危化品公路运输事故应急演练大空间VR实训系统

Large-space virtual reality-based emergency drill training system for road transportation accidents of hazardous chemicals

为提升突发事件应急演练效果,克服现场演练成本高、危险性大、事故现场难以还原等难题,利用大空间虚拟现实(VR)技术,提出突发事件应急演练实训系统构建方法。首先,采用自然语言处理(NLP)技术研究应急要素抽取和关联分析模型,建立应急要素知识库和知识图谱,构建突发事件情景;其次,通过激光定位和反向动力学(IK)算法实现多人定位和肢体同步控制,构建非玩家角色(NPC)辅助演练库,开发应急演练前端系统;然后,研发后端管理一体化应急演练导调平台和应急演练效果自动评价模块,并进行软硬件系统集成;最后,针对危化品道路运输事故情景,研发应急演练大空间VR实训系统。结果表明:开展多人协同、高沉浸式的突发事件应急演练实训,有助于提高应急指挥层、专业处置层、社会公众层等相关人员的应急处置能力;突发事件应急演练大空间VR实训系统具有通用性,可为其他突发事件应急演练系统的开发提供基础平台和科学指导。

In order to improve the effectiveness of emergency drills and overcome the problems of high cost,high risk and difficult restoration of accident scenes,the construction method of a large-space VR-based emergency drill training system was proposed.Firstly,the mining model of emergency element extraction and correlation was developed based on natural language processing(NLP),and the emergency element knowledge base and knowledge map were built.Following that,the emergency scenario could be constructed.Second,the multi-person positioning and limb synchronization controlling were realized using laser positioning and reverse dynamics(IK).A non-player character(NPC)auxiliary drill library was built,and the front end system was developed.Third,the integrated emergency drill guidance and adjustment platform and the evaluation module of emergency drill effect were developed,and the software and hardware systems were Integrated.Last,the large-space virtual reality-based emergency drill training system for road transportation accidents of hazardous chemicals was developed.The results show that through multi-person collaborative and highly immersive training,the emergency response ability of relevant personnel,including the emergency command level,professional disposal level and the public level,had been improved.The above-mentioned methods and systems are universal,so the scientific guidance and basic platform could be provided for similar emergency events.