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Key Technologies on 120-Wagon Air Brake Training System

Author: LiuYing
Tutor: GongZhuoRong
School: Beijing Jiaotong University
Course: Safety Technology and Engineering
Keywords: Air brake valve Triangular mesh simplification Particle system Collision detection Maya
CLC: U270.35
Type: Master's thesis
Year: 2010
Downloads: 56
Quote: 0
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Abstract


120 type truck air brake valve of the main body of the truck brake, occupies a dominant position in China's railway brake, and therefore require higher technical level of the 120-type brake valve maintenance personnel. 120-type brake valve internal structure of the cavity-intensive, complex air brake principle, the current means than the single-site staff training, lack of teachers, the training effect is not ideal, it is not conducive to the needs of the development of high-speed rail. In view of this situation, the development of a training system for railway system 120 type air brake valve structure and working principle of engineering significance. This topic is in this context of research and development of the 120 type truck air brake simulation training system. In this paper, three-dimensional animated simulation technology, the basis for the development of questions needs inadequate for the current the railway site training exist, the first time the three-dimensional simulation training system developed a teaching system for railway wagon brake valve principle, the system includes brake valve principle, and the role of the various components of Principle, three-dimensional presentation interactively display, topics include modeling, gas manifestations, system implementation, and other sectors, and strive to realistic performance brake valve principle to-understand, image, easy to operate for the development of principle, the maximum so that students master the principle, to achieve the purpose of teaching. Triangular mesh simplification algorithm implementation, improve system speed of rendering. Between progressive mesh simplification algorithm analysis, the collapse simplification algorithm based on half of a progressive mesh simplification algorithm, to simplify the brake valve grid model, to solve the complexity of the model and the storage, transmission, processing, especially real-time rendering contradiction. The research and development of air brake valve gas particle system performance based geometric modeling methods - the basic principle of the particle system and workflow, graphics, texture mapping, bulletin boards and dynamically generated viewpoint alternative special effects technology, combined with Maya effects to achieve gas draw authenticity and real-time compatible. The system uses three-dimensional animation keyframe various parts of the brake valve motion simulation, using two-dimensional, three-dimensional real-time demonstration system switching to improve training efficiency; explore the contradictions and problems of the real-time particle systems and authenticity, while taking advantage of the material properties of System realistic effect; collision detection and masking technology, effective binding of the movement of the gas particles and solved particles spillover phenomenon. The system can be used as a teaching training tool of railway wagons, brake valve can improve the the Railway the brightest Bureau overhaul staff training effect, make a positive contribution to the enterprises to reduce training costs. The subject, the first to achieve a pure 3D simulation of railway wagons with 120 valve principle simulation training to fill the blank of China's air brake system difficult to use three-dimensional form of the system has been officially delivered Meishan Rolling Stock Works for factory Railway Administration training of maintenance personnel.

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CLC: > Transportation > Rail transport > Vehicle Engineering > General issues > Body construction and equipment > Brake
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