摘要
针对多组分气体的光声检测理论进行了研究,提出多组分气体检测腔的2种不同设计方法,分别是多腔检测法与单腔检测法,总结给出2种结构腔的优势与不足。在所选光源无交叉吸收和调制频率无重合的条件下,采用单腔多频率锁相法进行混合气体光声试验,结果表明单腔多组分光声检测方法准确可行。
This paper analyzed the absorption theory among multi-component gases and put forward？ the？ cells design meth- ods, which were multiple cavity detection and single cavity detection. And then, according to the method of single cavity detection, the photoacoustic resonant cell transformed from Helmhohz cavity was used to detect photoacoustic signal of multi-gas. The result demonstrates that this method used to test multi-gas is feasible.
出处
《仪表技术与传感器》
CSCD
北大核心
2013年第10期42-43,64,共3页
Instrument Technique and Sensor
基金
国家自然科学基金项目(11274048)
博士后基金项目(2012M520192)
关键词
光声光谱
多组分气体检测
亥姆霍兹腔
共振腔
photoacoustic spectroscopy
multi-gas sensing
helmhohz cavity
resonant cell
