The Research And Implementation Of Graphical Modeling And Data Display System In Simulation Platform

With the continuous development of science and technology, the technologies integrated with computer visualization and systems modeling are widely used in scientific and research fields. Computer visualization transforms engineering data into screen graphics, enables operators to describe system model more intuitive.efficien and visualized. In simulation systems, the model is the basis for simulation, which describes the characteristics of the world objects such as the natural environment, the interaction among the objects, etc. The object of constructing the model is to conduct simulation computation, that is, through a succession of purposeful and conditional computer simulation test, characteristics of the model can be verifies, quantitative indicators which is relevant to these models can also be obtained. Meanwhile, in order to display the physical parameters and output of simulation tasks during the simulation process, it is very important to increase the visualization of simulation results, which offer decision makers with quantitative analysis and also provide the graphical display of simulation results. Currently, relatively mature real-time data display software adopts C/S architecture. However, in distributed simulation platform, Computing nodes transmit the simulation results to the data display software directly, which resulted in the overload of the distributed environment when the computing nodes are excessive, and further affect the efficiency of simulation. Additionally, lack of good configuration is also one of the shortcomings of these traditional data display softwares.In this thesis, which is based on the study of the problems in the traditional modeling and data display software and the high-speed trains digital simulation platform, graphical modeling and data display subsystem in the the simulation platform are designed and implemented through object-oriented mode, which mainly including a graphical modeling software and data display software. Graphical modeling software utilize modular modeling method to implement module library management, module description, the description of module relations, system modeling, etc., applicable to various simulation modeling. Use rectangular module to describe the simulation task modules, adopt line to describe the input-output relationship between the task modules, and then reuse these modules after their modeling, edit and storage in database. Data display software is based on Oracle database, which achieve these functions such as the parametric curves and status inquiries of the simulation task, the download and display of condition model diagram, the flexible configuration of condition parameters.curve is displayed in multi-channel and condition simulation process monitoring, etc., and it meets the needs of distributed simulation environment for data monitoring and visualization.In this thesis, the research background and significance, research status and research work both in domestic and international are firstly introduced. Then, the requirement analysis, the detailed objectives and functional requirements of the system design are described. Based on above mentioned works, graphical modeling software and data display software are designed and detailed described. Finally, the functional testing of the entire system is conducted, the entire work of the thesis is summarized and analyzed, and the shortcomings existed in the thesis and the research work for the next step are also pointed out.