JPH0464016A - Driving supporting apparatus - Google Patents

Abstract

PURPOSE:To understand the inference process well by selecting information of an explanatory diagram of the inference process in correspondence to an inference point designated by an operator, and displaying the information at a display device in accordance with information of a color change/text information table. CONSTITUTION:The presence or absence of abnormality in a process value of a plant 4 is detected by an abnormality detecting means 12 through an input processing means 11, and the generation of an abnormality is informed to an inference executing means 14. The content of the abnormality is detected and the reason for the abnormality are inferred with use of a knowledge base 13 in the means 14. The inferred result and guidance information for the reason of the abnormality are sent to a display device 2 by a guidance/result information means 15. Then, a color change/text interface means 16 detects whether to display the color change or the text in accordance with the inferred result of the means 14, and a required parameter is preserved in a color change/text information table 17. An explanatory diagram selecting means 20 displays the explanatory diagram of the inference process at the device 2 via a display means 21 by a selecting signal from an input device 3.

Description

Detailed Description of the Invention [Objective of the Invention] (Industrial Application Field) This invention infers the cause of an abnormality in a plant based on process values, and displays information necessary for an operator to take countermeasures. The present invention relates to a driving support device that is displayed on a vehicle.

(Prior Art) In general, what is called an operation support device detects an abnormality during plant operation, infers the cause of the abnormality, and notifies the inference result and explains the inference process. There is.

FIG. 6 is a block diagram showing the configuration of this type of conventional driving support device. This is mainly composed of an electronic computer 1 and a display device 2. Among these, the computer 1 includes an input processing means 11, an abnormality determination means 12, a knowledge base 13, an inference execution means 14, a guidance and result notification means 15, a color change interface means 16, an inference history explanation means 17A1 an inference history explanation diagram 18 , and inference explanation means 19.

In this operation support system, process values of the plant 2 are taken into the abnormality determining means 12 via the input processing means 11. The abnormality determination means 12 determines the presence or absence of an abnormality based on the process value, and when it is determined that there is an abnormality, the inference execution means 1
4 of the occurrence of an abnormality. The inference execution means 14, which has been notified of the occurrence of an abnormality, uses the knowledge base 13 composed of IF to THEN rules, etc., to detect and detect the contents of the abnormality based on the process values stored in the abnormality determination means 12. Estimate the cause of the abnormality.

The guidance and result notification means 15 sends to the display device 2 information on the inference result of the estimated cause of the abnormality and guidance information on how the operator should deal with the inference result. On the other hand, inference history explanation means 17
In A, based on the IF~THEN rule of Knowledge Base 13,
Information for explaining the inference process, that is, an inference process explanatory diagram 18 is generated.

Incidentally, as shown in FIG.
If this information is generated and displayed on the display device 2, a display screen 2a shown in FIG. 8 will be obtained.

In addition, the inference history explanation means 17A includes the IP part and TH of the rule.
The EN part is divided into two parts, events, intermediate events, etc. are searched from all the rules to check the relations, and the rule names are displayed in a tree structure. In this case, inference execution means 1
4 is to change the color of the rule name part where the condition is met.
Color change information by overwriting is added to the inference history explanatory diagram 18 via the color change interface means 1G. The inference explanation means 19 displays an explanation of the inference process on the display device 2 according to this inference process explanatory diagram 18 .

(Problem to be Solved by the Invention) The conventional driving support device described above displays the rule name in a tree structure to explain the reasoning process for the abnormality, and also displays the rule name in a tree structure.
The rule name when the conditions of the IP-THEN rule were satisfied was displayed in different colors. In this case, if the operator has the same level of knowledge as the person constructing the knowledge base, this display alone will be sufficient for understanding and judgment.

However, if the operator does not have deep knowledge of the knowledge base, simply displaying the rule names in a tree structure does not provide a direct explanation of the process of detecting the anomaly and estimating the cause of the anomaly. , it was difficult to fully understand and judge abnormalities, and rather, it was used for verification after the knowledge base was constructed by the person creating the knowledge base.

Furthermore, even when creating judgment rules, there is a possibility that there may be multiple rules, and the rule names become complicated, making it even more difficult for operators to understand.

This invention was made in order to solve the above problems, and it is possible to operate an abnormality for which the cause has been inferred, so that even an operator without deep knowledge of the knowledge base can fully understand the process of inference. The purpose is to obtain support equipment.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a display device for providing information to an operator, a knowledge base storing rules for inferring the causes of abnormality in a plant, and a system based on plant process values. an inference execution means for inferring the cause of the abnormality using the knowledge base;
Guidance and result notification means for displaying the inferred result and information to be dealt with with the result on the display device, and an inference process explanatory diagram that stores information about the inference process in text when the cause of the abnormality is inferred. and a color change/color change function that stores information on whether to display the information of this inference history explanatory diagram as text only, or to display the area including the text in a different color.
The apparatus comprises a text information table and an inference explanation means for selecting information in the inference history explanatory diagram corresponding to an inference point specified by an operator and displaying this information on the display device according to the information in the information table. be.

(Function) In this invention, information about the process of inference is stored in advance in text as an explanatory diagram of the process of inference, and
Information on whether to display this information as text only or to display the area including the text in a different color is stored as a color change/text information table, and the inference history is displayed in response to the inference point specified by the operator. Since the information in the explanatory diagram is selected and this information is displayed on the display device according to the information in the information table, even an operator without deep knowledge of the Chichu base can fully understand the process of inference.

(Embodiment) FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, the same reference numerals as in FIG. 6 indicate the same or corresponding parts.

Here, there is provided an inference history explanatory diagram 18 in which inference history information is stored in advance in the form of text, and the inference explanation means I9 selects and displays the contents. The inference explanation means 19 consists of an explanatory diagram selection processing means 20 and a display means 21, among which,
The explanatory diagram selection processing means 20 selects the information of the inference history explanatory diagram 18 according to the selection command from the input device 3 and passes it to the display means 21, and the display means 21 superimposes color change information and text information on this information and displays it on the display device 2. It is designed to be sent to In addition, a color change library and a text display library are set in the T) IF5 section of the knowledge base 13, and the color change interface means 16 selects between color change and text display according to the inference of the inference execution means 14. is determined and stored in the color change/text information table 17. The contents of this color change/text information table 17 are read out by the display means 21.

The operation of this embodiment configured as described above will be explained below according to the flowchart of FIG. 2 and also with reference to FIGS. 3 to 5.

First, process values of the plant 4 are taken into the abnormality determination means 12 via the input processing means 11 (step 101).
. The abnormality determination means 12 determines the presence or absence of an abnormality based on the process value, and when it is determined that there is an abnormality, the inference execution means 14
of the occurrence of an abnormality (step 102). The inference execution means 14, which has been notified of the occurrence of an abnormality, uses the knowledge base 13 composed of IP-THEN rules, etc., to detect and detect the contents of the abnormality based on the process values taken into the abnormality determination means 12. The cause of the abnormality is estimated, and the guidance and result notification means 15 sends information on the inference result of the cause of the abnormality and guidance information on how the operator should deal with the estimated cause of the abnormality to the display device 2. (Step 1
03〉.

Next, in the THEN section of the knowledge base 13, as shown in FIG. 4, a color change library and a text display library are set. The means 16 interprets whether it is a color change display or a text display (step 104), and inputs the requested parameter into the color change/text information table 1.
Save to 7. This color change/text information table ■7
As shown in Figure 3, the color change/text type a identifies whether it is a color change request or a text display request.
, the file name of the inference history explanatory diagram that specifies which inference history explanatory diagram to display, the display color r that specifies which color to display, and the area to change color specified by the end of the diagonal line. Upper left X coordinate X1. Upper left Y coordinate Y, lower right X coordinate X2
．． The lower right Y coordinate Y2 and the X coordinate X3 for specifying the text display position. Y coordinate Y3
, a display color r that specifies in which color the text is displayed, and text data Z of the text Z.

Next, when an operator selection signal is given to the explanatory diagram selection processing means 20 by the human power device 3, the explanatory diagram selection processing means 20
0 takes out the corresponding inference history explanatory diagram and passes it to the display means 21 (step 107). The display means 21 causes the display device 2 to display the passed inference history explanatory diagram (step log).
Then, the color change information and text information of the color change/text information table 17 are imported (step 108).
, is displayed superimposed on the information in inference history explanatory diagram 18.
(Step 110).

FIG. 5 shows an example of a display screen displayed on the display device 2 through the above processing. In this case, if the condition part A of the rule 1 for insufficient number of pumps in operation in the knowledge base 13 is satisfied, a diagram explaining the reasoning process created in advance is displayed on the display device 2. Next, coordinate data (Xt
, Yt), (X2.

The color of the rectangular frame specified by Y2) is changed, and when the condition part C of the pump operation shortage rule 2 is satisfied, the text Z is displayed from the coordinates of (X3.Y3).

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
FIG. 2 is a flowchart for explaining the operation of the embodiment, FIGS. 3 and 4 are explanatory diagrams for explaining the configuration of the main elements of the embodiment, and FIG. 5 is a flowchart for explaining the operation of the embodiment. An example of a display screen for explanation, FIG. 6 is a block diagram showing the configuration of a conventional driving support device, FIG. 7 is an explanatory diagram for explaining the configuration of the main elements of the device, and FIG. 8 is a diagram of the device. This is an example of a display screen for explaining the operation. DESCRIPTION OF SYMBOLS 1...Electronic computer, 2...Display device, 3...Input device, 11...Input processing means, 12...Anomaly determination means, 13...Knowledge base, 14...Inference execution means ,1
5... Guidance and result notification means, 16... Interface means, 17... Color change/text information table, 18... Inference history explanation diagram, 19... Inference explanation means, 20... Explanatory diagram selection processing means, 21...display means. Applicant's representative: Sato - According to this embodiment, when an abnormality occurs,
The information or text that the operator wants to confirm, or the area containing this text, can be displayed in a different color, making it possible to take prompt measures for abnormalities without having deep knowledge of the knowledge base. be able to. [Effects of the Invention] As is clear from the above explanation, according to this invention,
When the cause of an abnormality is inferred, the inference process explanatory diagram that stores information about the inference process in text is displayed, and the information in this inference process explanatory diagram is displayed next to the text, or the area containing the text is displayed in color. Select the color change/text information table that stores information on whether to change the color and display it, and select the information in the inference history explanatory diagram corresponding to the inference point specified by the operator, and change this information according to the information in the color change/text information table. Since the information is displayed on a display device, even an operator without deep knowledge of the knowledge base can fully understand the inference process. Seat 1 Diagram 2 Diagram 17 Machine tLζ/Tekinet・虞をLong Tape゛几%3 Diagram 6 Diagram 5

Claims (1)

[Claims] A display device for providing information to an operator, a knowledge base storing rules for inferring the cause of an abnormality in the plant, and inference execution for inferring the cause of the abnormality using the knowledge base based on plant process values. means, guidance and result notification means for displaying the inferred result and information to be dealt with in the result on the display device, and inference in which information about the process of the inference is stored in text when the cause of the abnormality is inferred. A history explanatory diagram, a color change/text information table that stores information on whether to display the information of this inference history explanatory diagram as text only, or display the area including the text in a changed color, and an operator specification. A driving support device comprising: inference explanation means for selecting information in the inference history explanatory diagram corresponding to the inference point, and displaying this information on the display device according to the information in the information table.