CN103292723B - The assay method of furrowfilter rod characteristic parameter - Google Patents
The assay method of furrowfilter rod characteristic parameter Download PDFInfo
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- CN103292723B CN103292723B CN201310213344.6A CN201310213344A CN103292723B CN 103292723 B CN103292723 B CN 103292723B CN 201310213344 A CN201310213344 A CN 201310213344A CN 103292723 B CN103292723 B CN 103292723B
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Abstract
The invention provides a kind of assay method of furrowfilter rod characteristic parameter.There is following service part: worktable, annular light source, digital camera, sample panel, built-in furrowfilter rod characteristic parameter measure the computer of program.Mensuration program has following function: convergent-divergent sample image, meter record groove number, display concentric circles, identify gash depth data, calculate groove mean depth, display normal, identify groove width, calculate groove mean breadth, calculate grooved surface sum groove area ratio, and the standard deviation of calculating section parameter and the coefficient of variation.Its determination step comprises computer calculating, computer synthesis, computer display translation data.The present invention, by the raising of digital camera resolution and the upgrading of computer software program, improves automaticity and measures degree of accuracy; Add the contents of a project measuring groove width and groove area, make determination data more comprehensively, to judging that the feature of furrowfilter rod is more convincing.
Description
Technical field
The present invention relates to characteristic parameter and the assay method thereof of furrowfilter rod.
Background technology
In " vinegar fine furrowfilter rod characteristic parameter assay method " that the industry standard of " the fine furrowfilter rod of YCT223.1-2007 vinegar " and the 4th phase in 2010 " tobacco science and technology " are published, proposition can utilize microimaging technology to carry out figure collection to the cross section of furrowfilter rod, and utilize image analysis software to measure furrowfilter rod characteristic parameter, draw the number of grooves of sample, gash depth value.Surveying instrument comprises: stereomicroscope (enlargement factor 8 times ~ 50 times); Light source in annular; Digital camera; Standard micrometer; Sample panel; Cutting tool.The Instrument measuring trench features number of parameters that this standard and paper adopt is less, can not reflect the further feature of groove.
Number of patent application is " a kind of method and application thereof evaluating longitudinal surface area of strand " of CN201210197595.5, described method is based on following formula: when filter lengths and tow crimping degree are fixed, it is larger that formula is modified to I value, and the longitudinal action face of the tow reflected is long-pending larger.Meanwhile, additionally provide the application of said method, describe by described longitudinal surface area of strand equivalence the use that index is used to guide tow.This invention is associated with multiple physical function parameters of tow, but directly can not reflect the performance parameter of filter stick.
Number of patent application is " a kind of analogue means of evaluating cigarette filter tip strainability " of CN200910065339.9, and described device comprises auxiliary unit and material containing unit.Auxiliary unit is made up of fixed support and charging hopper; Material containing unit is a transparent sleeve of combining closely with cigarette drip catcher, and this transparent sleeve inside is provided with cigarette hold assembly and one section for loading the transparent ring-like re-entrant part of test material.This device can simulate polytype cigarette filter, includes: binary combined filter tip, ternary composite filter tip, single common filter tip etc.; Odd number can not evaluate the performance of furrowfilter rod.
Number of patent application is " a kind of cigarette or the filter stick sucking-off fibre concentration test evaluation method " of CN201210317977.7, first at filter disc Surface mulch one deck miillpore filter of aspirator, then on aspirator, adopt corresponding parameter to aspirate cigarette or filter stick, the quantity of bunch fiber in the collection face that suction terminates rear use microscopic examination filter membrane, calculates the concentration of cigarette or filter stick sucking-off fiber by quantity and the ratio of suction total volume of fiber on filter membrane.This invention measurements and calculations intuitively can go out some feature of cigarette or filter stick, but do not adopt computing machine to carry out image and Data Management Analysis, automaticity is low, and degree of accuracy is low, efficiency is low, and this measuring technology and evaluation method thereof are not suitable for advanced cigarette and filter stick manufacturing enterprise promotes the use of.
In " optimization of filter stick formation technological parameter and detection method " paper that the annual outstanding scientific paper collected papers of Shanghai Tobacco system 2005 are stepped on, the Main Function describing cigarette filter rod is the particle components in filters mainstream flue gas, comprises tar and nicotine.The filtration efficiency of filter stick evaluates the point of penetration of filter stick quality, and affect the factor of filter stick filtration efficiency except the cross sectional shape by monofilament, and beyond the impact of Dan Daiyu tow loading, the filtration efficiency of filtering rod and filter stick has close relationship.Therefore from the filtration efficiency controlling filter stick, controlling filtering rod is the main points that filter rod quality controls.And from the processibility of filter stick at seaming operation, the hardness of filter stick is the main points that filter rod quality controls.Therefore simultaneously the level of control key improving filter stick formation quality ensures that filter stick hardness meets the processing request of cigarette on the basis of the control accuracy improving filtering rod.In this paper, do not mention and relate to the distinctive characteristic parameter of furrowfilter rod and the optimization of detection method thereof, the product category of filter stick enterprise can not be described comprehensively.
Summary of the invention
Goal of the invention:
The mensuration feature kind overcoming original furrowfilter rod characteristic parameter project assay method is few, the defect that automaticity is not high enough, there is provided one to comprise more more characteristic parameters and corresponding measurement software and hardware, efficiency is higher, the assay method of the furrowfilter rod characteristic parameter project that precision is higher.
Technical scheme:
The assay method of furrowfilter rod characteristic parameter of the present invention, the determinator of employing has: the computer of worktable, annular light source, digital camera (3,000,000-2,000 ten thousand pixel), sampling instrument, sample panel, built-in furrowfilter rod characteristic parameter mensuration program.
Wherein, furrowfilter rod characteristic parameter mensuration program has following function: the image (can reach 0.2-50 doubly) of groove figure in convergent-divergent sample; Identify each groove figure (ABCD), meter record groove number; (spacing between concentric circles is d to multiple concentric circles boost lines of display filter stick, equidistantly, the span 1/20-1/100r of channel radii r, d, the quantity of corresponding concentric circle is 20-100), to identify that (range is 20mm, resolving power is 0.01mm for the gash depth data of sample; The radius of the half=filter stick of gash depth deducts groove centres radius of circle); By program computation groove mean depth (gash depth summation is divided by groove number); Show many normal boost lines (central angle between normal is Φ, waits central angle spacing, the span 1-5 degree of Φ, and the number of corresponding normal is 72-360 bar); Display through or near the normal of trench features point (two mid points G, H of groove dual-side) and two cylindrical intersection points E, F of filter stick cylindrical, with channel bottom or near intersection point M, N bottom two of concentric circles (inner circle) of channel bottom place; By program computation groove width (between the half place of gash depth or the hithermost concentric circles intersection point crossing with groove both sides arc length, the arc length namely between G, H); By program computation groove mean breadth (ratio of whole groove width summation and groove number); By program computation groove area (external arc between two cylindrical intersection points, the Inner arc between two bottom intersection points, through or near two normal line segments of these four intersection points, the area approximation of the figure EFMN surrounded together regards the area of groove as); By program computation groove area average (ratio of whole groove area summation and groove number), calculate groove area ratio (ratio of whole groove area summation and filter stick cylindrical area).By program computation gash depth, groove width, groove area (namely dactylotome groove is similar to the area of figure EFMN) isoparametric standard deviation and the coefficient of variation.
Standard deviation: the standard of a kind of metric data continuous item destination datas such as (herein) dactylotome groove depth, groove width or groove areas point spread of distribution, departs from the degree of arithmetic mean in order to weigh data value.
The coefficient of variation: the standard deviation of one group of data and the ratio of its average index, it is a relative variability index.
Assay method comprises following operation steps:
1, with cutting tool, filter stick is cut into several the thin slices of 3-6mm as sample, be placed in the sample well of sample panel respectively;
2, sample panel is put in annular light source, takes sample image with digital camera, inputs the computer that built-in furrowfilter rod characteristic parameter measures program;
3, by this computer program enlarged image, computer automatically identifies and counts groove number;
4, computer automatically identify and read (by with the comparing of equally spaced concentric circles boost line) data of each gash depth of sample, calculate gash depth mean value, the standard deviation of gash depth and the coefficient of variation;
5, computer automatically identify and read each groove groove width (by with etc. the comparing of normal boost line of central angle spacing), calculate groove width mean value, the standard deviation of groove width and the coefficient of variation;
6, last, by each destination data of computer display translation.
In the present invention, mensuration program can also have following function: calculate groove area, calculates groove area average, calculates groove area ratio.
Operation steps 5) and 6) between, following step can also be had: by the metering of the identification of each unique point, camber line and line segment length, the item destination datas such as groove area, groove area average, groove area ratio are gone out by computer composite calulation, and the standard deviation of groove area and the coefficient of variation, the standard deviation of groove area ratio and the coefficient of variation.
By the metering of the identification of each unique point, camber line and line segment length, the concrete grammar of groove area is gone out: by the external arc between two cylindrical intersection points by computer composite calulation, Inner arc between two bottom intersection points, through two normal line segments of these four intersection points, the area approximation of the figure EFMN surrounded together regards the area of groove as.
Beneficial effect:
The present invention is compared with original assay method, reduce while using the manual tools such as microscope, micrometer, by the digital camera raising of rate and the establishment of computer software program and upgrading respectively, the use of minimizing equipment, reduce labor capacity, the measuring error preventing the maloperation of personnel from bringing, improves automaticity and measures degree of accuracy; And add the contents of a project measuring groove width and groove area, make determination data more comprehensively, to judging that the feature of furrowfilter rod is more convincing.The method is applicable to the production of all kinds furrowfilter rod and application enterprise carries out product test and product quality differentiates use.
Accompanying drawing explanation
Fig. 1 is one of the present invention and measures process chart;
Fig. 2 is a groove width of the present invention and groove area assay method schematic diagram;
In figure, 1, filter stick cylindrical; 2, the center of circle; 3, concentric circles; 4, normal; 5, gash depth; 6, groove width; 7, groove figure; 8, groove is similar to figure EFMN.
Embodiment
embodiment:
A kind of assay method of furrowfilter rod characteristic parameter, the digital camera of worktable, annular light source, 8,000,000 pixels, sampling instrument, sample panel, built-in furrowfilter rod characteristic parameter is adopted to measure the computer of program, described mensuration program is except having the measuring ability of original standard, also there is following function: calculate groove area, calculate groove area average, calculate groove area ratio.
As shown in Figure 1, assay method comprises following operation steps:
1) with cutting tool, filter stick is cut into several thick thin slices of 5mm as sample, be placed in the sample well of sample panel respectively;
2) sample panel is put in annular light source, takes sample image with digital camera, inputs the computer that built-in furrowfilter rod characteristic parameter measures program;
3) by this computer program enlarged image, convergent-divergent sample image reaches 0.2-20 doubly, each groove figure 7(ABCD of artificial cognition) (as shown in Figure 2) count groove number;
4) the filter stick cylindrical 1 of filter stick, the center of circle 2, multiple concentric circles 3 boost line is shown, the span 1/30r of d, the quantity of corresponding concentric circle 3 is 30, by with the comparing of equally spaced concentric circles 3 boost line, artificial cognition also reads each gash depth 5(EM or FN of sample) data, gash depth data resolution is 0.01mm, and computer calculates groove mean depth;
5) span 3 degree of central angle Φ, the number of normal 4 is 120, by with wait comparing of normal 4 boost line of central angle spacing, artificial cognition also reads the arc length between groove width 6(G, H of each groove), computer calculates groove mean breadth; Go out groove by computer composite calulation and be similar to figure EFMN(8) area, groove area average, groove area ratio etc. item destination data; By the external arc between two cylindrical intersection points, the Inner arc between two bottom intersection points, through two normal line segments of these four intersection points, the figure EFMN(surrounded together is as shown in Figure 2) area approximation regard the area of groove as;
6) last, by each destination datas such as computer display translation groove number, gash depth 5, groove mean depth, groove width 6, groove mean breadth, groove area, groove area average, groove area ratios, and except groove number the standard deviation of other all items data and the coefficient of variation.
Claims (6)
1. an assay method for furrowfilter rod characteristic parameter, has worktable, a computer that annular light source, the digital camera of 3,000,000-2,000 ten thousand pixels, sampling instrument, sample panel, built-in furrowfilter rod characteristic parameter measure program, it is characterized in that:
Described mensuration program has following function: the image of groove figure (7) in convergent-divergent sample, identifies each groove figure, meter record groove number; Multiple concentric circles boost lines of display filter stick, to identify gash depth (5) data of sample; By standard deviation and the coefficient of variation of program computation groove mean depth, gash depth (5); Show many normal boost lines; Display through or near the normal of trench features point G, H and two cylindrical intersection points E, F of filter stick cylindrical, with channel bottom place or hithermost concentrically ringed intersection point M, N bottom two; By program computation groove width (6); By standard deviation and the coefficient of variation of program computation groove mean breadth, groove width (6);
Assay method comprises following operation steps:
1) with cutting tool, filter stick is cut into several the thin slices of 3-6mm as sample, be placed in the sample well of sample panel respectively;
2) sample panel is put in annular light source, takes sample image with digital camera, inputs the computer that built-in furrowfilter rod characteristic parameter measures program;
3) by this mensuration program enlarged image, computer automatically identifies and counts groove number;
4) computer automatically identifies and reads the data of each gash depth (5) of sample, and calculates groove mean depth, or also calculates standard deviation and the coefficient of variation of gash depth (5);
5) computer identifies the groove width (6) of each groove automatically, calculates groove mean breadth, or also calculates standard deviation and the coefficient of variation of groove width (6);
6) last, by each destination data of computer display translation.
2. the assay method of furrowfilter rod characteristic parameter according to claim 1, is characterized in that: by being comparing of equally spaced concentric circles (3) boost line of d with spacing, read the data of each gash depth of sample.
3. the assay method of furrowfilter rod characteristic parameter according to claim 1, is characterized in that: by being comparing of normal (4) boost line of the spacing such as central angle such as grade of Φ with central angle, calculate groove width.
4. the assay method of furrowfilter rod characteristic parameter according to claim 1, is characterized in that: in convergent-divergent sample, the image of groove figure (7) reaches 0.2-50 doubly, and gash depth data resolution is 0.01mm.
5. the assay method of furrowfilter rod characteristic parameter according to claim 1, is characterized in that: mensuration program has following function: calculate groove area, calculates groove area average, calculates groove area ratio;
Operation steps 5) and 6) between, also have following step: the data being gone out groove area, groove area average, groove area ratio by computer composite calulation, and calculate the standard deviation of groove area and the coefficient of variation, the standard deviation of groove area ratio and the coefficient of variation.
6. the assay method of furrowfilter rod characteristic parameter according to claim 5, it is characterized in that: by the metering of the identification of each unique point, camber line and line segment length, go out groove by computer composite calulation and be similar to figure EFMN(8) area, the approximate area regarding groove as.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557807B (en) * | 2013-11-08 | 2016-01-06 | 湖南中烟工业有限责任公司 | The method of cigarette filter rod end surface shape quality testing and device thereof |
| CN103884717B (en) * | 2014-04-03 | 2016-03-23 | 四川三联卷烟材料有限公司 | The device of a kind of automatic test extraordinary filter stick section feature parameter and measuring method |
| CN104865273A (en) * | 2015-06-17 | 2015-08-26 | 川渝中烟工业有限责任公司 | Method for determining aromatic bead positional deviation in aromatic bead filter sticks |
| CN105277123A (en) * | 2015-09-11 | 2016-01-27 | 浙江中烟工业有限责任公司 | Groove filter stick quality automatic evaluation system based on microscope |
| CN109657724B (en) * | 2018-12-21 | 2021-08-03 | 浙江中烟工业有限责任公司 | Parallel computing-based method for rapidly computing characteristic parameters of grooved filter sticks |
| CN113269757B (en) * | 2021-05-28 | 2022-05-27 | 浙江中烟工业有限责任公司 | Groove characteristic parameter processing method based on hierarchical clustering analysis |
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