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- Title
Concentration Retrieval in a Calibration-Free Wavelength Modulation Spectroscopy System Using Particle Swarm Optimization Algorithm.
- Authors
Zhang, Tingting; Sun, Yongjie; Wang, Pengpeng; Zhu, Cunguang
- Abstract
This paper develops a concentration retrieval technique based on the particle swarm optimization (PSO) algorithm, which is used for a calibration-free wavelength modulation spectroscopy system. As compared with the commonly used technique based on the Levenberg–Marquardt (LM) algorithm, the PSO-based method is less dependent on the pre-characterization of the laser tuning parameters. We analyzed the key parameters affecting the performance of the PSO-based technique and determined their optimal parameter values through testing. Furthermore, we conducted a comparative analysis of the efficacy of two techniques in detecting C2H2 concentration. The results showed that the PSO-based concentration retrieval technique is about 63 times faster than the LM-based one in achieving the same accuracy. Within 5 s, the PSO-based technique can produce findings that are generally consistent with the values anticipated.
- Subjects
PARTICLE swarm optimization; MODULATION spectroscopy; WAVELENGTHS
- Publication
Sensors (14248220), 2023, Vol 23, Issue 14, p6374
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s23146374