Study On Application Of VBA In Train Control Operation System Active Balise Telegram Processing

Balise equipment is dot mode ground-vehicle information transmission equipment,applicable for CTCS1-4 train control operation control system on each level.In C2 train control system,mobile units can only receive line data information via balise.All message data is stored in the train control center,which,based on external input conditions,transfers different messages to active balise at real time to satisfy requirements for safe operation of the train.In recent years,high speed rail project construction has accelerated,making active balises become widely needed.Meanwhile,limited by construction time period and other conditions,the time limit requirement for message compilation is almost harsh.Automatic tools with simple configuration and short time consumption for message generation are in urgent needs.This paper analyzes advantages of VBA macro language technique with precious consideration on relevant technical specifications and finally develops automatic generation tool for train control active balise message data as required.The tool is configured mainly based on information of each station,including information of annunciator,balise and station track number.After reading relevant information of the station and at the premise of correct original data input,the tool can generate message data for all active balises of the station automatically,reaching the goal of saving manpower and time cost.For positions not able to be disposed by the program automatically,for example the overlength of data bits,it will generate recording documents in form of logs for reference by manual disposal.This paper firstly introduces subject background and introduction,advantages of VBA technique in data processing and so on;then,it adopts the popular VBA technique for preparation of data generation tool to research and analyze the principals for train control system data processing;finally,this paper describes preliminary design,detailed design and test cases in details,as well as introduces the implementation process and results of the software.The software has acquired desired results in actual construction of projects and has important reference value for application in passenger and specific line projects.