电磁场与电磁波实验仿真系统

An Experimental Simulation System in Electromagnetic Fields and Waves

电磁场与电磁波实验仿真系统是利用计算机仿真技术,对电磁场实验中DH926A型电磁波综合测试仪进行仿真,该系统的虚拟仪器可以代替实际仪器进行相关实验,实现仪器外观相像、实验操作相像和实验结果相像等教学实践要求.该仿真系统由三维显示模块、用户界面模块、数据处理模块和控制模块组成.详细介绍了仿真系统的关键技术,选用专业的零件设计软件SolidWorks进行三维实体建模,使用OSG(OpenSceneGraph)和C++技术进行编程实现实验功能,还创新性提出了仿真系统在效果上保留人为误差的思想.该系统在技术上通过使各模块保持独立,提高了系统的可扩展性,不仅为开发新的实验内容提供方便,也为类似项目开发提供参考.

An experimental simulation system in electromagnetic fields and waves was a simulation which aimed at replacing the real laboratory apparatuses by the simulated ones in experiments. This was done by modeling and simulating the main apparatus named DH926A-electromagnetic field tester. The simulation system was made for the purpose of teaching practice and set the goals of mathematical similarity, geometric similarity and operating similarity. The system was divided into four parts： 3D display module, user interface module, data process module and control module. In implementing the system, SolidWorks was used to build the 3D models, and OSG and C ＋＋ were used in programming. Detailed process and the key technologies of implementing this system were described. The system was explored in many ways, firstly in the thought of reserving the human errors when people did experiment in the system; and also in the designation of software which had good scalability by keeping the independence of each module. The scalability of the system not only provided convenience in developing new experiments, but also was useful for researchers who had similar projects.