Event Representation and Research on Formalizing Representation Model Based on Ontology

Based on the knowledge graph to describe the process knowledge, there are deficiencies. Based on the theoretical basis of the knowledge graph and the affair map, the author proposes a new ontology for the industrial Internet of Things field—the Internet of Things perception and control ontology to solve the large number of temporal and spatial characteristics and states in domain knowledge. Semantic modeling of the X-ray single crystal diffractometer using t the Internet of Things (IoT)perception and control ontology(IoT-PCO) to describe its automatic operation mechanism. The research results show that the ontology can effectively solve the problem of semantic representation of perception and control data, and provide support for complex semantic flow processing driven by affair knowledge.