摘要
针对电子检测装置在甲烷气体浓度检测时存在易燃易爆等安全隐患,本文提出了一种基于光纤耦合技术的单色光谱吸收法检测甲烷气体浓度的方案。给出了单色光源的选择依据,设计了基于光纤耦合技术的单色光谱吸收法检测装置,提出了应用Matlab对甲烷气体浓度与输出电压两组数据进行线性拟合。通过输出电压预测出甲烷气体浓度,并检测了预测值与真实值的误差。实验结果表明,将光纤耦合技术应用于单色光谱吸收法检测甲烷气体浓度,可以在无电力介入的情况下对甲烷气体浓度进行实时检测,误差不超过2%。
In allusion to flammable and explosive safety problems of electronic testing equipment in methane gas concentration and adjustable laser expensive prices,put forward an application of coupling technique of monochromatic spectrum tests to detect methane gas concentration.The choice of monochromatic light source is given based on,designed a monochromatic spectrum absorption detection device based on optical fiber coupling technology.Application of Matlab is proposed for methane gas concentration and two sets of data output voltage linear fitting.Through the output voltage to predict methane gas concentration,and exam the error of the predicted values and the real value.The experimental results show that optical fiber coupling technology was applied to monochromatic spectrum absorption method to detect methane gas concentration can be without power in real-time detection of methane gas concentration,error less than 2%.
出处
《激光杂志》
CAS
CSCD
北大核心
2014年第11期60-62,共3页
Laser Journal
关键词
光纤耦合技术
单色光谱吸收法
线性拟合
甲烷浓度
实时检测
Optical fiber coupling technology
Monochromatic absorption spectrum
Linear fitting
Methane concentration
Real-time detection
