Tobacco shred blending uniformity determination method based on combination of chromatic value and entropy weight method

Abstract

The invention relates to a tobacco shred blending uniformity determination method based on combination of a chromatic value and an entropy weight method. Chromaticity values L *, a * and b * of the formula tobacco shreds taken at different time points are measured by adopting a color difference meter, variable coefficients of three chromaticity values of an evaluation sample are calculated, then each chromaticity value is weighted by using an entropy weight method to obtain a comprehensive variable coefficient of the three chromaticity values of the evaluation sample, finally a method for calculating the tobacco shred blending uniformity is established according to the comprehensive variable coefficient of the chromaticity values, and the test result of the method is compared with an industrial standard method. The result shows that the variable coefficient of the precision test for determining the tobacco shred blending uniformity by combining the chromaticity value with the entropy weight method and the variable coefficient of the repeatability test meet the requirements of quantitative analysis. Compared with an industrial standard method, the method has the advantages that thedetermination result of the tobacco shred blending uniformity has no significant difference, and the variable coefficient of the test result is smaller. The method has the advantages of simple operation, no chemical addition, high precision and good repeatability, and is suitable for accurate determination of the tobacco shred blending uniformity.

Description

technical field [0001] The invention belongs to the technical field of cigarette production monitoring, in particular to a method for measuring the blending uniformity of shredded tobacco based on chromaticity value and entropy weight method. Background technique [0002] The finished shredded tobacco of cigarettes is generally composed of shredded leaves, shredded stems and shredded reconstituted tobacco leaves, and shredded tobacco leaves are made from tobacco leaves from different production areas, varieties, parts and grades. The physical and chemical properties and colors of shredded leaves, shredded stems, and shredded reconstituted tobacco leaves are quite different. Similarly, the internal chemical composition and color of shredded tobacco leaves made from different production areas, varieties, parts and grades are also relatively different. big difference. Therefore, the blending uniformity of different components in finished shredded tobacco directly affects the i...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for measuring the blending uniformity of shredded tobacco based on the chromaticity value combined with the entropy weight method, so as to solve the problem that the detection standards and detection methods in the prior art have high requirements for instruments and equipment, various detection indicators, and cumbersome operations. Or problems that involve a variety of chemical reagents, or data processing is complex and require the establishment of a recognition model

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