Dataset: Electronic Nose for Quality Control of Colombian Coffee through the Detection of Defects in “Cup Tests”

This dataset is related to the research paper "Electronic Nose for Quality Control of Colombian Coffee through the Detection of Defects in "Cup Tests" published in Sensors (Basel) journal (available online since December 24, 2009, https://www.mdpi.com/1424-8220/10/1/36). Please cite the mentioned article if you found useful information or use the dataset. This dataset comprises time-series recorded by an electronic nose system (E-Nose) for an application of coffee quality control focused on the detection of defects. The database contains 58 measurements of coffee divided into three groups and labeled as high quality (HQ), average quality (AQ), and low quality (LQ). The time series acquired at 1 Hz of sampling frequency during 300 seconds correspond to 300 data points per sensor. Each file in the dataset has eight columns with the resistance readings in kΩ of the eight gas sensors: SP-12A, SP-31, TGS-813, TGS-842, SP-AQ3, TGS-823, ST-31, TGS-800. We organized the database into three folders: AQ_Coffee, HQ_Coffee, LQ_Coffee. Each folder contains text files that correspond to different measurements. The filename identifies the measurement as follows: the first two characters of the filename are an identifier of the quality coffee threshold (AQ: average-quality, HQ: high-quality, LQ: low-quality); and the last two characters indicate the measurement number. For example, file LQ_01 contains the time series recorded when the sample 01 of low-quality coffee was measured.本数据集关联发表于《Sensors (Basel)》期刊的研究论文《用于通过咖啡杯测缺陷检测实现哥伦比亚咖啡质量控制的电子鼻系统》，该论文于2009年12月24日在线发布，链接为https://www.mdpi.com/1424-8220/10/1/36。若您从本数据集获取了有效信息或使用本数据集，请引用上述论文。 本数据集包含由电子鼻系统（electronic nose system, E-Nose）采集的时序数据，应用于咖啡质量控制与缺陷检测任务。该数据库包含58组咖啡测量数据，分为3个类别并标注为高品质（high quality, HQ）、中等品质（average quality, AQ）与低品质（low quality, LQ）。所有时序数据以1 Hz的采样频率采集，单组数据时长300秒，对应每个传感器生成300个数据点。数据集内每个文件包含8列数据，对应8个气体传感器：SP-12A、SP-31、TGS-813、TGS-842、SP-AQ3、TGS-823、ST-31、TGS-800的电阻读数，单位为千欧（kΩ）。 我们将该数据库整理为3个文件夹：AQ_Coffee、HQ_Coffee、LQ_Coffee，每个文件夹内存储对应类别的咖啡测量数据文本文件。 文件名的命名规则如下：文件名前两位字符为咖啡品质类别标识（AQ代表中等品质、HQ代表高品质、LQ代表低品质），最后两位字符为测量序号。例如，文件LQ_01对应低品质咖啡样本01的采集时序数据。