矿用光纤气体检测中的最小二乘拟合方法研究

doi:10.3976/j.issn.1002-4026.2015.01.008

山东科学 ›› 2015, Vol. 28 ›› Issue (1): 47-50.doi: 10.3976/j.issn.1002-4026.2015.01.008

矿用光纤气体检测中的最小二乘拟合方法研究

张婷婷,胡杰 ,魏玉宾,刘统玉

1. 山东省光纤传感重点实验室，山东省科学院激光研究所，山东济南 250014； 2. 济宁安然智能科技有限公司，山东济宁 272000

收稿日期:2014-12-25 出版日期:2015-02-20 发布日期:2015-02-20
作者简介:张婷婷（1984-），女，助理研究员，研究方向为光纤多种气体检测。Email：doudou-218@163.com
基金资助:
山东省自主创新成果转化重大专项(2011ZHZX1A0107，2014ZZCX03405)

Least squares fitting in the detection for mine optical fiber gas detection

ZHANG Tingting, HU Jie,WEI Yubin, LIU Tongyu

1. Shandong Provincial Key Laboratory of Optical Fiber Sensing Technology, Laser Institute, Shandong Academy of Sciences, Jinan 250014, China; 2. Jining Anran Intelligent Technology Co. Ltd., Jining 272000, China

Received:2014-12-25 Online:2015-02-20 Published:2015-02-20

摘要/Abstract

摘要： 由于矿用光纤气体检测系统中线性最小二乘拟合方法只适用于光谱吸收率小于0.1的气体检测，针对光谱吸收率增大时气体吸收谱线与浓度的变化呈现非线性的问题，本文采用阻尼最小二乘拟合算法进行气体浓度的计算。实验结果表明，改进的矿用光纤气体检测系统检测极限由原来的100 ppm提高到了30 ppm量级，简化了标定程序，能够更好地满足煤矿安全生产的需求。

关键词: 阻尼最小二乘拟合, 可调谐二极管激光光谱吸收(TDLAS), 光纤气体检测, 采空区, 自然发火

Abstract: Linear least squares fitting is only applicable to gas detection whose spectral absorption rate is less than 0.1 in coal mine optical fiber gas detection. We present the calculation for gas concentration with damped least squares fitting for the nonlinear issue between the varieties of gas absorption spectrum and concentration if spectral absorption rate increases. Experimental results show that the detection limitation of the method based gas detector is improved from 100 ppm to 30 ppm.Data calibration procedure is also simplified, so the method can better satisfy the requirements of coal mines for secure production.

Key words: damped least square fitting, tunable diode laser absorption spectroscopy (TDLAS), optical fiber gas detection, coal goaf area, spontaneous combustion

中图分类号:

TD712

张婷婷,胡杰,魏玉宾,刘统玉. 矿用光纤气体检测中的最小二乘拟合方法研究[J]. 山东科学, 2015, 28(1): 47-50.

ZHANG Tingting, HU Jie,WEI Yubin, LIU Tongyu. Least squares fitting in the detection for mine optical fiber gas detection[J]. SHANDONG SCIENCE, 2015, 28(1): 47-50.

矿用光纤气体检测中的最小二乘拟合方法研究

Least squares fitting in the detection for mine optical fiber gas detection

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