Near-Infrared Off-Axis Integrated Cavity Output Spectroscopic Dual Greenhouse Gas Sensor Based on FPGA for in situ Application

doi:10.1109/access.2022.3203701

CIOMP OpenIR

	Near-Infrared Off-Axis Integrated Cavity Output Spectroscopic Dual Greenhouse Gas Sensor Based on FPGA for in situ Application
	J. N. Wang; Y. H. Chuai; P. B. Li and G. Y. Lin
	2022
发表期刊	Ieee Access
ISSN	2169-3536
卷号	10 页码:93901-93909
摘要	In this study, we investigated the trade-off between the applicable field performance and the high sensitivity of infrared absorption sensors and provided an optimization scheme. A near-infrared greenhouse gas sensor was developed based on off-axis integrated cavity output spectroscopy (OA-ICOS) for optimal detection performance with a highly integrated design. The developed sensor included a 12 cm compact cavity length with an effective absorption path length of similar to 68.2 m, simultaneously focused on carbon dioxide (CO2) and methane (CH4) detection. Different from in-lab studies, the whole driving and signal processing functions were realized by a single FPGA processer. Using a calibration experiment with limited hardware resources, the developed optimized locked-in amplifier and denoising scheme improved the precision levels by similar to 3.2 times compared to a traditional design. An Allan deviation analysis showed that the minimum detection limits were optimized to 0.9 ppmv (CH4) and 21 ppmv (CO2). A field application was carried out in the town of SheLin over the course of 1 day, and the measurement results conformed to the gas diffusion, biological photosynthesis and respiration characteristics, which indicated the potential of the sensor for in situ applications. This work reveals the relationship between limited hardware resources and detection performance and provides an optimization scheme to exploit compact OA-ICOS sensors with improved sensitivity.
DOI	10.1109/access.2022.3203701
URL	查看原文
收录类别	sci ; ei
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/66898
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	J. N. Wang,Y. H. Chuai,P. B. Li and G. Y. Lin. Near-Infrared Off-Axis Integrated Cavity Output Spectroscopic Dual Greenhouse Gas Sensor Based on FPGA for in situ Application[J]. Ieee Access,2022,10:93901-93909.
APA	J. N. Wang,Y. H. Chuai,&P. B. Li and G. Y. Lin.(2022).Near-Infrared Off-Axis Integrated Cavity Output Spectroscopic Dual Greenhouse Gas Sensor Based on FPGA for in situ Application.Ieee Access,10,93901-93909.
MLA	J. N. Wang,et al."Near-Infrared Off-Axis Integrated Cavity Output Spectroscopic Dual Greenhouse Gas Sensor Based on FPGA for in situ Application".Ieee Access 10(2022):93901-93909.

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