Design And Prototype Implementation Of Urban Rail Operation Safety Guarantee System Based On Risk Chain

With the rapid development of urban rail transit,the operating mileage of urban rail transit has increased rapidly year by year.Rail transit has shown the characteristics of network operation,high density,complex technology,strong coupling,and large environmental impact,its security status is affected by more and more factors.The current security assurance system adopts a point-oriented monitoring model.According to this model,the security assurance system can no longer meet the current urban rail security assurance requirements.The development of the evaluation model from the point level to the overall system level is the general trend.How to establish an urban rail transit the overall safe operation of the safety assurance system and the improvement of the urban rail safety assurance technology have become an urgent problem to be solved.Based on the characteristics of urban rail operation safety accidents and based on the characteristics of failure risk chain communication,this paper proposes to apply the risk chain theory to the operation safety assurance system,and construct risks by constructing point sets,identifying risk points,and applying risk chain construction methods to build chain model;obtain unsafe risk points through monitoring data and input into the model to complete the risk assessment and control of unsafe risk points;use the characteristics of the risk chain model to reverse speculation to complete the cause of operational events Speculate.On this basis,the business function analysis of the urban rail operation safety assurance system was carried out,and finally the design of the application part of the urban rail operation safety assurance system and the implementation of the prototype system were completed.The main results of this article are as follows:(1)Participate in the investigation and research,analyze and analyze the risk management control level and fault record data of the subway company,complete the mining of system functions and complete the analysis of system requirements in conjunction with the company's business process analysis.(2)Complete the overall architecture design of the system,adopt the microservice architecture to design the backend of the system,divide the backend into users,models,risk points,and risk microservices according to functional characteristics,and complete the data structure,interface,and security in turn And other designs.(3)Detailed design of the main functions of each microservice in the prototype system,design of the project structure and implementation class,completion of the implementation of the model algorithm,completion of the simple interface design of the prototype system,code writing,database and model building,and The prototype system was functionally tested to achieve the expected functional effect.The system design and prototype implementation will make up for the current lack of research on the urban rail system-level operational security assurance system,and play a more important role in the development of the system-level active security assurance model.