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Sub-ppb level HCN photoacoustic sensor employing dual-tube resonator enhanced clamp-type tuning fork and U-net neural network noise filter.
Wang, Lihao; Lv, Haohua; Zhao, Yaohong; Wang, Chenglong; Luo, Huijian; Lin, Haoyang; Xie, Jiabao; Zhu, Wenguo; Zhong, Yongchun; Liu, Bin; Yu, Jianhui; Zheng, Huadan.
Afiliación
  • Wang L; Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, and Department of Optoelectronic Engineering, Jinan University, Guangzhou 510632, China.
  • Lv H; Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, and Department of Optoelectronic Engineering, Jinan University, Guangzhou 510632, China.
  • Zhao Y; Guangdong Key Laboratory of Electric Power Equipment Reliability, Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou, Guangdong 510080, China.
  • Wang C; Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, and Department of Optoelectronic Engineering, Jinan University, Guangzhou 510632, China.
  • Luo H; Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, and Department of Optoelectronic Engineering, Jinan University, Guangzhou 510632, China.
  • Lin H; Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, and Department of Optoelectronic Engineering, Jinan University, Guangzhou 510632, China.
  • Xie J; Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, and Department of Optoelectronic Engineering, Jinan University, Guangzhou 510632, China.
  • Zhu W; Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, and Department of Optoelectronic Engineering, Jinan University, Guangzhou 510632, China.
  • Zhong Y; Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, and Department of Optoelectronic Engineering, Jinan University, Guangzhou 510632, China.
  • Liu B; Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology, School of Physics and Optoelectronic Engineering, Foshan University, Foshan 528225, China.
  • Yu J; Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, and Department of Optoelectronic Engineering, Jinan University, Guangzhou 510632, China.
  • Zheng H; Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, and Department of Optoelectronic Engineering, Jinan University, Guangzhou 510632, China.
Photoacoustics ; 38: 100629, 2024 Aug.
Article en En | MEDLINE | ID: mdl-39100196
ABSTRACT
Hydrogen cyanide (HCN) is a toxic industrial chemical, necessitating low-level detection capabilities for safety and environmental monitoring. This study introduces a novel approach for detecting hydrogen cyanide (HCN) using a clamp-type custom quartz tuning fork (QTF) integrated with a dual-tube acoustic micro-resonator (AmR) for enhanced photoacoustic gas sensing. The design and optimization of the AmR geometry were guided by theoretical simulation and experimental validation, resulting in a robust on-beam QEPAS (Quartz-Enhanced Photoacoustic Spectroscopy) configuration. To boost the QEPAS sensitivity, an Erbium-Doped Fiber Amplifier (EDFA) was incorporated, amplifying the laser power by approximately 286 times. Additionally, a transformer-based U-shaped neural network, a machine learning filter, was employed to refine the photoacoustic signal and reduce background noise effectively. This combination yielded a significantly low detection limit for HCN at 0.89 parts per billion (ppb) with a rapid response time of 1 second, marking a substantial advancement in optical gas sensing technologies. Key modifications to the QTF and innovative use of AmR lengths were validated under various experimental conditions, affirming the system's capabilities for real-time, high-sensitivity environmental monitoring and industrial safety applications. This work not only demonstrates significant enhancements in QEPAS but also highlights the potential for further technological advancements in portable gas detection systems.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Photoacoustics Año: 2024 Tipo del documento: Article Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Photoacoustics Año: 2024 Tipo del documento: Article Pais de publicación: Alemania