Data integration method and system for intelligent decision making of automobile assembly process

The invention discloses an automobile assembly process intelligent decision-making-oriented data integration method and system, and the method comprises the steps: carrying out the carding of product design information, such as part geometric information, part attribute information, product manufacturing information and product assembly information, needed by the automobile assembly process decision-making, and constructing an assembly process data semantic model through an ontology; the method comprises the following steps: designing a data interface for heterogeneous data such as STEP, CATIA, Excel and the like to extract semantic information contained in various types of data; and based on the assembly process data semantic model, performing rule processing on semantic information extracted from various types of data to realize semantic information cleaning and fusion of all data and form an assembly process information atlas. According to the method, massive multi-source heterogeneous data involved in the