Design And Implement Of Timetable Editing System And Online Adjustment System Of Mass Transit System

With the rapid development of the urban railway systems in China, people become more inclined to choose metro as tools of transporting. So it is very significant to arrangement train operation plan efficiently and to keep the subway system fast, secure and punctual in the study of train supervision. There are two main parts in this paper, one is mainly talking about how to design an editor of timetable, and the other part is about adjusting the train graph online.First part of this paper discusses the design of subsystem in timetable editing. This part introduces the concept, constitution and formation of timetable briefly, and analyzes principles and functions of timetable editing system in details. Then this part builds system model according to the functional requirements and proceeds module design minutely. Subsystem of timetable editing offline consists of three layers of structure system and eight modules. User layer mainly completes the interface function of system and clients, and module of man-machine interface achieves these goals. Processing layer takes charge of the core functions of the editing system and receiving custom instructions and processing instructions, including initialization, data editing, generation of basic plans, display of train graphs, conflict detection, operation adjustment and data output. Oracle database provides data, supervises and stores the bottom data in data layer. Last, this part introduces the operation of editor and generation of timetable according to creating process of timetable, and then simulates the model.The second part of this paper studies the design of train graph adjustment online, and this part introduces a brief summary of train graph, target of train adjustment and strategies. And it analyses the principles and functions of the system in details, then builds a system model according to its functional requirements and designs a particular function module. The subsystem of adjusting online consists of man-machine interface, initialization, drawing of train graph, data communication, operation adjustment, data output and management. The subsystem consists of two kinds of adjustment:manual model and automatic model. It can be regulated artificially in manual mode, and both artificially and automatically regulated in automatic model. This part studies algorithm of automatic adjustment briefly, and builds related math model and simulates it in the end.