摘要
针对航空领域大型作业场所需要连续检测低浓度气体浓度的任务,设计了一种基于光离子化技术的气体检测系统。该系统以FPGA为控制芯片,采用光离子化技术,实现连续检测低浓度气体浓度的功能,同时因其响应速度快,使用更加方便。该系统对1×10^-6~200×10^-6浓度的异丁烯和乙烯、丙烯和二甲醚气体进行测试,结果表明,基于光离子化技术的气体检测系统能够在3 s内检测低浓度气体的浓度,分辨率为2×10^-6,同时自身具备防护能力,能够适应电磁干扰、强冲击等恶劣环境。
A gas detection system based on photoionization technology is designed for the task of continuously detecting the concentration of low-concentration gas aiming at large-scale workplace of the space field.The system uses FPGA as the control chip and uses photoionization technology to realize the function of continuously detecting the concentration of low-concentration gas.At the same time,because of its fast response,it is more convenient to use.The system tests the isobutylene and ethylene,propylene and dimethyl ether gases at a concentration of 1×10^-6~200×10^-6.The result shows that the gas detection system based on photoionization technology can detect the concentration of low-concentration gas within 3 s,with a resolution of 2×10^-6.At the same time,it has its own protection ability to adapt to harsh environments such as electromagnetic interference and strong shock.
作者
刘涛
王红亮
LIU Tao;WANG Hongliang(North University of China,National Defense Key Laboratory for Electronic Measurement Technology,Taiyuan 030051,China)
出处
《电子器件》
CAS
北大核心
2020年第1期157-161,共5页
Chinese Journal of Electron Devices
作者简介
刘涛(1992-),男,汉族,山西大同人,中北大学,硕士研究生,主要研究传感器设计,1903039473@qq.com;王红亮(1979-),男,汉族,河南人,副教授,博士,主要研究数据采集,测试系统集成,超声成像,1103223394@qq.com。
