{"title":"基于混叠光谱解耦模型和特征值提取的近红外变压器故障气体C2H4/CH4传感器","authors":"Guolin Li, Longju Li, Jiarui Li, Yingjie Zhao, Ruixiang Sun, Haoran Yuan, Guangzhao Cui, Jianyu Gu, Jinxu Yang, Wenxuan Zhao, Xin Zhang","doi":"10.1007/s00340-025-08492-1","DOIUrl":null,"url":null,"abstract":"<div><p>A C<sub>2</sub>H<sub>4</sub>/CH<sub>4</sub> two-component synchronous monitoring sensor based on aliasing spectra decoupling model is designed. The distributed feedback (DFB) laser with the central wavelength of 1626 nm and the multi-pass gas cell (MPGC) with an effective optical path of 20 m are integrated into the sensor. The aliasing spectra decoupling model effectively decouples second harmonic (2f) signals, and its decoupling performance is validated through carrying out concentration monitoring experiments of mixed gases C<sub>2</sub>H<sub>4</sub> and CH<sub>4</sub>, where the concentration range of C<sub>2</sub>H<sub>4</sub> is 4–100 ppm and the CH<sub>4</sub> is 20–500 ppm. Under the background of severe aliasing of C<sub>2</sub>H<sub>4</sub> and CH<sub>4</sub> absorption lines, the sensor can still achieve high-precision inversion of each single gas. Among them, the root-mean-square error (RMSE) of C<sub>2</sub>H<sub>4</sub> is 0.7491 ppm, while for CH<sub>4</sub> it is 10.4028 ppm. In comparison to the least squares method, the precision of concentration inversion is significantly enhanced. This indicates that the aliasing spectra decoupling model is capable of mitigating the impact of aliasing absorption lines on the accuracy of concentration inversion.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 7","pages":""},"PeriodicalIF":2.0000,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A near-infrared transformer fault gases C2H4/CH4 sensor based on aliasing spectra decoupling model with eigenvalues extraction\",\"authors\":\"Guolin Li, Longju Li, Jiarui Li, Yingjie Zhao, Ruixiang Sun, Haoran Yuan, Guangzhao Cui, Jianyu Gu, Jinxu Yang, Wenxuan Zhao, Xin Zhang\",\"doi\":\"10.1007/s00340-025-08492-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A C<sub>2</sub>H<sub>4</sub>/CH<sub>4</sub> two-component synchronous monitoring sensor based on aliasing spectra decoupling model is designed. The distributed feedback (DFB) laser with the central wavelength of 1626 nm and the multi-pass gas cell (MPGC) with an effective optical path of 20 m are integrated into the sensor. The aliasing spectra decoupling model effectively decouples second harmonic (2f) signals, and its decoupling performance is validated through carrying out concentration monitoring experiments of mixed gases C<sub>2</sub>H<sub>4</sub> and CH<sub>4</sub>, where the concentration range of C<sub>2</sub>H<sub>4</sub> is 4–100 ppm and the CH<sub>4</sub> is 20–500 ppm. Under the background of severe aliasing of C<sub>2</sub>H<sub>4</sub> and CH<sub>4</sub> absorption lines, the sensor can still achieve high-precision inversion of each single gas. Among them, the root-mean-square error (RMSE) of C<sub>2</sub>H<sub>4</sub> is 0.7491 ppm, while for CH<sub>4</sub> it is 10.4028 ppm. In comparison to the least squares method, the precision of concentration inversion is significantly enhanced. This indicates that the aliasing spectra decoupling model is capable of mitigating the impact of aliasing absorption lines on the accuracy of concentration inversion.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":474,\"journal\":{\"name\":\"Applied Physics B\",\"volume\":\"131 7\",\"pages\":\"\"},\"PeriodicalIF\":2.0000,\"publicationDate\":\"2025-06-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Physics B\",\"FirstCategoryId\":\"4\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s00340-025-08492-1\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Physics B","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1007/s00340-025-08492-1","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"OPTICS","Score":null,"Total":0}
A near-infrared transformer fault gases C2H4/CH4 sensor based on aliasing spectra decoupling model with eigenvalues extraction
A C2H4/CH4 two-component synchronous monitoring sensor based on aliasing spectra decoupling model is designed. The distributed feedback (DFB) laser with the central wavelength of 1626 nm and the multi-pass gas cell (MPGC) with an effective optical path of 20 m are integrated into the sensor. The aliasing spectra decoupling model effectively decouples second harmonic (2f) signals, and its decoupling performance is validated through carrying out concentration monitoring experiments of mixed gases C2H4 and CH4, where the concentration range of C2H4 is 4–100 ppm and the CH4 is 20–500 ppm. Under the background of severe aliasing of C2H4 and CH4 absorption lines, the sensor can still achieve high-precision inversion of each single gas. Among them, the root-mean-square error (RMSE) of C2H4 is 0.7491 ppm, while for CH4 it is 10.4028 ppm. In comparison to the least squares method, the precision of concentration inversion is significantly enhanced. This indicates that the aliasing spectra decoupling model is capable of mitigating the impact of aliasing absorption lines on the accuracy of concentration inversion.
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Features publication of experimental and theoretical investigations in applied physics
Offers invited reviews in addition to regular papers
Coverage includes laser physics, linear and nonlinear optics, ultrafast phenomena, photonic devices, optical and laser materials, quantum optics, laser spectroscopy of atoms, molecules and clusters, and more
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Publishing essential research results in two of the most important areas of applied physics, both Applied Physics sections figure among the top most cited journals in this field.
In addition to regular papers Applied Physics B: Lasers and Optics features invited reviews. Fields of topical interest are covered by feature issues. The journal also includes a rapid communication section for the speedy publication of important and particularly interesting results.
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