The invention provides a
cement equipment maintenance decision-making method and device based on a
knowledge graph and
large model reasoning, relates to the field of
cement industry intelligent operation and maintenance, and solves the technical problem of decision-making
response delay caused by knowledge fragmentation. The method comprises the following steps: extracting real-time characteristics from vibration spectrum signals, temperature curves and torque waveform data collected by an edge gateway, and extracting a work order entity triple from a
natural language work order text of an EAM
system; based on an equipment BOM
list, a historical maintenance
record and an FMEA analysis table, physical
assembly constraint conditions are defined through ontology modeling to generate a
cement equipment topological relation and a fault rule chain, and a
knowledge graph is created to output a fault rule base with confidence coefficient weights. And inputting the real-time
feature vector and the work order entity triple into a multi-
modal collaborative
inference engine, triggering a matched fault rule chain by combining real-time features and semantic features, outputting a fault
root cause and an associated
maintenance strategy ID, and labeling a logic chain. And activating the associated
maintenance strategy ID and obtaining the real-time characteristic deviation degree of the
maintenance strategy ID, quantifying the decision credibility through a tracing
rule matching path, obtaining an
executable maintenance instruction packet with a logic chain, executing the maintenance instruction packet and dynamically updating the
knowledge graph based on a maintenance result. The method is used in the maintenance decision-making process of the cement equipment.