Portable X/gamma-ray survey meter based on the Internet of Things network for measuring the environmental radiation distribution

In this study, we developed a portable X/gamma-ray survey meter for large-scale distributed real-time monitoring of the ambient dose equivalent rate in the surrounding environment, using a silicon photomultiplier coupled with a CsI(Tl) scintillator. This innovation is integrated into an Internet of Things (IoT) network. The device realizes a wide range of dose rate measurements by switching the frequency of a pulse-frequency modulation (PFM) -type DC-DC power supply mode. The energy response is improved through Geant4 simulation and multicomparator design. The energy response of the survey meter ranges from 48 keV to 1.3 MeV, encompassing common protection level applications. It effectively measures gamma radiation dose rates ranging between 0.1 uSv/h and 100 mSv/h for Co-60. Temperature compensation of the detector was achieved through a series of experiments; the meter exhibits a deviation of -25% to +25% at temperatures between -40 and +40℃. 

搜集汇总

背景与挑战

背景概述

该数据集描述了一种基于物联网网络的便携式X/γ射线测量仪，用于环境辐射分布的大范围实时监测。设备采用硅光电倍增管和CsI(Tl)闪烁体，能量响应范围为48 keV至1.3 MeV，可测量Co-60的γ辐射剂量率从0.1 uSv/h到100 mSv/h，并在宽温度范围内通过温度补偿实现稳定性能。