Abstract:

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.

Key words: large-space virtual reality(VR), emergency drill training system, road transportation accidents of hazardous chemicals, scenario construction, comprehensive evaluation method