The Application Of Visualization Simulation In Subway Plantform Adaptability

With the rapid development of urban rail transport, subway or metro has become an important symbol of comprehensive national strength of countries, economic strength of cities, people's living standards and modernization. Cities have been expanding, along with the sharp increase in urban population, the transportation pressure of subway is increasing, even become unbearable. In this paper, aim at the problem of passenger crowded in subway platform, it use three-dimensional visual simulation technology to simulate the running interval between different platform, and the situation of passengers get on or off after train stop in different passenger flux, analyze influence of different platform structure and passenger flux to the time get on or off board.Research work goes mainly on several following aspects:1. After survey and analysis of passenger flux and the time passenger spend when they go on or off board, we can estimated average speed when passengers go on or off board between different platform to offer warranty for the dispatching personnel to arrange reasonable plan in condition of passenger flux demanded scope between different period of time, different types of platforms and passenger flux density in the platform waiting area and in the train.2. After studying computer animation technique and the application in visual simulation, including different classes of computer animation and applications instance of the key frame animation technology, etc. Achieve passengers behavier change in get on or off through the technology of key frame. Calculate speed, direction, and location real-time use positive motion method. Achieve process dynamic in people motion.3. Studying the path planning and collision detection technology of virtual people. On the basis of the dynamic characteristic of human in platform scenes, we put forward an optimization path planning algorithm based on the assumption-testing; According to the environmental characteristics and the dynamic testing of the crowd, we design a corresponding collision avoidance algorithms suitable for platform environment and human barrier between the static and dynamic. 4. Developing a simulation platform which can simulate the crowd state of getting on and off, in condition of different running intervals, different passenger flux, and interact with the scenes. The platform can help subway operator units estimate the influence of passenger get on or off in platform to stop time in condition of ensuring operational safety and punctuality arrival.