Detection of Illegal Movement in Radioactive Material Transportation Security Systems

IF 1 4区工程技术 Q3 NUCLEAR SCIENCE & TECHNOLOGY

Science and Technology of Nuclear Installations Pub Date : 2021-09-09 DOI:10.1155/2021/6670114

Tiejun Zeng, Xiaohua Yang, Yaping Wan, Panpan Jiang, L. Zhenghai

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引用次数: 0

Abstract

The loss and theft of radioactive material in transport can be attributed to the illegal movement. In order to distinguish it from the movement caused by the turbulence of the transportation vehicle, this paper proposes the criterion of “illegal movement” as the movement of radioactive materials outside the transportation compartment. Since the interior of the compartment is generally a metal environment, this paper proposes wireless signal strength data as a sensing method. The wireless signal strength data is filtered and converted into distance data. We construct a spatial triangle perpendicular to the top and sides of the compartment based on the distance data. When the radioactive material is inside the compartment, the angle between its corresponding point and the top plane of the compartment is less than 90°. Once it moves out of the compartment, the angle will be greater than 90°. Based on this, a sensing method of “illegal movement” based on spatial triangles is proposed. The simulation research shows that the scheme proposed in this paper is feasible.

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放射性物质运输安全系统中非法移动的检测

运输过程中放射性物质的丢失和盗窃可归因于非法运输。为了将其与运输车辆湍流引起的移动区分开来，本文提出了“非法移动”的标准，即放射性物质在运输车厢外的移动。由于车厢内部通常是金属环境，本文提出了无线信号强度数据作为一种传感方法。对无线信号强度数据进行滤波并将其转换为距离数据。我们根据距离数据构建了一个垂直于隔间顶部和侧面的空间三角形。当放射性物质在隔间内时，其对应点与隔间顶部平面之间的角度小于90°。一旦它移出隔间，角度将大于90°。在此基础上，提出了一种基于空间三角形的“非法运动”感知方法。仿真研究表明，本文提出的方案是可行的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science and Technology of Nuclear Installations NUCLEAR SCIENCE & TECHNOLOGY-

CiteScore

2.30

自引率

9.10%

发文量

审稿时长

4-8 weeks

期刊介绍： Science and Technology of Nuclear Installations is an international scientific journal that aims to make available knowledge on issues related to the nuclear industry and to promote development in the area of nuclear sciences and technologies. The endeavor associated with the establishment and the growth of the journal is expected to lend support to the renaissance of nuclear technology in the world and especially in those countries where nuclear programs have not yet been developed.