Colorimetric analyzer
Through color vision recognition technology and RGB algorithm colorimetric analyzer, the problem of spectrophotometry being greatly affected by the environment is solved, and efficient colorimetric analysis is achieved in general indoor environments, reducing maintenance costs and accuracy requirements.
Patent Information
- Application Number
- CN202420781807.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-16
AI Technical Summary
Existing spectrophotometric colorimetric instruments are greatly affected by the environment, require specific environments and preheating time, have high maintenance costs, and limited measurement accuracy.
A colorimetric analyzer based on color vision recognition technology is used to obtain image data of colored solutions, use RGB recognition algorithm to judge the solution concentration, combine standard solution and color card data to avoid miscellaneous light interference, and use LED light sources and cameras to obtain uniform light.
It realizes efficient colorimetric analysis that can be used without preheating in general indoor environments, reduces maintenance costs and environmental requirements, and improves measurement accuracy.
Smart Images
Figure CN222280462U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of inspection and detection, in particular to a colorimetric analyzer. Background Art
[0002] Colorimetry is a commonly used method for detecting the concentration of substances. Its principle is based on the color reaction that produces colored compounds. It uses the proportional relationship between the color of the colored substance solution and its concentration (Lambert-Beer law) to determine the concentration of the component to be tested by comparing or measuring the color depth of the colored substance solution.
[0003] Early colorimetry used manual visual colorimetry, while modern colorimetry mostly uses instrumental photoelectric colorimetry (spectrophotometry). Spectrophotometry is a method of using a spectrophotometer to perform qualitative and quantitative analysis of a substance by measuring the absorbance of light at a specific wavelength or within a certain wavelength range.
[0004] However, spectrophotometry has certain defects: first, the spectrophotometer is basically composed of a light source system, a spectroscopic system, an absorption system and a detection system. It is greatly affected by the environment and needs to be used in a relatively clean environment with stable temperature and humidity to achieve measurement accuracy. Secondly, due to the characteristics of the instrument, the spectrophotometer generally needs to be preheated for 30 minutes before it can perform measurements. Furthermore, since the spectrophotometer is relatively precise, its maintenance cost is high.
[0005] Based on the above, the industry needs a new colorimetric method and colorimetric instrument to solve the above technical defects. Utility Model Content
[0006] The purpose of the utility model is to provide a colorimetric analyzer, specifically a colorimetric analyzer based on color visual recognition technology, to solve the problems raised in the above background technology.
[0007] In order to solve the above technical problems, the utility model proposes a new colorimetric scheme, that is, first obtaining image data of a colored solution, and then judging the concentration of the substance to be tested in the solution by the chromaticity and grayscale values of the image data. The color of the solution can be identified by the RGB recognition algorithm in the prior art, and the concentration of the component to be tested can be determined by comparing the RGB values of the sample solution and the standard solution.
[0008] Specifically, the colorimetric analyzer includes a transparent container for containing a colored solution; and also includes a light source and a camera. The light source is used to project light to the transparent container to assist the camera in acquiring image data of the colored solution in the transparent container. By comparing the acquired image data with the standard solution and the color card, the concentration of the component to be measured in the solution can be obtained. Specifically, the RGB recognition algorithm can be used to obtain the accurate chromaticity value of the image data, and the chromaticity value is compared with the basic color card, and the component concentration represented by the chromaticity value is converted according to the component concentration represented by the standard solution.
[0009] Preferably, the colorimetric analyzer further comprises a light-proof container, which is used to accommodate the transparent container to prevent stray light from interfering with the image data of the solution, thereby improving the measurement accuracy.
[0010] Preferably, the colorimetric analyzer also includes a colored card, and the camera is also used to obtain image data of the color card. Acquiring the image data of the color card and the colored solution simultaneously can avoid the difference in image data under different conditions, thereby improving measurement accuracy.
[0011] Preferably, the colorimetric analyzer further includes a diffuser plate, which is used to diffuse the light emitted by the light source so that the light is evenly projected onto the transparent container, thereby avoiding uneven chromaticity of the acquired image.
[0012] Preferably, the colorimetric analyzer also includes a frame for supporting a transparent container; and also includes a sliding rail and a slider that are slidably connected, the sliding rail is fixedly placed in the opaque container, and the slider is fixedly connected to the frame, so that the frame can be displaced between the inside and outside of the opaque container under the action of external force, so as to facilitate the replacement of the transparent container.
[0013] Preferably, a stopper is formed at the end of the slide rail to prevent the slider from falling out of the slide rail when displacing.
[0014] Preferably, the colorimetric analyzer further comprises a lock buckle and a lock head, which are fixed relatively in the light-proof container and on the frame respectively, so as to lock the frame and the light-proof container when the frame is placed in the light-proof container.
[0015] Preferably, the colorimetric analyzer further comprises an opening and a door panel, wherein the opening is provided on the light-proof container so that the frame can enter and exit the light-proof container through the opening, and the door panel is fixedly connected to the frame so as to close the opening.
[0016] Preferably, the transparent container is a plurality of linearly arranged tubes, the frame is composed of an upper plate, a lower plate and a connecting plate, and a through hole is linearly opened on the upper plate for the transparent container to pass through, so that one end of the transparent container is supported by the lower plate and the other end is limited by the through hole, and the middle part is exposed and directly opposite to the light source and the camera.
[0017] Preferably, the light source is composed of a plurality of LED light strips, and the plurality of LED light strips are arranged linearly.
[0018] Compared with the prior art, the beneficial effects achieved by the utility model are: a colorimetric analyzer proposed by the utility model, using the corresponding colorimetric method, has a simple and efficient effect; the corresponding colorimetric analyzer has low environmental requirements, does not require specific temperature and humidity, can be used in a general indoor environment, and can be used directly without preheating; furthermore, due to its simple structure and simple operation, the maintenance cost is also low. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0020] Figure 1 This is a three-dimensional diagram of the internal structure of a colorimetric analyzer in an embodiment of the utility model;
[0021] Figure 2 is a three-dimensional diagram of a light-proof container in an embodiment of the utility model;
[0022] Figure 3 It is a structural diagram of the bottom plate in the embodiment of the utility model;
[0023] Figure 4 It is a structural diagram of a side wall panel with a light source installed in an embodiment of the utility model;
[0024] Figure 5 It is a structural diagram of the frame in the embodiment of the utility model;
[0025] In the figure:
[0026] Transparent container 1;
[0027] Light source 2;
[0028] Camera 3;
[0029] A light-proof container 4, a bottom plate 4-1, a profile 4-2, a side wall plate 4-3, and an upper cover 4-4;
[0030] Color card 5;
[0031] Diffuser 6;
[0032] Frame 7, upper plate 7-1, lower plate 7-2, connecting plate 7-3;
[0033] Slide rail 8, stop 8-1;
[0034] Slider 9;
[0035] Lock 10;
[0036] Lock 11;
[0037] Door panel 12;
[0038] Mounting plate 13;
[0039] Light stand 14. DETAILED DESCRIPTION
[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0041] Embodiment: This embodiment provides a best implementation scheme of a colorimetric analyzer.
[0042] Specifically, Figure 1 The colorimetric analyzer includes a transparent container 1, which is used to contain a colored solution. In this embodiment, the transparent container 1 is a cylindrical tube with a cover to seal the solution. In other embodiments, the transparent container 1 may also be a square tube.
[0043] Further, such as Figure 1 The colorimetric analyzer also includes a light source 2 and a camera 3. The light source 2 is used to project light to the transparent container 1 to assist the camera 3 in obtaining image data of the colored solution in the transparent container 1. In this embodiment, the light source 2 is composed of a plurality of LED light bars, and the plurality of LED light bars are arranged linearly. After the camera 3 obtains the image data, the concentration of the component in the solution to be tested is determined by analyzing the chromaticity and other information of the image.
[0044] Further, such as Figures 1-2 The colorimetric analyzer also includes a light-proof container 4, which is used to accommodate the transparent container 1 to prevent stray light from interfering with the image data of the solution. In this embodiment, the light-proof container 4 is a square box body, which includes a bottom plate 4-1 and a profile 4-2 fixed on the bottom plate 4-1, and a side wall plate 4-3 inserted in the profile gap as the box body. The box body also includes an upper cover 4-4 to make the box body a sealed light-proof container.
[0045] Further, such as Figure 3 The colorimetric analyzer also includes a colored card 5. The camera 3 is also used to obtain image data of the color card 5. The image data of the color card 5 is used to compare with the image data of the colored solution as a comparison basis for judging the image data of the colored solution.
[0046] Further, such as Figure 3 The color card 5 is fixedly mounted in the light-proof container 4 through the mounting plate 13 , specifically, fixed on the bottom plate 4 - 1 and located between the transparent container 1 and the camera 3 .
[0047] Further, such as Figure 4 The colorimetric analyzer also includes a diffuser plate 6 (the diffuser plate 6 is Figure 4 The diffuser plate 6 is used to diffuse the light emitted by the light source 2 so that the light is evenly projected onto the transparent container 1. The diffuser plate 6 is located between the transparent container 1 and the light source 2. The diffuser plate 6 and the light source 2 are both fixed to a side wall plate 4-3 through a lamp holder 14.
[0048] Further, such as Figure 5 The colorimetric analyzer also includes a frame 7, which is used to support the transparent container 1. In this embodiment, a plurality of transparent containers 1 are linearly arranged on the frame 7. The frame 7 is composed of an upper plate 7-1, a lower plate 7-2 and a connecting plate 7-3. The connecting plate 7-3 is used to connect the upper plate 7-1 and the lower plate 7-2. A through hole is linearly opened on the upper plate 7-1 for the transparent container 1 to pass through, so that one end of the transparent container 1 is supported by the lower plate 7-2, and the other end is limited by the through hole, and the middle part is exposed and directly opposite to the light source 2 and the camera 3.
[0049] Furthermore, in other embodiments, in order to make the distances between the plurality of transparent containers 1 and the camera 3 equal so as to achieve accurate acquisition of image data, the frame 7 is arranged to be arc-shaped, and the arc is concave toward the camera 3 .
[0050] Further, such as Figure 3 The colorimetric analyzer also includes a slide rail 8 and a slider 9 that are slidably connected. The slide rail 8 is fixedly placed in the opaque container 4, specifically fixed on the bottom plate 4-1. The slider 9 is fixedly connected to the bottom of the frame 7, so that the frame 7 can be displaced between the inside and outside of the opaque container 4 under the action of external force, so as to facilitate the replacement of the transparent container 1.
[0051] Further, such as Figure 3 A stopper 8-1 is formed at the end of the slide rail 8 to prevent the slider 9 from falling out of the slide rail 8 during displacement.
[0052] Further, such as Figure 3 , 5 The colorimetric analyzer also includes a lock buckle 10 and a lock head 11, which are respectively fixed in the opaque container 4 and the frame 7 relative to each other, so as to lock the frame 7 with the opaque container 4 when the frame 7 is placed in the opaque container 4. Specifically, in this embodiment, the lock buckle 10 is fixed on the bottom plate 4-1, and the lock head 11 is fixedly connected to the frame 7.
[0053] Further, such as Figure 5 The colorimetric analyzer also includes an opening and a door panel 12. The opening is opened on the light-proof container 4, specifically on a side wall panel 4-3, so that the frame 7 can enter and exit the light-proof container 4 through the opening. The door panel 12 is fixedly connected to the frame 7 to close the opening.
[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0055] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A colorimetric analyzer, characterized in that: include: A transparent container, wherein the transparent container is used to contain a colored solution; and a light source and a camera, wherein the light source is used to project light to the transparent container to assist the camera in acquiring image data of the colored solution in the transparent container; and a light-proof container, wherein the light-proof container is used to accommodate the transparent container so as to prevent stray light from interfering with the image data of the solution.
2. A colorimetric analyzer according to claim 1, characterized in that: A color card is also included, and the camera is also used to obtain image data of the color card.
3. A colorimetric analyzer according to claim 1, characterized in that: A diffuser plate is also included, and the diffuser plate is used to diffuse the light emitted by the light source so that the light is evenly projected onto the transparent container.
4. A colorimetric analyzer according to any one of claims 1 to 3, characterized in that: Also included are: A frame, the frame is used to support the transparent container; And a sliding rail and a slider that are slidably connected, the sliding rail is fixedly placed in the opaque container, and the slider is fixedly connected to the frame, so that the frame can be displaced between the inside and outside of the opaque container under the action of external force, so as to facilitate the replacement of the transparent container.
5. A colorimetric analyzer according to claim 4, characterized in that: A stopper is formed at the end of the slide rail to prevent the slider from escaping from the slide rail when displacing.
6. A colorimetric analyzer according to claim 4, characterized in that: It also includes a lock buckle and a lock head, which are fixed relatively in the light-proof container and on the frame respectively, so as to lock the frame and the light-proof container when the frame is placed in the light-proof container.
7. A colorimetric analyzer according to claim 4, characterized in that: It also includes an opening and a door panel, wherein the opening is provided on the light-proof container so that the frame can enter and exit the light-proof container through the opening, and the door panel is fixedly connected to the frame so as to close the opening.
8. A colorimetric analyzer according to claim 4, characterized in that: The transparent container is a plurality of linearly arranged tubes, and the frame is composed of an upper plate, a lower plate and a connecting plate. A through hole is linearly opened on the upper plate for the transparent container to pass through, so that one end of the transparent container is supported by the lower plate, and the other end is limited by the through hole, with the middle part exposed and facing the light source and the camera.
9. A colorimetric analyzer according to claim 8, characterized in that: The light source is composed of a plurality of LED light strips, and the plurality of LED light strips are arranged linearly.