典型事故三维虚拟仿真方法研究

典型事故三维虚拟仿真方法研究院系安全工程学院专业安全工程班级84050101学号2008040501024姓名苏芮指导教师程乃伟负责教师沈阳航空航天大学2012年6月沈阳航空航天大学毕业设计（论文）I摘要虚拟现实技术（VR）一直是信息领域研究、开发和应用的热点之一。它借助计算机构建出一个与现实环境十分相似的虚拟环境。本文阐述了虚拟现实技术的原理和VR在安全工程领域的应用前景和重要意义。通过建立事故模型，VR可应用于事故分析。通过VR建模可以实现对事故发展过程的三维模型动画显示，并利用计算机多媒体技术，实现真实感图形动态显示和音效合成，虚拟环境和立体显示，展现亲历事故的真实效果。本文以化工企业大型储罐区为研究对象，针对其场景复杂，规模较大，交互性要求高等特点。采用MultiGen-Creator开发平台建立事故厂区的三维模型，然后在VC++6.0平台的MFC框架下，利用Vega开发了基于多视角有毒气体泄漏可视化仿真系统，并对有毒气体进行控制。仿真系统具有直观逼真的交互界面，便于仿真过程的观测。关键词：虚拟现实；仿真；事故；漫游沈阳航空航天大学毕业设计（论文）IIAbstractVirtualrealitytechnologyhasalwaysbeenoneofthehotspotsinthefieldofinformationresearch,developmentandapplication.Itbuildupavirtualenvironmentthatisrathersimilitudetotherealisticenvironmentbycomputer.Thispaperdescribestheprincipleofvirtualrealitytechnology,theprospectsandtheimportanceofitsapplicationinthefieldofsafetyengineering.Throughtheestablishmentoftheaccidentmodel,theVRcanbeappliedtotheanalysisoftheaccident.VRmodelingcanbeachievedonthethree-dimensionalmodelanimationoftheaccidentdevelopmentprocess,andthedynamicgraphicaldisplay,soundsynthesis,virtualenvironmentsandthree-dimensionaldisplaycanberealizedbycomputermultimediatechnologytoshowthetrueeffectofthewitnessedaccident.Largestoragetankareaofthechemicalcompaniesiscomplexforitsscene,large-scaleandinteractiverequirements.Thethree-dimensionalmodelofthesiteareaoftheaccidentcanbebuiltbyMultiGen-Creatordevelopmentplatform.ThenintheMFCframeworkofVC++6.0platform,Vegacoulddevelopavisualsimulationsystembasedonmulti-perspectivetoxicgasleak,andcontroltoxicgases.Thesimulationsystemhasanintuitiveandrealisticinterfacetofacilitatetheobservationofthesimulationprocess.Keywords:Virtualreality;simulation;accident;roaming沈阳航空航天大学毕业设计（论文）III目录1绪论...................................................................................................................................1 1.1研究背景....................................................................................................................1 1.2国外研究现状及发展动态分析................................................................................1 1.3国内研究现状及发展动态分析................................................................................2 1.4研究意义....................................................................................................................3 1.5研究内容和目标........................................................................................................4 2典型事故介绍...................................................................................................................5 2.1事故简介....................................................................................................................5 2.2有毒气体介绍............................................................................................................5 2.3液氯泄漏时的应急措施............................................................................................5 3虚拟厂区的建立...............................................................................................................7 3.1三维虚拟场景的构建................................................................................................7 3.2总体规划....................................................................................................................7 3.3前期资料准备............................................................................................................8 3.4储罐区立体模型的构建............................................................................................8 3.5储罐区模型构建的实践过程....................................................................................9 4罐区实时场景漫游的实现.............................................................................................22 4.1储罐区实时场景的实现..........................................................................................22 4.2储罐区虚拟场景静态预览......................................................................................25 5液氯泄漏扩散模型的建立.............................................................................................28 5.1有毒气体模型的建立..............................................................................................28 5.2氯气扩散的数学模型及数据库的建立..................................................................29 6储罐区实时场景交互功能的实现.................................................................................36 6.1MFC程序的建立......................................................................................................36 6.2交互功能的实现......................................................................................................40 6.3软件的静态预览......................................................................................................42 沈阳航空航天大学毕业设计（论文）IV7结论.................................................................................................................................45 参考文献.............................................................................................................................46 致谢.......................................................................................................