CN101968346B - Method for characterizing lamina structure of tobacco leaf - Google Patents
Method for characterizing lamina structure of tobacco leaf Download PDFInfo
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- CN101968346B CN101968346B CN2010102959768A CN201010295976A CN101968346B CN 101968346 B CN101968346 B CN 101968346B CN 2010102959768 A CN2010102959768 A CN 2010102959768A CN 201010295976 A CN201010295976 A CN 201010295976A CN 101968346 B CN101968346 B CN 101968346B
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Abstract
The invention relates to a method for characterizing the lamina structure of a tobacco leaf. The method is characterized by comprising the following steps of: (1) sampling; (2) dispersing and paving materials; (3) collecting a lamia image; (4) measuring a lamina area; (5) calculating the area percentage of intervals; (6) calculating the accumulative area percentage; (7) fitting a distribution equation; (8) calculating a characteristic area; and (9) acquiring the lamina content of the intervals of any areas. The method has the advantages that: the distribution of lamina size is described by using the continuous distribution equation, the uniformity of the distribution of the lamina size and the integral size of the lamina are characterized by utilizing a uniformity coefficient b and the characteristic area x0.5, and simultaneously, the lamina content of the intervals of any areas can be acquired by the distribution equation of the lamina. The method overcomes the defects of the conventional method, and characterizes the structural distribution condition of the lamina comprehensively.
Description
Technical field
The invention belongs to technical field of tobacco processing, be specifically related to a kind of method---characterizing method of tobacco leaf structure that is used to measure blade size and distribution thereof.
Background technology
The tobacco leaf structure is to weigh the important indicator of beating leaf quality; Also be the principal element that influences tobacco structure simultaneously, and the latter is the key factor of decision rolled cigarette quality such as individual cigarette weight, density of tobacco rod, end tobacco-falling quantity, nominal rate and quality stability of rolled.At present the mensuration of blade construction mainly is to utilize the method for screening that the blade of different size is separated, and the result representes with the ratio that the mass accumulation on each layer or certain layer of screen cloth accounts for gross mass.On the one hand,, in the process of screening, be easy to generate " ultra sieve ", " leaking sieve " and phenomenons such as " sieve clingings " because blade is flexible irregular schistose texture, make the result cause very big error.On the other hand, because the restriction of the screen cloth number of plies, this characterizing method has only shown that discrete blade dimensions distributes, and can't describe the continuous distribution situation and the homogeneity of different interval intra vane sizes exactly.C.A.Wood and W.S.Cox point out that even have same result after the screening of different blades, the shared mass percent of each size blade still possibly be different.P.Funke etc. also think, have identical more than 1/2 inch the blade of number percent possibly produce the pipe tobacco of completely different structure distribution, homogeneity and its size that blade distributes equally all are important index.Chinese patent " tobacco strip structure on-line measuring device and detection method thereof " has been introduced a kind of device that utilizes image method to detect blade area in (CN101650316A); But its sign to tobacco strip structure still adopts existing method; Promptly by computation interval number percent between limited area, therefore same existence is to the limitation of tobacco strip structure sign.
Understand blade construction situation (comprising blade size distribution, homogeneity and whole size) for comprehensive carefully; Be necessary to set up a kind of can science, accurately characterize the method for blade size distribution, homogeneity and whole size, overcome existing method and adopt limited screen cloth blade mass percent to characterize the deficiency of blade construction.
Summary of the invention
The object of the invention provides the characterizing method of a kind of blade size distribution, homogeneity and whole size just for these reasons, describes the blade construction situation comprehensively.
The objective of the invention is to be achieved through following technical scheme:
The characterizing method of tobacco leaf structure of the present invention comprises the steps:
(1) sample sampling: get a certain amount of complete structure blade as test sample in position to be detected;
(2) disperse stone: sample is placed on the laying device,, make between blade and the blade and disperse fully through multistage acceleration stone;
(3) gather leaf image: utilize the leaf image after image collecting device obtains dispersion;
(4) measure blade area: on the computing machine that connects camera, the image that obtains is handled in real time, measured the area of every tobacco leaf through the blade area analysis software;
(5) computation interval area percentage: the blade area that obtains is divided according to several blade area intervals, calculate each interval interior blade area sum, convert its shared number percent of surveying the blade total area again into;
(6) calculating cumulative area percentage: interval area percentage is calculated the accumulation area percentage less than this boundary by being limited to boundary on the interval;
(7) match distribution equation: through discovering beat leaf after, different places of production different brackets blade size distribution after the redrying, after the moisture regain all meets
Equation form, wherein
xBe the accumulation area upper limit,
F (x)Be its corresponding accumulation area percentage,
A, bBe equation parameter, (6) gained accumulation area percentage carried out match by this equation form obtain parameter
A, bValue, thereby to detect the concrete distribution equation of leaf sample, verified match gained parameter
bBe the uniformity coefficient of blade, can characterize the homogeneity of blade size, this value is big more, and blade area distributes narrow more, and its homogeneity is good more;
(8) calculated characteristics area: will
F (x)=0.5 (be area greater than with less than
xBlade respectively account for 50%) bring concrete distribution equation into, calculate
xValue, note is made the characteristic area
x 0.5, this value can characterize the whole size of blade, and its value is big more, and to survey the entire area of blade also just big more;
(9) the big minizone of arbitrary area blade content: the method for existing tobacco strip structure is to adopt the interval shared degree of blade of fixed size to characterize, the present invention can obtain through the distribution equation of blade the big minizone of arbitrary area (
x 1,
x 2) shared number percent, promptly
F (x 2 )-F (x 1 )
Technique effect of the present invention is embodied in: the present invention describes the blade size distribution with continuous distribution equation, and utilizes uniformity coefficient
bWith the characteristic area
x 0.5Characterize the homogeneity of blade size distribution and the whole size of blade; Can obtain the blade content of the big minizone of arbitrary area simultaneously easily through the distribution equation of blade; The present invention has not only overcome the deficiency of existing method, and has more comprehensively characterized the structure distribution situation of blade.
Description of drawings
Accompanying drawing is that the used stone of the present invention disperses and leaf image acquisition system structural representation.
Among the figure: 1, limit material roller, 2, the one-level belt, 3, second belt, 4, three grades of belts, 5, the level Four belt, 6, feed belt, 7, the CCD camera.
Embodiment
The present invention accurately measures the area of institute's each sheet blade of sample thief through image method; And it is segmented by the big minizone of certain area; The calculating cumulative area percentage; Obtain the concrete distribution equation of pilot blade by the form match of blade distribution equation, obtain to characterize its inhomogeneity uniformity coefficient according to the concrete distribution equation of blade
bWith the characteristic area that characterizes its whole size
x 0.5, can also obtain simultaneously the big minizone of arbitrary area (
x 1,
x 2) shared number percent, promptly
F (x 2 )-F (x 1 )
Below in conjunction with embodiment the present invention is further specified.
Embodiment:
(1) sample sampling: the present invention is respectively after beating leaf, take a sample to the different places of production, different brackets blade after the redrying with behind the loosening and gaining moisture; Totally 14 samples; As shown in table 1; Each sample volume is 3.0kg, in order to guarantee the integrality of blade construction, accesses blade on the whole cross section of feed belt as specimen.
(2) disperse stone: in order to reach desirable dispersion effect; Blade is separated fully, and the present invention adopts the mode of multistage dispersion stone, and device therefor is as shown in the figure: comprise that multi-stage, belt transmits laying device and image collecting device; Getting leaf sample is positioned over one-level belt 2; The flow of blade is through the control of limit material roller 1, and two, three, level Four belt 3,4,5 stepwise speed accelerate, blade pass is crossed the dispersion of being made thinner gradually of level Four belt.
(3) gather leaf image: fall on the feed belt 6 of image capturing system as shown in the figure through multistage scattered blade after, be sent to CCD camera 7 belows and begin to take pictures, gather the image of blade.
(4) measure blade area: utilize the blade area analysis software that each frame picture of gathering is handled, calculate the area of each sheet blade.
(5) computation interval area percentage: with the leaf area that records by 0-1.5 cm
2, 1.5-3 cm
2, 3-5 cm
2, 5-10 cm
2, 10-15 cm
2, 15-20 cm
2, 20-25 cm
2, 25-30 cm
2, 30-35 cm
2, 35-40 cm
2, 40-45 cm
2, 45-50 cm
2, 50-55 cm
2, 55-60 cm
2,＞60 cm
2Be divided into 15 intervals, calculate each interval range intravane area with, convert the number percent of the shared total area again into, as shown in table 1.
(6) calculating cumulative area percentage: the interval area percentage of gained is calculated in (5) convert into≤1.5 cm
2,≤3 cm
2,≤5 cm
2,≤10 cm
2,≤15 cm
2,≤20 cm
2,≤25 cm
2,≤30 cm
2,≤35 cm
2,≤40 cm
2,≤45 cm
2,≤50 cm
2,≤55 cm
2,≤60 cm
2Totally 14 cumulative area number percents are as shown in table 2.
(7) match distribution equation, calculated characteristics area: to be limited on the cumulative area
x, corresponding cumulative area number percent does
F (x), the match distribution equation
, obtain the concrete distribution equation of every kind of sample, match gained parameter
bBe uniformity coefficient, result of calculation is seen table 3.
(8) will
F (x)=0.5 brings the concrete distribution equation of every kind of sample into, calculates characteristic area separately
x 0.5Result of calculation is seen table 3.
The big minizone of arbitrary area blade content: can obtain the big minizone of arbitrary area through the distribution equation of blade like (2,8) shared number percent, promptly
F (8
)-F (2
), result of calculation is seen table 3.
Claims (1)
1. the characterizing method of a tobacco leaf structure is characterized in that: comprise the steps:
(1) sample sampling: get a certain amount of complete structure blade as test sample in position to be detected;
(2) disperse stone: sample is placed on the laying device,, make between blade and the blade and disperse fully through multistage acceleration stone;
(3) gather leaf image: utilize the leaf image after image collecting device obtains dispersion;
(4) measure blade area: on the computing machine that connects camera, the image that obtains is handled in real time, measured the area of every tobacco leaf through the blade area analysis software;
(5) computation interval area percentage: the blade area that obtains is divided according to several blade area intervals, calculate each interval interior blade area sum, convert its shared number percent of surveying the blade total area again into;
(6) calculating cumulative area percentage: interval area percentage is calculated the accumulation area percentage less than this boundary by being limited to boundary on the interval;
(7) match distribution equation: through discovering beat leaf after, different places of production different brackets blade size distribution after the redrying, after the moisture regain all meets
Equation form, wherein
xBe the accumulation area upper limit,
F (x)Be its corresponding accumulation area percentage,
A, bBe equation parameter, (6) gained accumulation area percentage carried out match by this equation form obtain parameter
A, bValue, thereby to detect the concrete distribution equation of leaf sample, verified match gained parameter
bBe the uniformity coefficient of blade, can characterize the homogeneity of blade size, this value is big more, and blade area distributes narrow more, and its homogeneity is good more;
(8) calculated characteristics area: will
F (x)=0.5 be area greater than with less than
xBlade respectively account for 50%, bring concrete distribution equation into, calculate
xValue, note is made the characteristic area
x 0.5, this value can characterize the whole size of blade, and its value is big more, and to survey the entire area of blade also just big more;
(9) the big minizone of arbitrary area blade content: the method for existing tobacco strip structure is to adopt the interval shared degree of blade of fixed size to characterize, the characterizing method of tobacco leaf structure can obtain through the distribution equation of blade the big minizone of arbitrary area (
x 1,
x 2) shared number percent, promptly
F (x 2 )-F (x 1 )
。
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| CN2010102959768A CN101968346B (en) | 2010-09-29 | 2010-09-29 | Method for characterizing lamina structure of tobacco leaf |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102959768A CN101968346B (en) | 2010-09-29 | 2010-09-29 | Method for characterizing lamina structure of tobacco leaf |
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| Publication Number | Publication Date |
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| CN101968346A CN101968346A (en) | 2011-02-09 |
| CN101968346B true CN101968346B (en) | 2012-02-01 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359962B (en) * | 2011-07-14 | 2013-11-20 | 红塔烟草(集团)有限责任公司 | Equipment for determining long tobacco stalk rate by using image analysis |
| CN102628813B (en) * | 2012-03-30 | 2013-11-20 | 中国烟草总公司郑州烟草研究院 | Measuring and representing method of slice tobacco raw material filamentation structure |
| CN102914620A (en) * | 2012-10-16 | 2013-02-06 | 红塔烟草(集团)有限责任公司 | Determination method for ration of reconstituted tobacco finished product |
| CN103175835B (en) * | 2013-02-26 | 2015-04-08 | 上海烟草集团有限责任公司 | Method for determining area quality of tobacco leaves based on intelligent image processing and model estimation |
| CN103954236B (en) * | 2014-05-16 | 2016-08-31 | 中国烟草总公司郑州烟草研究院 | A kind of assay method of slice cigarette shape degree of compacting |
| CN104122258B (en) * | 2014-07-15 | 2016-08-17 | 江苏中烟工业有限责任公司 | A kind of method analyzing tobacco leaf chopping uniformity |
| CN104237238B (en) * | 2014-10-11 | 2017-01-25 | 中国烟草总公司郑州烟草研究院 | Shredded tobacco structure prediction method |
| CN108776978A (en) * | 2018-05-28 | 2018-11-09 | 江苏中烟工业有限责任公司 | A kind of threshed redried strips piece shape characterizing method |
| CN113340904A (en) * | 2021-06-01 | 2021-09-03 | 贵州中烟工业有限责任公司 | Method for detecting shrinkages of tobacco flakes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| NL8900037A (en) * | 1989-01-06 | 1990-08-01 | Heuft Qualiplus Bv | DEVICE FOR INSPECTING MASS GOODS. |
| JP3985946B2 (en) * | 2002-01-10 | 2007-10-03 | ジェイティエンジニアリング株式会社 | Foreign matter inspection device |
| CN101650316B (en) * | 2009-09-15 | 2011-06-29 | 合肥安大电子检测技术有限公司 | Device for on line detecting tobacco strip structure |
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