基于OSG引擎的森林火势蔓延仿真系统关键技术研究  

Research on Forest Fire Spread Simulation System Based on OSG

作　　者：邵磊 严小天[3,4,5] 刘剑 刘玉明 Shao Lei;Yan Xiaotian;Liu Jian;Liu Yuming(CASIC Simulation Technology Co.,Ltd,Beijing 100854,China;National Engineering Research Center of Complex System Simulation Technology Application,Beijing 100854,China;Beihang-Goer Joint VR Research,Qingdao 266308,China;Qingdao VR Research Lab,Qingdao 266308,China;National Virtual Reality Innovation Center(Qingdao),Qingdao 266308,China;Beihang University,Beijing 100191,China;Tsinghua University,Beijing 100084,China)

机构地区：[1]航天科工仿真技术有限责任公司,北京100854 [2]复杂系统仿真技术应用国家工程研究中心,北京100854 [3]北航歌尔虚拟现实研究院,山东青岛266308 [4]青岛虚拟现实研究院有限公司,山东青岛266308 [5]国家虚拟现实创新中心(青岛),山东青岛266308 [6]北京航空航天大学,北京100191 [7]清华大学,北京100084

出　　处：《系统仿真学报》2024年第5期1232-1241,共10页Journal of System Simulation

摘　　要：针对森林火势蔓延趋势的仿真推演需求,以及森林消防队伍的行动路线选择和实时路径生成的需要,提出了一种融合数字高程信息(digital elevation model,DEM)的扩展晶格模型,将地形的植被、受灾属性与地理高程信息进行结合,通过实时运算得到结果数据并转换为可渲染的资源形式,利用OSG三维渲染引擎将其呈现到最终用户层面。借助这一数据结构以及对应的关键算法技术的研究实现,完成了一套较为完整的森林火势蔓延趋势仿真和灭火演练系统。该系统具有灵活性高,仿真效率和效果较好,支持各种并行计算方法的特点,可以在相关行业和系统中广泛推广和使用。A novel expended lattice structure of DEM-Cell model incorporating DEM elevation information is proposed,in response to the requirements of extrapolation of trends and hazards of forest fire spread,as well as the need of route selection and real-time path optimization for rescuers.Combining vegetation attributes of meta cells with geographic elevation information,we develop a simulation and fire fighting exercise system that computing the resultant data in real time and converting it into render-able resource,which is directly used by the OSG engines.With the help of the same data structure and the corresponding key algorithms and technologies,we implement a complete set of forest fire spread simulation and firefighting drill system.Our firefighting system features high flexibility,better simulation efficiency and effectiveness,and support for various parallel computing methods,which can be widely promoted and used in related industries and systems.

关 键 词：火灾蔓延 实时渲染 扩展晶格模型结构 自适应寻路算法 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]