Cut tobacco processing resistance detection and characterization method based on image method

Abstract

The invention discloses a cut tobacco processing resistance detection and characterization method based on an image method. Cut tobacco number average length is determined with a machine vision method, the method can be applied to cut tobacco processing resistance detection characterization in pneumatic conveying and roller drying processes of cut tobacco respectively, and processing resistance ofthe cut tobacco is characterized by change of number average lengths before and after the pneumatic conveying and roller drying processes of the cut tobacco. The method has the advantages as follows:a) the provided characterization method can directly reflect the degree of the processing resistance of the cut tobacco; b) the manner for determining the feature sizes of the cut tobacco with an image method is efficient, convenient and accurate. The cut tobacco processing resistance characterization method is convenient in calculation and can reflect breaking degree of the cut tobacco after thepneumatic conveying and roller processing processes more clearly so as to reflect the processing resistance of the cut tobacco; the ratio S of number average lengths of the cut tobacco before and after processes is used for representing the processing resistance of the cut tobacco, the closer to 1 the S is, the smaller the breaking degree of the processed cut tobacco is and the higher the processing resistance of the cut tobacco is. Similarly, the smaller than 1 the S is, the poorer the processing resistance of the cut tobacco is.

Description

technical field [0001] The invention belongs to the field of tobacco processing, and in particular relates to an image-based method for detecting and characterizing the processing resistance of shredded tobacco. Background technique [0002] Shredded tobacco is the main component of cigarettes. The processing of shredded tobacco for finished cigarettes mainly includes steps such as shredding, screening, heating and humidifying, drying shredded leaves, blending shredded shreds and matching shreds. In the production and processing of tobacco products, the size distribution of shredded tobacco is the focus of the physical quality control of in-process products in the cigarette process. Shredded tobacco is crushed to varying degrees during the processing process, and shredded tobacco directly affects the structure of shredded tobacco and thus affects the physical quality of cigarettes, such as It causes the amount of shredded wire at the end and the increase of the short rate ("...

AI Technical Summary

Problems solved by technology

However, there are some problems in the method of reflecting the processing resistance of shredded tobacco by using the change rate of shredded ratio: first, the degree of fragmentation of shredded tobacco with large differences in shredded tobacco structure cannot be expressed by the change of shredded shredded ratio; The operation process is greatly affected by human factors; the third is that sampling is difficult, which affects the tobacco processing process

At present, no one has used machine vision to quickly and conveniently measure the morphological changes and characteristic dimensions of the same batch of shredded tobacco before and after processing, and then judge the processing resistance of shredded tobacco

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