CN103954236B - A kind of assay method of slice cigarette shape degree of compacting - Google Patents
A kind of assay method of slice cigarette shape degree of compacting Download PDFInfo
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- CN103954236B CN103954236B CN201410206871.9A CN201410206871A CN103954236B CN 103954236 B CN103954236 B CN 103954236B CN 201410206871 A CN201410206871 A CN 201410206871A CN 103954236 B CN103954236 B CN 103954236B
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Abstract
The assay method of a kind of cigarette shape degree of compacting, comprises the steps: that 1. sample take no less than 1kg complete structure sheet cigarette as detection sample；2. breadload cigarette image；3. degree of compacting calculates: by binary image processing method, measures area and the girth of every Nicotiana tabacum L., calculates the number of degrees value of compacting of every blade cigarette；4. frequency calculates: divide some intervals (interval is designated as x) in sample degree of compacting distribution, calculates the sheet cigarette number percentage ratio y in each interval, i.e. frequency；5. distribution equation matching: according to interval x and corresponding frequency y, use least square fitting degree of compacting feature distribution equation, it is thus achieved that its design parameter value A being distributed,With, and then obtain averagely degree of compacting and degree of the compacting distributing homogeneity of sheet cigarette shape.The invention provides a kind of assay method describing the distribution of sheet cigarette global shape degree of compacting, be used for characterizing sheet cigarette sample entirety degree of compacting size and uniformity thereof, compensate for the blank of current sheet cigarette process for measuring shape.
Description
Technical field
The present invention relates to the assay method of a kind of cigarette shape degree of compacting, belong to technical field of tobacco processing.
Background technology
The two dimensional character of sheet cigarette includes shape, size, color, texture, illumination etc., and wherein shapes and sizes are that industry is raw
During product, very important two kinds of features, play very important effect to Cigarette processing.
The sign of sheet cigarette size mainly has two kinds of methods: tobacco strip structure and sheet cigarette area.The mensuration of tobacco strip structure is mainly
The method utilizing screening makes various sizes of cigarette separate, and result accounts for gross mass with the mass accumulation on each layer or certain layer of screen cloth
Ratio represents the (mensuration of GB/T 21137-2007 Tobacco Leaves cigarette size；ISO/DIS 12194 Leaf tobacco-
Determination of strip particle size).The test philosophy of sieve method is the screen cloth utilizing different size, will
The material of certain mass separates according to the difference of size, and result is total with the quality of material on each layer screen cloth and taken sample
Mass ratio represents.Sheet cigarette vibrating separating sieve for tobacco strip structure detection is designed by Imperial Tobacco Group the earliest, with
After be used widely in each big tobacco enterprise.The mensuration of sheet cigarette area mainly uses image collecting device to obtain discrete patch
Cigarette digital picture, by image processing and analysis, calculate tested cigarette area (YC/T 449-2012 Tobacco Leaves cigarette size and
The mensuration blade face area method of distribution)." tobacco threshing and redrying technological specification " (YC/T146-2010) only structure to sheet cigarette at present
Having clear and definite index request, and its shape is not done requirement, its main cause is not have existing method, and current sheet cigarette shape is special
The research levying aspect is still in the starting stage.
The geometry description indexes that granule is conventional has degree of compacting, rectangular degree, flexibility, eccentricity etc..Wherein, compact
Degree be girth square with the ratio of area, for describing the compactness of shape, degree of compacting is the biggest, shows the shape of granule
The most complicated, compactedness is the poorest, and compact most in Euclidean space is round.Production experience shows, after the sheet cigarette of compact shape is cut
Making of tobacco shred is broken less, the loss in the formation of the most broken silk and minimizing Primary Processing.
Owing to sheet cigarette is to be made at random by threshing machine group to form, different, it is impossible to use the blade of indivedual or minority
Degree of compacting weighs the shape of a large amount of sheet cigarettes by the gross, but can its global shape characteristic meets certain distribution, provide one to retouch
State the assay method of sheet cigarette global shape degree of compacting distribution, be used for characterizing sheet cigarette sample entirety degree of compacting size and uniformity thereof,
Cause the concern of relevant insider.Show that shape degree of compacting meets according to mass data statistical resultDistribution, can characterize, with relevant parameter in equation, the shape facility that sheet cigarette is overall.
Summary of the invention
The purpose of the present invention is based on above-mentioned condition and provides a kind of in order to characterize the distribution of sheet cigarette global shape degree of compacting
Assay method, utilize this assay method can sheet cigarette sample entirety degree of compacting size and uniformity thereof be characterized, compensate for
The blank of sheet cigarette process for measuring shape at present.
It is an object of the invention to be achieved by the following technical programs:
The assay method of a kind of cigarette shape degree of compacting, comprises the steps:
(1) sample: take in position to be detected no less than 1kg complete structure sheet cigarette as detection sample；
(2) breadload cigarette image: utilize image collecting device to obtain every blade cigarette image in sample；
(3) degree of compacting calculates: by binary image processing method, processes the image obtained, measures every cigarette
The area of leaf and girth, calculate the number of degrees value of compacting of every blade cigarette；
(4) frequency calculates: divide some intervals (interval is designated as x) in sample degree of compacting distribution, in statistics sample
The total number of sheet cigarette and the sheet cigarette number being distributed in each interval, the sheet cigarette number percentage ratio calculated in each interval (is designated as
Y), i.e. frequency；
(5) distribution equation matching: according to interval x and corresponding frequency y, use the distribution of least square fitting degree of compacting feature
Equation, it is thus achieved that its design parameter value A being distributed,With.Wherein,Characterize sheet cigarette sample overall
The averagely degree of compacting of shape,Characterize the intensity of sheet cigarette sample degree of compacting distribution, i.e. uniformity coefficient, A is equation parameter.
In step (1), at the sampling after described position to be detected refers to beat leaf or after loosening and gaining moisture.
Distribution equation matching in step (5) is to use computer or artificial calculation completes.
The beneficial effects of the present invention is: a kind of assay method describing the distribution of sheet cigarette global shape degree of compacting is provided, uses
In characterizing sheet cigarette sample entirety degree of compacting size and uniformity thereof, make up the blank of current sheet cigarette process for measuring shape.
Accompanying drawing explanation
Fig. 1 is degree of compacting feature distribution equation fitting result.
Specific embodiments
Below in conjunction with embodiment, the present invention will be further described:
1, sample: collect belt in threshing machine group and take 1kg complete structure blade as detection sample；
2, breadload cigarette image: utilize sheet cigarette size and distribution detecting device thereof to gather the digitized map of every blade cigarette in sample
Picture；
3, image processing and analysis: processed the image obtained by sheet cigarette Two-dimensional morphology on-line checking software, is surveyed
The degrees of data of compacting of fixed every Nicotiana tabacum L.；
4, frequency calculates: will degree of compacting by 5,6,7,9,11,13,16,20,25,30,35,45,55,65,80,100,
120,150,180 demarcation interval, calculates the sheet cigarette number percentage ratio in each interval, the results are shown in Table 1
Table 1 sample degree of compacting interval frequency
5, distribution equation matching: according to x, y, matching degree of compacting feature distribution equation(see figure
1), it is thus achieved that design parameter value, wherein, A equal to 34.8,Equal to 0.508 HeEqual to 24.50, i.e. this sample average degree of compacting is
24.5, uniformity coefficient is 0.508.
Claims (2)
1. the assay method of a sheet cigarette shape degree of compacting, it is characterised in that: comprise the steps:
(1) sample: take in position to be detected no less than 1kg complete structure sheet cigarette as detection sample；
(2) breadload cigarette image: utilize image collecting device to obtain every blade cigarette image in sample；
(3) degree of compacting calculates: by binary image processing method, processes the image obtained, measures every Nicotiana tabacum L.
Area and girth, calculate the number of degrees value of compacting of every blade cigarette；Described degree of compacting be girth square with the ratio of area；
(4) frequency calculates: divide some intervals in sample degree of compacting distribution, and interval is designated as x, and in statistics sample, sheet cigarette is total
Number and the sheet cigarette number that is distributed in each interval, the sheet cigarette number percentage ratio calculated in each interval is designated as y, i.e. frequency
Number；
(5) distribution equation matching: according to interval x and corresponding frequency y, use least square fitting degree of compacting feature distribution equation, it is thus achieved that its design parameter value A being distributed,With；Wherein,Characterize sheet cigarette sample entirety shape
The averagely degree of compacting of shape,Characterize the intensity of sheet cigarette sample degree of compacting distribution, i.e. uniformity coefficient, A is equation parameter.
The assay method of the most according to claim 1 cigarette shape degree of compacting, it is characterised in that: in step (1), described
At sampling after position to be detected refers to beat leaf or after loosening and gaining moisture.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770303B (en) * | 2017-03-31 | 2020-07-28 | 河南农业大学 | Image analysis-based cigarette cut tobacco structure characterization method |
| CN107423755B (en) * | 2017-07-03 | 2020-06-16 | 云南中烟工业有限责任公司 | Method for describing and classifying tobacco flakes based on morphological characteristics of tobacco flakes |
| CN107330467B (en) * | 2017-07-03 | 2020-07-21 | 云南昆船设计研究院有限公司 | Method for predicting influence of morphological characteristics of tobacco flakes on tobacco shred structure |
| CN110889839B (en) * | 2019-11-27 | 2022-11-25 | 贵州中烟工业有限责任公司 | Characterization method and system for threshing and redrying tobacco flake |
| CN115953384B (en) * | 2023-01-10 | 2024-02-02 | 杭州首域万物互联科技有限公司 | Online detection and prediction method for morphological parameters of tobacco leaves |
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