Data-driven Life Assessment of Mechanical and Electrical Equipment in Urban Rail Transit Stations under Service Conditions

The station electromechanical system is a key system to ensure the safety, efficiency, and service quality of urban rail transit operation. Establishing a precise equipment life assessment system during service is the foundation of intelligent operation and maintenance of urban rail transit. This article proposes a service life evaluation index system for station electromechanical equipment, identifies the optimal service life evolution model using goodness of fit distribution test, determines the fault distribution function using maximum likelihood estimation method, calculates the quantitative indicators for service life evaluation of station electromechanical equipment, and finally verifies it with the platform door of a certain Shanghai rail transit line. The results indicate that this method accurately reflects the changes in the service life of equipment, and the evaluation results are in line with the actual situation of operation and management. It can provide reference for the service life assessment of mechanical and electrical equipment in urban rail transit stations.