摘要
本系统实现了放射性气溶胶的连续在线监测,并详细论述了放射性气溶胶连续监测仪的装置结构、硬件电路、执行流程及异常处理等方面的设计。系统采用IPC+ARM的控制结构,并嵌入数据库SQLite存储海量核数据等信息,提高了系统稳定性和执行效率。将多道能量甄别获得的数据用α/β比值法处理后,合理地嵌入ISO 11929-5推荐的多种方法,提高了浓度测量精度及响应时间。该监测仪已在核设施场所中长期稳定地运行。
Background： In the process of nuclear related production or processing, nuclear fuel and other radioactive substances will produce radioactive aerosols which is harmful to the environment and human health. The commercial available monitor of radioactive material is either poor in continuity or limited in measuring radioactive aerosols. Purpose： This study aims to design a radioactive aerosol monitor for continuous concentration surveillance of radioactive aerosol in real time. Method： This instrument＇s stability and efficiency has been improved with the IPC＋ARM architecture and the SQLite database which can store massive amounts of nuclear data and other information. After operating the spectral data which gathered by multi-channel pulse height analysis with α/β ratio method, we embedded some algorithms that recommended on ISO 11929-5 to calculate the concentration. Results： We have achieved a high precision and the instrument has been run steadily for a long time. Conclusion： This paper described the design for continuous monitoring of radioactive aerosol, and enhances the stability and efficiency of the system in hardware and software. Finally, in the processing of spectral data collected by multi-channel pulse amplitude analyzer, we have achieved a high precision with ISO 11929-5 algorithms and verified the feasibility of the system.
出处
《核技术》
CAS
CSCD
北大核心
2015年第3期31-35,共5页
Nuclear Techniques
基金
国家自然科学基金(No.41474159)
地学核技术四川省重点实验室开放基金(No.gnzds2014006)资助
