Research On Graphic Visualization Technology For Electromagnetic Compatibility In Vehicular Communication System

This article outspread research surrounding scientific visualization technology in the application of electromagnetic compatibility analysis, using VC++ language and OpenGL technology have developed pre-processing and post-processing module of a simulation and analysis software about a communications vehicle system simulation of electromagnetic compatibility.In the pre-processing, aiming at mesh optimization have put forward triangulation of two-dimensional polygon analysis method based on the three-point advancing front method with constrained conditions , have realized topological relations between the vertex and the vertex of the element, met the need for the post-processing image displaying smooth and overcomed pathological problem such as the cracks,superposition and element too narrow, increased the validity of the mesh and provide a good guarantee for the core calculated, and introduced restrict coefficient of element length to realize element size dynamic controllable .Secondly, have put forward analysis method. to complete the junction point of antenna and the vehicular surface located in the center of hexagonal modules to meet the calculation requirements of the RWG vector basis function.In the post-processing, the research is mainly aimed at visual display of electromagnetic field data, including the current in the surface of vehicular, space-field intensity in the near electric field and emulation orientation figuer of the system. In the visual display of the current and field strength, using OpenGL technology to establish a new mechanism for vertex repainting, and amend the original calculation to get eight consecutive changes of the data in a period, so we could obtain optimization effect of color transition uniformly and animation display fluidly. In the display of the emulation orientation figuer , we made research on protract method of planform of vehicular. Programmed to achieve the surface blanking and surface merger, and thus get a complete vehicular planform . In addition, to facilitate the observation, we have realized the transmitting antenna dynamic flashing which reflecting the humanization of human-computer interaction design.