摘要
为进一步提升对甲烷气体浓度测定的准确性和实时性,基于光纤传感器技术和微信号检测技术首先完成了光纤甲烷气体传感器的总体结构设计,重点完成了其中的感用光源和气室结构的选型设计,其中根据光纤甲烷气体传感器的应用环境提出了感用光源的选型原则,并最终确定采用半导体激光器为光源;分别对比反射型、透射型以及小型渐变折射率透镜气室结构的优劣势,确定采用小型渐变折射率透镜气室结构提高检测的灵敏度。最后,通过构建实验平台对传感器的光纤传播损耗、测试的精度和稳定性进行验证,并取得理想结果。
In order to further improve the accuracy and real-time performance of mine methane gas concentration measurement,the overall structure of optical fiber methane gas sensor was first completed based on optical fiber sensor technology and micro-signal detection technology Design,focusing on completing the selection design of the sensing light source and the gas chamber structure.According to the application environment of the fiber methane gas sensor,the selection principle of the sensing light source is put forward,and the semiconductor laser is finally determined as the light source;According to the advantages and disadvantages of the air cell structure of,transmission type and small graded index lens,it is determined that the small graded index lens air cell structure is used to improve the detection sensitivity.Finally,the optical fiber propagation loss,test accuracy and stability of the sensor are verified by constructing an experimental platform,and ideal results are obtained.
作者
崔颖慧
CUI Yinghui(Jinneng holding group Dadougou Coal Industry Co.,Ltd.,Datong,Shanxi 037003,China)
出处
《江西化工》
2022年第5期97-100,共4页
Jiangxi Chemical Industry
