Near-infrared spectroscopy method for identifying pure wool product

Abstract

The invention relates to a near-infrared spectroscopy method for identifying a pure wool product, and belongs to the technical field of analysis and test. The method comprises the following steps: (1)optimizing the acquisition process of the near-infrared spectrum based on an integrating sphere diffuse reflection mode; (2) collecting a representative wool product; (3) acquiring a background spectrum and the near-infrared spectrum of the sample, and performing variable standardization preprocessing on the spectra; (4) reasonably segmenting a sample set into a training set, a validation set anda test set; (5) screening an optimal variable by adopting a continuous projection algorithm-linear discriminant analysis algorithm, and establishing an identification model; and (6) acquiring the near-infrared spectrum of an unknown sample, and obtaining the recognition result by means of the established model. An integrating sphere is adopted to measure the diffuse reflection spectrum, diffuse reflection light is light generated after the interaction with the internal molecules of the sample, and the signal light undergoes space integration by an integrating sphere to effectively overcome the influences of random factors in the diffuse reflection measurement, so the stability and the repeatability of the data are greatly improved.

Description

technical field [0001] The invention relates to a near-infrared spectrum method for identifying pure wool products, belonging to the technical field of analysis and testing. technical background [0002] Clothing and other textiles are closely related to people's lives. With the development of society and the improvement of living standards, people pay more and more attention to the practicality, aesthetics, comfort and safety of textiles, which are closely related to the fiber composition of textiles. Textile processing factories often mix several materials with different properties to make the finished product have certain characteristics, such as mixing polyester fiber technology in cotton to increase the durability of the finished product and make the fabric easier to preserve. National mandatory standards require that the three items of textile size or specification, fiber composition and content, and maintenance methods must be in the form of durable labels. Fiber con...

AI Technical Summary

Problems solved by technology

These methods have shortcomings such as long detection time, use of chemical reagents, high requirements for operators, and destructiveness.

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