Grain aflatoxin detection equipment based on machine vision
By introducing positioning and replacement components into the grain aflatoxin detection equipment, the imaging problem caused by unstable sample placement was solved, thereby improving the accuracy and applicability of the detection.
Patent Information
- Application Number
- CN202422902727.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing machine vision-based aflatoxin detection equipment for grains suffers from poor imaging results due to unstable sample placement, affecting detection accuracy.
The system employs positioning and replacement components, including positioning frames, connecting rods, positioning blocks, and electric telescopic rods, to position and center the grain placement tray from multiple angles, ensuring that the sample remains stable in the center of the image acquisition, processing, and analysis module.
It improves the accuracy of detection and the practicality of the device, is applicable to grain placement trays of different shapes, ensures imaging effect, and enhances the stability and accuracy of detection.
Smart Images
Figure CN223742323U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grain testing equipment technology, and in particular to a grain aflatoxin detection device based on machine vision. Background Technology
[0002] Aflatoxin is a potent carcinogen produced by Aspergillus flavus. It is extremely toxic, primarily damaging the liver, causing hepatocyte necrosis, hemorrhage, and bile duct hyperplasia. It has a significant carcinogenic effect. Aflatoxin contaminates grains, oils, and their products, such as peanuts, peanut oil, corn, rice, and cottonseed. Milk and salted fish are also susceptible to contamination.
[0003] Therefore, if grains contain excessive levels of aflatoxin, it will seriously threaten people's health. Testing can promptly identify and address grains containing excessive levels of aflatoxin, preventing them from entering the market and thus protecting consumers' health rights.
[0004] Existing machine vision-based aflatoxin detection equipment for grains suffers from poor imaging results due to unstable sample placement, which affects the accuracy of detection. To address this issue, a machine vision-based aflatoxin detection device for grains is proposed. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a machine vision-based aflatoxin detection device for grains, aiming to improve the problem in the prior art where unstable sample placement leads to poor imaging effect of the detection device, thus affecting the accuracy of the detection.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: It includes an operating platform and a grain placement tray. A mounting shell is fixedly connected to the top of the operating platform. An image acquisition, processing, and analysis module is fixedly connected to the top of the mounting shell. Support plates are uniformly fixedly connected to the top of the operating platform. A positioning component is provided on the top of the support plate. A replacement component is provided on the top of the positioning component. A driving component is fixedly connected to the bottom of the positioning component. The positioning component includes a support column fixedly connected to the top of the operating platform. A positioning frame is rotatably connected to the top of the support column. A connecting rod is rotatably connected to the surface of the positioning frame. A positioning block is rotatably connected to the other end of each connecting rod. A positioning plate is fixedly connected to the top of the support plate. A sliding groove is intersectingly formed on the central surface of the positioning plate.
[0007] As a further description of the above technical solution: the replacement component includes a clamping plate slidably connected to the top of the positioning block, and anti-slip pads are fixedly connected to the surface of the clamping plate. Limiting grooves are uniformly opened on the top surface of the positioning block.
[0008] As a further description of the above technical solution: the driving component includes a first fixing block fixedly connected to the bottom of the positioning plate, a second fixing block fixedly connected to the bottom of the positioning block, and an electric telescopic rod fixedly connected between the opposing surfaces of the first fixing block and the second fixing block.
[0009] As a further description of the above technical solution: the grain placement tray is placed on the top surface of the positioning plate, and the clamping plate is located on the four sides of the grain placement tray and centers the grain placement tray.
[0010] As a further description of the above technical solution: the image acquisition, processing and analysis module is located above the center of the positioning plate, and the image acquisition, processing and analysis module is used to acquire, process and analyze images of grain samples inside the grain placement tray;
[0011] As a further description of the above technical solution: the positioning frame is cross-shaped, and one end of each connecting rod is rotatably connected to the surface of each end of the positioning frame;
[0012] As a further description of the above technical solution: the positioning block is I-shaped, and the waist of the positioning block is slidably connected to the inside of the groove;
[0013] As a further description of the above technical solution: the bottom of the clamping plate is slidably connected inside the limiting groove, and the first fixing block and the second fixing block are on the same horizontal line and relatively far apart.
[0014] This utility model has the following beneficial effects:
[0015] 1. In this utility model, the grain placement tray is positioned in multiple directions by setting the positioning component. The simultaneous movement of the clamping plate can squeeze the grain placement tray towards the center of the positioning plate, ensuring the stability of the test sample placement and keeping the test sample in the center below the image acquisition, processing and analysis module. This ensures the imaging effect of the image acquisition, processing and analysis module and indirectly improves the accuracy of the test.
[0016] 2. In this utility model, by changing the component settings and by sliding and inserting the clamping plate, the clamping plate can be quickly installed and positioned. At the same time, this setting can also quickly replace the clamping plate, so that the device can be used for grain placing trays of different shapes, thereby improving the practicality of the device. Attached Figure Description
[0017] Figure 1 This is a three-dimensional schematic diagram of a machine vision-based aflatoxin detection device for grains proposed in this utility model;
[0018] Figure 2This is a schematic diagram of the positioning component of a machine vision-based aflatoxin detection device for grains proposed in this utility model.
[0019] Figure 3 This is a schematic diagram of the structure of a replacement component of a machine vision-based aflatoxin detection device for grains proposed in this utility model.
[0020] Legend:
[0021] 1. Operating platform; 2. Mounting housing; 3. Image acquisition, processing and analysis module; 4. Grain placement tray; 5. Support plate; 6. Positioning component; 61. Support column; 62. Positioning frame; 63. Connecting rod; 64. Positioning block; 65. Positioning plate; 66. Slide groove; 7. Replacement component; 71. Clamping plate; 72. Anti-slip pad; 73. Limiting groove; 8. Drive component; 81. First fixing block; 82. Second fixing block; 83. Electric telescopic rod. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Reference Figure 1 - Figure 3This utility model provides an embodiment comprising an operating platform 1 and a grain placement tray 4. A mounting housing 2 is fixedly connected to the top of the operating platform 1. An image acquisition, processing, and analysis module 3 is fixedly connected to the top of the mounting housing 2. Support plates 5 are uniformly fixedly connected to the top of the operating platform 1. A positioning component 6 is provided on the top of the support plate 5, and a replacement component 7 is provided on the top of the positioning component 6. A drive component 8 is fixedly connected to the bottom of the positioning component 6. The positioning component 6 includes a support column 61 fixedly connected to the top of the operating platform 1. A positioning frame 62 is rotatably connected to the top of the support column 61. A connecting rod 63 is rotatably connected to the surface of the positioning frame 62, and a positioning block 64 is rotatably connected to the other end of each connecting rod 63. A positioning plate 65 is fixedly connected to the top of the support plate 5, and a groove is intersectingly formed on the central surface of the positioning plate 65. The image acquisition, processing, and analysis module 3 is located above the center of the positioning plate 65. This module is used to acquire, process, and analyze images of the grain sample inside the grain placement tray 4. The positioning frame 62 is cross-shaped, with one end of each connecting rod 63 rotatably connected to the surface of each end of the positioning frame 62. The positioning block 64 is I-shaped, with its waist slidably connected inside the slide groove 66. Through the positioning components 6, the grain placement tray 4 is positioned in multiple directions. The simultaneous movement of the clamping plate 71 can press the grain placement tray 4 towards the center of the positioning plate 65, ensuring stable placement of the sample while keeping it always centered below the image acquisition, processing, and analysis module 3. This ensures the imaging effect of the image acquisition, processing, and analysis module 3 and indirectly improves the accuracy of the detection.
[0024] Reference Figure 1 - Figure 3 The drive assembly 8 includes a first fixing block 81 fixedly connected to the bottom of the positioning plate 65, a second fixing block 82 fixedly connected to the bottom of the positioning block 64, and an electric telescopic rod 83 fixedly connected between the opposing surfaces of the first fixing block 81 and the second fixing block 82. The grain placement tray 4 is placed on the top surface of the positioning plate 65, and the clamping plate 71 is located on the four sides of the grain placement tray 4 and centers the grain placement tray 4. The bottom of the clamping plate 71 is slidably connected to the inside of the limiting groove 73. The first fixing block 81 and the second fixing block 82 are on the same horizontal line and are relatively far apart. By changing the setting of the assembly 7, the clamping plate 71 can be quickly installed and positioned by sliding and inserting it. At the same time, the clamping plate 71 can also be quickly replaced so that the device can be adapted to grain placement trays 4 of different shapes, thereby improving the practicality of the device.
[0025] Working principle: When it is necessary to test for aflatoxin in grain, first prepare the grain sample to be tested, crush the grain sample and add the extraction solution, then perform vibration extraction. Place the extracted sample evenly into the grain placement tray 4, then place the grain placement tray 4 on the top surface of the positioning plate 65. Then, activate the electric telescopic rod 83, which drives the second fixing block 82 to move towards the center of the positioning plate 65, thereby causing the positioning frame 62 to rotate. When the positioning frame 62 rotates, the connecting rod 63 drives the four positioning blocks 64 to move simultaneously towards the center of the positioning plate 65, thereby causing the clamping plate 71 to move towards the center of the positioning plate 65. As the clamping plate 71 moves simultaneously, the grain placement tray 4 can be positioned in multiple directions using the anti-slip pad 72. The simultaneous movement of the clamping plate 71 can press the grain placement tray 4 towards the center of the positioning plate 65, ensuring that the test sample is not unstable while keeping it in the center below the image acquisition, processing and analysis module 3. This ensures the imaging effect of the image acquisition, processing and analysis module 3 and indirectly improves the accuracy of the test. When the grain placement tray 4 needs to be replaced with a bucket, the clamping plate 71 can be pulled out from the inside of the limiting groove 73 and replaced with an arc-shaped clamping plate 71, which makes it easier to position and clamp the bucket-shaped grain placement tray 4.
[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A machine vision-based aflatoxin detection device for grain, comprising an operating platform (1) and a grain placing disc (4), characterized in that: The operating platform (1) top fixedly connected with the installation shell (2), the inside top of the installation shell (2) is fixedly connected with image acquisition processing analysis module (3); The top of the operating platform (1) is uniformly fixedly connected with the support plate (5), the top of the support plate (5) is provided with the positioning assembly (6), the top of the positioning assembly (6) is provided with the replacement assembly (7), the bottom of the positioning assembly (6) is fixedly connected with the drive assembly (8), the positioning assembly (6) includes the support column (61) fixedly connected to the top of the operating platform (1), the top of the support column (61) is rotatably connected with the positioning frame (62), the surface of the positioning frame (62) is rotatably connected with the connecting rod (63), the other end of the connecting rod (63) is rotatably connected with the positioning block (64), the top of the support plate (5) is fixedly connected with the positioning plate (65), the central surface of the positioning plate (65) is crosswise and perpendicularly provided with the sliding groove (66).
2. The machine vision-based aflatoxin detection device for grain according to claim 1, characterized in that: The replacement assembly (7) includes the clamping plate (71) slidably connected to the top of the positioning block (64), the surface of the clamping plate (71) is fixedly connected with the antiskid pad (72), the top surface of the positioning block (64) is uniformly provided with the limiting groove (73).
3. The machine vision-based aflatoxin detection device for grain according to claim 2, characterized in that: The drive assembly (8) includes the first fixed block (81) fixedly connected to the bottom of the positioning plate (65), the bottom of the positioning block (64) is fixedly connected with the second fixed block (82), the surface opposite to the first fixed block (81) and the second fixed block (82) is fixedly connected with the electric telescopic rod (83).
4. The machine vision-based aflatoxin detection device for grain according to claim 2, characterized in that: The grain placing disc (4) is placed on the top surface of the positioning plate (65), the clamping plate (71) is located at the four edges of the grain placing disc (4), and the grain placing disc (4) is centrally positioned.
5. The machine vision-based aflatoxin detection apparatus for grains according to claim 1, wherein: The image acquisition processing analysis module (3) is located above the center of the positioning plate (65), and the image acquisition processing analysis module (3) is used for image acquisition processing analysis of the grain sample in the grain placing disc (4).
6. The machine vision-based aflatoxin detection device for grain according to claim 1, characterized in that: The positioning frame (62) is cross-shaped, and one end of the connecting rod (63) is rotatably connected to the surface of each end of the positioning frame (62).
7. The machine vision-based aflatoxin detection device for grain according to claim 1, characterized in that: The positioning block (64) is H-shaped, and the waist of the positioning block (64) is slidably connected in the inside of the sliding groove (66).
8. The machine vision-based aflatoxin detection apparatus for grain according to claim 3, characterized in that: The bottom of the clamping plate (71) is slidably connected in the inside of the limiting groove (73), the first fixed block (81) and the second fixed block (82) are on the same horizontal line and relatively far away.