基于塑料闪烁体的环境X-γ剂量率监测系统设计  

Design of Environmental X-γDose Rate Monitoring System Based on Plastic Scintillation Crystal

作　　者：李婷[1] 王玮[1] 段金松[1] 麻金龙 武旭东 LI Ting;WANG Wei;DUAN Jinsong;MA Jinlong;WU Xudong(Beijing Research Institute of Uranium Geology,Beijing 100029,China)

机构地区：[1]核工业北京地质研究院,北京100029

出　　处：《世界核地质科学》2023年第1期126-132,共7页World Nuclear Geoscience

摘　　要：环境X-γ辐射剂量率是衡量环境辐射水平的重要指标,为了实现环境X-γ剂量率的准确、快速监测,设计了一种基于塑料闪烁体的环境X-γ剂量率监测系统。探测器信号通过电流/频率转换电路转换为频率脉冲送入微控制器进行剂量率计算;系统设计了太阳能充电模块,为长期野外环境监测提供能源补充;数据通信设计引入无线蓝牙传输,结合智能终端APP,实现区域范围的放射性剂量监测。测试结果表明,系统的相对固有误差小于10%,归一化后相对137Cs的能量响应最大误差为13.9%,稳定工作温度范围为(-20~55)℃。该系统设计可用于野外长期环境辐射监测,为区域环境辐射监测网络的建设提供基础。The X-γdose rate is an important indicator to evaluate the environmental radiation level.In order to achieve the accurate and rapid monitoring of the X-γdose rate,an environmental X-γdose rate monitoring system based on plastic scintillator crystal was designed.The detected signal is converted into a frequency signal through the current/frequency conversion circuit and sent to the microcontroller for dose rate calculation.The system was designed with a solar charging module to provide energy supplement for long-term field radiation environment monitoring.The intelligent terminal app was designed and developed for data communication through wireless bluetooth transmission to realize regional radiation dose monitoring.The test results show that the relative inherent error of the system is less than 10%,and the maximum error of normalized energy response to 137Cs is 13.9%,the stable operating temperature range is(-20~55)℃.The system can be used for long-term radiation environment monitoring in the field and provides the basis for the construction of a regional environmental radiation monitoring network.

关 键 词：X-γ剂量率 辐射监测 电流/频率转换 蓝牙通信 

分 类 号：TL812.1[核科学技术—核技术及应用]