A portable white granulated sugar color value rapid detection device, a white granulated sugar color value rapid detection method and a storage medium

Abstract

The present application relates to the technical field of white sugar color value detection, and particularly relates to a portable white sugar color value rapid detection device, a white sugar color value rapid detection method and a storage medium. A first container of the device is provided with a first light source and a detachably installed ND mirror; a second container is provided with a second light source and a built-in colorimetric cell; a photoelectric detector comprises a first photodiode and a second photodiode, the first photodiode receives a light signal of the first light source after passing through the ND mirror, and the second photodiode receives a light signal of the second light source after passing through the colorimetric cell; an analog-to-digital conversion circuit calculates the light signals of the first light source and the second light source and outputs a voltage; a microcontroller processes and transmits the converted light signals. The device can simply, quickly and accurately detect the color value of white sugar, and has the advantages of convenient operation and high stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of white sugar color value detection, and particularly relates to a portable white sugar color value rapid detection device, a white sugar color value rapid detection method and a storage medium. BACKGROUND

[0002] China is a large sugar-producing country, and the annual sugar output ranks in the world. The sugar industry in China is mainly based on sugarcane sugar production, which accounts for 90% of the total output, and sugar beet sugar production accounts for 10%. Sugar production enterprises are mainly distributed in 12 provinces in China, and sugarcane sugar production areas are mainly distributed in southern regions such as Guangxi, Yunnan, Guangdong and Hainan. The sugar industry has become an important pillar of the national economy. According to different sugar production processes, sugarcane white sugar can be divided into sulfated sugar and carbonated sugar. At present, the traditional clarification process of sugarcane sugar in China mainly includes lime method, sulfurous acid method and carbonic acid method. Since sulfurous acid is used as a clarifying agent due to its low cost and high efficiency, more than 90% of sugar production enterprises produce sulfated sugar. Using the sulfurous acid method to produce white sugar, a large amount of sulfur dioxide is used as a clarifying agent and a decolorizing agent in the production process, which inevitably leads to the presence of sulfur dioxide in the juice and syrup. During the crystallization process, sulfur dioxide is encapsulated into the white sugar crystals, resulting in the residual sulfur dioxide in the finished white sugar product. Generally, the reasonable use of sulfur dioxide according to the standard will not cause harm to the human body, but if the human body ingests sugar products with too high sulfur dioxide content, it is easy to cause allergies and may cause respiratory difficulties, diarrhea, vomiting and other symptoms, and may also cause varying degrees of damage to the brain and other tissues.

[0003] Research has found that the higher the content of sulfur dioxide in the finished white sugar product, the higher the color value. Sulfur dioxide in white sugar exists in the form of sulfite, mainly calcium sulfite, and part of it is colorless sulfonate generated by the addition reaction of sulfurous acid and organic compounds containing double bonds. The addition reaction is a reversible reaction process. In the case of high concentration of sulfurous acid, the colored substances are reduced to colorless substances. After clarification and precipitation, the content of sulfite in white sugar is greatly reduced. The colorless substances reduced by the reversible reaction are re-generated into the original colored substances, causing the increase of the color value of white sugar. Therefore, among the main physicochemical indicators of white sugar, the color value indicator is one of the important indicators.

[0004] The color value of white sugar is closely related to the personal health and safety of consumers and affects the benefits of sugar enterprises. According to the national standard of white sugar, the color value of white sugar is detected by measuring the absorption rate of white sugar solution to 420nm wavelength light by using a spectrophotometer, and the color value is calculated. At present, the traditional 721, 722, 723 and 751 type spectrophotometers are mostly used in China. For the detection of the color value of white sugar, the traditional spectrophotometer has the following shortcomings: first, the requirements for the temperature and humidity of the environment are relatively high, and some sugar enterprises cannot meet the good environmental requirements, and long-term use will cause a large error in the data measured by the instrument. Second, in the color value detection, the wavelength of the light used is 420nm, and there is a certain error in the selection of the wavelength of the spectrophotometer. Third, the volume of the spectrophotometer is relatively large, and it is not convenient for flow detection. SUMMARY

[0005] One of the purposes of the present application is to overcome the defects of the prior art and provide a portable white sugar color value rapid detection device which can simply, quickly and accurately detect the color value of white sugar and has the advantages of convenient operation and high stability.

[0006] The second purpose of the present application is to provide a rapid detection method for the color value of white sugar.

[0007] One of the purposes of the present application can be realized by the following technical solutions:

[0008] A portable white sugar color value rapid detection device is provided, which comprises a light seal device, the light seal device is provided with

[0009] A first container is provided with a first light source and a ND mirror which can be detachably installed, and the monochromatic light of the first light source is vertically incident into the mirror surface of the ND mirror;

[0010] A second container is provided beside the second container, a second light source is provided in the second container, a colorimetric cell is provided in the second container, a colorimetric dish is built in the colorimetric cell, and the monochromatic light of the second light source is vertically incident into the surface of the colorimetric dish;

[0011] A photoelectric detector is provided, which comprises a first photodiode and a second photodiode, the first photodiode receives the light signal of the first light source after passing through the ND mirror, and the second photodiode receives the light signal of the second light source after passing through the colorimetric dish;

[0012] An analog-digital conversion circuit is connected with the photoelectric detector, which is used for operating the light signals of the first light source and the second light source and outputting voltage;

[0013] A microcontroller is connected with the analog-digital conversion circuit, and the microcontroller processes and transmits the converted light signals;

[0014] A display system connected to a microcontroller for receiving and displaying color value data;

[0015] The first light source is the same as the second light source, the first light source is incident to the first container through a first aperture, the second light source is incident to the second container through a second aperture, and the aperture of the first aperture is an adjustable aperture.

[0016] In some embodiments, the analog-to-digital conversion circuit is composed of a logarithmic operational amplifier and an A / D converter, the logarithmic operational amplifier converts the optical signals received by the first photodiode and the second photodiode into analog signals, and the A / D converter converts the analog signals into digital signals.

[0017] In some embodiments, the cuvette is a quartz cuvette.

[0018] In some embodiments, the first light source and the second light source are both monochromatic laser light sources with the same power and a fixed wavelength of 420 nm.

[0019] In some embodiments, the microcontroller uses a single-chip microcomputer chip STC89C52.

[0020] In some embodiments, the first photodiode and the second photodiode are both silicon photodiodes.

[0021] Compared with the prior art, the portable white sugar color value rapid detection device has the following beneficial effects:

[0022] (1) The portable white sugar color value rapid detection device simplifies the structure of the device, makes the device small, realizes flow detection, has higher portability, realizes flow detection of the color value, and improves the efficiency of detecting the color value and the timeliness of detection.

[0023] (2) The portable white sugar color value rapid detection device uses a photodetector to compare the light intensity of the contrast ND mirror and the white sugar to be detected, that is, the photodetector converts the light intensity of the ND mirror and the light intensity of the white sugar to be detected into electric current, respectively, and compares the difference between the color value of the white sugar to be detected and the standard white sugar with the color value set to 0 by operating two electric currents, which can realize the detection result, and the photodetector is sensitive to light intensity, can quickly detect the light intensity difference between the white sugar and the contrast sample, obtain the color value of the white sugar, and improve the accuracy of detection.

[0024] (3) The portable white sugar color value rapid detection device of the present application uses a fixed wavelength laser light source, does not need to adjust the light source parameters, overcomes the wavelength error error problem of the traditional spectrophotometer, ensures the stability of the light source, improves the test efficiency and accuracy, and at the same time, through the double light source detection of the first light source and the second light source, the influence of the ambient light on the color value detection can be reduced, and the detection accuracy is further improved.

[0025] (4) The portable white sugar color value rapid detection device of the present application uses a photoelectric detector and uses double light source detection, which has no requirement for environmental humidity, improves the detection accuracy, and is convenient to operate and suitable for large-scale production application.

[0026] (5) The portable white sugar color value rapid detection device of the present application can realize self-detection of error through the absorbance detection circuit composed of the photoelectric detector and the analog-to-digital conversion circuit, directly converts the absorbance into a voltage value, and judges the error of the device through the absorbance value of the sample not placed.

[0027] (6) The portable white sugar color value rapid detection device of the present application is a new type of color value detection device, which can improve the detection precision, has low manufacturing cost, and is suitable for large-scale production application.

[0028] The second purpose of the present application can be realized by the following technical solutions:

[0029] A white sugar color value rapid detection method is provided, which adopts the above-mentioned portable white sugar color value rapid detection device, and includes the following steps,

[0030] S1, adjusting the control sample ND mirror, which includes:

[0031] S101, turning on the first light source and the second light source, adjusting the aperture of the first aperture, so that the output voltage of the photoelectric detector is zero;

[0032] S102, injecting the white sugar standard solution with a color value of 0 into the cuvette of the second container, the white sugar standard solution is prepared according to the national standard GBT35887-2018, and the ND mirror is installed in the first container, when the output voltage of the photoelectric detector is not zero, the ND mirror needs to be replaced, until the output voltage V 0＝ 0 of the photoelectric detector, at this time, the ND mirror is suitable as the control sample ND mirror;

[0033] S2, testing the absorbance of the white sugar to be tested, which includes:

[0034] S201, preparing the white sugar to be tested into a white sugar to be tested solution according to the national standard GBT35887-2018, and replacing the white sugar standard solution in the second container with the white sugar to be tested solution;

[0035] S202, read the output voltage V of the photodetector, convert the measured output voltage into absorbance A, the conversion formula is as follows:

[0036] A = -V = -log(I1 / I2),

[0037] I1 is the current measured by the first photodiode, I2 is the current measured by the second photodiode, wherein the first photodiode converts the light intensity into I1 through the photodetector, and the second photodiode converts the light intensity into I2;

[0038] S3, calculating the color value, which comprises:

[0039] S301, using refined, premium, first-class, and second-class white granulated sugar as standard sugar, detecting according to the color value determination method in the national standard GBT35887-2018 to obtain the standard color value C V1 ;

[0040] S301, according to the above step S2, obtaining the standard absorbance A V1 of the refined, premium, first-class, and second-class white granulated sugar, according to the formula C V1 =kA V1 , obtaining the value of the color value correction coefficient k;

[0041] S302, according to the color value correction coefficient k, calculating the color value of the target white granulated sugar to be measured, the calculation method is C 目标 =kA 目标 , C 目标 is the color value of the target white granulated sugar to be measured, and A 目标 is the absorbance of the target white granulated sugar to be measured obtained by step S2.

[0042] In some embodiments, in the step S3, the obtained color value correction coefficient k is set in the microcontroller, and after A 目标 of the target white granulated sugar to be measured is obtained, C 目标 is calculated by the microcontroller.

[0043] The working principle of the above rapid detection method is as follows: before placing any sample, that is, before the first container and the second container are blank, the first light source and the second light source are turned on, and whether the light intensity of the first container and the second container is consistent is judged by observing the output voltage of the photodetector. If they are consistent, the output voltage is 0 at this time, otherwise, it is not 0. If it is not 0 and needs to be adjusted, the first aperture is adjusted until the output voltage is 0. At this time, it can be effectively ensured that the light intensity received by the first container and the second container before detection is consistent. Then, the ND mirror and the white sugar standard solution with a color value of 0 are placed. At this time, the output voltage is observed again. If the output voltage is not 0, it indicates that the color value of the ND mirror at this time is not equal to that of the white sugar standard solution. Then, the ND mirror is replaced until the output voltage is 0. At this time, it indicates that the color value of the ND mirror is the same as that of the white sugar standard solution, and the ND mirror can be used as a control sample for detection. Then, the white sugar standard solution is replaced with the white sugar solution to be detected. The photodetector will output a detection voltage. The detection voltage is converted into absorbance. Then, the white sugar with a known color value is detected by the white sugar color value rapid detection device to obtain the corresponding absorbance. The absorbance of these white sugars is compared with the known color values of these white sugars to obtain a color value correction coefficient k. The k value is a constant. Therefore, the absorbance detected by the white sugar color value rapid detection device can be converted into a color value through the k value. That is, the k value is used to correct the relationship between the color value and the absorbance, so that the color value can be obtained by measuring the absorbance.

[0044] Compared with the prior art, the rapid detection method for white sugar of the present application has the following advantages:

[0045] (1) The rapid detection method for white sugar of the present application can quickly detect the color value of the white sugar to be detected by using the portable white sugar color value rapid detection device and the conversion formula, and has the advantages of high detection accuracy and fast detection speed.

[0046] (2) The rapid detection method for white sugar of the present application uses an ND mirror as a control sample, has the advantage of high stability, avoids the problem that white sugar is easily oxidized when a white sugar standard solution is used as a control sample, and ensures the accuracy of detection.

[0047] A storage medium is also provided. The computer readable storage medium stores a computer program. When the computer program is read and run by a processor, the rapid detection method for the color value of white sugar is realized. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 It is a top view of the structural framework of the embodiment of the present application.

[0049] Figure 2 It is a flowchart of the rapid detection method for white sugar of the embodiment of the present application; and a system principle block diagram.

[0050] Figure 3 The light detection circuit diagram of the photoelectric detector and the analog-digital conversion circuit of the specific embodiment of the present application.

[0051] Reference signs:

[0052] Light seal 1; first container 2; ND mirror 3; second container 4; cuvette 5; cuvette 6; analog-digital conversion circuit 7; microcontroller 8; display system 9; first light source 10; second light source 11; first photodiode 12; second photodiode 13. DETAILED DESCRIPTION

[0053] The preferred embodiments of the present application will be described in more detail by referring to the attached drawings. Although the preferred embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0054] The terms used in the present application are merely for the purpose of describing particular embodiments and are not intended to limit the present application. The singular forms "a," "an," and "the" used in the present application and the appended claims are intended to include plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "and / or," as used herein, refer to and encompass any or all possible combinations of one or more of the associated listed items.

[0055] It should be understood that although the terms "first," "second," "third," etc. can be employed in describing various information used in the present application, the information should not be limited by these terms. These terms are only used to distinguish one category of information from another category of information. For example, a first information can also be termed a second information, and, similarly, a second information can also be termed a first information, without departing from the scope of the present application. As such, the term "first," "second," etc. can explicitly or implicitly specify one or more of the features where these terms are used. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly specifically defined otherwise.

[0056] Example 1

[0057] The portable white sugar color value rapid detection device disclosed in the present embodiment, Figure 1 as shown,

[0058] The first light source 10 and the ND mirror 3 are detachably installed in the first container 2, and monochromatic light of the first light source 10 is vertically incident into the mirror surface of the ND mirror 3; the first container 2 is arranged side by side with the second container 4, and the first container 2 is arranged side by side with the second container 4 so as to reduce the error caused by detection.

[0059] The second container 4 is provided with a second light source 11, and the second container 4 is provided with a cuvette 5, and the cuvette 6 is arranged in the cuvette 5, and monochromatic light of the second light source 11 is vertically incident on the surface of the cuvette 6;

[0060] The photoelectric detector comprises a first photodiode 12 and a second photodiode 13, the first photodiode 12 receives the light signal of the first light source 10 after passing through the ND mirror 3, and the second photodiode 13 receives the light signal of the second light source 11 after passing through the cuvette 6.

[0061] The analog-digital conversion circuit 7 is connected with the photoelectric detector, the analog-digital conversion circuit 7 is used for operating the light signal of the first light source 10 and the light signal of the second light source 11 and outputting a voltage, the microcontroller 8 is connected with the analog-digital conversion circuit 7, the microcontroller processes and transmits the converted light signal, and the display system 9 is connected with the microcontroller and is used for receiving and displaying color value data, wherein the first light source 10 is the same as the second light source 11, so as to reduce the difference between the first light source and the second light source, the first light source 10 is incident on the first container 2 through the first aperture, the second light source 11 is incident on the second container 4 through the second aperture, the aperture of the first aperture is an adjustable aperture, and the light intensity of the first light source through the first aperture can be adjusted.

[0062] The portable white sugar color value rapid detection device of the application can realize flow detection, has higher portability, realizes flow detection of the color value, and improves the efficiency of detecting the color value and the timeliness of detection. The photoelectric detector is used to compare the light intensity of the ND mirror 3 and the white sugar to be detected, that is, the photoelectric detector converts the light intensity of the ND mirror 3 and the light intensity of the white sugar to be detected into electric current respectively, the color value of the white sugar to be detected and the difference between the standard solution of the white sugar are compared by operating the two electric currents, the detection result can be realized, the photoelectric detector has high sensitivity to the light intensity, the difference between the light intensity of the white sugar and the contrast sample can be quickly detected, the color value of the white sugar is obtained, and the accuracy of detection is improved. The fixed wavelength laser light source is used, the light source parameters do not need to be adjusted, the wavelength error problem of the traditional spectrophotometer is overcome, the stability of the light source is ensured, the test efficiency and accuracy are improved, the influence of the environmental light on the color value detection can be reduced by using the double light source detection of the first light source 10 and the second light source 11, and the accuracy of detection is further improved. The photoelectric detector is used for sensing and the double light source detection is used, the environmental humidity is not required, the accuracy of detection is improved, the operation is convenient, and the device is suitable for large-scale production application. The light intensity detection circuit composed of the photoelectric detector and the logarithmic operator can realize self-detection of the error, the light intensity is directly converted into a voltage value, and the error of the device is judged by the light intensity value of the sample not placed. As a new type of color value detection device, the device can improve the detection precision, has low manufacturing cost, and is suitable for large-scale production application.

[0063] In the embodiment, the analog-digital conversion circuit 7 is composed of a logarithmic operational amplifier and an A / D converter, the logarithmic operational amplifier converts the optical signals received by the first photodiode 12 and the second photodiode 13 into analog signals, and the A / D converter converts the analog signals into digital signals, so that the signal obtained by the photodetector can be operated.

[0064] These components can be obtained in the market and will not be described here.

[0065] In the embodiment, the cuvette 6 is a quartz cuvette 6.

[0066] In the embodiment, the first light source 10 and the second light source 11 are both monochromatic laser light sources with the same power and a fixed wavelength of 420 nm. The photodetector is more sensitive to monochromatic laser light sources with a wavelength of 420 nm, which improves the detection accuracy.

[0067] In the embodiment, the microcontroller 8 uses a single-chip microcomputer chip STC89C52.

[0068] In the embodiment, the first photodiode 12 and the second photodiode 13 are both silicon photodiodes.

[0069] Embodiment 2

[0070] The rapid detection method for the color value of white granulated sugar disclosed in the embodiment, Figure 2 As shown, the portable white granulated sugar color value rapid detection device described in Embodiment 1 comprises the following steps,

[0071] S1, adjusting the control sample ND mirror 3, which comprises:

[0072] S101, turning on the first light source 10 and the second light source 11, and adjusting the aperture of the first aperture so that the output voltage of the photodetector is zero;

[0073] S102, injecting a white granulated sugar standard solution with a color value of 0 into the cuvette 6 of the second container 4, the white granulated sugar standard solution is prepared according to the national standard GBT35887-2018, and the ND mirror 3 is installed in the first container 2, when the output voltage of the photodetector is not zero, the ND mirror needs to be replaced until the output voltage V of the photodetector is zero, at this time, the ND mirror is suitable as the control sample ND mirror; 0＝ 0, at this time, the ND mirror is suitable as the control sample ND mirror;

[0074] S2, testing the absorbance of the white granulated sugar to be tested, which comprises:

[0075] S201, preparing the white granulated sugar to be tested into a white granulated sugar solution according to the national standard GBT35887-2018, and replacing the white granulated sugar standard solution in the second container 4 with the white granulated sugar solution to be tested;

[0076] S202, read out the output voltage V of the photodetector, convert the measured output voltage into absorbance A, and the conversion formula is as follows:

[0077] A = -V = -log (I1 / I2),

[0078] I1 is the current measured by the first photodiode 12, and I2 is the current measured by the second photodiode 13, wherein the first photodiode 12 converts the light intensity into I1 through the photodetector, and the second photodiode 13 converts the light intensity into I2;

[0079] S3, calculating the color value, which includes:

[0080] S301, using refined, premium, first-class, and second-class white granulated sugar as standard sugar, detecting according to the color value determination method in GBT35887-2018 "White granulated sugar test method", and measuring the standard color value C V1 ;

[0081] S301, according to the above step S2, obtaining the standard absorbance A V1 of the refined, premium, first-class, and second-class white granulated sugar, and according to the formula C V1 = kA V1 , obtaining the value of the color value correction coefficient k;

[0082] S302, according to the color value correction coefficient k, calculating the color value of the target white granulated sugar to be measured, and the calculation method is C 目标 = kA 目标 , C 目标 is the color value of the target white granulated sugar to be measured, and A 目标 is the absorbance of the target white granulated sugar to be measured obtained by step S2.

[0083] The working principle of the above rapid detection method is as follows: before placing any sample, that is, before the first container 2 and the second container 4 are blank, turn on the first light source 10 and the second light source 11, and judge whether the light intensity of the first container 2 and the second container 4 is consistent by observing the output voltage of the photodetector. If consistent, the output voltage is 0 at this time, otherwise, the output voltage is not 0. If the output voltage is not 0 and needs to be adjusted, the first aperture is adjusted until the output voltage is 0. At this time, it can be effectively ensured that the light intensity received by the first container 2 and the second container 4 before detection is consistent. Then, the ND mirror 3 and the white sugar standard solution are placed. At this time, the output voltage is observed again. If the output voltage is not 0, it indicates that the color value of the ND mirror 3 at this time is not equal to that of the white sugar standard solution. Then, the ND mirror 3 is replaced until the output voltage is 0. At this time, it indicates that the color value of the ND mirror 3 is the same as that of the white sugar standard solution. The ND mirror 3 can be used as a control sample for detection. Then, the white sugar standard solution is replaced with the white sugar solution to be detected. The photodetector will output a detection voltage. The detection voltage is converted into absorbance. Then, the white sugar with a known color value is detected by the white sugar color value rapid detection device to obtain the corresponding absorbance. The absorbance of the white sugar is compared with the known color value of the white sugar to obtain a color value correction coefficient k. The k value is a constant. The absorbance detected by the white sugar color value rapid detection device is multiplied by the k value to immediately convert the absorbance into the color value. That is, the k value is used to correct the relationship between the color value and the absorbance, so that the color value can be obtained by measuring the absorbance.

[0084] The above-mentioned rapid detection method of white sugar has the following effects and advantages: the color value of the white sugar to be detected can be quickly detected by using the above-mentioned portable white sugar color value rapid detection device and the conversion formula, and the detection has the advantages of high accuracy and fast speed. The ND mirror 3 is used as a control sample, which has the advantage of high stability, avoids the problem that the white sugar is easily oxidized when the white sugar standard solution is used as a control sample, and ensures the accuracy of detection.

[0085] As shown in Figure 3 The output voltage of the photodetector is calculated in the form of V=log(I1 / I2), so the output voltage of the photodetector is determined by the first photodiode 12 and the second photodiode 13 connected to the photodetector, wherein the first photodiode 12 and the second photodiode 13 can convert light intensity into corresponding I1 and I2. According to Lambert-Beer's law, absorbance A=log(incident light intensity / emitted light intensity), so I1 and I2 obtained by the photodetector can obtain the absorbance. At this time, the absorbance of the sample can be represented by the output voltage value, that is, the relationship between the absorbance A and the output voltage V is A=-V.

[0086] In this embodiment, the color value correction coefficient k obtained in step S3 is set in the microcontroller 8, and the A 目标 of the target white sugar to be detected is calculated by the microcontroller 8.目标 .

[0087] Thus, the color value C is subsequently obtained directly by the microcontroller 8 目标 , reducing the calculations.

[0088] Embodiment 3

[0089] The embodiment discloses a storage medium, the computer readable storage medium stores a computer program, the computer program is read and run by a processor, and a fast detection method for color value of white granulated sugar is realized.

[0090] The relative arrangement of the components and steps, numerical expressions, and numerical values set forth in the embodiments are not intended to limit the scope of the application unless otherwise specifically stated. It should also be understood that the dimensions of the various parts shown in the drawings are not drawn to scale for the sake of convenience in description. Techniques, methods, and equipment known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered part of the authorized description where appropriate. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limiting. Thus, other examples of the exemplary embodiments can have different values. It should be noted that similar reference numbers and letters refer to similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0091] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate and imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of the components themselves.

[0092] For purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "rear", "front", "vertical" and "horizontal" as can be perceived herein relative to the accompanying drawings refer to the orientation of the components being described. However, it is to be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device described herein relative to the other device or structure is inverted, then a spatially relative term such as "above" can be interpreted as meaning "below" or "below" can be interpreted as meaning "above". The device can also be oriented in other ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0093] In addition, it should be pointed out that the use of "first", "second" and the like words to define parts, only for the convenience of the corresponding parts to be distinguished, such as no other declaration, the above words have no special meaning, therefore can not be understood as limiting the scope of the present application.

[0094] The above only the preferred embodiments of the present application, and is not intended to limit the present application, for those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. A rapid detection method for the color value of white sugar, characterized in that: A portable white sugar color value rapid detection device is adopted. The portable white sugar color value rapid detection device includes a light seal, and a first container is provided inside the light seal. A first light source and an ND mirror are detachably installed inside the container. Monochromatic light from the first light source is incident perpendicularly into the surface of the ND mirror. A second container is arranged side by side with the second container. The second container is equipped with a second light source and a colorimetric cell. A colorimetric cuvette is placed inside the colorimetric cell. Monochromatic light from the second light source is incident perpendicularly onto the surface of the colorimetric cuvette. A photodetector includes a first photodiode and a second photodiode. The first photodiode receives light signals from a first light source after passing through an ND mirror, and the second photodiode receives light signals from a second light source after passing through a cuvette. An analog-to-digital converter circuit, which is connected to the photodetector, is used to calculate the optical signals of the first light source and the second light source and output voltage; A microcontroller connected to the analog-to-digital converter circuit, the microcontroller processing and transmitting the converted optical signal; The display system is connected to a microcontroller to receive and display color value data; The first light source is the same as the second light source. The first light source enters the first container through the first orifice, and the second light source enters the second container through the second orifice. The diameter of the first orifice is an adjustable orifice. The method includes the following steps: S1, adjusting the ND lens of the control sample, which includes: S101. Turn on the first light source and the second light source, and adjust the aperture of the first aperture so that the output voltage of the photodetector is zero; S102. Inject the white sugar standard solution with a color value set to 0 into the cuvette in the second container, wherein the white sugar standard solution is based on... According to the national standard configuration, the ND mirror is installed in the first container. When the output voltage of the photodetector is non-zero, the ND mirror needs to be replaced until the output voltage of the photodetector V0 = 0. At this time, the ND mirror is suitable as a control sample ND mirror. S2. Test the absorbance of the white sugar to be tested, including: S201, the white sugar to be tested is according to... The national standard is to prepare the white sugar solution to be tested. Replace the white sugar standard solution in the second container with the white sugar solution to be tested. S202. Read the output voltage V of the photodetector and convert the measured output voltage into absorbance A. The conversion formula is as follows: , I1 is the current measured by the first photodiode, and I2 is the current measured by the second photodiode. The light intensity obtained by the first photodiode is converted into I1 by the photodetector, and the light intensity obtained by the second photodiode is converted into I2. S3. Calculate the color value, which includes: S301. Use refined, superior, first-grade, and second-grade white granulated sugar as the standard sugar, according to... The standard color value CV1 was obtained by testing according to the color value determination method in the national standard. S301. According to the above step S2, obtain the standard absorbance AV1 of four grades of white sugar: refined, superior, first grade, and second grade. According to the formula CV1=kAV1, obtain the value of the color value correction coefficient k. S302. Calculate the color value of the target white sugar according to the color value correction coefficient k. The calculation method is C target = kA target, where C target is the color value of the target white sugar and A target is the absorbance of the target white sugar obtained in step S2.

2. The rapid detection method for the color value of white sugar according to claim 1, characterized in that: In step S3, the obtained color value correction coefficient k is set in the microcontroller. After obtaining the target A of the white sugar to be tested, the target C is calculated by the microcontroller.

3. The rapid detection method for the color value of white granulated sugar according to claim 1, characterized in that: The analog-to-digital conversion circuit consists of a logarithmic operational amplifier and an A / D converter. The logarithmic operational amplifier converts the optical signals received by the first photodiode and the second photodiode into analog signals, and the A / D converter converts the analog signals into digital signals.

4. The rapid detection method for the color value of white sugar according to claim 1, characterized in that: The cuvette is a quartz cuvette.

5. The rapid detection method for the color value of white sugar according to claim 1, characterized in that: Both the first light source and the second light source are monochromatic laser light sources with the same power and a fixed wavelength of 420nm.

6. The rapid detection method for the color value of white sugar according to claim 1, characterized in that: The microcontroller uses the STC89C52 single-chip microcontroller.

7. The rapid detection method for the color value of white granulated sugar according to claim 1, characterized in that: Both the first photodiode and the second photodiode are silicon photodiodes.

8. A storage medium, characterized in that: A computer-readable storage medium stores a computer program that is read and executed by a processor to implement the rapid detection method for the color value of white sugar according to any one of claims 1-7.

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