面向道路应急的虚拟演练环境设计与系统研发
Design and System Development of Virtual Exercise Environment for Road Emergency

针对真实道路应急的演练环境不易搭建、场景单一且成本巨大等问题，将虚拟地理环境的理念与交通行业的道路应急演练相结合，研发面向道路应急的多用户场景协同应急虚拟演练系统。采用模块化理念设计构建三维情景库，构建距离转换算法提升三维演练环境帧数。引入距离场概念设计水体仿真算法，结合三维动画渲染软件的动力学仿真技术实现多种突发事件虚拟情景仿真，并基于UE4引擎，实现人机交互逻辑和多用户网络协同功能。结果表明：道路应急虚拟演练系统能够提供符合交通行业真实应急业务的、场景效果逼真的、科学的虚拟演练环境，为提升交通行业应急处置人员专业能力提供有效的工具平台。
Aiming at the problems of difficult construction of real road emergency drill environment, single scene and huge cost, combining the concept of virtual geographical environment with road emergency drill in transportation industry, a multi-user scenario collaborative emergency virtual drill system for road emergency was developed. The modular concept was adopted to design and construct the 3D scene library, and the distance conversion algorithm was constructed to improve the frame number of the 3D drill environment. The concept of distance field is introduced to design the water body simulation algorithm, and the dynamic simulation technology of 3D animation rendering software is combined to realize the virtual scene simulation of various emergencies. Based on the UE4 engine, the human-computer interaction logic and multi-user network coordination functions are realized. The results show that the road emergency virtual exercise system can provide a realistic and scientific virtual exercise environment that conforms to the real emergency business of the transportation industry and provides an effective tool platform for improving the professional ability of emergency responders in transportation industry.