Water Vapor Detection System Based on Scanning Spectra

被引：0
|
作者：
Zhang, Shicong [1 ,2 ]
Wang, Qiang [1 ,2 ]
Zhang, Yan [1 ,2 ]
Song, Fujun [1 ,2 ]
Chen, Kun [3 ]
Chou, Guoqing [1 ,2 ]
Chang, Jun [1 ,2 ]
Wang, Pengpeng [1 ,2 ]
Kong, Delong [1 ,2 ]
Wang, Zongliang [1 ,2 ]
Wang, Weijie [1 ,2 ]
Liu, Yongning [1 ,2 ]
Song, Haiyong [1 ,2 ]
机构：
[1] Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Shandong, Peoples R China
[2] Shandong Univ, Shandong Prov Key Lab Laser Technol & Applicat, Jinan 250100, Shandong, Peoples R China
[3] Sch Shandong Prov Party Comm Communist Party Chin, Jinan 250021, Shandong, Peoples R China
来源：
PHOTONIC SENSORS | 2012年 / 2卷 / 01期
关键词：
Water-vapor detection; scanning spectra; detecting under high gas pressure; near-infrared absorption;
D O I：
10.1007/s13320-011-0038-z
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Scanning the absorption spectral line of water vapor through wavelength around 1368.597 nm is successfully used to measure the value of micro-moisture content. The synchronous superposition average of original signal algorithm based on labview is innovated and applied to detecting weak spectrum absorption signal instead of low pass filter. Two data processing methods are used to get the concentration of water vapor in ppm: one is a general formula method which has newly deduced a general formula to calculate the concentration of gas with temperature and beam intensity ratio when the pressure is equal to or greater than 1 atm; the other is engineering calibration method which is proved to have high resolution and accuracy with the fitted curve of beam intensity ratio and concentration in ppm when the temperature changes form 258 K to 305 K and the pressure ranges from 1 atm to 5 atm.
引用
收藏
页码：71 / 76
页数：6
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