JP3196840B2 - Failure diagnosis support system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a failure diagnosis support system.
Belongs to the Temu, in particular, fault diagnosis to perform the information of the phenomenon, which is input in order to perform the failure diagnosis, the presentation of candidates for the cause and research methods of failure to enter the knowledge base search and inference engine of
Belongs to a support system .

[0002]

2. Description of the Related Art In recent years, as the configuration of a system such as a plant or a production facility has become more complicated, when a failure occurs in a system, it has become increasingly difficult to estimate the cause from the phenomenon of the failure. For this reason, various failure diagnosis support systems have been proposed in which a cause of a failure and a candidate for an investigation method are presented based on a phenomenon of a failure in a complicated system.

In such a failure diagnosis support system, it is important to display an image when confirming a cause and an investigation method from a failure that has occurred, and a conventional failure diagnosis combining a diagnosis tree and an image (image data). As a diagnosis support system, for example, there is a system disclosed in Japanese Patent Publication No. 7-38240 (first prior art).

That is, in the first prior art, an image input device for reading, as image data, images of a plurality of nodes, each of which contains information necessary for inference for finding a fault, and an image input device for reading the images. A computer that stores the image data stored therein and stores a coordinate position on the display screen of each of the nodes, and a display unit that displays an image corresponding to the image data stored in the computer in correspondence with the coordinate position on the display screen. By determining the connection relation between the nodes in the image displayed on the display screen by specifying the coordinate position of the node on the display screen, the computer stores the connection relation between the coordinate positions of the node and forms a tree-like structure. On the display screen as an image of the knowledge structure of the user, and the connection displayed on the display screen for failure detection. A coordinate designation device that designates a node used for inference in the contextual image by designating the position of the node on the display screen, wherein the computer designates the node designated by the coordinate designation device as a non-designated node. It is displayed on the display screen so that it can be distinguished. In addition, a video disk is provided for storing video information of the fault finding equipment associated with the fault finding procedure, and when there is an unknown point for fault detection, the resolution information stored on the video disk is stored. It is designed to eliminate unclear points by using it. Here, the input of expert knowledge to the fault finding device is performed by inputting a drawing describing knowledge organized as a tree-like knowledge structure tree to a computer by an image input device. In addition, the relation of the node portion of the tree-like knowledge is selected and instructed from the display device via the coordinate designation device, that is, the correlation of the coordinate position on the image data is performed, and the inference of the failure discovery is advanced, and if necessary, the television is advanced. It is disclosed that a failure is discovered by sequentially operating interactively with reference to a screen.

Another conventional failure diagnosis support system is disclosed in, for example, Japanese Patent Application Laid-Open No. 6-34403 (second prior art).

That is, in the second prior art, a three-dimensional solid model of a faulty device and a sectional view of the device are displayed on a system diagram displayed as a result of the fault diagnosis.
Further, a three-dimensional solid model of a predetermined part specified by the operator is displayed on the cross-sectional view displayed together with the three-dimensional solid model. Further, information on failure recovery of a predetermined part specified by the operator is displayed together with the three-dimensional solid model of the part. As described above, by displaying the three-dimensional solid model of the device corresponding to the failure and the cross-sectional view of the device on the system diagram displayed as a result of the diagnosis, the operator can determine the external shape of the device considered to have a failure. And information on the structure of the device can be visually captured. Also,
The operator can visually grasp the external shape of the component as a three-dimensional solid model by designating on the screen a component constituting the device displayed on the cross-sectional view that is expected to fail. Will be possible. In addition, by displaying the information related to the failure recovery of the specified part, it is possible to more reliably identify the failure location based on information such as the interaction between the part specified by the operator with other parts and the number of past failures Is disclosed.

Another conventional failure diagnosis support system is disclosed in, for example, Japanese Patent Laid-Open No. 9-26805 (third prior art).

That is, in the third prior art, recording means for continuously recording input / output signals of a programmable controller for facility control and information on the state of internal flags of the programmable controller and changes thereof together with time information, and recorded information. Display means for displaying information as a time chart, evaluation means for evaluating the recorded information by comparing the recorded information with pre-recorded information during normal operation, and an evaluation result by the evaluation means. It is disclosed that the system is provided with cause pursuit / recovery instructing means for estimating the operation state of equipment and the cause at the time of occurrence of a failure and instructing a corresponding recovery method using the failure determination knowledge base. here,
The cause investigation / recovery instructing means and the failure determination knowledge base are constructed as an expert system, and include means for registering a new rule in the failure determination knowledge base.
In addition, it is disclosed that there is provided a notifying means for notifying the evaluation result and the cause pursuit result by the evaluation means and the cause pursuit / recovery instruction means and the restoration instruction.

[0009]

However, first,
In the second and third prior arts, the cause and the investigating method are not distinguished, and the holding and display of the investigating method are not considered, so that even if a cause candidate is presented, the investigating method is not clearly specified. there were.

In the first, second and third prior arts,
Because the interface is two-dimensional, it is not possible to simultaneously display the relationship between the combination of phenomena, causes and investigation methods. There was also a problem that it was difficult.

The present invention has been made in view of the above problems, and has as its object to display a diagnostic information display on a three-dimensional graph on an operation screen and display the detailed information on a cube display. By doing so, a failure diagnosis support system that simultaneously specifies the relationship between the phenomenon, the cause, and the combination of
The point is to provide a stem .

[0012]

The gist of the invention described in claim 1 of the present invention is to present a cause of a failure and a candidate of an investigation method based on information of a phenomenon input for performing a failure diagnosis. A failure diagnosis support system having a function to execute, an operation interface, a system engine, and a database, wherein the operation interface is provided for a combination of a phenomenon, a cause, and a search method designated by a pointer controlled by an operation processing unit. An interactive interface function that displays detailed information about the relationship between phenomena, causes, and investigation methods.In addition, when displaying combinations of phenomena, causes, and investigation methods that are information for performing fault diagnosis, A function is provided to display three-dimensionally detailed information about the relationship between the phenomenon and the cause and the investigation method in the combination of the cause and the investigation method. The operation processing unit has a function of arranging and displaying combinations of the searched phenomena, causes, and investigation methods at positions where the association of each item exists on the three-dimensional graph, and the system engine is configured to Has a function to search for causes and investigation methods related to the detected phenomena, and to extract all combinations of phenomena, causes and investigation methods related to the retrieved information as information for performing fault diagnosis. Equipped with an engine and a knowledge translator,
The database includes equipment information data, knowledge data, and detailed data, and the equipment information data stores information such as an equipment name and an installation position input on an equipment diagnosis support screen,
The knowledge data stores the phenomena, causes, and related methods of the failure case, which have been made into knowledge by the knowledge translator, and the detailed data describes the combination of the phenomena, causes, and the investigated methods in the knowledge data. And detailed data for storing image data, and further includes the operation processing unit, the phenomenon receiving unit, the diagnostic information receiving unit, the three-dimensional graph coordinate creating unit,
A three-dimensional information display part, a three-dimensional graph pointer identification part, a detailed information inquiry part, a detailed information display part, and a detailed information pointer identification part, wherein the phenomenon receiving part receives the phenomenon of the fault that has occurred. An operation interface with an operator, having a function of outputting data of a received phenomenon to a diagnostic information receiving unit, wherein the diagnostic information receiving unit receives the phenomenon received by the phenomenon receiving unit, on the basis of the phenomenon, makes an inquiry of diagnostic information to the search and inference engine, summarizes the candidate and the phenomenon and research methods related to their multiple causes, the function to receive the diagnostic information column from the search and inference engine The three-dimensional graph coordinate creating unit has a function of creating a coordinate axis of a phenomenon, a cause, and an investigation method from the diagnostic information sequence received from the diagnostic information receiving unit; The information display unit has a function of displaying a diagnostic information sequence received from the diagnostic information receiving unit in a three-dimensional coordinate space, and the three-dimensional graph pointer specifying unit specifies a position of the pointer designated by an operator. The detailed information inquiry unit inquires of a search / inference engine for detailed information, receives a description or image data that is detailed information of a combination of a phenomenon, a cause, and an investigation method from the search / inference engine, A three-dimensional display of detailed information on the item specified by the pointer specifying unit on the three-dimensional graph, which is indicated by the worker with the pointer, and by the indicated point position pointer, which performs phenomenon, causes and switching of display of the image data of the combination of survey methods, the Stem engine
Search for causes and investigations related to the phenomenon entered.
And all phenomena and causes related to the retrieved information
And the information used when performing a fault diagnosis.
The operation processing unit executes the extraction step.
The combination of phenomena, causes, and investigation methods
Array and table at the position where the relation of each item exists on the original graph
And the operation processing unit executes the
Set of phenomena, causes and investigation methods specified by the
The relationship between phenomena, causes, and investigation methods
Steps to display detailed information of all the fault diagnosis
The combination of phenomena, causes and investigation methods that are the information of
When making a presentation, use a combination of phenomena, causes and investigation methods.
There is a detailed examination of the relevance Nitsu of the phenomenon and the causes and investigate how
Information is displayed three-dimensionally as a three-dimensional graph on the operation screen
The present invention resides in a failure diagnosis support system characterized by executing the following steps .

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a functional block diagram illustrating an embodiment of a failure diagnosis support system 100 including the operation processing unit 32 of FIG.

When a failure occurs, the cause cannot be specified in the initial work of the failure diagnosis in many cases, so that there are often a plurality of cause candidates. In addition, it is important to know the investigation method in order to conduct the investigation to identify the cause.

Therefore, the failure diagnosis support system 100 according to the present embodiment has a function of presenting a cause of a failure and a candidate for an investigation method based on information of a phenomenon input for performing a failure diagnosis. A system engine 36, an operation interface 31, and a database 39 are provided.

The operation interface 31 shown in FIG. 1 displays detailed information on the relationship between the phenomenon, the cause, and the investigation method in the combination of the phenomenon, the cause, and the investigation method designated by the pointer 24 controlled by the operation processing unit 32. When displaying a combination of phenomena, causes, and investigation methods that are information for performing fault diagnosis, the relationship between the phenomenon, cause, and investigation method in the combination of phenomena, causes, and investigation methods A function for displaying detailed information on the three-dimensionally three-dimensionally includes an operation processing unit 32 and three display screens (a facility information registration screen 33, a failure diagnosis support screen).
And a repair report creation screen 35).

The equipment information registration screen 33 can be used to register equipment names and installation locations. Failure diagnosis support screen 34
Can be used by an operator to interact with the system. The repair report creation screen 35 can be used to create a work report such as diagnosis and repair.

The operation processing unit 32 has a function of arranging and displaying combinations of the retrieved phenomena, causes, and investigation methods at positions where the association of each item exists on the three-dimensional graph.

The system engine 36 shown in FIG. 1 searches for a cause and an investigation method related to the input phenomenon and performs a failure diagnosis on all combinations of phenomena, causes and investigation methods related to the searched information. And a search / inference engine 37 and a knowledge translator 38.

The knowledge translator 38 supports a failure diagnosis.
A function is provided for registering information input on the screen 34 in knowledge data 41 described later.

The search / inference engine 37 has a function of inquiring from a phenomenon input from the repair report creation screen 35 and obtaining an answer.

The database 39 shown in FIG. 1 includes equipment information data 40, knowledge data 41, and detailed data 42.

The equipment information data 40 is a failure diagnosis support screen.
The information (specifically, equipment name, installation position, etc.) input at 34 is stored. The knowledge data 41 stores related data (specifically, phenomena, causes, investigation methods, etc.) of a failure case that has been made into knowledge by the knowledge translator 38. The detailed data 42 includes a description of a combination of a phenomenon, a cause, and an investigation method in the knowledge data 41 and detailed data 42 (specifically, description, image, and the like) for storing image data.

More specifically, the operation processing unit 32 of the present embodiment
Will be described. FIG. 2 is a functional block diagram for explaining an embodiment of the operation processing unit 32 of the present invention.

The operation processing unit 32 includes a phenomenon receiving unit 1, a diagnostic information receiving unit 2, a three-dimensional graph coordinate creating unit 3, a three-dimensional information display unit 4, a three-dimensional graph pointer specifying unit 5, and a detailed information inquiry unit 6. , A detailed information display unit 7 and a detailed information pointer specifying unit 8.

The phenomenon accepting section 1 is an operation interface with an operator for accepting a phenomenon of a trouble that has occurred, and has a function of outputting data of the accepted phenomenon to the diagnostic information receiving section 2. I have.

The diagnostic information receiving unit 2 receives the phenomenon accepted by the phenomenon accepting unit 1 and makes an inquiry (diagnosis information inquiry) to the search / inference engine 37 based on the phenomenon, and determines a plurality of candidates for the cause. A diagnostic information sequence search / inference engine 37 that summarizes phenomena and investigation methods related to them.
Has a function to receive from.

The three-dimensional graph coordinate creating unit 3 has a function of creating a coordinate axis of a phenomenon, a cause, and a survey method from the diagnostic information sequence received from the diagnostic information receiving unit 2. In the present embodiment, a phenomenon is assigned to the X axis, a cause is assigned to the Y axis, and an investigation method is assigned to the Z axis.

The three-dimensional information display unit 4 includes the diagnostic information receiving unit 2
Has a function of displaying the diagnostic information sequence received from the maker in a three-dimensional (XYZ) coordinate space.

The three-dimensional graph pointer specifying unit 5 specifies the position (pointer position) of the pointer 24 specified by the operator.

The detailed information inquiry unit 6 makes an inquiry about detailed information to the search / inference engine 37 and receives from the search / inference engine 37 a description and image data which are detailed information of a combination of a phenomenon, a cause, and an investigation method.

FIG. 3 is an example of a three-dimensional graph display of diagnostic information executed by the operation processing unit 32 of FIG. The example illustrated in FIG. 3 indicates that the phenomenon F3, the cause C2, and the investigation method 2 have an association. As a means for searching and displaying such detailed information, the present embodiment employs a detailed information display unit 7.
It has an (operation processing unit 32), and it is possible to immediately and stereoscopically display detailed information on an item specified by the pointer specifying unit 5 on the three-dimensional graph by the operator with the pointer 24.

For example, in the three-dimensional graph, a phenomenon F1, a phenomenon F2, a phenomenon F3, and a phenomenon F4 are arranged on the X axis,
The cause C1, the cause C2, the cause C3, and the cause C4 are arranged on the axis, and the investigation methods 1, 2, 3, and 4 are arranged on the Z axis.

At this time, the cause of the phenomenon F3 (X-axis) is the cause C2 (Y-axis), and its investigation method is investigation method 2 (Z-axis).
Axis) is displayed three-dimensionally. Such a function of displaying the details of the information displayed three-dimensionally on the three-dimensional graph is executed by the three-dimensional graph pointer specifying unit 5 and the detailed information inquiry unit 6.

That is, the three-dimensional graph pointer specifying unit 5 specifies the position (pointer position) of the pointer 24 pointed by the operator, and accordingly, the detailed information inquiry unit 6
Makes an inquiry about detailed information to the search / inference engine 37 and receives from the search / inference engine 37 a description and image data that are detailed information of a combination of a phenomenon, a cause, and an investigation method.

As described above, the diagnostic information display is displayed on the three-dimensional graph on the operation screen, and the detailed information is displayed on the cubic display, so that the relationship between the phenomenon, the cause, and the combination of the investigation methods can be simultaneously specified. As a result, it is possible to improve the work efficiency of the failure diagnosis. In addition, three pieces of information (combinations of phenomena, causes, and investigation methods) that are important for failure diagnosis support can be clearly shown on a three-dimensional graph, and further detailed information (description, images) can be displayed on the cube in a related manner. , Phenomena, causes, and combinations of investigation methods can be displayed simultaneously, and as a result, the determination of the investigation procedure by the operator can be simplified.

FIG. 4 shows the failure diagnosis support system 10 of FIG.
0, the structure of the knowledge data 41 and the detailed data 42,
And the relationship between the knowledge data 41 and the detailed data 42.

The knowledge data 41 is stored in the failure information table 5
1. Phenomenon information table 52, cause information table 53, key
The inspection method table 54 is provided.

The failure information table 51 includes, as failure information, failure information numbers, history data such as the date and time of repair of a repair report, the date and time when a failure occurred, and a number (N
o. ) And failure information such as a number (No.) specifying the cause are stored in association with the number as an index.

In the phenomenon information table 52, phenomenon information such as a number (No.) for identifying the phenomenon, a description of the phenomenon, and image data visualizing the phenomenon is stored in association with the number using the number as an index.

The cause information table 53 contains the cause No. ,
Explanation of the cause, image data visualizing the cause, and method of investigating the cause No. Are stored in association with each other using the number as an index.

In the survey method table 54 , the survey No. ,
A description of the survey method and survey information such as image data visualizing the survey method are stored in association with the number as an index.

The related information in the failure information table 51 and the phenomenon information table 52 is the phenomenon number. Are associated with each other. Also, a text data table 5 to be described later
5 and the image data table 56.
And image data names. The cause information table 53 has the same structure as the phenomenon information table 52, and also stores the relation to the investigation method table 54.

On the other hand, the detailed data 42 has a text data table 55 and an image format data table 56.

The text data table 55 includes a phenomenon description stored in the phenomenon information table 52, a cause description stored in the cause information table 53, and an investigation method table.
The description of the survey method stored in 54 is stored as detailed data in association with it.

The image format data table 56 includes a phenomenon image stored in the phenomenon information table 52, a cause image stored in the cause information table 53, and an investigation method table.
The investigation method image stored in the storage 54 is stored as detailed data in association with the inspection method image.

FIG. 5 shows an example of a cube display of detailed information performed by the operation processing section 32 of FIG.

The detailed information display section 7 of the operation processing section 32 displays the detailed information as a cube as shown in FIG. In response, the detailed information pointer specifying unit 8 switches the display of the image data of the combination of the phenomenon, the cause, and the investigation method according to the point position indicated by the pointer 24 by the operator.

That is, the diagnostic information display is displayed on the three-dimensional graph on the operation screen, and the detailed information is displayed on the cube display, so that the relationship between the phenomenon, the cause, and the combination of the investigation methods can be simultaneously specified. As a result, the work efficiency of the failure diagnosis can be improved. Also,
The three pieces of information (combinations of phenomena, causes, and investigation methods) that are important for failure diagnosis support are clearly displayed on a three-dimensional graph, and further detailed information (description, images) can be displayed in association with a cube. , The relationship between the combination of the cause and the investigation method can be displayed at the same time, and as a result, the determination of the inspection procedure by the operator can be simplified.

Next, an embodiment of a failure diagnosis support method using the failure diagnosis support system 100 will be described. In the failure diagnosis support method of the present embodiment, a cause and an investigation method related to the input phenomenon are searched, and all the phenomena, causes and investigation methods related to the searched information are combined when performing the failure diagnosis. The step of extracting the information is performed by the system engine 36. Further, the operation processing unit 32 executes a step of arranging and displaying combinations of the searched phenomena, causes, and investigation methods at positions where the associations of the respective items exist on the three-dimensional graph. Further, a step of displaying detailed information on the relationship between the phenomenon, the cause, and the investigation method in the combination of the phenomenon, the cause, and the investigation method designated by the pointer 24, the phenomenon, the cause, and the information that are information when performing failure diagnosis. When displaying a combination of survey methods,
The operation processing unit 32 executes a step of three-dimensionally displaying detailed information on the relationship between the phenomenon, the cause, and the investigation method in the combination of the phenomenon, the cause, and the investigation method.

The failure diagnosis support method according to the present embodiment will be described in more detail. FIG. 6 shows the failure diagnosis support system 1 of FIG.
10 is a flowchart for explaining the operation of the 00.

The data search of the database of the diagnostic information sequence displayed on the failure diagnosis support screen 34 is executed by the search / inference engine 37.

A phenomenon that the operator confirms when a trouble occurs and is subjected to the input / temporary storage processing (processing step 61) is referred to as a phenomenon F1.

FIG. 3 shows an example of a three-dimensional graph display of the obtained diagnostic information sequence as a result of performing the sequential search in each step described below.

(Step 1): The causes C1 and C2 related to the phenomenon F1 are searched by the judgment processing (processing steps 62 and 64).

(Step 2): By the judgment processing (processing step 62), the judgment processing (processing step 64) and the processing step 65, the phenomena F1 and F2 related to the cause C1 are searched.

(Step 3): The phenomena F1 and F3 related to the cause C2 are searched by the judgment processing (processing step 62), the judgment processing (processing step 64) and the processing step 65.

(Step 4): The cause C2 related to the phenomenon F3 is searched by the judgment processing (processing step 62) and the judgment processing (processing step 63).

(Step 5): By the judgment processing (processing step 62), the judgment processing (processing step 64) and the processing step 65, the phenomenon F2 related to the cause C3 is searched.

(Step 6): By the judgment processing (processing step 62), the judgment processing (processing step 64), the judgment processing (processing step 66) and the processing step 67, the investigation methods 1 and 2 related to the cause C1 are searched. You.

Thereafter, a search is executed in the same manner as described above (step N
-1): The cause C4 related to the phenomenon F4 is searched by the judgment processing (processing step 62) and the processing step 63. (Step N): Judgment processing (processing step 62)
The processing is terminated by the determination processing (processing step 64), the determination processing (processing step 66), and the determination processing (processing step 68).

Using FIGS. 2 and 3, a failure diagnosis support screen 3
The operation of the three-dimensional graph display of No. 4 will be described.

When the information position on the graph is designated by the pointer 24 by the operator, certain information is specified by the pointer specifying unit 5 on the three-dimensional graph, and the relevant information is simultaneously emphasized. In the example of FIG. 3, the information 25 is specified, and the information 26 and the information 27 related to the coordinates of the information 2 (the phenomenon F3, the cause C2, and the investigation method 2) are emphasized.

Using FIGS. 2 and 5, a failure diagnosis support screen 3
The detailed information display operation of No. 4 will be described.

An inquiry for detailed information relating to the specific information specified by the pointer specifying unit 5 (operation processing unit 32) on the three-dimensional graph is performed by the detailed information inquiry unit 6 (operation processing unit 32), and the searched detailed information Is displayed in a cubic shape by the description and image data detailed information display section 7 (operation processing section 32). An example is shown in FIG.

As shown in FIG. 5, a description of a combination of a phenomenon, a cause, and an investigation method is displayed on three surfaces on the screen, and image data is displayed on the front. Switching can be performed by specifying an item with the pointer 24 of the image display of the combination of the phenomenon, the cause, and the investigation method.

That is, the diagnostic information display is displayed on the three-dimensional graph on the operation screen, and the detailed information is displayed on the cube display, so that the relationship between the phenomenon, the cause, and the combination of the investigation methods can be simultaneously specified. As a result, the work efficiency of the failure diagnosis can be improved. Also,
The three pieces of information (combinations of phenomena, causes, and investigation methods) that are important for failure diagnosis support are clearly displayed on a three-dimensional graph, and further detailed information (description, images) can be displayed in association with a cube. , The relationship between the combination of the cause and the investigation method can be displayed at the same time, and as a result, the determination of the inspection procedure by the operator can be simplified.

In the present embodiment, the present invention is not limited to this, and a diagnosis work (eg, such as analysis of the cause of a failure and repair) suitable for applying the present invention is performed.
Software failure diagnosis, automatic production line abnormality diagnosis, etc.). Further, the number, position, shape, and the like of the constituent members are not limited to the above-described embodiment, but can be set to numbers, positions, shapes, and the like suitable for carrying out the present invention. In each drawing, the same components are denoted by the same reference numerals.

[0069]

According to the present invention, the diagnostic information display is displayed on the three-dimensional graph on the operation screen, and the detailed information is displayed on the cubic display, thereby simultaneously indicating the relationship between the phenomenon, the cause, and the combination of the investigation methods. As a result, the work efficiency of the failure diagnosis can be improved.

Further, three pieces of information (combinations of phenomena, causes, and investigation methods) important for failure diagnosis support are clearly indicated on a three-dimensional graph, and further detailed information (description, images) is displayed in association with a cube. Therefore, it is possible to simultaneously display the relationship between the combination of the phenomenon, the cause, and the investigation method, and as a result, it is possible to simplify the determination and determination of the investigation procedure by the operator.

[Brief description of the drawings]

FIG. 1 is a functional block diagram for explaining an embodiment of a failure diagnosis support system including the operation processing unit of FIG. 2;

FIG. 2 is a functional block diagram illustrating an embodiment of an operation processing unit according to the present invention.

FIG. 3 is an example of a three-dimensional graph display of diagnostic information executed by an operation processing unit in FIG. 2;

FIG. 4 shows the structure of knowledge data and detailed data and the relationship between the knowledge data and detailed data in the failure diagnosis support system of FIG.

FIG. 5 is an example of a cube display of detailed information performed by the operation processing unit in FIG. 2;

FIG. 6 is a flowchart for explaining the operation of the failure diagnosis support system of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Phenomenon receiving part 2 Diagnostic information receiving part 3 Three-dimensional graph coordinate creation part 4 Three-dimensional information display part 5 Pointer identification part on three-dimensional graph 6 Detailed information inquiry part 7 Detailed information display part 8 Pointer identification part for detailed information 24 Pointer 31 Operation Interface 32 Operation Processing Unit 33 Equipment Information Registration Screen 34 Failure Diagnosis Support Screen 35 Repair Report Creation Screen 36 System Engine 37 Search / Inference Engine 38 Knowledge Translator 39 Database 40 Equipment Information Data 41 Knowledge Data 42 Detailed Data 51 Failure Information Table 52 Phenomenon information table 53 Cause information table 54 Investigation method table 55 Text data table 56 Image data table 100 Failure diagnosis support system

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G08B 31/00 G06F 11/22 360

Claims (1)

(57) [Claims] 1. A fault having a function of presenting a cause of a fault and a candidate for an investigation method based on information of a phenomenon input for performing a fault diagnosis, and having an operation interface, a system engine, and a database. In the diagnosis support system, the operation interface displays detailed information on the relationship between the phenomenon, the cause, and the investigation method in the combination of the phenomenon, the cause, and the investigation method specified by the pointer controlled by the operation processing unit. When displaying the combination of phenomena, causes, and investigation methods that are information for performing fault diagnosis using the interactive interface function, the relationship between phenomena, causes, and investigation methods in the combination of phenomena, causes, and investigation methods The operation processing unit has a function of three-dimensionally displaying detailed information of the object, and the operation processing unit searches for the phenomenon, cause, and investigation method. The system engine has a function of arranging and displaying combinations at positions where the association of each item is present on the three-dimensional graph, and the system engine searches for a cause and an investigation method related to the input phenomenon and is searched. It has a function to extract all combinations of phenomena, causes, and investigation methods related to information as information when performing fault diagnosis, and includes a search / inference engine and a knowledge translator.The database includes equipment information data and knowledge data. , Comprising detailed data, the equipment information data stores information such as equipment name, installation position, etc., input on the equipment diagnosis support screen, and the knowledge data is a phenomenon of a failure case that is made into knowledge by the knowledge translator, The related data that is the cause and the investigation method is stored. The detailed data is a description of the combination of the phenomenon, the cause, and the investigation method in the knowledge data. It has detailed data for storing the light and image data, and further includes the operation processing unit, phenomenon receiving unit, diagnostic information receiving unit, 3D graph coordinate creating unit, 3D information display unit, 3D graph pointer specifying unit, detailed information An inquiry unit, a detailed information display unit, and a detailed information pointer identification unit, wherein the phenomenon receiving unit is an operation interface with an operator for receiving a phenomenon of a fault that has occurred. The diagnostic information receiving unit has a function of outputting data to a diagnostic information receiving unit. The diagnostic information receiving unit receives a phenomenon received by the phenomenon receiving unit, and performs the search /
Queries a diagnostic information to the inference engine, summarizes the phenomenon and research methods and their associated candidate multiple causes, a function to receive diagnostic information string from the search-inference engine, the three-dimensional graph coordinate creation unit Has a function of creating a coordinate axis of a phenomenon, a cause, and an investigation method from the diagnostic information sequence received from the diagnostic information receiving unit, and the three-dimensional information display unit performs tertiary conversion of the diagnostic information sequence received from the diagnostic information receiving unit. It has a function of displaying in the original coordinate space, the pointer specifying unit on the three-dimensional graph specifies a position of the pointer designated by an operator, and the detailed information inquiry unit inquires a search / inference engine for detailed information. Receiving the description and the image data, which are the detailed information of the combination of the phenomenon, the cause, and the investigation method, from the search / inference engine, Has been instructed by the operator with the pointer, the detailed information about the items specified in the pointer specifying unit three-dimensional graph, immediately stereoscopic display,
The pointer specifying unit on the detailed information is for switching display of image data of a combination of a phenomenon, a cause, and an investigation method according to a point position pointed by a pointer by an operator . Origin related to the phenomenon
Search for causes and investigation methods, and related to the searched information
Failure of all combinations of phenomena, causes and investigation methods
Executing a step of extracting the information as information for performing a diagnosis, and the operation processing unit detects the phenomenon, cause, and investigation method
The combination of each item on the 3D graph exists
The step of arranging and displaying a position running, the current of the operation processing unit has been designated by the pointer
Phenomena and causes in combinations of elephants, causes and investigation methods
View detailed information about how a survey relates to a survey
Steps, phenomena, causes and information that are information for performing fault diagnosis
When you display a combination of fine survey methods, phenomenon, causes and
Phenomena, causes, investigation methods and combinations of investigation methods
Detailed diagnostic information on the relevance of the tertiary on the operation screen
A failure diagnosis support system, which executes a step of displaying a three-dimensional image as an original graph .