention, and FIG. 3 is a block diagram showing the configuration of a conventional process monitoring device. (1) Process, (2) Vi industrial computer, (3)
is a CRT display device, (4) is a screen selection input device, (5 is
) is the process data processing section, (6) is the screen display section, (7
) is screen display data, (8) is an inference processing unit, and (9) is a knowledge base. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (2)

[Claims] (1) The process status input from various sensors installed in the plant is processed by the process data processing unit, and the screen display unit displays data in a predetermined screen format on the display device according to the input from the screen selection input device. A process monitoring device comprising an if-then type knowledge base and an inference processing unit, the inference processing unit scanning the knowledge base in response to information from the process data processing unit to determine the state of the process. A process monitoring device characterized in that the inference is made and information corresponding to the event of the process is sent to the screen display section, and the screen display section selects a screen to be displayed on the display device based on this information. (2) The process according to claim 1, wherein the knowledge base is comprised of a total monitoring knowledge base that monitors the entire plant and a knowledge base that corresponds to the screen displayed on the display device. Monitoring equipment.