Knowledge Graph Construction of Equipment Management for Space Environment Simulation and Research Infrastructure

The Space Environment Simulation and Research Infrastructure (SESRI) has a large number of devices and complex correlations. At the same time, the data files are diverse and not intuitive. In order to realize the life cycle management and service support of the devices in SESRI, this paper takes the Numerical Simulation and Central Monitoring System (NSCMS) in SESRI as an example to construct a knowledge map of equipment management. First, the equipment management requirements of SESRI were analyzed, and the hierarchical structure of the digital imitation central control system was determined; second, the equipment management ontology of the digital imitation central control system was designed based on the requirements using protégé; after that, the corresponding knowledge extraction scheme was proposed for various data sources, and the required triples were obtained to complete the data driving of the schema layer of the ontology and construct the knowledge graph; finally, the storage, updating and visualization of the constructed knowledge graph were realized using the graph database Neo4j.