CN110108671B - Calculation method for prolonging service life of international grading material object standard of light yellow dyed cotton - Google Patents

Calculation method for prolonging service life of international grading material object standard of light yellow dyed cotton Download PDF

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CN110108671B
CN110108671B CN201910383113.7A CN201910383113A CN110108671B CN 110108671 B CN110108671 B CN 110108671B CN 201910383113 A CN201910383113 A CN 201910383113A CN 110108671 B CN110108671 B CN 110108671B
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连素梅
刘俊
傅科杰
李朋
牛增元
李岩
王铭
任亮
郝东生
郑烨
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Inspection And Quarantine Testing Center Of Hebei Entry-Exit Inspection And Quarantine Bureau
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Abstract

The invention provides a calculation method for prolonging the service life of international grading material object standard of light yellow dyed cotton, which comprises the following steps: s1, determining the reflectivity Rd and the yellow depth + b of the international grading material object standard of the light yellow dyed cotton in the first year, S2, and mixing the RdFirst stageValue or + bFirst stageThe values are respectively used as Y values to be substituted into a formula to calculate the Y values corresponding to the future years, wherein the Y values are the Rd values or the + b values of the future years corresponding to the feature levels of the light yellow dyed cotton; and S3, judging whether the light yellow dyed cotton international cotton classification object standard is used continuously through the Rd value and the + b value of each year in the future. According to the method, the change rule of the international cotton classification physical standard of the light yellow dyed cotton is summarized in a formula mode, and the color characteristic grade of the physical standard in each year can be calculated through the formula, so that the method is more accurately used, and the detection result is ensured to be accurate; meanwhile, the validity of the material object standard can be quantitatively judged, and the resource waste caused by one-time complete replacement is avoided, so that the resource waste is reduced, and the expenditure is saved.

Description

Calculation method for prolonging service life of international grading material object standard of light yellow dyed cotton
Technical Field
The invention relates to the technical field of entry and exit cotton detection, in particular to a calculation method for prolonging the service life of international grading material object standard of light yellow dyed cotton.
Background
The international cotton grading general physical standard has the validity period of one year, the service life of the international cotton grading general physical standard is changed after one year, but not all physical standards can not be used, so that resource waste and economic loss are caused by one-time complete change, and serious loss is brought to the country.
In addition, the humidity and the room temperature of cotton grade experiments distributed in various places of China are greatly different, standard substances are placed in natural environments in various laboratories, the standard substances are inevitably changed to different degrees under different environmental conditions, and the phenomenon that the detection results of different laboratories are inconsistent is inevitably brought about by the change of the standard substances to different degrees. Over the years, along with the expansion of the cotton trade range in China, the condition that the inspection and quarantine mechanisms in different regions have inconsistent inspection results of the same batch of imported cotton is very common, and disputes between domestic and foreign trade parties are caused, so that trade disputes are caused, and the fairness and the accuracy of the inspection and quarantine mechanisms are questioned, and great negative effects are brought.
Disclosure of Invention
In view of the above, the present invention is directed to a method for calculating a lifetime of an international classification physical standard for light yellow dyed cotton, so as to reduce the number of times of replacing the international general physical standard for light yellow dyed cotton, thereby prolonging the lifetime of the international classification physical standard for light yellow dyed cotton.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a calculation method for prolonging service life of international grading physical standard of light yellow dyed cotton comprises the steps of independently customizing service life of each grade of international grading physical standard of light yellow dyed cotton, and independently replacing the standard if the standard reaches the service life, wherein the specific steps comprise:
s1, storing the light yellow dyeing cotton international cotton classification object standard at constant temperature and humidity, and performing HVI test on the light yellow dyeing cotton international cotton classification object standard in the first year to determine the reflectivity Rd and the yellow depth + b of the light yellow dyeing cotton international cotton classification object standard in the first year, and respectively recording the reflectivity Rd and the yellow depth + b as the RdFirst stageValue sum + bFirst stageThe value is obtained.
S2, will + bFirst stageThe value is introduced as the Y value into the yellow depth formula Y ═ a1X5+a2X4+a3X3+a4X2+a5In X + m, wherein X is year, a1、a2、a3、a4、a5Respectively calculating fixed values corresponding to different color characteristic levels of the light yellow dyed cotton, and substituting the m values into a formula to calculate Y values corresponding to the next years, wherein the Y values are + b values of the next years corresponding to the different color characteristic levels of the light yellow dyed cotton;
s3, converting RdFirst stageSubstituting the value as Y value into the formula Y ═ b1X5+b2X4+b3X3+b4X2+b5In X + n, wherein X is year, b1、b2、b3、b4、b5Respectively calculating fixed values corresponding to different color characteristic levels of the light yellow dyed cotton, and substituting the n values into a formula to calculate Y values corresponding to the next years, wherein the Y values are Rd values of the next years corresponding to the different color characteristic levels of the light yellow dyed cotton;
and S4, judging whether the light yellow dyed cotton international cotton classification object standard is continuously used or replaced according to the Rd value and the + b value of each year in the future.
Further, the specific step of step S3 is:
and respectively finding out position points corresponding to the Rd value and the + b value on the ordinate and the abscissa of the cotton color characterization diagram according to the obtained Rd value or the + b value, if the position points do not exceed the specified area of the position points on the cotton color characterization diagram, continuing to use the grade standard, and if the position points exceed the specified area of the position points on the cotton color characterization diagram, judging that the grade standard is invalid and is not used any more.
Further, in step S1, the constant temperature and humidity environment is at a temperature of 20 ± 1 ℃ and a humidity of 65 ± 2 Rh%.
Further, the service life of the international grading material object standard of the light yellow dyed cotton is less than or equal to 7 years.
Compared with the prior art, the invention has the following advantages:
according to the calculation method for prolonging the service life of the international graded material object standard of the light yellow dyed cotton, the standards at all levels are replaced independently instead of being uniformly specified for all replacement in one year, so that the service time is prolonged, and the resource waste caused by all replacement at one time is avoided, so that the resource waste is reduced, and the expenditure is saved; the method for judging whether the service life is reached by adopting the Rd value and the + b value can reduce manual judgment errors and ensure the judgment accuracy, the Rd value and the + b value in the future year are directly obtained through formula calculation, the effectiveness of the physical standard can be quantitatively judged, the detection result is accurate, meanwhile, HVI test on the physical standard every year is not needed, the fussy test steps are reduced, and the working efficiency is improved.
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The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a representation of the color of cotton of the United states upland field according to an embodiment of the present invention;
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The embodiment relates to a calculation method for prolonging the service life of international grading material object standard of light yellow dyed cotton, which comprises the following steps: and (4) independently customizing the service life of each level of international universal cotton physical standard, and if the level of international universal cotton physical standard reaches the service life, independently replacing the standard. According to the calculation method for prolonging the service life of the international graded material object standard of the light yellow dyed cotton, disclosed by the invention, the standards at all levels are replaced independently instead of being uniformly specified for all replacement in one year, so that the service time is prolonged, the resource waste caused by all replacement at one time is avoided, the resource waste is reduced, and the expenditure is saved.
In the above description, the specific steps include:
s1, storing the light yellow dyeing cotton class international cotton class grading material object standard at a constant temperature and humidity with the temperature of 20 +/-1 ℃ and the humidity of 65 +/-2 Rh%, and performing HVI test on the light yellow dyeing cotton class international cotton class grading material object standard in the first year to determine the reflectivity Rd and the yellow depth + b of the light yellow dyeing cotton class international cotton class grading material object standard in the first year, and respectively recording the reflectivity Rd and the yellow depth + b as the RdFirst stageValue sum + bFirst stageThe value is obtained.
S2, will + bFirst stageThe value is introduced as the Y value into the yellow depth formula Y ═ a1X5+a2X4+a3X3+a4X2+a5In X + m, wherein X is year, a1、a2、a3、a4、a5Respectively calculating fixed values corresponding to different color characteristic levels of the light yellow dyed cotton, and then substituting the m values into a formula to calculate Y values corresponding to the next years, wherein the Y values are + b values of the next years corresponding to the different color characteristic levels of the light yellow dyed cotton.
S3, converting RdFirst stageSubstituting the value as Y value into the formula Y ═ b1X5+b2X4+b3X3+b4X2+b5In X + n, wherein X is year, b1、b2、b3、b4、b5Respectively calculating fixed values corresponding to different color characteristic levels of the light yellow dyed cotton, and then substituting the n values into a formula to calculate a Y value corresponding to each future year, wherein the Y value is the Rd value of each future year corresponding to each color characteristic level of the light yellow dyed cotton.
S4, judging whether the light yellow dyed cotton international cotton classification object standard is continuously used or replaced according to the Rd value and the + b value of each year in the future, wherein the steps specifically comprise: and respectively finding out position points corresponding to the Rd value and the + b value on the ordinate and the abscissa of the cotton color characterization diagram according to the obtained Rd value or the + b value, if the position points do not exceed the specified area of the position points on the cotton color characterization diagram, continuing to use the grade standard, and if the position points exceed the specified area of the position points on the cotton color characterization diagram, judging that the grade standard is invalid and is not used any more.
The international general cotton grading physical standard mainly comprises upland cotton and pima cotton, and because the imported pima cotton is few, the utilization rate of the pima cotton standard is low, and the international general cotton grading physical standard of the upland cotton is most commonly used. The grading physical standard of the upland cotton mainly comprises 15 box physical standards of 3 types of white cotton, spotted-dirty cotton and light yellow dyed cotton, and the rest are character standards. The white cotton physical standard comprises 7 boxes of color characterization grades of GM, SM, M, SLM, LM, SGO and GO, the spot-contaminated cotton physical standard comprises 5 boxes of color characterization grades of SM.SP, M.SP, SLM.SP, LM.SP and SGO.SP, and the light yellow dyeing physical standard comprises 3 boxes of color characterization grades of SM.TG, M.TG and LM.TG. Based on the above description, the present embodiment is described in detail by taking light yellow cotton (tied) as an example, and the above samples are selected to be representative and cover the main light yellow cotton grade standard type.
In the international universal cotton physical standard, in three boxes of color characterization levels M.TG, SLM.TG and LM.TG of a light yellow dyed cotton physical standard, wherein each box of color characterization levels comprises six samples with different producing areas, which are numbered in sequence as follows: the serial numbers of six samples in the M.TG box color characterization stage are respectively 34-1, 34-2, 34-3, 34-4, 34-5 and 34-6; the serial numbers of six samples in the SLM-TG box color characterization stage are respectively 44-1, 44-2, 44-3, 44-4, 44-5 and 44-6; the numbers of six samples in the LM.TG box color characterization stage are respectively 54-1, 54-2, 54-3, 54-4, 54-5 and 54-6;
TABLE 1 yellow depth test data for light yellow dyed cotton standard samples
Figure BDA0002053988480000051
Table 2 light yellow dyed cotton standard sample reflectivity test data
Figure BDA0002053988480000052
Figure BDA0002053988480000061
TABLE 3 yellow depth and reflectance calculation formula for light yellow dyed cotton standard sample
Figure BDA0002053988480000062
Table 1 and table 2 show yellow depth test data and reflectance test data of a light yellow dyed cotton standard sample, respectively, table 3 shows yellow depth and reflectance calculation formulas of six samples of each box color feature level of light yellow dyed cotton, and step S2 is described in detail below with reference to table 1 to table 3 and international general cotton standards for light yellow dyed cotton purchased in 2011.
For example, the yellow depth of light yellow dyed cotton M.TG 34-1 + b in the calculation formula1＝0.00004、a2＝-0.0013、a3＝0.0115、a4＝-0.0246、a50.0102, substituting the formula to obtain the yellow depth calculation formula of y 0.00004x5-0.0013x4+0.0115x3-0.0246x2+0.0102x + m, yellow depth of slightly yellow dyed cotton M.TG 34-1 purchased just in 2011 measured + bFirst stageThe value is 12.52, X is 1, the formula is substituted to obtain m is 12.5242, (m is rounded off to reserve four decimal places, the same applies below), namely, the formula for calculating the yellow depth of the X in the future year of light yellow dyed cotton M.TG 34-1 is that y is 0.00004X5-0.0013x4+0.0115x3-0.0246x2+0.0102X +12.5242, 2 is less than or equal to X. The yellow depth value of the light yellow dyed cotton M.TG 34-1 in each future year is calculated by the formula and is shown in table 4 (the numerical values calculated by the formula are all reserved with two decimal points by adopting a rounding method, the same is shown below) and is calculated by the formula and is shown in table 4It can be seen that the yellow depth value calculated by the formula is equal to the HVI test value, and the following result of determining whether to continue using is identical to the HVI test data, and the same process can be performed.
TABLE 4 light yellow-dyed cotton M.TG 34-1 comparison of future year yellow depth data calculated from formula to HVI test value
Figure BDA0002053988480000071
In the calculation formula of the M.TG 34-1 reflectivity of light yellow dyed cotton, b1＝-0.0002、b2＝0.0036、b3＝-0.0295、b4＝0.1125、b5The reflectance calculation formula is given by-0.0002 x, where y is-0.36435+0.0036x4-0.0295x3+0.1125x2-0.3643x + n, measured for the reflectance Rb of M.TG 34-1, a pale yellow cotton purchased just in 2011First stageThe value is 67.23, X is 1, and the formula is substituted into n is 67.5079, i.e. the X reflectance of light yellow dyed cotton m.tg 34-1 in the coming years is calculated as y is-0.0002X5+0.0036x4-0.0295x3+0.1125x2-0.3643X +67.5079, 2 ≦ X. The yellow depth value of light yellow dyed cotton M.TG 34-1 in each future year calculated by the formula is shown in table 5, and it can be known from table 5 that the reflectivity calculated by the formula is equal or approximately equal to the HVI test value, and the result of judging whether to continue using is completely the same as the judgment result of HVI test data, and the equivalent treatment can be carried out.
TABLE 5 light yellow-dyed cotton M.TG 34-1 the reflectance data for the future year calculated from the formula is compared with the HVI test value
Figure BDA0002053988480000072
Figure BDA0002053988480000081
Yellow depth of light yellow dyed cotton SLM.TG44-1+ b is the formula1＝0.00042、a2＝-0.0082、a3＝0.0555、a4＝-0.12、a50.0959, substituting the formula to obtain the yellow depth calculation formula of y 0.00042x5-0.0082x4+0.0555x3-0.12x2+0.0959x + m, measured on light yellow dyed cotton slm purchased just 2011 tg44-1 yellow depth + bFirst stageThe value is 12.22, X is 1, and the formula is substituted into m is 12.1964, i.e. the formula for X yellow depth in light yellow dyed cotton slm, tg44-1, is 0.00042X5-0.0082x4+0.0555x3-0.12x2+0.0959X +12.1964, 2 is less than or equal to X. The yellow depth value of light yellow dyed cotton SLM.TG44-1 in the next year calculated by the formula is shown in table 6, and it can be known from table 6 that the yellow depth value calculated by the formula is approximately equal to the HVI test value, and the result of judging whether to continue using is completely the same as the judgment result of HVI test data, and the same treatment can be carried out.
TABLE 6 light yellow-dyed cotton SLM.TG44-1 comparison of future year yellow depth data calculated from formula to HVI test value
Figure BDA0002053988480000082
In the calculation formula of the reflectivity Rd of light yellow dyed cotton SLM.TG44-1, b1＝0.00025、b2＝-0.0048、b3＝0.0318、b4＝-0.0808、b5Substituting the formula to obtain the yellow color depth with the formula of y being 0.00025x5-0.0048x4+0.0318x3-0.0808x20.0176x + n, SLM.TG44-1 reflectance Rd of light yellow dyed cotton purchased just in 2011First stageThe value is 63.08, X is 1, and the formula is substituted by n is 63.1512, i.e. the formula for X reflectance is 0.00025X for the calculation of X reflectance in light yellow dyed cotton slm.tg44-1 in the future year5-0.0048x4+0.0318x3-0.0808x2-0.0176X +63.1512, 2 ≦ X. The yellow depth value of light yellow dyed cotton SLM.TG44-1 in the next year calculated by the formula is shown in table 7, and the yellow depth value calculated by the formula is equal to the HVI test value or equal to the HVI test value shown in table 7The results are approximately equal, and the results of determining whether to continue using are completely the same as the results of determining the HVI test data, and equivalent processing can be performed.
TABLE 7 light yellow dyed cotton SLM.TG44-1 the future year reflectance data calculated from the formula is compared to the HVI test value
Figure BDA0002053988480000091
For example, the yellow depth of light yellow dyed cotton LM.TG54-1 + b in the calculation formula1＝＝0.00024、a2＝-0.0052、a3＝0.0391、a4＝-0.1125、a5Substituting the formula to obtain the yellow depth, and calculating the formula that y is 0.00024x5-0.0052x4+0.0391x3-0.1125x2+0.143x + m, LM.TG.Tg54-1 yellow depth + b as measured and purchased just in 2011First stageThe value is 11.40, X is 1, and the formula is substituted into m is 11.3354, i.e. the formula for calculating the X yellow depth in the light yellow dyed cotton lm.tg54-1 future year is y is 0.00024X5-0.0052x4+0.0391x3-0.1125x2+0.143X +11.3354, 2. ltoreq.X. The yellow depth value of light yellow dyed cotton LM.TG54-1 in the next year calculated by the formula is shown in table 8, and it can be known from table 8 that the yellow depth value calculated by the formula is equal to the HVI test value, and the result of judging whether to continue using is completely the same as the judgment result of HVI test data, and the equivalent treatment can be carried out.
TABLE 8 light yellow-dyed cotton LM.TG54-1 comparison of future year yellow depth data calculated from formula to HVI test value
Figure BDA0002053988480000092
In the formula for calculating the reflectivity of light yellow dyed cotton LM.TG54-1, b1＝0.00012、b2＝-0.0021、b3＝0.0108、b4＝-0.0058、b5-0.1314, substituting the formula to obtain the reflectance calculation formula of y-0.00012 x5-0.0021x4+0.0108x3-0.0058x2-0.1314x + n, measured for the reflectance Rb of light yellow dyed cotton LM.TG54-1, purchased just in 2011First stageThe value is 58.45, X is 1, and the formula is substituted into n is 58.5784, i.e. the formula for calculating X reflectance in light yellow dyed cotton lm.tg54-1 in the future is y is 0.00012X5-0.0021x4+0.0108x3-0.0058x2-0.1314X +58.5784, 2 ≦ X. The yellow depth value of light yellow dyed cotton LM.TG54-1 calculated by the formula in the next year is shown in table 9, the reflectivity calculated by the formula is equal or approximately equal to the HVI test value, and the result of judging whether to continue using is completely the same as the judgment result of HVI test data in the following, so that the equivalent treatment can be carried out.
TABLE 9 light yellow-dyed cotton LM.TG54-1 the future year reflectance data calculated from the formula is compared with the HVI test value
Figure BDA0002053988480000101
The above description is made by taking the light yellow dyed cotton purchased just in 2011 as an example and taking the light yellow dyed cotton m.tg 34-1, slm.tg44-1 and lm.tg54-1 as examples, the determination steps of the m value and the n value of the yellow depth and the reflectivity of each characteristic level of the light yellow dyed cotton are described, the determination methods of the m value and the n value of other characteristic levels of the light yellow dyed cotton are the same as those described above, and the detailed description is omitted here, and table 10 gives the calculation formula obtained by the method based on the spotted cotton purchased in 2011 and the formula given in table 3.
TABLE 102011 year light yellow cotton international cotton matter standard color characteristic level yellow depth and reflectivity calculation formula
Figure BDA0002053988480000102
Figure BDA0002053988480000111
How step S3 determines whether to continue using or replace the light yellow cotton class international cotton grading material object standard according to the Rd value and the + b value will be described in detail with reference to tables 1 to 3 and fig. 1.
The corresponding area of the light yellow dyed cotton (TINGED) on the cotton color map is a TINGED area, and M.TG, SLM.TG and LM.TG respectively correspond to TINGED-M, TINGED-SLM and TINGED-LM. For example, the reflectivity and yellow depth HVI test data of light yellow dyed cotton M.TG 34-1 in 2011 are respectively (67.23, 12.52), and the cross point of the light yellow dyed cotton M.TG 34-1 in figure 1 (the ordinate is the reflectivity Rd and the abscissa is the yellow depth + b) is positioned in a TINGED-M.TG area, so that the light yellow dyed cotton M.TG can be continuously used as required; the reflectivity and the yellow depth of the light yellow dyed cotton M.TG 34-1 calculated by the formula in 2012 to 2017 are respectively (67.04, 12.52), (66.87, 12.55), (66.68, 12.62), (66.44, 12.71), (66.11, 12.81), (65.63, 12.89), and the cross points of the light yellow dyed cotton M.TG 34-1 in the figure 1 are all located in a TINGED-M region, so that the light yellow dyed cotton can be continuously used as required.
For example, the reflectivity and yellow depth HVI test data of light yellow dyed cotton SLM-TG 44-1 in 2011 are respectively (63.08, 12.22), and the cross point of the test data in FIG. 1 is located in a TINGED-SLM region, so that the test data meets the requirement for continuous use; the calculated data of the reflectivity and yellow depth formula of light yellow dyed cotton slm.tg44-1 in 2012 to 2017 are (62.98, 12.23) (62.90,12.34), (62.85,12.54), (62.80,12.80), (62.73, 13.08), (62.65, 13.39), and the cross points in fig. 1 are all located in the TINGED-SLM area, so that the light yellow dyed cotton SLM is required to be used continuously.
For example, the reflectivity and yellow depth HVI test data of light yellow dyed cotton LM.TG54-1 in 2011 are respectively (58.45, 11.40), and the cross point of the test data in the figure 1 is located in a TINGED-LM area, so that the test data meets the requirement for continuous use; the calculated data of the reflectivity and the yellow depth formula of the light yellow dyed cotton LM.TG54-1 in 2012 to 2017 are respectively (58.35, 11.41) (58.28,11.44), (58.24,11.52), (58.19,11.63), (58.13, 11.72), (58.05, 11.78), and the cross points of the calculated data in the figure 1 are all located in a TINGED-LM area, so that the calculated data meets the requirements and is continuously used.
When how to judge whether the light yellow dyeing cotton international cotton grading material object standard is continuously used or replaced according to the Rd value and the + b value in the step S3, the calculated data of partial yellow depth and reflectivity obtained by the formula are partially approximately equal to the HVI test data, and in order to ensure the accuracy of the formula, the HVI test data is verified again.
The reflectivity and the yellow depth of light yellow dyed cotton LM.TG 34-1 obtained by HVI test data in 2012 to 2017 are respectively (67.04, 12.52), (66.89, 12.55), (66.69, 12.63), (66.53, 12.74), (66.32, 12.88), (66.11, 13.02), the cross points of the light yellow dyed cotton LM.TG 34-1 in the graph 1 are all located in a TINGED-LM area, the requirement of continuous use is met, and the conclusion of the service life of the light yellow dyed cotton LM.TG 34-1 calculated by a formula is completely the same, so that the formula meets the use requirement.
The reflectivity and yellow depth HVI test data of the light yellow cotton slm.tg44-1 obtained from the HVI test data in 2012 to 2017 are respectively (62.98, 12.24), (62.90,12.33), (62.86,12.56), (62.81,12.79), (62.76, 13.08), (62.71, 13.38), the cross points of which in fig. 1 are all located in the TINGED-SLM area, which is identical to the conclusion of the service life of the light yellow cotton slm.tg44-1 calculated by the formula, thus the formula can be seen to meet the use requirement.
The reflectivity and yellow depth HVI test data of light yellow dyed cotton lm.tg54-1 obtained from HVI test data in 2012 to 2017 are respectively (58.35, 11.41) (58.28,11.44), (58.24,11.53), (58.19,11.63), (58.14, 11.75), (58.09, 11.87), the cross points in fig. 1 are all located in the zone of TINGED-LM, which is identical to the conclusion of the service life of light yellow dyed cotton lm.tg54-1 calculated by the formula, thus it can be seen that the formula meets the use requirement.
Meanwhile, the service life of each international classification real object feature level standard of the light yellow dyeing cotton is different from that of each international classification real object, and the uncertainty of each feature level reflectivity and yellow depth change rule of the light yellow dyeing cotton is high after seven years, so that the service life of each international classification real object standard of each light yellow dyeing cotton is less than or equal to 7 years.
According to the calculation method for prolonging the service life of the international graded material object standard of the light yellow dyed cotton, the standards at all levels are replaced independently instead of being uniformly specified for all replacement in one year, so that the service time is prolonged, and the resource waste caused by all replacement at one time is avoided, so that the resource waste is reduced, and the expenditure is saved; the method for judging whether the service life is reached by adopting the Rd value and the + b value can reduce manual judgment errors and ensure the judgment accuracy, the Rd value and the + b value in the future year are directly obtained through formula calculation, the effectiveness of the physical standard can be quantitatively judged, the detection result is accurate, meanwhile, HVI test on the physical standard every year is not needed, the fussy test steps are reduced, and the working efficiency is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (3)

1. A calculation method for prolonging service life of international grading physical standard of light yellow dyed cotton is characterized in that the method comprises the steps of independently customizing service life of each grade of standard of the international grading physical standard of light yellow dyed cotton, and independently replacing the standard if the standard reaches the service life, and the specific steps comprise:
s1, storing the light yellow dyeing cotton international cotton classification object standard at constant temperature and humidity, and performing HVI test on the light yellow dyeing cotton international cotton classification object standard in the first year to determine the reflectivity Rd and the yellow depth + b of the light yellow dyeing cotton international cotton classification object standard in the first year, and respectively recording the reflectivity Rd and the yellow depth + b as the RdFirst stageValue sum + bFirst stageA value;
s2, will + bFirst stageSubstituting the value as Y value into the yellow depth formula Y = a1X5+a2X4+a3X3+a4X2+a5In X + m, wherein X is year, a1、a2、a3、a4、a5Respectively calculating fixed values corresponding to cotton of different color characteristic levels in the light yellow dyed cotton and cotton of different producing areas of the same color characteristic level to obtain m values, and substituting the m values into a formula to calculate Y values corresponding to the future years, wherein the Y values are + b values of the future years corresponding to the characteristic levels of the light yellow dyed cotton;
s3, converting RdFirst stageSubstituting the value as Y value into the formula Y = b1X5+b2X4+b3X3+b4X2+b5In X + n, wherein X is year, b1、b2、b3、b4、b5Respectively calculating fixed values corresponding to cotton of different color characteristic levels in the light yellow dyed cotton class and cotton of different producing areas of the same color characteristic level to obtain n values, and substituting the n values into a formula to calculate Y values corresponding to each future year, wherein the Y values are Rd values of each future year corresponding to each color characteristic level of the light yellow dyed cotton class;
s4, judging whether the light yellow dyed cotton international cotton classification object standard is continuously used or replaced according to the Rd value and the + b value of each year in the future; and respectively finding out position points corresponding to the Rd value and the + b value on the ordinate and the abscissa of the cotton color characterization diagram according to the obtained Rd value or the + b value, if the position points do not exceed the specified area of the position points on the cotton color characterization diagram, continuing to use the grade standard, and if the position points exceed the specified area of the position points on the cotton color characterization diagram, judging that the grade standard is invalid and is not used any more.
2. The method for calculating the service life of the international classification material object of the extended light yellow dyeing cotton according to claim 1, characterized in that: in step S1, the constant temperature and humidity environment is at 20 + -1 deg.C and 65 + -2 Rh%.
3. The method for calculating the service life of the international grading material object standard of light yellow dyeing cotton according to claim 1 or 2, which is characterized by comprising the following steps: the standard service life of the international grading material object of the light yellow dyed cotton is less than or equal to 7 years.
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