Three-gas detection system with IR optical sensor based on NDIR technology

被引：88

作者：

Tan, Qiulin ^{[1
,2
]}

Tang, Licheng ^{[1
,2
]}

Yang, Mingliang ^{[1
,2
]}

Xue, Chenyang ^{[2
]}

Zhang, Wendong ^{[1
]}

Liu, Jun ^{[1
]}

Xiong, Jijun ^{[1
,2
]}

机构：

[1] N Univ China, Key Lab Instrumentat Sci & Dynam Measurement, Minist Educ, Taiyuan 030051, Shanxi, Peoples R China

[2] N Univ China, Sci & Technol Elect Test & Measurement Lab, Taiyuan 030051, Shanxi, Peoples R China

来源：

OPTICS AND LASERS IN ENGINEERING | 2015年 / 74卷

关键词：

Three-gas detection; Compensation method; NDIR; Optical sensor; MULTI-GAS SENSOR; DESIGN;

D O I：

10.1016/j.optlaseng.2015.05.007

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, a three-gas detection system with a environmental parameter compensation method is proposed based on Non-dispersive infra-red (NDIR) technique, which can be applied to detect multi-gas (methane, carbon dioxide and carbon monoxide). In this system, an IR source and four single-channel pyroelectric sensors are integrated in the miniature optical gas chamber successfully. Inner wall of the chamber coated with Au film is designed as paraboloids. The infrared light is reflected twice before reaching to detectors, thus increasing optical path. Besides, a compensation method is presented to overcome the influence in variation of environment (ambient temperature, humidity and pressure), thus leading to improve the accuracy in gas detection. Experimental results demonstrated that detection ranges are 0-50,000 ppm for CH4, 0-44,500 ppm for CO, 0-48,000 ppm for CO2 and the accuracy is +/- 0.05%. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：103 / 108

页数：6

共 24 条

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