核辐射监测全沉浸式VR训练系统设计与实现  

Design and implementation of a fully immersive VR training system for nuclear radiation monitoring

作　　者：罗中兴 左莉 罗昆升 赵锋涛 李霄 张开 LUO Zhongxing;ZUO Li;LUO Kunsheng;ZHAO Fengtao;LI Xiao;ZHANG Kai(96901 Force of The People's Liberation Army,Beijing 100094,China)

机构地区：[1]中国人民解放军96901部队,北京100094

出　　处：《中国安全科学学报》2023年第1期130-135,共6页China Safety Science Journal

基　　金：军队后勤资助项目(AEP13R001)。

摘　　要：为解决核事故或其他涉核场景应急或处置训练过程中,受训人员暴露在核辐射环境下存在内外照射风险的问题,以核辐射监测训练为例,应用虚拟现实(VR)技术模拟训练过程。首先,构建点源辐射场多层介质衰减计算方法;其次,分段线性简化探测器角度响应曲线,以模拟探测器对方位角度的响应;然后,开发考虑物体遮挡以及探测器角度响应的虚拟探测器读数实时计算模型;最后,构建全沉浸式虚拟训练系统。结果表明:系统计算的虚拟探测器位置处剂量率值与美国保健物理学会(HPS)Rad Pro Calculator计算结果一致,符合物理规律;探测器读数根据探测器方位角和空间位置进行修正,可还原真实探测过程中探测器显示数值变化,受训者在虚拟训练过程中得到与真实核辐射监测相似的反馈;从实时虚拟辐射场计算、核辐射监测设备仿真到人员全沉浸体验的系统优化设计,能够避免受训人员赴真核环境训练核辐射对身体健康的影响,有助于提高受训人员应急辐射监测能力水平。In order to solve the problem of internal and external exposure risk of trainees exposed to nuclear radiation environment during emergency or disposal training of nuclear accidents or other nuclear-related scenarios,VR technology was applied to simulate the training process by taking nuclear radiation monitoring training as an example.Firstly,the attenuation calculation method of multi-layer of point source radiation field was constructed.Secondly,the detector angular response curve was simplified by piecewise linearity to simulate the response of the detector to the azimuth angle.Then,a real-time calculation model of virtual detector reading considering object occlusion as well as detector angle response was developed.Finally,a fully immersive virtual training system was constructed.The results show that the dose rate at the virtual detector position calculated by the system is consistent with the results of Rad Pro Calculator of American Health Physics Society(HPS)which is in line with the physical law.The detector readings are corrected according to the azimuth and spatial position of the detector,which can restore the changes of the detector display values during the real detection process,and the trainees get feedback similar to the real nuclear radiation monitoring during the virtual training process.The system optimization design from real-time virtual radiation field calculation,nuclear radiation monitoring equipment simulation to full immersion experience of personnel can avoid the impact of nuclear radiation on the health of trainees in eukaryotic environment training,and help to improve the level of emergency radiation monitoring capability of trainees.

关 键 词：核辐射监测 全沉浸式 虚拟现实(VR) 训练系统 辐射场 角度响应 多细节层次(LOD) 

分 类 号：X924.3[环境科学与工程—安全科学] TP391.9[自动化与计算机技术—计算机应用技术]