高灵敏度γ剂量率监测仪的设计与研制

Development of Miniature γ Dose Rate Monitor with High Sensitivity

介绍了一种基于单片机设计的小型高灵敏度γ剂量率监测仪,可对γ射线剂量率进行连续监测的同时,根据具体环境情况采用有线、无线两种通讯方式将监测数据发送给主机。仪器有交流和电池两种供电方式,可根据现场情况选用。文章详细介绍了仪器的系统结构,软、硬件各部分的设计思路和实现技术。经过应用实验表明,仪器的性能指标为:测量范围0.01μSv/h^20μSv/h,γ射线的灵敏度为900cps/μSv.h-1,死时间小于200μs,稳定性误差小于±10%。

this paper introduces a miniature γ dose rate monitor with high sensitivity which design based on single chip microcomputer, it can continue monitoring γ dose rate and then choose wire or wireless communications to sent the monitoring data to host according to the actual conditions. It has two kinds of power supply system, AC power supply system and battery which can be chose by concrete circumstances. The design idea and implementation technology of hardware and software and the system structure of the monitor are detailed illustrated in this paper. The experimental results show that measurable range is 0. 1mR/h-200mR/h, the sensitivity of γ is 90eps/mR. h-1, dead time below 200us, error of stability below t 10 %.