| 光谱学与光谱分析 |
|
|
|
|
|
| Research on Carbon Monoxide Multi-Parameter Detection Based on Ultra-Narrow-Linewidth Laser |
| CHEN Xiao, SUI Qing-mei, MIAO Fei, JIA Lei, WANG Jing, JIANG Ming-shun |
| School of Control Science and Engineering, Shandong University, Ji’nan 250061, China |
|
|
|
|
Abstract Through measuring and analyzing the infrared absorption spectrum of carbon monoxide, a kind of carbon monoxide multi-parameter detection system was designed based on the characteristics of ultra-narrow-linewidth laser and the spectrum scanning technology. A ultra-narrow-linewidth tunable semiconductor laser was utilized as light source and carbon monoxide temperature detection was achieved by measuring direct absorption spectra at different temperatures. According to temperature data and the principle of differential absorption concentration detection, carbon monoxide concentration and temperature were obtained simultaneously. With the spectrum scanning technology of ultra-narrow-linewidth laser, the spectra of carbon monoxide near the region of 6 354.179 and 6 383.09 cm-1 at different temperatures were measured, and also analyzed and fitted by Voigt profile. Finally the experiments indicate that the temperature measurement relative error is less than 4% and relative temperature fluctuation is less than 3.5%; the concentration measurement relative error is less than 5%, and the minimum detectable carbon monoxide is 0.05%. The multi-parameter detecting system has advantages of high accuracy and good stability, and can be used in power transformer fault gases on-line monitoring in real time.
|
|
Received: 2011-04-02
Accepted: 2011-07-13
|
|
|
|
Corresponding Authors:
CHEN Xiao
E-mail: cx_012003@yahoo.com.cn
|
|
[1] ZHAO Xiao-xiao, YUN Yu-xin, CHEN Wei-gen(赵笑笑, 云玉新, 陈伟根). Power System Protection and Control(电力系统保护与控制), 2009, 37(23): 189.
[2] Duval M. IEEE Electrical Insulation Magazine, 2002, 18(3): 8.
[3] WANG Jian, HUANG Wei, GU Hai-tao, et al(王 健, 黄 伟, 顾海涛, 等). Journal of Optoelectronics·Laser(光电子·激光), 2006, 17(10): 1233.
[4] Cai T D, Jia H, Wang G S, et al. Sensors and Actuators A, 2009, 152: 5.
[5] CHEN Dong, LIU Wen-qing, ZHANG Yu-jun, et al(陈 东, 刘文清, 张玉钧, 等). Chinese Journal of Lasers(中国激光), 2006, 33(11): 1552.
[6] ZHAO Jian-hua, ZHAO Chong-wen, WEI Zhou-jun(赵建华, 赵崇文, 魏周君). Acta Optica Sinica(光学学报), 2011, 30(2): 567.
[7] Uotila J, Koskinen V, Kauppinen J. Vibrational Spectroscopy, 2005, 38: 329.
[8] QIAO Xue-guang, WANG Jia, JIA Zhen-an, et al(乔学光, 王 佳, 贾振安, 等). Journal of Optoelectronics·Laser(光电子·激光), 2009, 20(7): 886.
[9] Liu J T C, Rieker G B, Jeffries J B, et al. Applied Optics, 2005, 44(31): 6701.
[10] Li H J, Farooq A, Jeffries J B, et al. J. Quannt. Spectros. Radiat. Transfer, 2008, 109: 122.
[11] Zhou X, Liu X, Jeffries J B, et al. Measurement Science and Technology, 2003, 14: 1459.
[12] LI Ning, YAN Jian-hua, WANG Fei, et al(李 宁, 严建华, 王 飞, 等). Journal of Combustion Science and Technology(燃烧科学与技术), 2008, 14(5): 458.
[13] Gharavi M, Buckley S G. Journal of Molecular Spectroscopy, 2005, 229: 78. |
|
|
|
