CN103292723A - Determining method for grooved filter stick feature parameters - Google Patents
Determining method for grooved filter stick feature parameters Download PDFInfo
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- CN103292723A CN103292723A CN2013102133446A CN201310213344A CN103292723A CN 103292723 A CN103292723 A CN 103292723A CN 2013102133446 A CN2013102133446 A CN 2013102133446A CN 201310213344 A CN201310213344 A CN 201310213344A CN 103292723 A CN103292723 A CN 103292723A
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Abstract
The invention provides a determining method for grooved filter stick feature parameters. A determining device used by the method comprises a workbench, an annular light source, a digital camera, a sample plate, and a computer with a built-in grooved filter stick feature parameter determining program. The determining program has the following functions: scaling sample images, recording groove number, displaying concentric circles, identifying groove depth data, calculating average groove depth, displaying normal, identifying groove width, calculating average groove width, calculating groove area and groove area ratio, and calculating standard deviation and variable coefficient of part of parameters. The determining method includes: computer calculating, computer synthesis, and displaying and outputting data through the computer. By increasing resolution of the digital camera and upgrading the computer program, automation level and determining precision are increased, groove width determining and groove area determining are added, comprehensive determining data is achieved, and convincing determining of grooved filter stick features is achieved.
Description
Technical field
The present invention relates to characteristic parameter and the assay method thereof of furrowfilter rod.
Background technology
In " the fine furrowfilter rod characteristic parameter of the vinegar assay method " of the industry standard of " the fine furrowfilter rod of YCT223.1-2007 vinegar " and the 4th phase in 2010 " tobacco science and technology " publication, proposition can utilize the microimaging technology that the figure collection is carried out in the cross section of furrowfilter rod, and utilize pattern analysis software that the furrowfilter rod characteristic parameter is measured, draw number of grooves, the gash depth value of sample.Surveying instrument comprises: stereomicroscope (8 times ~ 50 times of enlargement factors); Light source on the annular; Digital camera; The standard micrometer; Sample panel; Cutting tool.The Instrument measuring trench features number of parameters of this standard and The thesis is less, can not reflect the further feature of groove.
Number of patent application be CN201210197595.5's " a kind of evaluation tow vertical table Method for Area and application thereof ", described method is based on following formula: when filter stick length and tow crimping degree fixedly the time, it is more big that formula is modified to the I value, and the vertical action face of the tow that reflects is long-pending more big.Simultaneously, also provide the application of said method, be about to described tow vertical table area equivalent and describe the use that index is used in reference to the seal wire bundle.This invention is associated with a plurality of physical function parameters of tow, but can not directly reflect the performance parameter of filter stick.
Number of patent application be CN's 200910065339.9 " a kind of analogue means of evaluating cigarette filter tip strainability ", described device comprises auxiliary unit and material containing unit.Auxiliary unit is made of fixed support and charging hopper; The material containing unit is a transparent sleeve of combining closely with the cigarette drip catcher, and this transparent sleeve inside is provided with cigarette hold assembly and one section transparent ring-like re-entrant part that is used for loading test material.This device can be simulated polytype cigarette filter, includes: binary composite filter tip, ternary composite filter tip, single common filter tip etc.; Odd number can not be estimated the performance of furrowfilter rod.
Number of patent application be CN's 201210317977.7 " a kind of cigarette or filter stick sucking-off fibre concentration test evaluation method ", at first cover one deck miillpore filter on the filter disc top layer of aspirator, adopt corresponding parameter that cigarette or filter stick are aspirated at aspirator then, aspirate the quantity of bunch fiber on the collection face that finishes to use the microscopic examination filter membrane in the back, calculate the concentration of cigarette or filter stick sucking-off fiber by quantity and the ratio that aspirates total volume of fiber on the filter membrane.This invention measurements and calculations intuitively 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, efficient is low, and this measuring technology and evaluation method thereof are not suitable for advanced cigarette and filter stick manufacturing enterprise and promote the use of.
In " optimization of filter stick formation technological parameter and detection method " paper that tobacco system 2005 annual outstanding scientific paper collected papers in Shanghai are stepped on, the main effect of having introduced cigarette filter rod is the particle composition that filters in the main flume, comprises tar and nicotine.The filtration efficiency of filter stick is to estimate the point of penetration of filter stick quality, and the factor that influence the filter stick filtration efficiency is removed the cross sectional shape that is subjected to monofilament, and beyond the influence of Dan Daiyu tow loading, the filtration efficiency of filtering rod and filter stick has close relationship.Therefore from the filtration efficiency of control filter stick, the control filtering rod is the main points of filter rod quality control.And from the processibility of filter stick in the cigarette process, the hardness of filter stick is the main points of filter rod quality control.Therefore the control level key that improves the filter stick formation quality is to guarantee that simultaneously filter stick hardness satisfies the processing request of cigarette on the basis of the control accuracy that improves filtering rod.In this paper, do not mention the distinctive characteristic parameter that relates to furrowfilter rod and the optimization of detection method thereof, can not describe the product category of filter stick enterprise comprehensively.
Summary of the invention
Goal of the invention:
The mensuration feature kind that overcomes original furrowfilter rod characteristic parameter project assay method is few, the defective that automaticity is not high enough, a kind of more more characteristic parameters and corresponding measurement software and hardware of comprising is provided, and efficient 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: worktable, annular light source, digital camera (3,000,000-2,000 ten thousand pixel), sampling instrument, sample panel, built-in furrowfilter rod characteristic parameter are measured the computer of program.
Wherein, furrowfilter rod characteristic parameter mensuration program has following function: the image of groove figure in the convergent-divergent sample (can reach 0.2-50 doubly); Identify each groove figure (ABCD), meter record groove number; (spacing between the concentric circles is d to a plurality of concentric circles boost lines of demonstration filter stick, equidistantly, groove radius r, the span 1/20-1/100r of d, the quantity of corresponding concentric circle is 20-100), so as the gash depth data of identification sample (range is that 20mm, resolving power are 0.01mm; The radius of half of gash depth=filter stick deducts groove centres radius of circle); Calculate groove mean depth (gash depth is sued for peace divided by groove number) by program; Show many normal boost lines (central angle between the normal is Φ, waits the central angle spacing, the span 1-5 degree of Φ, the bar number of corresponding normal is the 72-360 bar); Show through or the normal of the most close trench features point (two mid point G, H of groove dual-side) and two cylindrical intersection point E, F of filter stick cylindrical, intersection point M, N bottom two of the concentric circles (interior circle) at channel bottom or the most close channel bottom place; Calculate groove width (arc length, i.e. arc length between G, the H between the crossing intersection point in half place of gash depth or hithermost concentric circles and groove both sides) by program; Calculate groove mean breadth (all ratio of groove width summation and groove number) by program; By program calculate the groove area (the interior circular arc between the external arc between two cylindrical intersection points, two bottom intersection points, through or two normal line segments of the most close these four intersection points, the area approximation of the figure EFMN that surrounds is together regarded the area of groove as); Calculate groove area average (all ratio of the summation of groove area and groove number) by program, calculate groove area ratio (all ratios of groove area summation and filter stick cylindrical area).Calculate gash depth, groove width, groove area (being the area of the approximate figure EFMN of dactylotome groove) isoparametric standard deviation and the coefficient of variation by program.
Standard deviation: the standard of the degree of scatter that a kind of metric data (continuous item destination datas such as dactylotome groove depth, groove width or groove area herein) distributes, in order to weigh the degree that data value departs from arithmetic mean.
The coefficient of variation: the ratio of the standard deviation of one group of data and its average index, it is a relative variability index.
Comprise following operation steps in the assay method:
1, several thin slices that filter stick cut into 3-6mm with cutting tool place the sample well of sample panel respectively as sample;
2, sample panel is put in the annular light source, takes sample image with digital camera, imports the computer that built-in furrowfilter rod characteristic parameter is measured program;
3, by this computer program enlarged image, groove number is identified and counted to computer automatically;
4, computer identify automatically and read (by with the comparison of equally spaced concentric circles boost line) data of each gash depth of sample, calculate standard deviation and the coefficient of variation of gash depth mean value, gash depth;
5, computer identify automatically and read each groove groove width (by with etc. the comparison of normal boost line of central angle spacing), calculate standard deviation and the coefficient of variation of groove width mean value, groove width;
6, last, by the data of each project of computer demonstration output.
Among the present invention, the mensuration program can also have following function: calculate the groove area, calculate the groove area average, calculate the groove area ratio.
Operation steps 5) and 6) between, following step can also be arranged: the metering of identification, camber line and line segment length by each unique point, by the synthetic data that calculate groove area, groove area average, groove area ratio etc. project of computer, and the standard deviation of groove area and the coefficient of variation.
The metering of identification, camber line and line segment length by each unique point, synthesized the concrete grammar that calculates the groove area by computer: with the external arc between two cylindrical intersection points, interior circular arc bottom two between the intersection point, through two normal line segments of these four intersection points, the area approximation of the figure EFMN that surrounds is together regarded the area of groove as.
Beneficial effect:
The present invention compares with original assay method, when reduce using artificial instrument such as microscope, micrometer, by the digital camera raising of rate and establishment and the upgrading of computer software program respectively, the use of minimizing equipment, reduce labor capacity, prevent the measuring error that personnel's maloperation brings, improved automaticity and measured degree of accuracy; And increased the contents of a project of measuring groove width and groove area, and make determination data more comprehensively, more convincing to the feature of judging furrowfilter rod.This method is fit to the production of all kinds furrowfilter rod and uses enterprise and carry out product test and product quality differentiation use.
Description of drawings
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 synoptic diagram;
Among the figure, 1, the filter stick cylindrical; 2, the center of circle; 3, concentric circles; 4, normal; 5, gash depth; 6, groove width; 7, groove figure; 8, the approximate figure EFMN of groove.
Embodiment
Embodiment:
A kind of assay method of furrowfilter rod characteristic parameter, the digital camera of employing worktable, annular light source, 8,000,000 pixels, sampling instrument, sample panel, built-in furrowfilter rod characteristic parameter are measured the computer of program, described mensuration program is except the measuring ability with original standard, also has following function: calculate the groove area, calculate the groove area average, calculate the 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, place the sample well of sample panel respectively;
2) sample panel is put in the annular light source, takes sample image with digital camera, imports the computer that built-in furrowfilter rod characteristic parameter is measured program;
3) by this computer program enlarged image, the convergent-divergent sample image reaches 0.2-20 doubly, each groove figure 7(ABCD of artificial cognition) (as shown in Figure 2) and count groove number;
4) filter stick cylindrical 1, the center of circle 2, a plurality of concentric circles 3 boost lines of demonstration filter stick, the span 1/30r of d, the quantity of corresponding concentric circle 3 is 30, by with the comparison of equally spaced concentric circles 3 boost lines, artificial cognition also reads each gash depth 5(EM or the FN of sample) data, the gash depth data resolution is 0.01mm, and computer calculates the groove mean depth;
5) span 3 of central angle Φ degree, the bar number of normal 4 is 120, by with the comparison of normal 4 boost lines that wait the central angle spacing, artificial cognition also reads arc length between groove width 6(G, the H of each groove), computer calculates the groove mean breadth; By the synthetic approximate figure EFMN(8 of groove that calculates of computer) the data of area, groove area average, groove area ratio etc. project; With the external arc between two cylindrical intersection points, two the interior circular arcs of bottom between the intersection point, through two normal line segments of these four intersection points, the figure EFMN(that surrounds together is as shown in Figure 2) area approximation regard the area of groove as;
6) last, the data that shown each projects such as output groove number, gash depth 5, groove mean depth, groove width 6, groove mean breadth, groove area, groove area average, groove area ratio by computer, and except groove number standard deviation and the coefficient of variation of other all items data.
Claims (7)
1. the assay method of a furrowfilter rod characteristic parameter, digital camera, sampling instrument, sample panel, built-in furrowfilter rod characteristic parameter with worktable, annular light source, 3,000,000-2,000 ten thousand pixels are measured the computer of program, it is characterized in that:
Described mensuration program has following function: the image of groove figure in the convergent-divergent sample (7), identify each groove figure, meter record groove number; The a plurality of concentric circles boost lines that show filter stick are so that gash depth (5) data of identification sample; Calculate standard deviation and the coefficient of variation of groove mean depth, gash depth (5) by program; Show many normal boost lines; Show process or the normal of the most close trench features point G, H and two cylindrical intersection point E, F of filter stick cylindrical, with channel bottom place or hithermost concentrically ringed two bottom intersection point M, N; Calculate groove width (6) by program; Calculate standard deviation and the coefficient of variation of groove mean breadth, groove width (6) by program;
Comprise following operation steps in the assay method:
1) several thin slices that filter stick cut into 3-6mm with cutting tool place the sample well of sample panel respectively as sample;
2) sample panel is put in the annular light source, takes sample image with digital camera, imports the computer that built-in furrowfilter rod characteristic parameter is measured program;
3) measure the program enlarged image by this, groove number is identified and counted to computer automatically;
4) data of each gash depth (5) of sample are identified and read to computer automatically, and calculate the groove mean depth, or also calculate standard deviation and the coefficient of variation of gash depth (5);
5) computer is identified the groove width (6) of each groove automatically, calculates the groove mean breadth, or also calculates standard deviation and the coefficient of variation of groove width (6);
6) last, by the data of each project of computer demonstration output.
2. the assay method of furrowfilter rod characteristic parameter according to claim 1 is characterized in that: by with spacing be the comparison of equally spaced concentric circles (3) boost line of d, 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 with central angle be the comparison of normal (4) boost line that waits the central angle spacing of Φ, calculate groove width.
4. the assay method of furrowfilter rod characteristic parameter according to claim 1 is characterized in that: the image of groove figure in the convergent-divergent sample (7) reaches 0.2-50 doubly, and the gash depth data resolution is 0.01mm.
5. according to the assay method of claim 2 or 3 described furrowfilter rod characteristic parameters, it is characterized in that: the span 1/20-1/100r of d, the span 1-5 degree of central angle Φ.
6. the assay method of furrowfilter rod characteristic parameter according to claim 1, it is characterized in that: the mensuration program has following function: calculate the groove area, calculate the groove area average, calculate the groove area ratio;
Operation steps 5) and 6) between, also have following step: by the synthetic data that calculate groove area, groove area average, groove area ratio of computer, and calculate standard deviation and the coefficient of variation of groove area, groove area ratio.
7. the assay method of furrowfilter rod characteristic parameter according to claim 6, it is characterized in that: the metering of identification, camber line and line segment length by each unique point, by the synthetic approximate figure EFMN(8 of groove that calculates of computer) area, the approximate area of regarding groove as.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103557807A (en) * | 2013-11-08 | 2014-02-05 | 湖南中烟工业有限责任公司 | Method and device for detecting quality of cigarette filter stick end face shape |
| CN103884717A (en) * | 2014-04-03 | 2014-06-25 | 四川三联卷烟材料有限公司 | Device for automatically testing section characteristic parameter of special filter stick and measurement 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 |
| CN109657724A (en) * | 2018-12-21 | 2019-04-19 | 浙江中烟工业有限责任公司 | A kind of furrowfilter rod characteristic parameter quick calculation method based on parallel computation |
| CN113269757A (en) * | 2021-05-28 | 2021-08-17 | 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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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103557807A (en) * | 2013-11-08 | 2014-02-05 | 湖南中烟工业有限责任公司 | Method and device for detecting quality of cigarette filter stick end face shape |
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| 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 |
| CN109657724A (en) * | 2018-12-21 | 2019-04-19 | 浙江中烟工业有限责任公司 | A kind of furrowfilter rod characteristic parameter quick calculation method based on parallel computation |
| 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 |
| CN113269757A (en) * | 2021-05-28 | 2021-08-17 | 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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