Novel NDIR CO2 sensor for indoor air quality monitoring

被引：0

作者：

Yi, SH ^{[1
]}

Park, YH ^{[1
]}

Han, SO ^{[1
]}

Min, NK ^{[1
]}

Kim, ES ^{[1
]}

Ahn, TH ^{[1
]}

机构：

[1] Chungju Natl Univ, Dept Mech Engn, Chungbuk 380702, South Korea

来源：

TRANSDUCERS '05, DIGEST OF TECHNICAL PAPERS, VOLS 1 AND 2 | 2005年

关键词：

optical cavity; NDIR CO2 gas sensor; air quality monitoring; elliptical mirrors;

D O I：

暂无

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

This paper describes NDIR CO2 gas sensor with novel optical cavities and two elliptical mirrors that are optimized for the optical path and light intensity. The new structures have two distinct features: one is focusing of infrared (IR) light onto the detector with the minimum cavity volume, and the other is an increased optical path length in order to enhance the sensitivity and accuracy. The developed sensor module shows about 360 mV voltage differences from 0 to 2000 ppm CO2 concentration with 18,000 amplification gain. The response time of sensor module is around 30 sec.

引用

页码：1211 / 1214

页数：4

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