An equipment fault diagnosis method and system based on natural language processing and case-based reasoning
A natural language processing and fault diagnosis technology, applied in semantic tool creation, instruments, unstructured text data retrieval, etc., can solve problems such as poor inheritance of technical experience, equipment not working properly, and loss of production efficiency
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[0078] Example 1:
[0079] A device fault diagnosis method based on natural language processing and case-based reasoning, such as figure 1 As shown, including the following steps:
[0080] S100. Establish a fault diagnosis knowledge base based on the fault case database and equipment related information;
[0081] S200. Establish a fault diagnosis case library by summarizing and sorting the fault diagnosis knowledge base one by one;
[0082] S300. Extracting fault diagnosis keywords from the fault diagnosis case database, establishing a fault diagnosis word database based on the extracted fault diagnosis keywords, extracting feature tags from the fault diagnosis word database, and calculating a weight matrix of the feature tags;
[0083] S400: Obtain the similarity between the target failure case and the source failure case through the weight matrix, and then obtain the matching degree between the target failure case and the source failure case;
[0084] S500: Obtain a source failure cas...
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[0146] Example 2:
[0147] A device fault diagnosis system based on natural language processing and case-based reasoning, such as figure 2 As shown, it includes a fault diagnosis knowledge base establishment module 100, a fault diagnosis case library module 200, an extraction calculation weight matrix module 300, a matching degree calculation module 400, a similar case confirmation module 500, and a response maintenance module 600;
[0148] The fault diagnosis knowledge base establishment module 100 is used to establish a fault diagnosis knowledge base based on the fault case database and related information of the equipment;
[0149] The fault diagnosis case library module 200 is used to establish a fault diagnosis case library by summarizing and sorting the fault diagnosis knowledge base one by one;
[0150] The extracting and calculating weight matrix module 300 is used to extract fault diagnosis keywords from the fault diagnosis case database, build a fault diagnosis vocabulary ba...
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