Spectroscopy and Spectral Analysis, Volume. 40, Issue 10, 3015(2020)
Algorithms for Calculating the Concentration of Gas Mixture Containting Different Background Gases in TDLAS Technology
Figures & Tables(8)
Fig. 1. Simulation results of absorption lines in different HWHH of gases with same concentrations
Fig. 2. Flow chart of fitting method based on Levenberg-Marquardt algorithm
Fig. 4. Direct absorption spectra and Lorentz spectra of three background gases
Fig. 5. Relative errors of concentration of peak value, integral and area coefficient algorithm under N2
Fig. 6. Relative errors of concentration of peak value, integral and area coefficient algorithm under Ar
Table 1. H2O Concentration in three algorithms under background gas of N2
View tableView in ArticleTable 1. H2O Concentration in three algorithms under background gas of N2
Test
PointMichell
/ppmPeak
AlgorithmRelative
Error/%Integral
AlgorithmRelative
Error/%Area Coefficient
AlgorithmRelative
Error/%1 12 100 10 861 -10.24 12 032 -0.56 12 035 -0.54 2 15 600 13 784 -11.64 15 454 -0.94 15 551 -0.31 3 19 290 17 614 -8.69 19 646 1.85 19 544 1.32 4 22 530 20 710 -8.08 23 000 2.09 22 834 1.35 5 25 730 23 726 -7.79 26 412 2.65 26 182 1.76
Table 2. H2O Concentration in three algorithms under background gas of Ar
View tableView in ArticleTable 2. H2O Concentration in three algorithms under background gas of Ar
Test
PointMichell
/ppmPeak
AlgorithmRelative
Error/%Integral
AlgorithmRelative
Error/%Area Coefficient
AlgorithmRelative
Error/%1 12 540 26 243 109.27 11 849 -5.51 12 708 1.34 2 15 410 31 522 104.56 14 493 -5.95 15 723 2.03 3 19 180 37 166 93.77 17 759 -7.41 19 726 2.85 4 22 430 40 906 82.37 20 384 -9.12 23 026 2.66 5 25 255 43 702 73.04 22 697 -10.13 26 004 2.96
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Hao CHEN, Yu JU, Li HAN, Yang CHANG. Algorithms for Calculating the Concentration of Gas Mixture Containting Different Background Gases in TDLAS Technology[J]. Spectroscopy and Spectral Analysis, 2020, 40(10): 3015
Paper Information
Category: Research Articles
Received: Aug. 26, 2019
Accepted: --
Published Online: Jun. 18, 2021
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