| In recent years,production safety accidents occur frequently,and each time will cause huge loss of life and property.Both enterprises and the government attach great importance to it.Therefore,they have formulated a series of rules and regulations and emergency plans,and will periodically organize personnel to carry out emergency drills.However,organizing an on-site emergency drill will invest a lot of manpower and material resources Limited by various conditions,it is difficult to carry out,and it is difficult for the participants to get effective and sufficient training.At the same time,after the drill,the evaluation and analysis of the performance effect are also subjective evaluation,and it is difficult to improve the enthusiasm of the participants due to the lack of effective evaluation system standards.In view of the above problems,combined with the process and characteristics of the actual exercise,and the needs of scientific and objective evaluation after the drill,this paper develops a virtual emergency drilling system based on B / S structure to reduce the drilling cost and improve the emergency response ability of personnel.The system is based on B / S structure,including configuration module and drill module.The combination of the two parts realizes the secondary configuration of the basic scene.The particle system and animation system of unity3 d engine are used to realize the accident simulation of fire and gas leakage as well as various character animation effects.It also supports online generation of evacuation routes and preview of various effects.Secondly,the system is optimized from many aspects to improve the user experience.Grid merging and LOD technology are used for comprehensive optimization on the screen.At the same time,a suitable network communication framework is designed to ensure the smooth transmission of network messages.The system adopts distributed deployment of data service,application service,resource service and web service to ensure the stability of each service.The research results have been applied to the emergency simulation drills of many enterprises,which can help enterprises find out the deficiencies of the existing plans,fully exercise the personnel,and improve their ability to deal with emergencies.At the same time,it can help enterprises complete the training of related businesses and effectively improve the comprehensive emergency capability of enterprises.It can be used in enterprises and industrial parks that need emergency simulation drills Good promotion and application value. |