MEMS近红外光谱仪信号采集系统设计
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摘要
基于MEMS的近红外光谱仪以其较小的体积和便携性能已成为当下研究的热点,然而其光信号采集对噪声的抑制以及同步有很高要求。采用FPGA和ARM作为控制处理器,设计并实现了低噪声信号调理电路,完成光信号的高速同步采集;通过高速USB,与光谱处理器进行数据交互,实现数据高速传输。
MEMS based NIR Spectrometer has become a research focus due to its smaller size and portability.However,the light signal acquisition requires high signal noise suppression and signal synchronization.This paper designs and implements a low-noise circuit based on FPGA and ARM to collect data with high speed.In addition,the data collected are transmitted to spectrum processor by high-speed USB.
MEMS based NIR Spectrometer has become a research focus due to its smaller size and portability.However,the light signal acquisition requires high signal noise suppression and signal synchronization.This paper designs and implements a low-noise circuit based on FPGA and ARM to collect data with high speed.In addition,the data collected are transmitted to spectrum processor by high-speed USB.
引文
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[3]叶坤涛,董太源,贺文熙,等.基于MEMS微镜的长波近红外光谱仪的设计与实现[J].光谱学与光谱分析,2014(10):2858-2862
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[5]Marcal Plans,Joan Simo,Francesc Casanas,et al.Characterization of common beans(Phaseolus vulgaris L.)by infrared spectroscopy:Comparison of MIR,FT-NIR and dispersive NIR using portable and benchtop instruments[J].Food Research International,2013,54(2):1643-1651
[6]陆安江,张正平,白忠臣,等.电热式微机电系统微镜傅里叶变换红外光谱仪[J].红外与激光工程,2016,45(5):0520007-1-0520007-7
[7]文丰,鄢玲玲,李辉景,等.基于FPGA的高精度采集模块设计[J].仪表技术与传感器,2017(8):19-22
[2]Saeed I Latif,Mojtaba Safari,Cyrus Shafai,et al.Development of Adaptive Structures Incorporating MEMS Devices to be Used as Reflect Arrays or Transmit Arrays[J].Microwave and Optical Technology Letters,2014,56(4):935-938
[3]叶坤涛,董太源,贺文熙,等.基于MEMS微镜的长波近红外光谱仪的设计与实现[J].光谱学与光谱分析,2014(10):2858-2862
[4]孙文.一种低噪声大动态范围小型前端电路的研究[D].兰州:中国科学院研究生院(近代物理研究所),2014
[5]Marcal Plans,Joan Simo,Francesc Casanas,et al.Characterization of common beans(Phaseolus vulgaris L.)by infrared spectroscopy:Comparison of MIR,FT-NIR and dispersive NIR using portable and benchtop instruments[J].Food Research International,2013,54(2):1643-1651
[6]陆安江,张正平,白忠臣,等.电热式微机电系统微镜傅里叶变换红外光谱仪[J].红外与激光工程,2016,45(5):0520007-1-0520007-7
[7]文丰,鄢玲玲,李辉景,等.基于FPGA的高精度采集模块设计[J].仪表技术与传感器,2017(8):19-22