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基于色敏傳感器結合光譜技術的大米儲藏期鑒別
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國家重點研發(fā)計劃項目(2016YFD0401205-3)


Identification of Rice with Different Storage Time Based on Color-sensitive Sensor Array Combined with Visible-near-infrared Spectroscopy
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    摘要:

    應用色敏傳感器陣列(CSA)結合可見/近紅外(Vis-NIR)光譜檢測技術,對大米儲藏時間進行鑒別。大米按不同儲藏期(0、1、2、4、6個月)分為5組。色敏傳感器由氟硼吡咯類色敏材料制成,與大米揮發(fā)性氣體發(fā)生反應后,分別提取色敏材料的光譜數(shù)據(jù)。光譜數(shù)據(jù)經(jīng) SNV算法預處理后,用Si-PLS算法提取3類光譜數(shù)據(jù)的最佳光譜區(qū)間并合成一個數(shù)據(jù)集。分別用遺傳算法(GA)、無信息變量消除法(UVE)和蟻群算法(ACO)提取光譜變量。并結合主成分分析(PCA)和線性判別分析(LDA)進行模式識別。結果表明,用Si-PLS-UVE提取的光譜變量建立的LDA預測模型正確識別率最高。取主成分數(shù)為9時,訓練集正確識別率為98%,校正集正確識別率為96%,為大米儲藏時間的檢測提供了一種可行的方法

    Abstract:

    Rice is gradually aged during transportation and storage, and its degree of aging is an important factor affecting the quality of rice. A color-sensitive sensor array (CSA) combined with visible-near-infrared spectroscopy system was used to identify rice in different storage periods. Rice samples were stored under constant temperature and humidity conditions and divided into five groups according to different storage periods (0 month, 1 month, 2 months, 4 months and 6 months). CSA was made of three boron-dipyrromethene (BODIPY) dyes to capture the volatile organic compounds. After reacting with volatile organic compounds of rice in different storage periods, the spectral data of the color sensitive materials were separately extracted by the detection system. The optimal spectral range of the three types of spectral data was extracted using the Si-PLS algorithm. After the spectral interval data fusion, the characteristic spectral variables were extracted by genetic algorithm (GA), no information variable elimination method (UVE) and ant colony algorithm (ACO), respectively. Pattern recognition was performed by using principal component analysis (PCA) and linear discriminant analysis (LDA). The results showed that the LDA prediction model established by Si-PLS-UVE extracted spectral variables had the highest recognition rate. When the number of PCs was 9, the correct recognition rate of the calibration set and prediction set was 98% and 96%. The research result provided a viable method for detecting rice storage time.

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林顥,王卓,陳全勝,林金金.基于色敏傳感器結合光譜技術的大米儲藏期鑒別[J].農(nóng)業(yè)機械學報,2019,50(6):359-364. LIN Hao, WANG Zhuo, CHEN Quansheng, LIN Jinjin. Identification of Rice with Different Storage Time Based on Color-sensitive Sensor Array Combined with Visible-near-infrared Spectroscopy[J]. Transactions of the Chinese Society for Agricultural Machinery,2019,50(6):359-364.

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  • 收稿日期:2018-12-27
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  • 在線發(fā)布日期: 2019-06-10
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