Development of a Nondestructive Moldy Coffee Beans Detection System Based on Electronic Nose

被引:5
|
作者
Tang, Chang-Lin [1 ]
Chou, Ting-, I [1 ]
Yang, Sang-Ren [2 ]
Lin, Yi-Jhen [1 ]
Ye, Zhong-Kai [1 ]
Chiu, Shih-Wen [1 ]
Lee, Sheng-Wei [2 ]
Tang, Kea-Tiong [1 ]
机构
[1] Natl Tsing Hua Univ, Dept Elect Engn, Hsinchu 30013, Taiwan
[2] Natl Cent Univ, Inst Mat Sci & Engn, 320317, Taoyuan City, Taiwan
关键词
Sensors; Sensor arrays; Temperature sensors; Gas detectors; Classification algorithms; Sensor systems; Green products; Sensor applications; classification algorithm; coffee beans; dimensionality reduction algorithm; electronic nose (E-nose) system; mold degree; sensor application; FOOD; QUALITY;
D O I
10.1109/LSENS.2023.3241943
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Coffee drinks prepared from moldy coffee beans can adversely affect human health. No convenient screening method for detecting the smell of stale coffee beans exists. Accordingly, this study developed an electronic nose (E-nose) system for detecting the smell of coffee beans. This system comprises an environmental control system, a sensor array, and a data signal readout system. The system can distinguish various degrees of mold on coffee beans through the recognition of the smell of the coffee beans. In this study, we established a standard operating procedure to collect gas samples from coffee beans in a temperature- and humidity-controlled environment and recorded changes in the signals by using the sensor array after introducing the target gas. Features were first extracted from the collected data, then dimensionality reduction methods, such as principal component analysis and linear discriminant analysis, were applied to these features. Thus, their complexity was reduced, and the noise was eliminated. K-nearest neighbor and support vector machine were adopted as classification algorithms, and the classification accuracy of the proposed system reached 91.77%.
引用
收藏
页数:4
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