利用TDLAS技术的多点甲烷气体全量程监测

HFCAS OpenIR

	利用TDLAS技术的多点甲烷气体全量程监测
其他题名	Multi-point full range monitoring of methane based on TDLAS technology
	2017
发表期刊	红外与激光工程
ISSN	1007-2276
摘要	甲烷气体是一种对人体和环境有严重危害的气体，特别在煤矿、天然气罐、气站和石油化工等安全生产领域，对甲烷气体的泄漏监测至关重要。利用可调谐半导体激光吸收光谱技术（TDLAS），选择1653．72nm波长作为甲烷气体直接吸收检测的中心波长，使用微透镜设计了14cm光程吸收池建立了一套浓度范围为0—100％全量程甲烷在线监测系统，利用分束器分成多路对不同位置进行监测，通过小波变换对吸收信号进行降噪处理，提高信噪比，使系统的最低测量极限达到335ppm（1ppm=10-6），并将自行研制的多点全量程激光甲烷传感器与商用红外甲烷气体探测器进行对比实验，结果表明：该系统具有测量稳定性好、测量范围大、响应速度快、免调校、测量探头本征安全、低成本等优点，完全有能力满足各行业的使用需求。
其他摘要	Methane is a especially significant in dangerous gas for humans colliery, petrochemical, gas and tank ambience, zone, gas and methane gas leak detection is station as well as any other safe fields. The fundamental of Tunable Diode Laser Absorption Spectroscopy （TDLAS） was introduced, the center wavelength at 1 653.72 nm was selected for the absorption of methane detection. Also, a 14 cm optical path reflection cell with micro-lenses was designed. The on-line detection system was tested with the 0-100% methane. And also, it can be used to monitor different positions with a beam splitter. In order to improve the signal-noise ratio （SNR）, wavelet transform was used to reduce noise of absorption signals. The detection limit was 335 ppm （1 ppm=10-6）. A comparison results between the homemade multi-point full-range laser methane sensor and the commercial infrared gas detector were proved that the system has many advantages to meet the requirements of the majority of industry monitoring, such as： the good stability, full range, fast response, calibration free, safe latent, anti- electric magnetic interference, low cost etc.
关键词	甲烷（瓦斯）浓度可调谐半导体激光吸收光谱技术全量程微型吸收池在线监测预警
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:6071397
引用统计	被引频次：3[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/68318
专题	中国科学院合肥物质科学研究院
推荐引用方式 GB/T 7714	. 利用TDLAS技术的多点甲烷气体全量程监测[J]. 红外与激光工程,2017,046.
APA	(2017).利用TDLAS技术的多点甲烷气体全量程监测.红外与激光工程,046.
MLA	"利用TDLAS技术的多点甲烷气体全量程监测".红外与激光工程 046(2017).