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《Opto-Electronic Engineering》 2010-01
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Development of Tea Component Analyzer Based on NIR Spectrometry

L Jin1,2,SHI Yang2,LIU Hui-jun3,ZHAO Xin-xiang3,ZHUANG Song-lin1 ( 1. School of Optical-Electronical & Computer Eng.,University of Shanghai for Sci. and Tech,Shanghai 200093,China; 2. College of Automation & Electronic Engineering,Zhejiang University of Sci. and Tech,Hangzhou 310023,China; 3. College of Metrology Technology & Engineering,China Jiliang University,Hangzhou 310018,China )  
Design and realization of tea component analyzer is presented based on Near-infrared (NIR) spectrometry. The discrete interference filters are used as NIR diffuse reflectance part. A white board is embedded into the rotatable sample cell. The samples and the white board are scanned in a fast and alternative way,which tests sample and the white board simultaneously,effectively simplifying the mechanism and accelerating the sample detection as well as improving the accuracy. InGaAs Detector,instrumental amplifiers and 24-bit A/D converters are used in photoelectric signal processing system. The computer completes the value determination of absorbency and tea component analysis with the data transferred from USB 2.0 interface. The relative error between this instrument and conventional chemical analysis is less than 5% by the experiments result.
【Fund】: 浙江省重点科技计划项目(2006C2144)
【CateGory Index】: TP216
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