A standard plate for orange peel gauge calibration and a value traceable setting method thereof

Abstract

The present application belongs to the technical field of orange peel gauge calibration, and discloses a standard plate for orange peel gauge calibration and a value traceability and setting method thereof. The designed standard plate has an accurate and mathematically describable topography, and the topography parameters are calibrated based on SI units by a white light interferometer or other precise profile instruments, and are directly traced to the national length reference. On this basis, the present application defines a value traceability and setting method of the standard plate. If the filtering and mapping method of the orange peel gauge to be calibrated is known, the theoretical orange peel value can be directly calculated through the topography calibration result of the standard plate. If the algorithm is not disclosed, the standard plate can still realize independent traceability and calibration through the slope original data. The present application realizes independent traceability, reproducibility and quantitative evaluation of orange peel gauge calibration for the first time, and provides a unified metrological standard for the field of coating surface topography measurement.

Description

Technical Field

[0001] This invention belongs to the field of orange peel meter calibration technology, specifically relating to a standard plate for orange peel meter calibration and its measurement traceability and value determination method. Background Technology

[0002] In industries such as automotive, home appliances, and consumer electronics, the "orange peel" effect on coating surfaces is a key indicator affecting product appearance quality. The orange peel effect is essentially determined by minute morphological variations on the coating surface. For uniform coatings (such as common automotive paint), the refractive index of the material itself is basically the same at different locations; therefore, the visual differences in orange peel primarily originate from the geometric features of the surface morphology, rather than changes in the material's optical properties. The industry commonly uses orange peel analyzers for quantitative evaluation. These instruments typically divide the slope signal of the surface morphology into several bands according to spatial wavelength: for example, BYK's wave-scan series instruments use D... u (≤ 0.1 mm), W a (0.1mm~0.3mm), W b (0.3mm~1 mm), W c (1mm~3 mm), W d (3mm~10 mm), W e The grading method is (10mm~30mm); while Rhopoint's products use T (≤ 0.1 mm), T a (0.1~0.3mm), T b (0.3~1 mm), T c (1~3 mm), T d (3~10 mm), T e (10~30 mm) Correspondingly, we refer to these parameters as orange peel measurement values.

[0003] However, current commercial orange peel analyzers generally employ closed measurement and signal processing architectures, with their internal algorithms or measurement methods not publicly disclosed. Furthermore, measurement results from different devices often exhibit systematic differences, making it difficult to reproduce and verify their outputs through independent, traceable physical measurements. It's worth noting that commercially available orange peel analyzers typically come with standard boards for routine performance checks. These standard boards are generally obtained by controlling processing techniques (such as specific grinding or spraying parameters), resulting in surface morphology that is often a non-precisely controlled random or semi-random profile, and their values ​​are assigned based on the device's own measurement readings. In other words, the values ​​of such standard boards are highly dependent on the internal algorithms and measurement repeatability of the same or similar instrument, and cannot be reproduced and verified through metrological methods independent of the device and traceable to SI units. Therefore, while they can be used for routine stability checks of the device, they are insufficient to serve as a "reference standard" in metrological value transfer. Currently, there are no formal calibration systems or metrological technical specifications for orange peel analyzers, both domestically and internationally, further exacerbating the difficulties in metrological value traceability. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a standard plate for the calibration of an orange peel meter and a method for tracing and determining the measurement value, so as to solve the problem of non-traceability of existing orange peel meter measurement calibration.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: On the one hand, a standard plate for calibrating an orange peel meter is provided, characterized in that it includes a plate body with a smooth surface, the plate body having a surface morphology suitable for orange peel meter measurement, the surface morphology having morphology parameters obtained by a precision instrument for measuring the surface morphology based on SI units; The surface morphology is a sinusoidal morphology, and the expression for the sinusoidal morphology is: , where z is the height coordinate, A is the amplitude, λ is the wavelength, Φ is the phase, and n takes integers from 1 to 6 and corresponds to n groups of filtered bands of the orange peel metric value.

[0006] In one possible implementation, the surface topography is a single-frequency waveform, and the expression for its positive selection function is: Where z is the height coordinate, A is the amplitude, and λ is the wavelength; Alternatively, the surface morphology is a composite waveform formed by superimposing multiple sinusoidal wave components of different spatial frequencies, wherein the multiple different spatial frequencies correspond to n different measurement bands of the orange peel analyzer.

[0007] In one possible implementation, the plate is a rectangular structure and is mounted on a measuring base.

[0008] On the other hand, a method for traceability and value determination of standard plate measurements is also provided, wherein the standard plate is the standard plate for calibrating an orange peel analyzer as described in any of the above technical solutions, and includes the following method: The theoretical reference value of the orange peel measurement value of the surface morphology of the standard plate is obtained by calculating the morphology parameters of the standard plate. The orange peel meter to be calibrated measures the standard plate to obtain the measured orange peel value, and then compares the measured orange peel value with the theoretical reference value for calibration.

[0009] In a possible implementation, the theoretical reference value of the orange peel metric of the surface morphology of the standard plate is calculated using the morphology parameters of the standard plate, including the following steps: The slope parameters of the standard plate surface morphology are calculated based on the morphology parameters. The standard deviation of the filtered slope parameter is calculated using a spatial filtering method. The standard deviation of the calculated slope parameter is mapped to a range of 0-100 to obtain the theoretical reference value for the orange peel metric.

[0010] In one possible implementation, the orange peel meter to be calibrated measures the standard plate to obtain the measured orange peel value, and the measured orange peel value is compared with the theoretical reference value for calibration, including the following steps: The measured orange peel value was obtained by measuring the standard plate with an orange peel meter to be calibrated; The theoretical orange peel measurement value that the orange peel meter should theoretically output is calculated based on the calculation method of the orange peel meter. The measured orange peel measurement value, the theoretical orange peel measurement value and the theoretical reference value are compared and judged for calibration.

[0011] In one possible implementation, the theoretical orange peel measurement value that the orange peel meter should theoretically output is calculated based on the calculation method of the orange peel meter, including the following steps: The calculation method is selected based on the publicly available technical information of the orange peel meter to be calibrated. If the orange peel meter manufacturer has disclosed the corresponding filtering and mapping methods, the theoretical orange peel measurement value is calculated using the method. If the orange peel meter manufacturer has not disclosed the corresponding filtering and mapping methods, the orange peel meter is calibrated by comparing the original slope data. The method of calibrating the orange peel analyzer by comparing the original slope data includes the following steps: The slope of the standard plate was measured using an orange peel meter to be calibrated, and the slope distribution data was obtained. Using the slope distribution data 2 included in the standard plate morphology parameters as a reference value, the slope distribution data 1 and the slope distribution data 2 are compared to evaluate the accuracy of the orange peel meter's slope measurement, which serves as the basis for judging the reliability of the orange peel measurement value.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention relates to a standard plate for calibrating an orange peel meter and a method for tracing and determining its values. It defines the method for tracing and determining the values ​​of the standard plate. The designed standard plate has a precise morphology that conforms to the applicable range of the orange peel meter. Its morphology parameters are calibrated using precision profile instruments such as a white light interferometer based on SI units, and are directly traceable to the national length standard. Furthermore, the theoretical orange peel measurement values ​​and their uncertainties of the standard plate in each orange peel band can be calculated. For the first time, it realizes independent traceability, reproducibility, and quantifiable evaluation of orange peel meter calibration, providing a unified metrological standard for the field of coating surface morphology measurement. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a standard plate used for calibrating an orange peel analyzer; Figure 2 To use a white light interferometer to Figure 1 Two-dimensional results of the morphological characterization of the standard plate; Figure 3 for Figure 2 Topographic view of the center section in the longitudinal direction; Figure 4 A schematic diagram of the morphology of a standard plate with superimposed multi-spatial wavelengths; Figure 5 for Figure 4 Illustration of different wavelength components of the superimposed morphology; Figure 6 This is a flowchart of a standard plate quantity traceability and value determination method.

[0014] In the diagram: 1 - Standard plate. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to specific embodiments.

[0016] Please refer to Figures 1-5 As shown, an embodiment of this application provides a standard plate for calibrating an orange peel analyzer, comprising a smooth plate body with a surface morphology suitable for orange peel analyzer measurement. The surface morphology has morphology parameters obtained by calibration using a precision instrument for measuring the surface morphology based on SI units. The surface morphology is a sinusoidal morphology, and the expression for the sinusoidal morphology is: , where z is the height coordinate, A is the amplitude, λ is the wavelength, Φ is the phase, and n takes integers from 1 to 6 and corresponds to n groups of filtered bands of the orange peel metric value.

[0017] Standard plate 1 is a component used in conjunction with an orange peel analyzer for measurement and calibration. It features a precise morphological structure conforming to the measurement range of the orange peel analyzer, primarily referring to the long-wavelength and short-wavelength ranges. Correspondingly, this morphological structure possesses specific morphological parameters, typically including amplitude, spatial wavelength, period, and slope. To facilitate traceability, the morphological structure employs a smooth surface, and the morphological parameters are calibrated using precision profilometry instruments such as a white light interferometer. The white light interferometer offers significantly higher morphological measurement accuracy than the orange peel analyzer and possesses a complete traceability chain. This ensures both ease of traceability and the standard plate's versatility in orange peel analyzer measurement, while also facilitating the construction of a measurement calibration system.

[0018] The preferred morphology on the standard board is a sinusoidal morphology, which can be a single-frequency sinusoidal morphology, combined with... Figure 2 and Figure 3 As shown, a single frequency component (i.e., only the fundamental frequency, without higher harmonics) in the spatial frequency domain allows for the concentration of all energy near the center frequency of a specific orange peel band when designing a standard plate for that band. This prevents energy leakage to adjacent bands, thus accurately evaluating the filtering characteristics and measurement accuracy of the orange peel analyzer in that band. The sinusoidal shape can also be a multi-frequency sinusoidal coincidence shape, covering the measurement range of an orange peel analyzer that measures multiple bands. The specific configuration can be selected based on requirements or actual conditions. For example, a standard plate with a single-frequency spatial wavelength waveform of 2mm corresponds to covering the orange peel band with a wavelength range of 1-3mm. When designing a standard plate for a specific orange peel band, such as 1mm-3mm, the selection of the standard plate's spatial wavelength concentrates all energy near the center frequency of that band, minimizing energy leakage to adjacent bands, thereby accurately evaluating the filtering characteristics and measurement accuracy of the orange peel analyzer in that band.

[0019] Furthermore, when the sinusoidal shape is a positive selection function with a single frequency, its functional form is: This function is a function The slope distribution of the function formula when n is 1 is as follows: s ( x ) = (2π A / λ cos(2π) x / λ The standard deviation of the slope can be calculated directly analytically. Then, substituting the calculated result into the orange peel measurement mapping formula yields the closed-form expression for the theoretical orange peel measurement. This process avoids the approximation errors of numerical differentiation or discrete Fourier transform, ensuring the theoretical truth value possesses the highest mathematical rigor and reproducibility. Similarly, when the surface morphology is a multi-frequency coincident morphology, it can also be calculated using the slope. Given a target orange peel measurement value, the amplitude and wavelength combination of the required sinusoidal morphology can be calculated in reverse using this morphological structure and easily traceable morphological parameters. This facilitates the design of standard plates covering different measurement ranges (e.g., orange peel measurement values ​​= 20, 50, 80), enabling serialized production and batch calibration. The sinusoidal morphology is smooth and continuous, and the physical meaning of the wavelength and amplitude measurement results obtained by the white light interferometer is clear, with a clear propagation path for measurement uncertainty. In contrast, the calibration results of random or complex morphologies may be sensitive to sampling location, filtering parameters, etc., making uncertainty assessment more difficult.

[0020] Although a single sine wave corresponds to a single frequency, the calibration efficiency can be improved by spatially superimposing multiple sine waves of different frequencies, and standard parts and standard plates with different combinations of morphology can be set according to measurement requirements.

[0021] Meanwhile, the sinusoidal morphology, as the basic pattern of the standard plate, ensures both the accurate calculability of theoretical values ​​and facilitates actual processing and metrological calibration. It is the most preferred implementation method in this application, but it is not limited to sinusoidal morphology. Any morphology that has been accurately calibrated with a white light interferometer and whose theoretical orange peel measurement value can be calculated using a public filtering method can be used as a standard plate under ideal conditions. However, it should be noted that, for example, triangular and square wave morphologies have abrupt slope changes, and actual random morphologies may contain local steep regions, all of which will affect the reliability of the orange peel meter's optical measurements. Therefore, surface smoothness and continuity are indispensable constraints in the design of the standard plate morphology, which is one of the fundamental reasons for favoring the sinusoidal morphology.

[0022] Through the above technical solution, the designed standard plate has a precise morphology that conforms to the applicable range of the orange peel meter. Its morphology parameters are calibrated based on SI units using precision contour instruments such as white light interferometers, and can be directly traced back to the national length standard. Furthermore, the theoretical orange peel measurement value and its uncertainty of the standard plate in each orange peel band can be calculated. For the first time, the calibration of the orange peel meter can be independently traceable, reproducible, and quantitatively evaluated, providing a unified metrological standard for the field of coating surface morphology measurement.

[0023] In one embodiment, combined with Figure 4 and Figure 5 As shown, the surface morphology is a composite waveform formed by superimposing multiple sinusoidal wave components with different spatial frequencies, and the multiple different spatial frequencies correspond to n different measurement bands of the orange peel analyzer.

[0024] By simultaneously covering multiple orange peel bands on a single standard plate, calibration efficiency is improved. The orthogonality of the sinusoidal components ensures that the frequency components do not interfere with each other, facilitating subsequent frequency domain analysis. Figure 4 and Figure 5 It can be seen that the composite waveform formed by superimposing multiple sinusoidal wave components of different spatial frequencies can cover multiple measurement bands that can be measured by the orange peel analyzer, including D. u W a W b W c W d and W e This enables measurements to be taken at different wavelengths, and also makes the standard plate more applicable to orange peel meters with different measurement wavelengths. It is not limited to being used only for one orange peel meter, and has good versatility and facilitates traceability.

[0025] In practice, the plate has a rectangular structure and is mounted on the measuring base. This facilitates its use with the orange peel analyzer.

[0026] Please refer to Figure 6 As shown, embodiments of this application also provide a method for traceability and value determination of a standard plate, wherein the standard plate is any of the standard plates described above for calibrating an orange peel analyzer, and includes the following method: Step S100: Calculate the theoretical reference value of the orange peel metric value of the surface morphology of the standard plate using the morphology parameters of the standard plate.

[0027] In this step, based on the morphology parameters of the standard plate, a theoretical reference value for the orange peel measurement of the continuous waveform morphology standard plate can be calculated. This theoretical reference value does not depend on the internal algorithm of any specific orange peel meter, making the orange peel measurement value a physical quantity that can be independently calculated, reproduced, and traced for the first time. This theoretical reference value facilitates the calibration of the orange peel meter and also facilitates traceability.

[0028] Step S200: Measure the standard plate with the orange peel meter to be calibrated to obtain the measured orange peel value, and compare the measured orange peel value with the theoretical reference value for calibration.

[0029] In this step, the standard plate of the orange peel meter to be calibrated can obtain the measured orange peel value calculated based on the internal algorithm of the orange peel meter. By comparing the measured orange peel value with the theoretical reference value, the stability of the orange peel meter and its ease of calibration can be determined.

[0030] Through the above technical solution, a method for tracing and determining the measurement value is defined. The designed standard plate has a precise morphology that can be described by mathematical functions. Its morphology parameters are calibrated using precision contour instruments such as white light interferometers based on SI units, and are directly traceable to the national length standard. Furthermore, the theoretical orange peel measurement value and its uncertainty of the standard plate in each orange peel band can be calculated. For the first time, the calibration of the orange peel meter is independently traceable, reproducible, and quantifiable, providing a unified metrological standard for the field of coating surface morphology measurement. The theoretical orange peel measurement value does not depend on the internal algorithm of any specific orange peel meter, making the orange peel value a physical quantity that can be independently calculated, reproducible, and traceable for the first time, which is more conducive to the calibration of the orange peel meter and data traceability.

[0031] In one embodiment, step S100 includes the following method: Step S110: Calculate the slope parameters of the surface morphology of the standard plate based on the morphology parameters; Step S120: Calculate the standard deviation of the filtered slope parameter using a spatial filtering method; Step S130: Map the standard deviation of the calculated slope parameter to a range of 0-100 to obtain the theoretical reference value of the orange peel metric.

[0032] By performing high-precision measurements of the surface morphology, obtaining the slope through numerical differentiation, and then applying a publicly available spatial filtering method (referencing ISO 16610 standard) to calculate the standard deviation of the filtered slope, which is then mapped to the range of 0-100, the orange peel measurement value is theoretically fully traceable to SI length units. Based on this principle, we can directly calculate the theoretical orange peel measurement value and its uncertainty for the standard plate in each orange peel band based on the morphology parameters obtained from calibration. This represents the first time that the calibration of the orange peel meter has achieved independent traceability, reproducibility, and quantifiable evaluation. Furthermore, step S200 includes the following methods: Step S210: Measure the standard plate using the orange peel meter to be calibrated to obtain the measured orange peel value; Step S220: Calculate the theoretical orange peel measurement value that the orange peel meter should theoretically output based on the calculation method of the orange peel meter, and compare the measured orange peel measurement value, the theoretical orange peel measurement value and the theoretical reference value to make a judgment for calibration.

[0033] In some embodiments of step S220, the following steps are included: Step S221: Select the calculation method according to the publicly available technical information of the orange peel meter to be calibrated. If the orange peel meter manufacturer has disclosed the corresponding filtering and mapping method, use the method to calculate the theoretical orange peel measurement value. If the orange peel meter manufacturer has not disclosed the corresponding filtering and mapping method, use the method of comparing the original slope data to calibrate the orange peel meter. The method of calibrating the orange peel analyzer by comparing the original slope data includes the following steps: Step S222: Measure the slope of the standard plate using the orange peel meter to be calibrated to obtain slope distribution data one; Step S223: Using the slope distribution data 2 included in the standard plate morphology parameters as a reference value, compare the slope distribution data 1 with the slope distribution data 2 to evaluate the accuracy of the orange peel meter's slope measurement, and use this as a basis for judging the reliability of the orange peel measurement value.

[0034] The calculation methods for orange peel analyzers mainly rely on filtering methods or mapping formulas. If the filtering method or mapping formula of the orange peel analyzer under test is not disclosed, it is impossible to directly calculate its output orange peel measurement value from the morphological parameters. In this case, the standard plate of the embodiment of this application can still play a core role, that is, directly trace back to the original slope data. Specifically, by using the slope distribution measured by the white light interferometer of the standard plate as a reference value and comparing it with the slope distribution measured by the orange peel analyzer under test, the accuracy of the instrument in the slope measurement stage can be evaluated, thereby indirectly constraining the reliability of its final orange peel measurement value. In other words, regardless of whether the manufacturer discloses the filtering algorithm, the standard plate can provide an independent and traceable calibration path: when the algorithm is disclosed, it can be traced back to the orange peel measurement value; when the algorithm is not disclosed, it can be traced back to the slope distribution.

[0035] Test example: This test case uses the orange peel measurement value of spatial wavelengths from 1 mm to 3 mm as an example to specifically demonstrate the standard plate structure and the method of traceability and determination of the measurement value. Figure 1 This is a standard plate with a sinusoidal morphology fabricated using a spatial wavelength of 2 mm and an amplitude of 3 μm. Figure 2 To use a white light interferometer to Figure 1 The one-dimensional morphology characterization results of the standard plate are shown in the figure. The measurement results show that the morphology period is 1.970 mm and the amplitude is 3.022 μm, which is very close to the design value. Figure 3 The central tangent along the length of a 14mm × 4.7mm area on a standard plate is shown. Based on this measurement result, the distribution value of the slope variance can be calculated, as shown in Table 1.

[0036] Table 1. Comparison of theoretical and measured values ​​of slope variance for each band of the processed standard plate.

[0037] After obtaining the slope variance for each band, the variance value can be converted into an orange peel metric value of 0 to 100 using a mapping formula. For example, BYK's mapping method (J. Coat. Technol. Res., 9 (3) 297–307, 2012) Figure 5 The standard board produced corresponds to W cThe value is 48.7, and the values ​​of the other bands are all less than 0.1, which can be ignored.

[0038] It should be noted that the orange peel metric (such as W) calculated by ISO-based filtering methods such as Gaussian filtering or wavelet filtering... c The filter parameter settings can cause the calculated value to differ from the theoretical value by a weighting coefficient or produce a spectral leakage effect, affecting adjacent bands (such as W). b W d The output W value is significantly non-zero. If the equipment manufacturer does not disclose its specific filtering parameters and mapping functions, third parties cannot directly calculate the output W value from the physical appearance of the standard board, thus making it impossible to achieve complete traceability of the W value.

[0039] However, regardless of whether the filtering and mapping algorithms are publicly available, the raw slope distribution data measured by the orange peel measuring instrument is the fundamental object of traceability. Slope, as the ratio of length to displacement, can theoretically be traced back to the SI unit of length. Therefore, higher-precision measuring equipment (such as a white light interferometer or confocal microscope) can be used to calibrate the surface morphology of the same standard plate, and the slope distribution calculated from it can be used as a reference value. By comparing the slope distribution measured by the orange peel measuring instrument under test with this reference value point by point, and calculating statistical measures such as the standard deviation of the difference distribution, the accuracy and uncertainty of the instrument in the slope measurement stage can be quantitatively evaluated. This process does not rely on subsequent signal processing algorithms within the equipment, providing an independent and universal path for traceability of orange peel measuring instruments.

[0040] The above are merely preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be considered as limitations on the present invention, and the scope of protection of the present invention should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A standard plate for calibrating an orange peel analyzer, characterized in that, The device includes a smooth plate with a surface morphology suitable for measurement by an orange peel analyzer. The surface morphology has morphology parameters obtained by a precision instrument for measuring the surface morphology based on SI units. The surface morphology is a sinusoidal morphology, and the expression for the sinusoidal morphology is: , where z is the height coordinate, A is the amplitude, λ is the wavelength, Φ is the phase, and n takes integers from 1 to 6 and corresponds to n groups of filtered bands of the orange peel metric value.

2. The standard plate for calibrating an orange peel analyzer as described in claim 1, characterized in that, The surface morphology is a single-frequency waveform, and the expression for its positive selection function is: Where z is the height coordinate, A is the amplitude, and λ is the wavelength; Alternatively, the surface morphology is a composite waveform formed by superimposing multiple sinusoidal wave components of different spatial frequencies, wherein the multiple different spatial frequencies correspond to n different measurement bands of the orange peel analyzer.

3. A standard plate for calibrating an orange peel analyzer as described in claim 1, characterized in that, The plate has a rectangular structure and is mounted on the measuring base.

4. A method for traceable determination of standard plate values, wherein the standard plate is the standard plate for calibrating an orange peel analyzer as described in any one of claims 1-3, characterized in that, Including the following methods: The theoretical reference value of the orange peel measurement value of the surface morphology of the standard plate is obtained by calculating the morphology parameters of the standard plate. The orange peel meter to be calibrated measures the standard plate to obtain the measured orange peel value, and then compares the measured orange peel value with the theoretical reference value for calibration.

5. The standard plate quantity traceability and value determination method as described in claim 4, characterized in that, The theoretical reference value of the orange peel metric of the surface morphology of the standard plate is obtained by calculating the morphological parameters of the standard plate, including the following steps: The slope parameters of the standard plate surface morphology are calculated based on the morphology parameters. The standard deviation of the filtered slope parameter is calculated using a spatial filtering method. The standard deviation of the calculated slope parameter is mapped to a range of 0-100 to obtain the theoretical reference value for the orange peel metric.

6. The standard plate quantity traceability and value determination method as described in claim 4, characterized in that, The orange peel meter to be calibrated measures the standard plate to obtain the measured orange peel value. The measured orange peel value is then compared with the theoretical reference value for calibration, including the following steps: The measured orange peel value was obtained by measuring the standard plate with an orange peel meter to be calibrated; The theoretical orange peel measurement value that the orange peel meter should theoretically output is calculated based on the calculation method of the orange peel meter. The measured orange peel measurement value, the theoretical orange peel measurement value and the theoretical reference value are compared and judged for calibration.

7. The standard plate quantity traceability and value determination method as described in claim 6, characterized in that, The calculation method based on the orange peel meter is used to calculate the theoretical orange peel measurement value that the orange peel meter should theoretically output, including the following steps: The calculation method is selected based on the publicly available technical information of the orange peel meter to be calibrated. If the orange peel meter manufacturer has disclosed the corresponding filtering and mapping methods, the theoretical orange peel measurement value is calculated using the method. If the orange peel meter manufacturer has not disclosed the corresponding filtering and mapping methods, the orange peel meter is calibrated by comparing the original slope data. The method of calibrating the orange peel analyzer by comparing the original slope data includes the following steps: The slope of the standard plate was measured using an orange peel meter to be calibrated, and the slope distribution data was obtained. Using the slope distribution data 2 included in the standard plate morphology parameters as a reference value, the slope distribution data 1 and the slope distribution data 2 are compared to evaluate the accuracy of the orange peel meter's slope measurement, which serves as the basis for judging the reliability of the orange peel measurement value.

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