Research And Implementation Of The Balise Telegram Coding/Decoding

With the rapid development of China's high-speed railway, balise has been widely used in China train control system as a way of information transmission. Therefore the research of the balise telegram structure and coding/decoding is of great significance and value.In this thesis, it aims to establish of balise data telegram coding and decoding system,and make a detailed analysis of requirements and design of the whole system, analysis and design of FFFIS.System also provide the functions of user role management which help users to improve the work effectively.System is divided into six functional modules,they are user management module,data import management module, user information packet coding module,transmission of packet coding module,decoding module,data management module.The system base on.NET platform adopts structure of B/S. This structure improve the efficency of development and the stability of system and guarantee the system of updating.This thesis is divided into six chapters.The first chapter is introduction,it analysis situation of world wide about balise applications and research of coding&decoding,also analyses significance of research and the main content of this paper;The second chapter summarize of balise system,it gives lots of aspects about balise system,such as the working principle of balise, layout in CTCS-3,data telegram structure and determine the range of information package;The third chapter is based on FFFIS coding strategy analysis and design, analyses the FFFIS encoding process, and on this basis the design and implementation; The fourth chapter is analysis and design of the balise telegram coding, main analyzed the decoding process and priority analyzed the implementation algorithm of the decoding process complex step;The fifth chapter is the analysis of requirements and whole design of system,it discusses the main functions of system and resolving plan,and finishes the database design and implementation;The sixth chapter is detailed design of system,it gives the running system inferface,main functions design.Finally,Using WuGuang line field data and database technology to store data,a lot of emulations have been done to validate the validity of the system coding/decoding fuctions and achieved good results.