Research On Fault Diagnosis Expert System Of Signal Equipment

The rapid development of high-speed railway in China has made remarkable achievements in the world.Signal system is an important equipment to ensure traffic safety and improve transportation efficiency.In recent years,with the continuous use of a large number of new equipment and technologies,the pressure and requirements for the maintenance and emergency disposal of railway signal equipment are also getting higher and higher.The traditional signal monitoring technology and equipment maintenance methods cannot meet the growing transport capacity and the requirements for the transport safety indicators of the signaling system.It is particularly important to determine the fault location and eliminate it in a timely manner,and compress the impact time of the fault.On the basis of combing and analyzing the current development status of railway signal centralized monitoring equipment and fault diagnosis technology at home and abroad,as well as the working principle of the existing signal centralized monitoring system,this paper proposes the importance and necessity of establishing an expert system for fault diagnosis of signal equipment based on the current situation and deeply integrating its functional modules into the signal centralized monitoring system,This paper analyzes the shortcomings of current centralized signal monitoring in realizing intelligent fault diagnosis,puts forward the design method of adding signal equipment status acquisition points for fault diagnosis,and studies the structure and technical scheme of signal equipment fault diagnosis expert system based on comprehensive acquisition;The expert knowledge base and fault diagnosis inference engine required by the signal equipment fault diagnosis expert system are designed by screening,extracting,summarizing the on-site fault disposal experience.The intelligent fault diagnosis method based on fault tree theory is proposed in the aspect of fault reasoning diagnosis.The fault diagnosis intelligent module is designed to realize the monitoring,diagnosis,analysis,early warning and alarm prompt functions of station signal equipment abnormalities and fault events,A set of intelligent and scientific data detection and monitoring,fault early warning and fault diagnosis system with less manual participation has been basically formed.At last,this paper looks forward to the prospect of signal equipment fault diagnosis expert system based on the current technology development to achieve the convergence and integration of multi-source data sets and establish a data sharing and multi-source data classification analysis.