Development and Measurements of a Mid-Infrared Multi-Gas Sensor System for CO, CO2 and CH4 Detection

被引:75
作者
Dong, Ming [1 ]
Zheng, Chuantao [1 ]
Miao, Shuzhuo [1 ]
Zhang, Yu [1 ]
Du, Qiaoling [1 ]
Wang, Yiding [1 ]
Tittel, Frank K. [2 ]
机构
[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Jilin, Peoples R China
[2] Rice Univ, Elect & Comp Engn Dept, 6100 Main St, Houston, TX 77005 USA
基金
中国国家自然科学基金;
关键词
mid-infrared absorption spectroscopy; multi-gas detection; gas sensor; LASER PHOTOACOUSTIC-SPECTROSCOPY; CARBON-MONOXIDE; ABSORPTION-SPECTROSCOPY; COMBUSTION; DEPLOYMENT; SMOKE;
D O I
10.3390/s17102221
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A multi-gas sensor system was developed that uses a single broadband light source and multiple carbon monoxide (CO), carbon dioxide (CO2) and methane (CH4) pyroelectric detectors by use of the time division multiplexing (TDM) technique. A stepper motor-based rotating system and a single-reflection spherical optical mirror were designed and adopted to realize and enhance multi-gas detection. Detailed measurements under static detection mode (without rotation) and dynamic mode (with rotation) were performed to study the performance of the sensor system for the three gas species. Effects of the motor rotating period on sensor performances were also investigated and a rotation speed of 0.4 rad/s was required to obtain a stable sensing performance, corresponding to a detection period of similar to 10 s to realize one round of detection. Based on an Allan deviation analysis, the 1 sigma detection limits under static operation are 2.96, 4.54 and 2.84 parts per million in volume (ppmv) for CO, CO2 and CH4, respectively and the 1 sigma detection limits under dynamic operations are 8.83, 8.69 and 10.29 ppmv for the three gas species, respectively. The reported sensor has potential applications in various fields requiring CO, CO2 and CH4 detection such as in coal mines.
引用
收藏
页数:14
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