新型放射性物品运输安保系统及其非法移动感知方法  

A New Type Radioactive Material Transportation Security System and Its Illegal Movement Sensing Method

作　　者：曾铁军 阳小华[1,3,4] 万亚平 蒋盼盼[1,4] 刘征海[1,3] 毛宇 Zeng Tiejun;Yang Xiaohua;Wan Yaping;Jiang Panpan;Liu Zhenghai;Mao Yu(School of Nuclear Science and Technology,University of South China,Hengyang 421001,China;School of Electrical Engineering,University of South China,Hengyang 421001,China;CNNC key laboratory on high trusted computing,Hengyang 421001,China;Schoolof Computer,University of South China,Hengyang 421001,China)

机构地区：[1]南华大学核科学技术学院,衡阳421001 [2]南华大学电气工程学院,衡阳421001 [3]南华大学计算机学院,衡阳421001 [4]中核集团高可信计算重点学科实验室,衡阳421001

出　　处：《核安全》2022年第4期19-25,共7页Nuclear Safety

基　　金：中央军委科技委国防科技创新特区项目,项目编号:18-163-15-LZ-001-002-09;博士基金项目:放射性物品运输安保非授权移动探测技术研究,项目编号:220XQD046。

摘　　要：放射性物品运输过程的安保相对于固定场合较为薄弱。为了提高放射性物品运输过程的安保水平,本文基于项目团队提出的个体自主安全智能技术,构建了一种新型放射性物品运输安保系统。为了区分丢失与被盗导致的放射性物品非法移动与运输车辆颠簸导致的移动,本文提出了基于面积比较的非法移动检测方法。在运输车厢内4个顶部角度处布置的锚节点轮流广播无线信号,安装在放射性物品上的个体自主安保智能装置提取相应的无线信号强度,经滤波后转换为空间距离。基于距离数据构建出放射性物品自主智能装置与4个锚节点之间的三角形。计算出这些三角形面积之和,将它与代表车厢内部面积的锚节点组成四边形面积进行比较。若结果大于一定阈值则认为发生了非法移动。仿真研究表明,本文提出的方案是可行的。The security during the transportation of radioactive materials is relatively weaker compared to fixed places. In order to improve the security level during the transportation of radioactive materials, a new type radioactive material transportation security system is constructed based on the individual self-security intelligence technology proposed by the project team. In order to distinguish the illegal movement of radioactive materials caused by the loss and theft from the movement caused by the turbulence of transportation vehicles, this paper proposes an illegal movement detection method based on area comparison. Anchor nodes arranged at 4 top angles in the transportation compartment broadcast wireless signals in turn. The individual self-security intelligence devices installed on radioactive material container extract the corresponding wireless signal strengths and convert them into spatial distances after filtering. Based on the distance data, 4 triangle between the self-security device and the 4 anchor nodes is constructed. Calculate the sum of the area of these triangles and compare it with the area of the quadrilateral formed by anchor nodes which represents the internal area of the compartment. If the result is greater than a certain threshold, it is considered that an illegal movement has occurred. The simulation research shows that the scheme proposed in this paper is feasible.

关 键 词：放射性物品 自主安全智能 运输安保系统 非法移动 

分 类 号：TL93[核科学技术—辐射防护及环境保护]