CN112067560A - Method for measuring stability of tobacco feed liquid based on combination of colorimetric value and entropy weight method - Google Patents
Method for measuring stability of tobacco feed liquid based on combination of colorimetric value and entropy weight method Download PDFInfo
- Publication number
- CN112067560A CN112067560A CN202010784928.9A CN202010784928A CN112067560A CN 112067560 A CN112067560 A CN 112067560A CN 202010784928 A CN202010784928 A CN 202010784928A CN 112067560 A CN112067560 A CN 112067560A
- Authority
- CN
- China
- Prior art keywords
- feed liquid
- value
- stability
- entropy weight
- tobacco
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 58
- 241000208125 Nicotiana Species 0.000 title claims description 50
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims description 50
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 50
- 238000005070 sampling Methods 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 7
- 239000010453 quartz Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000011156 evaluation Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000004615 ingredient Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000013112 stability test Methods 0.000 claims description 2
- 238000000855 fermentation Methods 0.000 abstract description 6
- 230000004151 fermentation Effects 0.000 abstract description 6
- 230000006866 deterioration Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000012512 characterization method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000012854 evaluation process Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/251—Colorimeters; Construction thereof
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/16—Matrix or vector computation, e.g. matrix-matrix or matrix-vector multiplication, matrix factorization
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Computational Mathematics (AREA)
- Mathematical Optimization (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Analysis (AREA)
- Analytical Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Data Mining & Analysis (AREA)
- Algebra (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Computing Systems (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Manufacture Of Tobacco Products (AREA)
Abstract
The invention relates to a method for measuring the stability of feed liquid for cigarettes based on a chromatic value combined with an entropy weight method, which comprises the steps of sampling, measuring the chromatic value, objectively weighting by the entropy weight method, calculating the variation coefficient of a chromatic index, determining the weight coefficient of different chromatic values by the entropy weight method, and calculating the comprehensive variation coefficient of the chromatic value and the stability of the feed liquid. In the process of changing the stability of the feed liquid for the cigarettes, the color of the feed liquid is changed to a certain degree along with the conditions of feed liquid layering, fermentation deterioration and the like, and the cigarette feed liquid with changed stability or slight change can be accurately and sensitively measured by utilizing a chromatic value combined with an entropy weight method.
Description
Technical Field
The invention belongs to the technical field of tobacco feed liquid detection, and particularly relates to a method for measuring the stability of tobacco feed liquid based on a chromatic value combined entropy weight method.
Background
The feed liquid for the cigarettes has important significance for improving and stabilizing the quality of the cigarettes, endowing the cigarettes with unique smoking style and establishing the style of the cigarettes. With the development of cigarette industry, the regional production of cigarettes in different areas across areas or across provinces has become a trend, and the remote cooperation among factories is urgent. The cigarette feed liquid is used as a complex mixture of multiple groups of ingredients and is limited by factors such as confidential formula management, and the cigarette feed liquid of the same cigarette brand needs to be uniformly and intensively prepared and supplied by a local factory so as to ensure the stability of the cigarette feed liquid in the cigarette production. Therefore, in order to avoid the fermentation and deterioration of the feed liquid for the cigarettes in the transportation process and influence the quality assurance of the feed liquid for the cigarettes, the method for monitoring and measuring the quality and the stability of the feed liquid for the cigarettes in the long-distance transportation process is very important.
At present, indexes for detecting the stability of the tobacco feed liquid in the tobacco industry are not many, and commonly available indexes are acidity value, pH value, refractive density and the like, but under the conditions that the tobacco feed liquid is fermented, degenerated and the like after long-distance transportation, the indexes are small in change amplitude or unchanged, so that the indexes cannot be well used for detecting and representing the stability of the tobacco feed liquid. Therefore, a new detection method is searched for stability monitoring and characterization of the tobacco feed liquid, and the method has important significance for high-quality development of the tobacco industry.
The detection methods of acidity value, pH, refractive density or particle size in the feed liquid, centrifugal precipitation rate and the like have doubt on the stability detection and characterization of the feed liquid. For example, for the feed liquid which generates the precipitate at the bottom of the charging bucket in the long-distance transportation process, theoretically, the stability of the feed liquid is reduced, but indexes such as acidity value, pH value, refractive density and the like are not changed obviously; for another example, for a tobacco feed liquid which is fermented and deteriorated in a long-distance transportation process, the particle size, the centrifugal precipitation rate and the like in the feed liquid do not change significantly, so that the indexes in the whole view cannot be scientifically and accurately used for detecting the stability of the tobacco feed liquid.
Currently, in the tobacco industry, a systematic, accurate and sensitive detection method is not used for representing the stability of the feed liquid for the tobacco, the stability of the feed liquid is detected and represented through indexes of acidity value, pH value, refractive density or particle size in the feed liquid and centrifugal precipitation rate, controversial disputes exist in the industry, and the accuracy and the sensitivity of the indexes always restrict the step of homogenization development of the feed liquid for the tobacco.
Disclosure of Invention
The invention aims to provide a method for measuring the stability of a tobacco feed liquid based on a chromatic value combined entropy weight method, which aims to solve the problem that the prior art cannot systematically, accurately and sensitively monitor and characterize the stability of the tobacco feed liquid.
The invention is realized by the following technical scheme:
a method for measuring the stability of tobacco feed liquid based on a chromatic value combined with an entropy weight method comprises the following steps:
s1, sampling
Sampling once at a secondary ingredient outlet of the tobacco material liquid at set time intervals within any batch of production time, wherein i is a natural number more than or equal to 1, and sampling for i times;
s2 colorimetric value measurement
At room temperature, respectively taking a set amount of the tobacco feed liquid from each sample, respectively placing the tobacco feed liquid into a detection device, and measuring the CIE-L a b color space value of each sample by using a color difference meter: l is from black to white, representing a lightness value, a is from green to red, representing a redness value, b is from blue to yellow, representing a yellowness value;
s3 objective weighting of entropy weight method
Taking 3 chromaticity indexes L, a and b as 3 evaluation indexes at room temperature, and objectively weighting the variation coefficients of the 3 chromaticity indexes by adopting an information entropy principle; respectively weighting the variation coefficient of each colorimetric value of each sample of the cigarette feed liquid subjected to the stability test to obtain the comprehensive variation coefficient of 3 colorimetric indexes;
s4, calculating the coefficient of variation of the chromaticity index
Respectively carrying out colorimetric value test on the preprocessed i samples A1-Ai according to a colorimetric value measuring method to obtain a numerical matrix Xij of 3 colorimetric values of the i samples, and calculating an average value MN of each colorimetric indexj(A1-Ai)Standard deviation SDj(A1-Ai)And coefficient of variation thereof
S5, determining weighting coefficients of different chromatic values by entropy weight method
According to the requirement of entropy weight calculation on data, normalizing index data of each column in the sample colorimetric value matrix Xij by using a formula (1), and enabling attribute values X 'of each column of the normalized index matrix'1j，X′2j，…，X′ijRegarding the distribution of the information amount, the information entropy Ej of the chroma index j is calculated by using formula (2), and the entropy weight coefficient wj of the chroma index j can be obtained by formula (3):
in the formula: wj is more than or equal to 0 and less than or equal to 1,
calculating weight coefficients w 1-w 3 of 3 chromaticity indexes L, a and b through formulas (1), (2) and (3);
s6, calculating the comprehensive variation coefficient of chromatic value and the stability of feed liquid
On the basis of the variation coefficients of 3 chromaticity indexes L, a and b and the entropy weight coefficient calculation result thereof, the comprehensive variation coefficient CV of 3 chromaticity indexes of i samples of the feed liquid for the cigarette is obtained by using a formula (4)ACalculating the blending uniformity H value of the tobacco shreds by using a formula (5);
H＝(1-CVA)×100％ (5)。
preferably, the samples are respectively put in a constant temperature and humidity box with the temperature of 20 +/-1 ℃ and the relative humidity of 65 +/-2 percent for balancing for 48 hours for standby.
Preferably, the detection device is a quartz rectangular chamber.
Preferably, the sample in each quartz rectangular cell is measured at 3 different positions, and the colorimeter automatically calculates 1 average value for each 3 consecutive measurements.
Preferably, the method also comprises the steps of testing accuracy and precision, respectively selecting the tobacco material liquid samples with different brands, respectively sampling for multiple times to perform colorimetric value parallel determination, and calculating whether the standard deviation and the variation coefficient of the sample are within a set range.
The invention has the beneficial effects that:
in the process of changing the stability of the feed liquid for the cigarettes, the color of the feed liquid is changed to a certain degree along with the conditions of feed liquid layering, fermentation deterioration and the like, and the cigarette feed liquid with changed stability or slight change can be accurately and sensitively measured by utilizing a chromatic value combined with an entropy weight method.
Detailed Description
The technical solutions of the present invention are described in detail below by examples, and the following examples are only exemplary and can be used only for explaining and explaining the technical solutions of the present invention, but not construed as limiting the technical solutions of the present invention.
With the development of the colorimetry theory and practice, the method for evaluating the change of chemical components and physical indexes in a certain substance by using a colorimetric value is relatively mature, a certain degree of evaluation standard and a certain degree of evaluation method are formed, different substances have large difference in physical and chemical properties and colors, and a foundation is laid for evaluating the stability of each component in the feed liquid for the cigarettes by using a color difference method. In the process of changing the stability of the feed liquid for the cigarettes, the color of the feed liquid is changed to a certain degree along with the conditions of feed liquid layering, fermentation deterioration and the like, and the cigarette feed liquid with changed stability or slight change can be accurately and sensitively measured by utilizing a chromatic value combined with an entropy weight method.
The application provides a method for measuring stability of feed liquid for cigarettes based on a combination of a chromatic value and an entropy weight method, which comprises the following steps:
sampling:
the method comprises the steps of randomly selecting four grades of A-D cigarette feed liquid, sampling 5 times at the outlet of a secondary ingredient (a complete formula finished product material) of the cigarette feed liquid within the production time of any one batch of each grade, wherein the sampling interval is 20 minutes, in other embodiments of the application, the interval time is determined according to needs and can be less than 20 minutes or more than 20 minutes, such as 15 minutes, 30 minutes, 1 hour and the like, sampling about 500g each time, recording the cigarette feed liquid samples of different grades at different time points as Ai, Bi, Ci and Di, wherein i is a natural number of 1,2,3, … and 10. Namely, the tobacco material liquid samples are divided into four groups according to the brand.
The four groups of feed liquid samples for tobacco are respectively put in a constant temperature and humidity box with the temperature of 20 +/-1 ℃ and the relative humidity of 65 +/-2 percent for balancing for 48 hours for later use.
Determination of the colorimetric value
Selecting any one group of feed liquid samples for cigarettes, wherein the samples for the feed liquid for cigarettes are A1, A2, A3, A4 and A5 by taking the brand A as an example, placing 50g of each sample for the feed liquid for cigarettes in a 250mm 250 x 250 quartz rectangular cell at room temperature, sucking residual bubbles on the surface by using a dropper, and measuring the CIE-L a b color space value of the feed liquid by using a color difference meter: l is from black to white and represents a lightness value, a is from green to red and represents a redness value, b is from blue to yellow and represents a yellowness value. The chroma index is represented by Cj (j is a natural number of 1,2 and 3) for j times in total. The sample of the feed liquid in each quartz rectangular cell was measured at 3 different positions, and the average value was automatically calculated 1 time for each 3 consecutive measurements by the colorimeter.
The entropy weight method is objectively weighted:
and at room temperature, taking 3 chromaticity indexes L, a and b as 3 evaluation indexes, objectively weighting the variation coefficients of the 3 chromaticity indexes by adopting an information entropy principle, respectively weighting the variation coefficients of each chromaticity value of 5 tobacco feed liquid samples to further obtain comprehensive variation coefficients of the 3 chromaticity indexes, and calculating the blending uniformity of the cut tobacco in the formula by utilizing the comprehensive variation coefficients.
Calculating the variation coefficient of the chromaticity index:
pretreating 5 cigarette feed liquid samples of brand A, respectively testing the degree of common value according to a method for measuring the chromatic value to obtain a numerical value matrix Xij of 3 chromatic values of the cigarette feed liquid samples of brand A5, and calculating the average value of each chromatic index
Standard deviation of
And coefficient of variation thereof
The results are shown in Table 1. As can be seen from Table 1, the coefficient of variation of the 3 indexes is greatly different, and is between 1.14% and 5.67%, which indicates that the information amount provided by different chromaticity indexes in the evaluation process is different.
TABLE 1 colorimetric values of 5 different time points of feed liquid for brand A cigarette
| Feed liquid number for cigarette | L* | a* | b* |
| A1 | 59.17 | 9.91 | 29.72 |
| A2 | 59.84 | 9.73 | 29.73 |
| A3 | 59.24 | 10.67 | 31.14 |
| A4 | 60.85 | 9.13 | 28.12 |
| A5 | 59.99 | 10.12 | 29.53 |
| Mean value of | 59.82 | 9.91 | 29.65 |
| Standard deviation of | 0.68 | 0.56 | 1.07 |
| Coefficient of variation/%) | 1.14 | 5.67 | 3.61 |
The entropy weight method determines the weight coefficients of different colorimetric values:
taking the colorimetric value matrix Xij of the cigarette feed liquid in table 1 as an example, according to the requirement of entropy weight calculation on data, firstly, normalizing each column of index data of the colorimetric value matrix Xij of the cigarette feed liquid by using a formula (1):
attribute values (X ') of each column of the normalized index matrix'1j，X′2j，…，X′5j) Regarding the distribution of the information amount, the information entropy Ej of the chroma index j is calculated by using the formula (2), and the entropy weight coefficient wj of the chroma index j is obtained by the formula (3):
in the formula: wj is more than or equal to 0 and less than or equal to 1,
based on the chromaticity data of the feed liquid for tobacco in table 1, the weighting coefficients w 1-w 3 of 3 chromaticity indexes (L, a, b) calculated by formulas (1), (2) and (3) are as follows: 0.0277, 0.6917, 0.2806.
And (3) calculating the comprehensive variation coefficient of the chromatic value and the stability of the feed liquid for the cigarettes:
on the basis of the calculation results of the 3 chromaticity index variation coefficients and the entropy weight coefficients thereof, the comprehensive variation coefficient CV of the 3 chromaticity indexes of 5 tobacco feed liquid samples of the brand A tobacco feed liquid is obtained by using a formula (4)A(ii) a And finally, calculating the blending uniformity H value of the tobacco shreds by using a formula (5).
H＝(1-CVA)×100％ (5)
The feed liquid stability H values of 5 different time points of the feed liquid for the brand A cigarette in the table 1 are calculated by the formulas (4) and (5) to be 95.03%.
And (3) testing accuracy and precision:
respectively selecting 4 brands of tobacco material liquid samples A1, B1, C1 and D1, respectively sampling each sample for 6 times to perform a colorimetric value parallel determination test, and calculating the standard deviation and the coefficient of variation, wherein the results are shown in Table 2. The coefficient of variation of the results of 6 times of measurement of 3 colorimetric values of the same material liquid sample for the cigarette is between 0.13 and 0.63 percent, which shows that the accuracy of the results of the measurement of the colorimetric values of the tobacco powder is higher by using a color difference meter. In addition, as can be seen from table 2, the colorimetric values of different tobacco feed liquids are obviously different.
TABLE 2 accuracy test of the measurement result of the colorimetric value of the feed liquid for cigarette
The accuracy of the stability of the tobacco feed liquid measured by combining the chroma value with the entropy weight method is tested, and the stability of 6 groups of tobacco feed liquid is respectively tested for each brand of brands A to D, and the result is shown in Table 3. It can be seen that the variation coefficient of the stability of the feed liquid for the brands A to D is between 0.30 and 0.57 percent, which shows that the precision of the method is higher and meets the requirement of quantitative analysis.
TABLE 3 tobacco feed liquid stability precision test results
And (3) repeatability test:
the method is adopted to continuously measure the feed liquid for the cigarettes of brand A for 6 days, the H values are 94.59%, 94.62%, 94.41%, 94.86%, 94.67% and 94.10%, the standard deviation is 0.26%, and the coefficient of variation is 0.28%, which shows that the method has good repeatability and meets the requirement of quantitative analysis.
And (3) carrying out contrast test on the feed liquid and the fermentation feed liquid for normal cigarettes of the same mark:
the stability of the feed liquid was measured by using a colorimetric value-entropy weight method in combination with the normal feed liquid for tobacco and the fermented feed liquid for tobacco of the same brand, and the stability of the feed liquid was measured 6 times for E, F two groups of feed liquids (E is the normal feed liquid and F is the fermented feed liquid) respectively, and the results are shown in table 4. It can be seen that the stability and uniformity of the internal components of the cigarette feed liquid of the same brand are changed due to chemical changes generated by fermentation, the stability standard deviation of the cigarette feed liquid of each group is respectively 0.4 and 0.51, the variation coefficients are respectively 0.004 and 0.012, the calculation results of each group of data are relatively stable, in addition, the stability H% of the cigarette feed liquid is obviously reduced after the cigarette feed liquid is fermented, and the method can be used for identifying the condition of reduced stability in the fermented cigarette feed liquid.
TABLE 4 comparative test results of fermented tobacco feed liquid
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A method for measuring the stability of tobacco feed liquid based on a chromatic value combined with an entropy weight method is characterized by comprising the following steps:
s1, sampling
Sampling once at a secondary ingredient outlet of the tobacco material liquid at set time intervals within any batch of production time, wherein i is a natural number more than or equal to 1, and sampling for i times;
s2 colorimetric value measurement
At room temperature, respectively taking a set amount of the tobacco feed liquid from each sample, respectively placing the tobacco feed liquid into a detection device, and measuring the CIE-L a b color space value of each sample by using a color difference meter: l is from black to white, representing a lightness value, a is from green to red, representing a redness value, b is from blue to yellow, representing a yellowness value;
s3 objective weighting of entropy weight method
Taking 3 chromaticity indexes L, a and b as 3 evaluation indexes at room temperature, and objectively weighting the variation coefficients of the 3 chromaticity indexes by adopting an information entropy principle; respectively weighting the variation coefficient of each colorimetric value of each sample of the cigarette feed liquid subjected to the stability test to obtain the comprehensive variation coefficient of 3 colorimetric indexes;
s4, calculating the coefficient of variation of the chromaticity index
Respectively carrying out colorimetric value test on the preprocessed i samples A1-Ai according to a colorimetric value measuring method to obtain a numerical matrix Xij of 3 colorimetric values of the i samples, and calculating an average value MN of each colorimetric indexj(A1-Ai)Standard deviation SDj(A1-Ai)And coefficient of variation thereof
S5, determining weighting coefficients of different chromatic values by entropy weight method
According to the requirement of entropy weight calculation on data, normalizing index data of each column in the sample colorimetric value matrix Xij by using a formula (1), and enabling attribute values X 'of each column of the normalized index matrix'1j，X′2j，…，X′ijRegarding the distribution of the information amount, the information entropy Ej of the chroma index j is calculated by using formula (2), and the entropy weight coefficient wj of the chroma index j can be obtained by formula (3):
in the formula: wj is more than or equal to 0 and less than or equal to 1,
calculating weight coefficients w 1-w 3 of 3 chromaticity indexes L, a and b through formulas (1), (2) and (3);
s6, calculating the comprehensive variation coefficient of chromatic value and the stability of feed liquid
On the basis of the variation coefficients of 3 chromaticity indexes L, a and b and the entropy weight coefficient calculation result thereof, the comprehensive variation coefficient CV of 3 chromaticity indexes of i samples of the feed liquid for the cigarette is obtained by using a formula (4)ACalculating the blending uniformity H value of the tobacco shreds by using a formula (5);
H＝(1-CVA)×100％ (5)。
2. the method for measuring the stability of the tobacco material liquid based on the combination of the chromatic value and the entropy weight method according to claim 1, wherein samples are respectively placed in a constant temperature and humidity box with the temperature of 20 +/-1 ℃ and the relative humidity of 65 +/-2% for balancing for 48 hours for later use.
3. The method for measuring the stability of the tobacco material liquid based on the combination of the chromatic value and the entropy weight method according to claim 1, wherein the detection device is a quartz rectangular small chamber.
4. The method for measuring stability of tobacco material liquid based on the combination of the chromatic value and the entropy weight method according to claim 3, wherein 3 different positions of the sample in each quartz rectangular cell are selected for measurement, and the color difference meter automatically calculates the average value for 1 time for 3 continuous measurements.
5. The method for measuring the stability of the tobacco feed liquid based on the combination of the chromatic value and the entropy weight method according to claim 1, further comprising accuracy and precision tests, wherein the tobacco feed liquid samples of different brands are respectively selected, the samples are respectively taken for a plurality of times to carry out the parallel measurement of the chromatic value, and whether the standard deviation and the coefficient of variation are within the set range or not is calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010784928.9A CN112067560B (en) | 2020-08-06 | 2020-08-06 | Tobacco material liquid stability determination method based on chromaticity value and entropy weight method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010784928.9A CN112067560B (en) | 2020-08-06 | 2020-08-06 | Tobacco material liquid stability determination method based on chromaticity value and entropy weight method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112067560A true CN112067560A (en) | 2020-12-11 |
| CN112067560B CN112067560B (en) | 2023-11-03 |
Family
ID=73660799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010784928.9A Active CN112067560B (en) | 2020-08-06 | 2020-08-06 | Tobacco material liquid stability determination method based on chromaticity value and entropy weight method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112067560B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113075360A (en) * | 2021-03-18 | 2021-07-06 | 红云红河烟草(集团)有限责任公司 | Method for measuring comprehensive stability of cigarette physical indexes |
| CN113281487A (en) * | 2021-07-01 | 2021-08-20 | 广东韶钢松山股份有限公司 | Method and device for evaluating quality stability of bituminous coal |
| CN113945563A (en) * | 2021-10-19 | 2022-01-18 | 中国烟草总公司湖北省公司 | Method for evaluating quality uniformity of cigar wrapper tobacco leaves |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103577888A (en) * | 2013-09-05 | 2014-02-12 | 西安电子科技大学 | Improved entropy weight AHP and application thereof |
| CN104899424A (en) * | 2015-05-07 | 2015-09-09 | 中国烟草总公司郑州烟草研究院 | Microscopic feature based method for objectively testing ripeness and leaf structure of flue-cured tobacco leaves |
| WO2015151023A1 (en) * | 2014-04-01 | 2015-10-08 | H&D S.R.L. | Method for the diagnostic determination of the risk caused by an altered oxidative balance |
| CN107588788A (en) * | 2017-08-29 | 2018-01-16 | 北京航空航天大学 | Optical fiber and smart coat data fusion implementation method based on entropy weight step analysis |
| CN107909264A (en) * | 2017-11-14 | 2018-04-13 | 江苏中烟工业有限责任公司 | The objective integrated evaluating method of stability between a kind of tobacco style feature year |
| CN108764636A (en) * | 2018-04-24 | 2018-11-06 | 上海理工大学 | Numerically-controlled machine tool Evaluation of Sustainability method based on Life cycle |
| CN108828139A (en) * | 2018-04-25 | 2018-11-16 | 云南中烟工业有限责任公司 | A kind of essence spice for cigarette evaluation method |
| WO2019149147A1 (en) * | 2018-01-30 | 2019-08-08 | 中国矿业大学 | Method for dividing ecological and geological environment types based on coal resource development |
| CN110826025A (en) * | 2019-11-25 | 2020-02-21 | 佳格食品(中国)有限公司 | Method for optimizing performance of blending oil by using response surface method and matrix method |
| CN111307724A (en) * | 2020-03-03 | 2020-06-19 | 红云红河烟草(集团)有限责任公司 | Method for establishing model for determining cut stem content in cut tobacco based on color difference method |
-
2020
- 2020-08-06 CN CN202010784928.9A patent/CN112067560B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103577888A (en) * | 2013-09-05 | 2014-02-12 | 西安电子科技大学 | Improved entropy weight AHP and application thereof |
| WO2015151023A1 (en) * | 2014-04-01 | 2015-10-08 | H&D S.R.L. | Method for the diagnostic determination of the risk caused by an altered oxidative balance |
| CN104899424A (en) * | 2015-05-07 | 2015-09-09 | 中国烟草总公司郑州烟草研究院 | Microscopic feature based method for objectively testing ripeness and leaf structure of flue-cured tobacco leaves |
| CN107588788A (en) * | 2017-08-29 | 2018-01-16 | 北京航空航天大学 | Optical fiber and smart coat data fusion implementation method based on entropy weight step analysis |
| CN107909264A (en) * | 2017-11-14 | 2018-04-13 | 江苏中烟工业有限责任公司 | The objective integrated evaluating method of stability between a kind of tobacco style feature year |
| WO2019149147A1 (en) * | 2018-01-30 | 2019-08-08 | 中国矿业大学 | Method for dividing ecological and geological environment types based on coal resource development |
| CN108764636A (en) * | 2018-04-24 | 2018-11-06 | 上海理工大学 | Numerically-controlled machine tool Evaluation of Sustainability method based on Life cycle |
| CN108828139A (en) * | 2018-04-25 | 2018-11-16 | 云南中烟工业有限责任公司 | A kind of essence spice for cigarette evaluation method |
| CN110826025A (en) * | 2019-11-25 | 2020-02-21 | 佳格食品(中国)有限公司 | Method for optimizing performance of blending oil by using response surface method and matrix method |
| CN111307724A (en) * | 2020-03-03 | 2020-06-19 | 红云红河烟草(集团)有限责任公司 | Method for establishing model for determining cut stem content in cut tobacco based on color difference method |
Non-Patent Citations (2)
| Title |
|---|
| 张天云;陈奎;王秀丽;谷莉: "基于改进熵权法确定工程材料评价指标的客观权重", 机械工程材料, vol. 36, no. 3 * |
| 陈贤;赵雁;龚元圣;: "熵权法在番茄果实商品性状评价上的应用分析", 湖北农业科学, no. 11 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113075360A (en) * | 2021-03-18 | 2021-07-06 | 红云红河烟草(集团)有限责任公司 | Method for measuring comprehensive stability of cigarette physical indexes |
| CN113281487A (en) * | 2021-07-01 | 2021-08-20 | 广东韶钢松山股份有限公司 | Method and device for evaluating quality stability of bituminous coal |
| CN113945563A (en) * | 2021-10-19 | 2022-01-18 | 中国烟草总公司湖北省公司 | Method for evaluating quality uniformity of cigar wrapper tobacco leaves |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112067560B (en) | 2023-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112067560B (en) | Tobacco material liquid stability determination method based on chromaticity value and entropy weight method | |
| CN111721715B (en) | Tobacco shred blending uniformity measuring method based on combination of chromaticity value and entropy weight method | |
| CN111307724B (en) | Method for establishing model for determining cut stem content in cut tobacco based on color difference method | |
| CN102798596A (en) | Method for evaluating quality stability of redried finished sheet tobacco | |
| CN103575689A (en) | Method for rapidly detecting amylose content in rice by near infrared spectrum and visible light analyzer | |
| CN108459126A (en) | Internal standard curve method calculates the uncertainty evaluation method of Polychlorinated biphenyls content detection result in aquatic products | |
| CN104899424A (en) | Microscopic feature based method for objectively testing ripeness and leaf structure of flue-cured tobacco leaves | |
| CN106770014A (en) | A kind of near infrared spectrum detection method of rice freshness | |
| CN109540837A (en) | The method that near-infrared quickly detects Boehmeria nivea leaves wood fibre cellulose content | |
| CN111289444B (en) | Method for determining cut stem content in cut tobacco based on color difference method | |
| CN110412026B (en) | Method for rapidly testing preparation accuracy of tobacco flavor | |
| CN107314986A (en) | A kind of method that utilization near infrared spectrum detects rape stem soluble sugar content | |
| CN108955837A (en) | A kind of determination method and its application of mass flowmenter on-line system error | |
| CN108680671A (en) | Single-point quantifies the assessment method of Polychlorinated biphenyls content detection result uncertainty in aquatic products | |
| CN110514600A (en) | A kind of measuring method of MTO catalyst carbon content | |
| CN106644807B (en) | It is a kind of for measuring the model and method of black and white Huang block song ratio in yeast | |
| CN102213674A (en) | Method for detecting lime substances in flour by near infrared spectroscopy | |
| CN109711705A (en) | The method for establishing model of color aesthetic quality control in a kind of fermentation milk production | |
| CN1712937A (en) | Nondestructive rapid detection for contents of multiple element components in composite fertilizer | |
| CN114199814B (en) | Regression coefficient-based near infrared quantitative analysis model updating method | |
| CN219647525U (en) | Sedimentation tube | |
| RU2752308C1 (en) | Method for controlling the conditionality of liquid petroleum products | |
| Koryakov et al. | Development of standard samples of mass fractions of moisture and protein in grain and grain products | |
| CN118044636A (en) | Regulation and control method for improving sensory quality stability of finished sheet tobacco with module formula | |
| CN113655025A (en) | Method for rapidly and nondestructively detecting quality of rice seeds based on near infrared spectrum technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |