纺织学报 ›› 2017, Vol. 38 ›› Issue (07): 90-94.doi: 10.13475/j.fzxb.20161003405

• 染整与化学品 • 上一篇    下一篇

光谱优化处理结合多层次支持向量机的混合染液浓度检测方法

  

  • 收稿日期:2016-10-14 修回日期:2017-03-31 出版日期:2017-07-15 发布日期:2017-07-18

Method of mixed dye liquor concentration detection based on spectral optimization and Multi-level support vector machine

  • Received:2016-10-14 Revised:2017-03-31 Online:2017-07-15 Published:2017-07-18

摘要:

为提高印染生产过程中多组分混合染液浓度的检测精度,提出一种利用吸收光谱对三组分染液浓度进行同时测定的方法。利用波长范围在339.22~1 000 nm的微型光纤光谱仪,采集多组分混合染液的吸收光谱数据;采用Savitzky-Golay (SG) 卷积平滑法对原始有效吸收光谱数据进行平滑去噪;利用基于X-Y距离结合的样本划分方法 (SPXY) 法将80种混合染液划分成75个训练组和5个测试组;使用连续投影算法筛选出染液光谱的最佳特征波长数为22;采用多层次多支持向量机子集结构实现多组分混合染液浓度的同时检测。结果表明,三组分混合染液浓度检测的相对误差可控制在10%以内,同时分类模型的训练时间和预测时间缩短近一半,为后期实现多组分混合染液在线浓度检测提供了参考。

关键词: 连续投影算法, 多层次支持向量机, 特征波长, 多组分染液, 浓度检测

Abstract:

In order to improve the detection accuracy of multi-components mixed dye liquor concentration during printing & dyeing process, a method was proposed for simultaneous determination of three components dye liquor concentration by absorption spectroscopy. The absorption spectra of the multi-components mixed dye liquor was collected by USB2000+ microfiber spectrometer with wavelength range of 339.22~1 000 nm. The original effective absorption spectra were smoothed by Savitzky-Golay (SG) convolution smoothing. 80 mixed dye liquors were divided into 75 training groups and 5 test groups according to sample set partitioning on joint X-Y distance (SPXY) method. The optimal characteristic wavelengths of the successive projections algorithm are 22. The multi-component concentration of the dye solution was detected by using the multi-level multi support vector machine model. The experimental results show that the relative error of the three-components mixed dye liquor concentration can be controlled within 10%, and the training time and prediction time of the classification model are shortened by about a half, which provides a reference to realiae on-line concentration detection of multi-component dye in the later stage.

Key words: successive profections algorithm, multi-level support vector, characteristec wavelength, multi-component dye solution, concentration detection

[1] 李佳平 沈国康 欧耀明 孟想 辛斌杰. 应用连续投影算法及最小二乘支持向量机的单组分纺织品识别[J]. 纺织学报, 2018, 39(08): 46-51.
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