光谱学与光谱分析 |
|
|
|
|
|
Research on a Novel High-Precision Methane Concentration Detection System |
SONG Lin-li1, ZHOU Han-chang1, ZHANG Zhi-jie2 |
1. National Key Laboratory for Electronic Measurement Technology, North University of China, Taiyuan 030051, China 2. Key Laboratory of Instrumentation Science and Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, China |
|
|
Abstract In the gas concentration detection process using the characteristic spectrum absorption method, in order to improve the detection accuracy of the gas concentration, it often has to use the high-quality narrowband modulated laser and modulate wavelength to align with the characteristic absorption peaks of measured gas. But by this way, the cost of the laser and system requirements will be greatly increased. To use the existing portable, low-cost semiconductor laser conditions, at the same time it can obtain higher precision, conversion window differential absorption optical structure and the algorithm of differential characteristic absorption ratio was designed. Selection reason of position of the wavelength characteristic was analyzed, and steps to implement the processing algorithm were given. Systematically utilizing the combination method of conversion window and absorption gas chamber, by the method for calculating the ratio of the light intensity response, the light intensity from non-characteristic absorption peak position was divided out. So it achieved a similar detecting effect was achieved that used a narrow-band laser aligned to the feature absorption peak position. Experiments adopted MW-IR-1650 infrared laser, type SSM17-2 stepper motor control module, C30659 infrared detectors, and other devices. In the experiments, different concentrations of methane gas were tested, and experimental results show that the relative error of measurement was less than 2.0% within the range from 200 to 5 000 ppm. In summary, it’s proved that the system has high accuracy and stability.
|
Received: 2014-06-19
Accepted: 2014-10-14
|
|
Corresponding Authors:
SONG Lin-li
E-mail: songlinlinuc@163.com
|
|
[1] ZHANG Ying, WANG Hai-rong, GAO Xian-ni(张 英, 王海容, 高鲜妮). Piezoelectectrics & Acoustooptics(压电与声光), 2008, 30(2): 156. [2] YAN Jie, MENG Peng-hua(闫 洁, 孟鹏花). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2013, 33(8): 2153. [3] WANG Yan-ju, WANG Yu-tian, ZHANG Yu-yan(王艳菊, 王玉田, 张玉燕). Chinese Journal of Scientific Instrument(仪器仪表学报), 2006, 27(12): 1647. [4] ZHAO Ling, HE Xiu-li, JIA Jian(赵 玲, 何秀丽, 贾 建). Instrument Technique and Sensor(仪表技术与传感器), 2014, (2): 50. [5] WU Xi-jun, WANG Yu-tian, TIAN Rui-ling(吴希军, 王玉田, 田瑞玲). Chinese Journal of Sensors and Actuators(传感技术学报), 2010, 23(1): 14. [6] Cihelka J, Civis S, Matulkova I. ICTON Mediterranean Winter Conference, 2007, (1): 1. [7] Angelmahr M, Miklós A, Hess P. Applied Physics B: Lasers and Optics, 2006, 85(2-3): 285. [8] Kim Min-Soo, Lee Sang-Kwon. Journal of Loss Prevention in the Process Indusuries, 2009, 22(6): 990. [9] Curti F, Matera F, Tosi-Beleffi G M. International Conferences on Transparent Optical Networks, 2002, (1): 66. [10] WANG Yu-tian, LIU Jin, YANG Hai-ma(王玉田, 刘 瑾, 杨海马). Chinese Journal of Sensors and Actuators(传感技术学报), 2003, 16(3): 324. [11] Acosta Eva, Chamadoira Sara, Blendowske Ralf. Journal of the Optical Society of America, 2006, 23(3): 632. [12] Katie M Krause, Jerome Genest. Applied Optics, 2006, 45(19): 4686. [13] LI Li, ZHANG Yu, SONG Zhen-yu(李 黎, 张 宇, 宋振宇). Infrared(红外), 2007, 28(9): 29. |
[1] |
ZHENG Zhi-jie1, LIN Zhen-heng1, 2*, XIE Hai-he2, NIE Yong-zhong3. The Method of Terahertz Spectral Classification and Identification for Engineering Plastics Based on Convolutional Neural Network[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(05): 1387-1393. |
[2] |
ZHANG Zhong-xiong1, 2, 3, ZHANG Dong-li4, TIAN Shi-jie1, 2, 3, FANG Shi-yan1, 2, 3, ZHAO Yan-ru1, 2, 3*, ZHAO Juan1, 2, 3, HU Jin1, 2, 3*. Research Progress of Terahertz Spectroscopy Technique in Food Adulteration Detection[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(05): 1379-1386. |
[3] |
CHEN Yi-fan, LI Yun-jing, PENG Miao-miao, YANG Chun-yong*, HOU Jin, CHEN Shao-ping. Improvements of VIS-NIR Spectroscopy Model in the Prediction of TVB-N Using MIV Wavelength Selection[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(05): 1413-1419. |
[4] |
ZHANG Hu, HE Jian-ping*, LINYANG Sheng-lan. Three-Dimensional Arc Spectrum and Anti-Interference Decoupling in Micro Plasma Arc Welding[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(01): 48-53. |
[5] |
ZHOU Dan-lei1, 2. Sulfhydryl Modification and Spectral Measurement of Cytoglobin[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(09): 2868-2872. |
[6] |
WANG Jin-hua1, CAO Lan-jie1, XU Guo-qiang2*, FENG Xiao-xin3, WU Bing1, ZHANG Bo1. Research on Hyper-Spectral Test of Concrete Corrosion Product under Sodium Sulfate Attack[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(06): 1724-1730. |
[7] |
LI Jing1,2, LU Xu-tao1,2, Lü Hai-feng1,2, SUN Yun-qiang1,2 . Study on the Design of Explosive (HNS) Content Analysis System Based on THz Spectrum Monomer [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(11): 3506-3509. |
[8] |
LU Xu-tao1, LI Jing2, Lü Hai-feng3 . Portable High-Precision System for CH4 Concentration Detection in Mines based on the Laser Mode-Hopping [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(03): 846-849. |
[9] |
HU Yang-jun, ZHU Chun, CHEN Guo-qing*, ZHANG Yong, KONG Fan-biao, LI Run, ZHU Zhuo-wei, WANG Xu, GAO Shu-mei. Commercial Orange Juice Beverages Detection by Fluorescence Spectroscopy Combined with PCA-ED and PLSR Methods[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(08): 2143-2147. |
[10] |
WU Chen-kai, ZHANG Liang, SHEN Huang-tong, FU Xia-ping* . Investigation of Light Penetration Depth and Distribution Inside Citrus Tissue [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(03): 601-604. |
[11] |
TAO Lin-li1, 2, YANG Xiu-juan1, 2, DENG Jun-ming1, 2, ZHANG Xi1, 2* . Application of Near Infrared Reflectance Spectroscopy to Predict Meat Chemical Compositions: A Review [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(11): 3002-3009. |
[12] |
MA Zhi-bin, WU Jian-peng*, TAO Li-ping, CAO Wei, LI Guo-wei, WANG Jian-hua . Optical Emission Spectroscopy of MPCVD Plasma [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(09): 2562-2565. |
[13] |
YAN Jie, MENG Peng-hua . Research on Methane Concentration Monitoring System Based on Electro-Optical Modulation Interference[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(08): 2153-2156. |
[14] |
CAO Hui1, HU Luo-na1, ZHOU Yan2* . Quantitative Analysis Method of Natural Gas Combustion Process Combining Wavelength Selection and Outlier Spectra Detection [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(10): 2799-2804. |
[15] |
ZHAO Hui1,2, WANG Gao1,2, MA Tie-hua1,2. Based on THz Spectroscopy Detection Method for the Concentration of 1,3-Dinitrobenzene Volatile Gas[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(04): 902-905. |
|
|
|
|