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当前位置: 首页 > 文章 > 西湖龙井茶品质的智能嗅觉识别 农业机械学报 2012,43 (12) 130-135
Position: Home > Articles > Quality Recognition of Xihu Longjing Tea Based on Intelligent Olfactory Transactions of the Chinese Society for Agricultural Machinery 2012,43 (12) 130-135

西湖龙井茶品质的智能嗅觉识别

作  者：
史波林;赵镭;支瑞聪;席兴军;朱大洲
单  位：
国家农业智能装备工程技术研究中心;中国标准化研究院食品与农业标准化研究所
关键词：
西湖龙井茶;电子鼻;智能嗅觉;特征识别
摘  要：
通过电子鼻采集不同等级、树种和产地西湖龙井茶的智能嗅觉指纹图谱,利用主成分分析得分矩阵研究等级、树种和产地指纹信息对茶叶品质的影响程度,基于软独立模型分类分析方法建立茶叶等级、树种和产地的3类智能嗅觉判别模型。结果表明,不同等级西湖龙井茶的电子鼻信号差异最大;在涵盖不同树种和产地信息的样品中,电子鼻能准确预测品质相近的高档等级(精品、特级和一级)茶叶,等级判别正确率基本达到100%。树种与产地特征对于茶叶品质的影响程度比较接近,并且同一等级、同一产地下不同树种模型和同一等级、同一树种下不同产地模型的判别正确率基本都达到92%以上。在此基础上,提出了首先利用电子鼻进行等级划分,然后在同一等级下进行树种鉴定和产地判别的西湖龙井茶品质智能嗅觉快速检测策略。
译  名：
Quality Recognition of Xihu Longjing Tea Based on Intelligent Olfactory
作  者：
Shi Bolin1 Zhao Lei1 Zhi Ruicong1 Xi Xingjun1 Zhu Dazhou2(1.Food and Agriculture Standardization Institute,China National Institute of Standardization,Beijing 100088,China 2.National Research Center of Intelligent Equipment for Agriculture,Beijing 100097,China)
关键词：
Xihu Longjing tea,Electronic nose,Intelligent olfactory,Characteristics recognition
摘  要：
The intelligent olfactory spectrograms of Xihu Longjing tea were collected by electronic nose.The spectrograms scores matrix that obtained by principal component analysis was applied.The influence of the information from grading,tree varieties and producing areas on quality of tea was analyzed.The soft independent modeling of class analogy was used to establish three kinds of models for grading,tree varieties and producing areas,respectively.Results showed that the intelligent olfactory spectrograms from different grading tea had the most difference than the other two elements.The grading discrimination model had well performance with about 100% correct rate to predict top grade teas.Meanwhile,the influences of tree varieties and location on the tea quality were seemed to be similar.Under the same grade and same producing area,the tree varieties discrimination model of tea was built.Also,the producing area discrimination model of tea was built.The correct rates of the two models were all over 92%.On the basis of above study,the quick detection strategy of Xihu Longjing tea by intelligent olfactory technology was presented,that is,grading demarcation,tree varieties identification and producing area distinguishing under the same grading were carried out in turn.

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