Method for discriminating middle leaves and upper leaves of flue-cured tobaccos

A discrimination method and technology for flue-cured tobacco, applied in the measurement of color/spectral characteristics, etc., can solve the problems of inability to use automatic sorting of tobacco leaves, and achieve the effects of low detection environment and sample requirements, high accuracy, and simple detection process.

Active Publication Date: 2018-02-09
ZHENGZHOU TOBACCO RES INST OF CNTC
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for distinguishing the middle leaf and the upper leaf of flue-cured tobacco, thereby solving the problem that the existing method cannot be used for automatic sorting of tobacco leaves

Method used

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  • Method for discriminating middle leaves and upper leaves of flue-cured tobaccos
  • Method for discriminating middle leaves and upper leaves of flue-cured tobaccos

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Embodiment

[0024] The method for discriminating between the flue-cured tobacco middle leaf and the upper leaf of the present embodiment comprises the following steps:

[0025] 1) Establish a discriminant model for the difference between the whiteness index of the front and back of the tobacco leaf and the position of the tobacco leaf, as follows:

[0026] Middle part: Y=-1.102–0.248×difference of whiteness index of front and back (1);

[0027] Upper part: Y=-1.277+0.296×difference of whiteness index of front and back (2);

[0028] 2) Use the Color-Eye 7000A spectrophotometer to quantitatively measure the color index of tobacco leaves. Take 10 representative tobacco leaves for each sample to be discriminated, and select 4 measurement points symmetrically from the front and back of each tobacco leaf in the middle of the leaf. Each measurement point is automatically Take the average value after measuring twice, take 20 measured values ​​on the front and back sides of each sample to be disc...

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Abstract

The invention relates to a method for discriminating middle leaves and upper leaves of flue-cured tobaccos. The discriminating method includes a step 1) of establishing a model for discriminating front and back whiteness index differences of the tobaccos and the middle leaves and upper leaves; a step 2) of detecting front whiteness indexes and back whiteness indexes of to-be-discriminated tobaccos, and substituting the front and back whiteness index differences into the discriminating model determined in the step 1), to determine tobacco parts. According to the method for discriminating the middle leaves and the upper leaves of the flue-cured tobaccos, the front and back whiteness index differences of the tobaccos and the tobacco parts have a very strong correlativity. Through a modeling method, appearance difference characteristics of the upper leaves and the middle leaves can be well reflected, and thus the established discriminating model can be utilized to effectively identify thetobacco parts. The front and back whiteness index differences can be detected conveniently through a color photometer, the detection process is simple, the requirements for detection environments andsamples are low, and the method has very good application prospects in the precise evaluation of the tobacco quality and automatic classification of tobacco parts.

Description

technical field [0001] The invention belongs to the evaluation field of tobacco leaves, in particular to a method for distinguishing middle leaves and upper leaves of flue-cured tobacco. Background technique [0002] The part is the main factor for the grouping of the appearance quality of tobacco leaves. The quality characteristics of different parts of tobacco leaves are significantly different, and the cigarette industry enterprises use different parts of tobacco leaves in different ways. Accurately distinguishing tobacco leaf parts is an important work link in the process of tobacco leaf procurement and sorting. [0003] In the national standard GB2635-92 of flue-cured tobacco, the parts of tobacco leaves are divided into lower part, middle part and upper part, and a text description of the shape characteristics of tobacco leaves in each part is proposed from the aspects of vein phase, leaf shape and thickness. However, in the actual production process, due to the vast ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 过伟民张仕祥王建伟张艳玲尹启生王爱国牟文君梁太波郭建华
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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