JPH0484333A - System for managing knowledge base of maintenance work supporting system - Google Patents

Abstract

PURPOSE:To reduce the overhead time required for updating a knowledge base by updating the data regarding the component of the knowledge base stored in an external storage device the content of a maintenance work procedure. CONSTITUTION:A knowledge base managing device 4 is added to a maintenance work supporting system constituted of an external storage device 3, inference device 2, and input-output device 1 and, by means of the device 4, data related to equipment names, equipment numbers, contents of a status changing requests to equipment in the maintenance work procedure prepared by the device 2 are extracted and the data are updated after the knowledge base of the device 3 is retrieved for the data item only. Therefore, the overhead time required for updating data can be reduced, because the knowledge base of the external storage device 3 is only updated on the data to be updated.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a knowledge base management method used in an inference system, and is particularly suitable for managing a knowledge base of a maintenance work support system in a large-scale plant. Regarding.

[Conventional technology]

A conventional example of a maintenance work support system using a knowledge base regarding the configuration of a plant system is disclosed in Japanese Patent Application Laid-Open No. 1-207.
Publication No. 633 “Plant isolation support method”
There is. This example describes a method for instructing maintenance personnel on the operating procedure for separating a component of a plant system from the system. A knowledge base about the plant system is essential for determining this operating procedure. For example, a knowledge base about equipment functions for system separation, a knowledge base about process quantity communication, and a knowledge base about equipment connections and status are prepared in advance. has been done.

[Problem to be solved by the invention]

The above conventional technology does not consider the management method when the knowledge base becomes large-scale, and in particular, considers how to handle the external storage device when using the knowledge base whose storage capacity exceeds the storage capacity of the main storage device of the maintenance work support system. In other words, the isolation method is inferred based on the knowledge base regarding the plant system configuration stored in the main memory of the maintenance work support system, and the equipment state of the component is changed to remove the component from the system. This shows the separation procedure. However, as the scale of the plant increases, an external storage device becomes necessary, and in the case where the device status of a component differs from its initial state and is stored again in the knowledge base1.For example, when the system of equipment has been separated due to maintenance work, If the knowledge base in the external storage device is rewritten on a system-by-system basis, a large amount of data will need to be rewritten, resulting in a problem of longer overhead time.

An object of the present invention is to provide a knowledge base management method for a maintenance work support system that reduces overhead time when updating a knowledge base in an external storage device.

[Means to solve the problem]

In order to achieve the above object, in the present invention, when updating the knowledge base of an external storage device, the knowledge base is not rewritten for each plant system related to maintenance work, but the maintenance work procedure that is the output of the maintenance work support system is , that is, the name of the component in the plant system and the content of the request to change the state of the component, selects a data item to be rewritten, and updates the knowledge base in the external storage device only for that data item.

[Effect]

In the present invention, in a maintenance work support system consisting of an external storage device, an inference device, and an input/output device, a knowledge base management device is further added, and this knowledge base management device allows the maintenance work procedure created by the inference device to be Data related to the device name and status change request contents for device No. 9 is extracted, and after searching the knowledge base of the external storage device only for the data items, the data is updated. By doing this, in the knowledge base of the external storage device, only the data to be updated is updated, and the overhead time for updating the data can be reduced.

〔Example〕

Hereinafter, a specific embodiment of the present invention will be described in detail using the drawings.

FIG. 1 shows an embodiment of the knowledge base management method of the maintenance work support system of the present invention. The device in Figure 1 is an input/output device!
1. Reasoning device [2, external storage device M3゜Knowledge base management device [
It consists of 14. The input/output device 1 receives input data 5, such as the name of the system on which maintenance work is to be performed and the contents of the work. The input/output device 1 outputs the inference device 2 using the input/output control signal 8.
Send input data to. Based on this input data, the inference device 2 acquires knowledge regarding the configuration of the plant system necessary for inference.
! 7 is read out from the external storage device 3 as a knowledge base signal 9, interference determination and work procedure creation regarding maintenance work are performed, and the result is outputted from the input/output device 11 as output data 6. Based on the work procedure signal 10, the knowledge base management device 4 extracts the device name included in the work procedure and the content of the state change request for the device with device number 9. Furthermore, when the maintenance work is completed and the knowledge base is updated, a confirmation request signal as to whether or not the extracted data contents can be updated is sent to the input/output device as the knowledge base management signal 11. Send to 1. If the maintenance work content matches the data update content, the maintenance worker sends an update permission signal to the knowledge base management device 4 via the knowledge base management signal 11 as well. When the knowledge base management device W4 receives this update permission signal, it sends a knowledge base update item request signal 12.
External memory device! ! Send to 3. In the external storage device W3, the knowledge base 7 is searched for data items to be updated, and the knowledge base is updated.

FIG. 2 shows the processing of the knowledge base management method in the knowledge base management device 4 shown in FIG. Third
Taking the maintenance work shown in the figure as an example, the processing contents are shown below. In the first step 13, first, maintenance work procedure 25
Read the data of the first work procedure r(1) FOO3 open. In the second step 14, the device name and device number data, that is, FOO3, is extracted from the read work procedure.
, and also extracts "open", which is data related to the state change request. In the third step 15, it is determined whether the read data regarding the device name, etc. is new. If not, in the fourth step 16, the device status list for the previously registered device is updated. If it is a new device name, etc., go to the fifth step 17 without going through the fourth step 16.
Create a list of knowledge base items to update.

In other words, there are 8 lists of "rCRD system, FOO3, open". In the sixth step 18, it is determined whether the data to be read in the maintenance work procedure 25 has been completed. If the process has not been completed, the process returns to the first step 13 and the same process is repeated. Finally, a list is created in which the device name instructed in the maintenance work procedure 25 is associated with the device number and its status change request. In the seventh step 19, when the knowledge base is updated upon completion of the maintenance work or from time to time, the contents are confirmed to the maintenance personnel using the input/output device w1. When the update is permitted, in an eighth step 20, the knowledge base 7 in the external storage device 3 is searched for the corresponding update data item. And in the ninth step 21, knowledge base 7
Update the contents of.

FIG. 3 shows that the knowledge base contents 23 of the plant system 22 before updating are stored in the knowledge base management system based on the maintenance work procedure 25!
4 shows the relationship that becomes the updated knowledge base content 24.

According to the knowledge base management method of the maintenance work support system described above, data can be updated only for related data items in the knowledge base of the external storage device, so that the overhead time for data update can be reduced. Further, in the present invention, the external storage device has been described as a storage location for the knowledge base, but it is clear that the storage location for the knowledge base may be an internal storage device. Furthermore, it is also possible that the initial data referred to by the inference device is an updated knowledge base in an external storage device.

〔Effect of the invention〕

According to the present invention, since the knowledge base in the external storage device can be updated efficiently, the overhead time for updating the knowledge base can be shortened, and therefore the operating rate of the maintenance work support system can be improved.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment to which the knowledge base management method of the maintenance work support system of the present invention is applied, and FIG.
FIG. 3, a flowchart showing the processing contents of the present invention, is an explanatory diagram showing the relationship between the knowledge base management method and the knowledge base according to the present invention. 1... Input/output device, 2... Reasoning device, 3... External storage device 1-2/ Figure Figure

Claims (1)

[Claims] 1. In a maintenance work support system comprising an external storage device, an inference device, and an input/output device, maintenance work conditions input from the input/output device and a plant system targeted for maintenance work are provided. Based on the content of the maintenance work procedure inferred by the inference system from the knowledge base content that describes the configuration of A knowledge base management method for a maintenance work support system, characterized in that data regarding the constituent elements of the knowledge base in the external storage device is updated with respect to the contents of a change request. 2. A knowledge base management method for a maintenance work support system according to claim 1, in which an internal storage device is used instead of an external storage device. 3. The knowledge base management method for the maintenance work support system according to claim 1, wherein the initial data referred to by the inference system of the maintenance work support system is an updated knowledge base in the external storage device.