The invention relates to the technical field of
industrial Internet of Things, in particular to a
predictive maintenance method for intelligent factory
Internet of Things equipment, which comprises the following steps of: acquiring equipment operation parameters, environment
monitoring data and historical maintenance records, constructing a multi-dimensional
feature data set, extracting equipment degradation features by adopting a
topological graph attention mechanism and a
Bayesian network, and establishing a multi-dimensional
feature data set; the method realizes equipment health state modeling and
fault probability prediction, combines a dynamic
adjacency matrix and a multi-objective optimization
algorithm, comprehensively optimizes maintenance cost, equipment fault risk and associated equipment influence, dynamically generates an
optimal maintenance plan, carries out constraint optimization based on a mixed
integer programming method, automatically generates a maintenance
instruction sequence, and achieves the
optimal maintenance of the equipment. Tasks are issued through the
computerized maintenance management system, the PLC
control system and the
industrial Internet of Things gateway, and the execution state is monitored and maintained in real time. The intelligent level of equipment maintenance is effectively improved, non-planned shutdown is reduced, and the equipment reliability and the production efficiency are improved.