SEMI OpenIR  > 集成光电子学国家重点实验室
Undersized humidity detecting system based on infrared spectrum absorption
Ju, Yu; Xie, Liang; Han, Wei; Sun, Ke; Ju, Y.(juyu@semi.ac.cn)
2011
Source PublicationQiangjiguang Yu Lizishu/High Power Laser and Particle Beams
ISSN10014322
Volume23Issue:2Pages:363-366
AbstractAn undersized humidity detecting system based on infrared spectrum absorption is introduced. A vertical-cavity surface-emitting laser is used as the light source and provides lasers at1.854μm which is a main absorption peak of water vapor. To cover all humidity condition, vapor density is detected via two different methods, which are switched by the system automatically depending on measure results. In low-density condition, the ratio of the second-harmonic to fundamental signal is used to eliminate the interference due to light power variation. A/D conversion with over-sampling and digital lock in amplification enhance the accuracy of signal processing, and with IEEE802.11x protocol, automatic remote data acquisition is achieved.
metadata_83集成光电子学国家重点实验室
KeywordAmplification Analog To Digital Conversion Lasers Light Sources Sensors Signal Detection Signal Processing Standards Surface Emitting Lasers Water Absorption Water Vapor
Subject Area光电子学
Indexed ByEI
Language中文
Date Available2012-06-13
Document Type期刊论文
Identifierhttp://ir.semi.ac.cn/handle/172111/22958
Collection集成光电子学国家重点实验室
Corresponding AuthorJu, Y.(juyu@semi.ac.cn)
Recommended Citation
GB/T 7714
Ju, Yu,Xie, Liang,Han, Wei,et al. Undersized humidity detecting system based on infrared spectrum absorption[J]. Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams,2011,23(2):363-366.
APA Ju, Yu,Xie, Liang,Han, Wei,Sun, Ke,&Ju, Y..(2011).Undersized humidity detecting system based on infrared spectrum absorption.Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams,23(2),363-366.
MLA Ju, Yu,et al."Undersized humidity detecting system based on infrared spectrum absorption".Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams 23.2(2011):363-366.
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