SU Lei-long1, JIANG Shu-bo1, CHENG Ming-xiao1, et al. Design on NIR spectrometer based on MEMS technology for gas detecting[J]. 2011, 30(10): 120-122. DOI: 10.13873/j.1000-97872011.10.009.
气体检测中基于MEMS技术的近红外光谱仪设计
摘要
根据传统近红外光谱仪的不足
利用MEMS微镜设计了近红外光谱仪的光路
并给出了仪器的设计框架
设计了仪器的上位机程序;利用单色仪和29.4%的甲烷气体样品和对样机进行测试
实验结果表明:在10~35℃内
仪器波长稳定性小于2 nm
并能够观测到甲烷在1650 nm附近吸光度约为0.01的吸收峰。MEMS技术应用在近红外光谱仪中
对于气体检测是可行的
并且能够使仪器做到便携式。
Abstract
According to the deficiency of traditional NIR spectrometer
a light path of NIR spectrometer by MEMS micro-mirror
overall framework and the computer program are designed.The instrument tested by monochromator and CH4 gas of 29.4 %.The results show that between 10
3
5 ℃
wavelength stability can be reached within 2 nm and an absorption peak of 0.01 absorbency of CH4 near 1 650 nm can also be observed.The MEMS micro-mirror can be applied in the NIR spectrometer for gas detecting