Design And Implement Of3D Simulation System For High Speed Train

With the high-speed railway in China’s rapid emergence of a large number of software applications for high-speed rail.Intuitive performance train running, developed a the corresponding operating environment of the three-dimensional analog of hardware and human-computer interaction interface, studies of environmental factors, real-time settings simulation scene (rain, snow, slope, curve, light, terrain, etc.) that,computing environment of the train running into the the train simulation equipment factor, and thus more realistic simulation of real trains running condition. The impact of the train running process, reflecting the high-speed train running simulation effect, the use of three-dimensional computer graphics automatic generation of technology, research, and the view of the train line and the surrounding environment automatically generated algorithms and software; development of three-dimensional scenes display function to achieve a different car. different line conditions, different weather conditions, such as simulation, to provide users with rich scene; provides an intuitive basis for the system performance assessment. Therefore, relying on high-speed rail simulation run system, run on high-speed trains3D simulation system, the main contents include:detailed analysis of3D high-speed train running simulation system needs;3D high-speed train the run simulation system function feasibility analysis module division;3D high-speed train running simulation system design implementation and optimization, and system testing.First, a detailed investigation and analysis of high-speed train the3D running simulation system demand, the completion of a Feasibility Analysis and Implementation of3D high-speed train running simulation system features a series of work. On this basis, the establishment of a3D high-speed train running simulation system functional requirements of each module and the overall design and implementation and optimization. Then, the system mainly involves the module design technology and algorithms were studied in detail. Line document processing read line file process applied to the ADO technology, use the the ADO function interface connection to the Access database and access.. The LOD algorithm in different terrain loading portion, the main use of terrain dynamic loading function according to the position of the train operation, the use of the algorithm the terrain load with high efficiency, while the loading effect does not change. And load the file from the model library, using the the Direct3D interface functions that have been loaded into memory model optimization of three ways:optimize grid model, the level of detail optimization and enhanced mesh optimization, improved model rendering speed, to optimize the visual effect of the model. Achieved good results. Scene module, we added the particle system in order to achieve the rainy weather environment, transparent and translucent handle the particle system. Displayed, the appearance of rain particles falling speed, particle density can be close to the real scene.More over, on the basis of the above algorithm, designed and implemented and optimized for high-speed trains to run three-dimensional simulation system, describes the important details of the system, and the prospect of further work.