Research On The Fast Response Method Of Failure Disposal Of Urban Rail Transit Signal System

Urban rail transit is the backbone of urban public transportation.It is widely favored by people for its punctuality,convenience,safety and comfort.At the same time,due to the rapid development of emerging technologies such as microelectronics,communications,and computers,urban rail transit has gradually achieved automation,specialization and intelligence.In this context,the development of my country’s urban rail transit is no longer limited to the construction of road networks,expansion of scale,etc.How to achieve rapid response to fault handling is a new task and challenge facing the development of urban rail transit at this stage.This article takes the urban rail transit signal system as the research object,and conducts indepth discussion around the rapid response method of fault handling.The main contents are as follows:(1)The structure of the urban rail transit signal system and the functions of each subsystem are described.The causes of signal system failures are analyzed in depth from three aspects:human factors,equipment factors and environmental factors.The level of signal system failure is defined and explained.It has laid a theoretical foundation for the follow-up study of fault disposal.(2)Taking urban rail transit signal system failures as the research object,in-depth research has been carried out on the rapid response methods of fault diagnosis.By analyzing the working principles and characteristics of case-based reasoning and decision tree algorithm,a fault diagnosis model based on decision tree + case-based reasoning is established.Based on the decision tree algorithm to determine the fault type,case-based reasoning is used to retrieve all cases of the same type.,Match to the most similar fault case,provide auxiliary decision-making for the fault handling plan,improve the diagnosis speed and stability of case-based reasoning,and further ensure the reliability of the diagnosis method.(3)In-depth discussion of the rapid response method of fault handling.First,select the priority evaluation index,and use the SVM algorithm to sort the priority of fault handling in the multi-fault scenario;secondly,select the maintenance resource evaluation system to establish a maintenance resource selection model based on the analytic hierarchy process Make decisions on maintenance personnel and maintenance spare parts;finally,in order to solve the time-consuming problem of maintenance resource transportation,considering the two factors of transit time and signal delay time,an emergency rescue route planning method based on Floyd algorithm is proposed.Simplify the fault handling process,improve the efficiency of fault handling,and provide technical support for the fault intelligent handling platform.(4)Through demand analysis,the overall design plan of the intelligent handling platform for urban rail transit signal system faults is proposed,including the overall architecture,main functions and development environment.The structure and content of the database are introduced in detail.Developed modules such as user login,query display,status monitoring,fault handling,data management,learning and training,and built an information management and intelligent handling platform for signal system failures,ensuring the timeliness of information and realizing failures The rapid response to disposal provides practical verification for the feasibility of intelligent operation and maintenance.The research results of the thesis provide technical support for the rapid response of signal system fault handling,and at the same time provide a reference for the urban rail transit industry to further promote the research of intelligent operation and maintenance.