The Design And Development Of The Nanjing Metro Telephone Block Auxiliary System

At present,most of the domestic metro corporations adopt ATC system as the basic block system for automatic metro operation control,but when the basic block equipment malfunctions,for maintaining the normal operation,they have no alternative but to adopt the degraded operation mode--telephone block system.In view of the many defects existing within the traditional telephone block process.Thus,this paper aims to make up the existing defects by designing a metro operation aid system based on telephone block system.In this paper,after analyzing the practical functional requirements of telephone block system adopted by Nanjing Metro,we conduct the functional module design of the aid system,study its realization,test it and study its application.First,we discuss the notion and working conditions of telephone block system and take its operational process and users,habits into account to analyze its users and business requirements which can be concluded into four aspects including graphical display,overall management of control center,metro operation management of the station-level users and system functions like log query and error handling.Second,we synthetically consider the design goals and principles of the metro operation aid system based on telephone block system and review the business processes of every functional module for building the following modules with a structured analysis approach applied,including user management,graphical display function,error handling,traffic management and log management five major functions module,and then refine the five function module design.Third,we synthetically analyze the realization process of system structure together with the system architecture model comparison,and then complete the system hardware and software architecture design.Based on the analysis of system development and operation environment,we complete server function module and interface design and function realization of client module.Finally,on the basis of building up the system test environment,we finish the system test and analyze its practical applications.