The Research And Implementation Of Stage Planning System In Marshalling Yard

Following the developing technology in modern railway information, under the background of large railway transport marshalling yards production process, the platform of operation simulation in marshalling yard simulates the main process of Computer Integrated Process System (CIPS) in the northern marshalling station in Chengdu, which has effectively solved the problem of college training in railway transportation professional technology applied talents. The stage planning system we talk about in this paper is an important subsystem which plays the role of monitoring and control in the whole simulation platform. As a semi-automatic simulation training system integrated in modern management technology, information processing technology, system engineering and computer science, this system has realized the sharing of integration in data and information and the height of process simulation.In this paper, we have analyzed and designed the whole system framework, function structure and hardware requirements of stage planning system by using the idea of system engineering, computer simulation technology, database technology and object-oriented programming technique. Depending on the shared database, the whole system manages and controls the train respectively according to ascending and descending direction which including six function modules of graphics drawing, graphics management, database management, initial solutions generated in stage plan, adjustment and delivery of stage plan and so on. Together with other subsystem of the simulation platform, this stage planning system has achieved the purpose of simulation of training in railway marshalling yards. This paper has mainly researched on the following contents:1. We analyzed the content, basis, methods of stage plan and technology process in marshalling station, then designed the function structure of the whole stage planning system;2. According to the constraints of stage planning models, we got a relatively ideal initial feasible solution by using computer simulation method to simulate events like train arrival, disintegration, marshalling and departure in marshalling yard;3. On the basis of the requirements of the simulation platform needs to database in the information, processing capacity and safety integrity, we designed the system database structure by using the basic theory of database design. We established the database in Microsoft SQL Server2008database management system and realized the operation in database by using ADO technology;4. We built up graphics coordinate system, implemented the drawing of technical operation in marshalling yard and geometry transformation in addition based on principle of computer graphics;5. By using the object-oriented development language C++, we completed the design of system programming, which meets the demand of simulation platform in marshalling yard stage planning system, in development environment of Microsoft Visual C++6.0.