Ultrasonic gas meter node fault diagnosis method based on knowledge graph

An ultrasonic gas meter node fault diagnosis method based on a knowledge graph comprises the steps that (1) ultrasonic gas meter information is collected from multiple information sources, an ultrasonic gas meter and metering parameter triple is extracted, and a data support layer is constructed; (2) performing knowledge fusion on the triple in the data support layer obtained in the step (1) by using a Falcon-AO system to obtain a redundancy-removed ultrasonic gas meter atlas; (3) performing knowledge reasoning on the atlas of the ultrasonic gas meter obtained in the step (2) by using a path ranking algorithm (PRA), and complementing entity nodes lacking in the atlas obtained in the step (2); and (4) utilizing the gas meter knowledge graph constructed in the step (3), extracting gas meter node characteristics by using a depth walk algorithm, and performing ultrasonic gas meter node fault diagnosis. According to the method, the knowledge graph of the ultrasonic gas meter node metering parameters is constructed