Hyperspectrum-based multi-stage sorting equipment for traditional Chinese medicine decoction pieces

Abstract

The invention relates to the technical field of multi-stage sorting of traditional Chinese medicine decoction pieces, and particularly discloses multi-stage sorting equipment for traditional Chinese medicine decoction pieces based on hyperspectrum, which comprises a bracket, an outer housing is mounted at the top of the bracket, and an image acquisition device is arranged in the outer housing; the image acquisition device comprises a vibration feeder, a high-speed conveyor belt, a hyperspectral camera, a light source and a control screen; a hyperspectral camera is adopted for detection, and the recognition precision is high. The vibrating type continuous feeding technology is adopted, and decoction pieces can be evenly distributed; compared with other sorting devices, the pneumatic sorting device can sort the traditional Chinese medicinal materials and the decoction pieces more quickly and accurately, and the efficiency and accuracy of sorting the traditional Chinese medicinal materials and the decoction pieces can be remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-stage sorting of Chinese herbal medicine slices, and in particular to multi-stage sorting equipment for Chinese herbal medicine slices based on hyperspectral. Background Art

[0002] In the sorting process of Chinese medicinal materials such as Astragalus and Angelica, there are generally problems such as low sorting accuracy, slow operation speed, high labor costs, and lack of intelligent sorting equipment. Therefore, conducting quality evaluation and intelligent sorting technology research on Chinese medicinal materials such as Astragalus and Angelica, and developing intelligent sorting equipment, is an important way to promote the development of the Chinese medicinal materials industry.

[0003] In order to achieve fast and efficient sorting of Chinese herbal medicine slices, it is necessary to have operational goals such as uniform feeding, quality judgment and fast sorting. The Chinese herbal medicine slice sorting devices currently on the market can only perform simple sorting and have not yet achieved the function of grading. In addition, existing devices usually rely on ordinary cameras to identify the shape, size and color of the slices, and cannot effectively evaluate their intrinsic quality and efficacy. At the same time, these sorting devices have complex structures and cumbersome operations, resulting in high operating costs and difficult maintenance. For this reason, a multi-level sorting equipment for Chinese herbal medicine slices based on hyperspectral is provided. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-stage sorting equipment for Chinese herbal medicine slices based on hyperspectral to solve the problems raised by the above-mentioned background technology in view of the defects of the prior art.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a hyperspectral-based multi-stage sorting equipment for Chinese herbal medicine slices, comprising a bracket, an outer cover shell is installed on the top of the bracket, an image acquisition device is arranged inside the outer cover shell, and the image acquisition device comprises a vibrating feeder, a high-speed conveyor belt, a hyperspectral camera, a light source and a control screen;

[0006] A vibrating feeder is fixedly connected to one side of the top of the bracket, and the vibrating feeder is connected to a high-speed conveyor belt. The high-speed conveyor belt is located at the center of the top of the bracket. A photoelectric sensor and a hyperspectral camera are arranged on the side of the high-speed conveyor belt. A light source is arranged on the top of the high-speed conveyor belt. A sorting device is installed on the middle layer of the bracket. The feed port of the sorting device is immediately connected to the end of the high-speed conveyor belt. A discharging belt is extended from the bottom of the sorting device. A discharging port is arranged at the end of the discharging belt, and a finished product box is arranged at the bottom of the discharging port.

[0007] As a preferred technical solution of the present invention, a control panel is installed on one side of the top of the bracket, a control cabinet is also installed on the middle layer of the bracket, the hopper is installed on one side of the outer cover shell, and the feed port of the hopper is tightly connected with the vibrating feeder.

[0008] As a preferred technical solution of the present invention, the vibrating feeder is composed of a vibrating clamp, a support frame, a feed trough and a vibrating motor installed at the bottom of the vibrating clamp, the feed trough is fixedly connected to the support frame with bolts, the vibrating clamp is fixed to the lower side of the feed trough with bolts, and the support frame is fixedly connected to the bracket.

[0009] As a preferred technical solution of the present invention, the high-speed conveyor belt is composed of a belt, a stepper motor, a hexagon socket cylindrical screw and a belt mounting frame. The stepper motor is fixed to the belt mounting frame by the hexagon socket cylindrical screw. Rollers are provided at both ends of the belt mounting frame. The roller at one end of the belt mounting frame is connected to the main shaft of the stepper motor. The belt is arranged on two rollers, and the belt is driven to rotate by the rotation of the rollers.

[0010] As a preferred technical solution of the present invention, the photoelectric sensor is installed on a fixed bracket above both sides of the high-speed conveyor belt, the hyperspectral camera is installed at the center position directly above the high-speed conveyor belt through the fixed bracket, and the light source is symmetrically installed on both sides below the hyperspectral camera through the fixed bracket to uniformly irradiate the material on the belt at an angle of 45°.

[0011] As a preferred technical solution of the present invention, the sorting device consists of a feed port, a nozzle, a four-way port, a connecting pipe, and a discharge belt; the feed port is fixedly connected to the top of the four-way port, the nozzle is fixed on the four outer corners of the feed port, and the connecting pipe is fixedly connected to the bottom of the four-way port.

[0012] As a preferred technical solution of the present invention, four nozzles are provided, and all are fixedly connected to the four corners outside the four-part opening by means of hexagonal thin nuts.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention adopts a hyperspectral camera for detection, and has high recognition accuracy.

[0015] 2. The present invention adopts vibrating continuous feeding technology, so the medicinal pieces can be evenly distributed.

[0016] 3. Compared with other sorting devices, the pneumatic sorting device of the present invention can perform sorting faster and more accurately, and can significantly improve the efficiency and accuracy of sorting Chinese medicinal materials and decoction pieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the composition of the multi-stage sorting equipment of Chinese herbal medicine slices based on hyperspectral according to the present invention;

[0018] Figure 2 It is a partial assembly diagram of the present invention;

[0019] Figure 3 It is a schematic diagram of the composition of the vibrating feeder of the present invention;

[0020] Figure 4 It is a schematic diagram of the composition of the hyperspectral camera detection device of the present invention;

[0021] Figure 5 It is a schematic diagram of the high-speed conveyor belt composition of the present invention;

[0022] Figure 6 It is a schematic diagram of the composition of the sorting device of the present invention;

[0023] Figure 7 It is a schematic diagram of the composition of the four-port device of the present invention;

[0024] Figure 8 This is a workflow diagram of the multi-stage sorting equipment for Chinese herbal medicine slices based on hyperspectral according to the present invention;

[0025] Fig. 9 is a hyperspectral image processing flow chart of the present invention;

[0026] Fig.10 It is a schematic diagram of the principle of the multi-stage sorting equipment of Chinese herbal medicine slices based on hyperspectral according to the present invention.

[0027] In the figure: 1. bracket; 2. vibrating feeder; 21. vibrating clip; 22. support frame; 23. feed trough; 3. high-speed conveyor belt; 31. belt; 32. stepping motor; 33. hexagon socket cylindrical screw; 34. belt mounting bracket; 4. photoelectric sensor; 5. hyperspectral camera; 6. light source; 7. control panel; 8. sorting device; 81. feed port; 82. nozzle; 83. four-point port; 84. connecting pipe; 85. hexagonal thin nut; 9. discharge belt; 10. control cabinet; 11. discharge port; 12. finished product box; 13. outer cover shell; 14. hopper. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0029] Example: See Figure 1-8The present invention provides a technical solution: a multi-stage sorting equipment for Chinese herbal medicine slices based on hyperspectral, comprising a bracket 1, an outer cover shell 13 is installed on the top of the bracket 1, an image acquisition device is arranged inside the outer cover shell 13, and the image acquisition device comprises a vibrating feeder 2, a high-speed conveyor belt 3, a hyperspectral camera 5, a light source 6 and a control screen 7; the image acquisition device uses embedded technology, combines the communication protocols and data interfaces of various execution components and sensors, and develops an intelligent control system with unified data processing and collaborative control functions, and users can quickly set parameters and monitor the equipment status in real time through a touch-type industrial control screen.

[0030] A vibrating feeder 2 is fixedly connected to one side of the top of the bracket 1. The vibrating feeder 2 is connected to the high-speed conveyor belt 3. The material passing through the vibrating feeder 2 enters the high-speed conveyor belt 3 for transportation. The high-speed conveyor belt 3 is located at the top center of the bracket 1. A photoelectric sensor 4 and a hyperspectral camera 5 are arranged on the side of the high-speed conveyor belt 3. The hyperspectral camera 5 is used to photograph the material. A light source 6 is arranged on the top of the high-speed conveyor belt 3 to provide lighting. A sorting device 8 is installed in the middle layer of the bracket 1. The feed port of the sorting device 8 is immediately connected to the end of the high-speed conveyor belt 3. The high-speed conveyor belt 3 transports the material into the sorting device 8 for sorting. A discharging belt 9 extends from the bottom of the sorting device 8. A discharging port 11 is arranged at the end of the discharging belt 9. A finished product box 12 is arranged at the bottom of the discharging port 11 for storing materials.

[0031] A control panel 7 is installed on one side of the top of the bracket 1, and a control cabinet 10 is also installed on the middle layer of the bracket 1. A hopper 14 is installed on one side of the outer cover shell 13. The feed port of the hopper 14 is closely connected with the vibrating feeder 2, and the material fed through the hopper 14 enters the vibrating feeder 2.

[0032] The vibrating feeder 2 is composed of a vibrating clamp 21, a support frame 22, a feeding trough 23 and a vibrating motor installed at the bottom of the vibrating clamp 21. The feeding trough 23 is fixedly connected to the support frame 22 with bolts, the vibrating clamp 21 is fixedly connected to the lower side of the feeding trough 23 with bolts, and the support frame 22 is fixedly connected to the bracket 1. The vibrating motor is used to drive the vibrating clamp 21 to vibrate so that the Chinese herbal medicine slices can be evenly spread in the groove of the feeder.

[0033] The high-speed conveyor belt 3 is composed of a belt 31, a stepper motor 32, a hexagon socket cylindrical screw 33 and a belt mounting frame 34. The stepper motor 32 is fixed to the belt mounting frame 34 by the hexagon socket cylindrical screw 33. Rollers are arranged at both ends of the belt mounting frame 34. The roller at one end of the belt mounting frame 34 is connected to the main shaft of the stepper motor 32. The belt 31 is arranged on two rollers. The belt 31 is driven to rotate by the rotation of the rollers. The belt 31 is driven to rotate by the operation of the stepper motor 32, so as to realize the transportation of Chinese medicinal materials.

[0034] The photoelectric sensor 4 is mounted on fixed brackets above both sides of the high-speed conveyor belt 3, the hyperspectral camera 5 is mounted at the center position directly above the high-speed conveyor belt 3 through the fixed bracket, and the light source 6 is symmetrically mounted on both sides below the hyperspectral camera 5 through the fixed bracket to evenly illuminate the material on the belt 31 at an angle of 45° to avoid reflection or shadow interference.

[0035] The sorting device 8 consists of a feed port 81, a nozzle 82, a four-way port 83, a connecting pipe 84, and a discharge belt 9; the feed port 81 is fixedly connected to the top of the four-way port 83, the nozzle 82 is fixed to the four outer corners of the feed port 81, and the connecting pipe 84 is fixedly connected to the bottom of the four-way port 83, and the sorting device 8 is used to achieve sorting.

[0036] There are four nozzles 82, four independent nozzles 82, corresponding to the four finished product collection boxes of superior products, first-class products, second-class products and waste materials. The nozzles are called by the control cabinet so that the Chinese herbal medicines of different grades are accurately blown into the collection boxes of the corresponding grades. The automated nozzle system adapts to the physical properties of different pieces by accurately adjusting the airflow pressure and the spray angle, and achieves continuous and efficient operation by relying on the anhydrous airflow sorting technology. While preventing the pieces from getting damp and deteriorating, the breakage rate is controlled below 0.5%, significantly reducing the waste of raw materials and production costs. They are all fixedly connected to the four corners outside the four-part opening 83 through hexagonal thin nuts 85.

[0037] Working principle of multi-level sorting equipment for Chinese herbal medicine slices based on hyperspectral:

[0038] like Figure 8 As shown, the workflow of the multi-level sorting equipment of Chinese herbal medicine slices based on hyperspectral is as follows: First, it is necessary to start the host computer and the air pump, and turn on the light source 6 and the hyperspectral camera 5 at the same time. Then, start the high-speed conveyor belt 3 and the vibrating feeder 2 in sequence. In the vibrating feeder 2, the Chinese herbal medicine slices to be sorted are evenly transmitted to the high-speed conveyor belt 3 by vibration, forming a plurality of neatly arranged slice streams. The hyperspectral camera 5 is responsible for high-definition image acquisition of these slices. After receiving these images, the host computer will perform a series of pre-processing analysis, including filtering and noise reduction, threshold segmentation and feature extraction, etc., to improve the image quality and prepare for subsequent analysis. Subsequently, the target detection model will analyze the key features of the slices such as color, shape, texture and efficacy, so as to grade the quality of the slices and judge them as high-quality products, first-class products, second-class products or waste. The host computer sends the results of each recognition in binary format to the STM32 or Raspberry Pi information storage module. After receiving these data, the STM32 or Raspberry Pi will precisely control the pneumatic sorting device to blow out the different grades of medicinal materials separately and guide them into the corresponding finished product boxes.

[0039] Hyperspectral image processing software:

[0040] The present invention integrates multiple functions of camera control software and hyperspectral outer cover control software to develop a hyperspectral image processing software. The software is written and compiled using the Python programming language using the integrated development environment Pycharm. This hyperspectral image processing interface software has powerful image analysis capabilities. It can automatically identify and process automatically acquired RGB image files, and accurately determine the specific location of Chinese herbal medicine slices in the image. The software uses advanced image processing algorithms to conduct in-depth analysis of the image features of the slices, thereby realizing intelligent identification of the quality of the slices. See the hyperspectral image processing process for details. Fig. 9 .

[0041] like Fig.10 As shown, during the operation of the multi-stage sorting equipment, the Chinese medicinal materials need to be placed in the hopper 14 first. Subsequently, these medicinal materials will be cut into pieces. These pieces will naturally fall to the surface of the vibrating feeder 2 under the action of gravity. The vibrating feeder 2 drives the vibrating clip 21 to vibrate through its built-in vibration motor, so that the Chinese medicinal material pieces can be evenly laid in the groove of the feeder. Then, these pieces will be conveyed forward and gradually transformed into a single-layer arrangement state, and then they will fall on the belt 31 of the high-speed conveyor belt 3, and further dispersed into a uniform piece flow. When these pieces flow through the photoelectric sensor, the hyperspectral image processing software will be activated, which can process the image information and spectral information of the pieces collected by the hyperspectral camera 5. At the same time, the software will also record the three-dimensional point cloud information of the pieces. These three-dimensional point cloud information will then be transmitted to the STM32 or Raspberry Pi controller for accurately determining the position of the nozzle. Through the pneumatic sorting device, accurate positioning and quality judgment of the pieces can be achieved. The sorted pieces are transported to the discharging belt 9 through the connecting pipe, and finally they fall and are collected in the finished product box 12, thus completing the whole multi-stage sorting process. This process not only improves the efficiency of sorting, but also ensures the quality and uniformity of the Chinese herbal medicine pieces.

[0042] The above embodiments only express the implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A hyperspectral-based multi-stage sorting device for Chinese herbal medicine slices, comprising a support (1), characterized in that: An outer cover shell (13) is installed on the top of the bracket (1), and an image acquisition device is arranged inside the outer cover shell (13), and the image acquisition device comprises a vibrating feeder (2), a high-speed conveyor belt (3), a hyperspectral camera (5), a light source (6) and a control screen (7); A vibrating feeder (2) is fixedly connected to one side of the top of the support (1), and the vibrating feeder (2) is connected to a high-speed conveyor belt (3). The high-speed conveyor belt (3) is located at the center of the top of the support (1). A photoelectric sensor (4) and a hyperspectral camera (5) are arranged on the side of the high-speed conveyor belt (3). A light source (6) is arranged on the top of the high-speed conveyor belt (3). A sorting device (8) is installed in the middle layer of the support (1). The feed port of the sorting device (8) is immediately connected to the end of the high-speed conveyor belt (3). A discharge belt (9) extends from the bottom of the sorting device (8). A discharge port (11) is arranged at the end of the discharge belt (9), and a finished product box (12) is arranged at the bottom of the discharge port (11).

2. The hyperspectral-based multi-stage sorting equipment for Chinese herbal medicine slices according to claim 1 is characterized in that: A control panel (7) is installed on one side of the top of the support (1), and a control cabinet (10) is also installed on the middle layer of the support (1). The hopper (14) is installed on one side of the outer cover shell (13), and the feed port of the hopper (14) is tightly connected with the vibrating feeder (2).

3. The hyperspectral-based multi-stage sorting equipment for Chinese herbal medicine slices according to claim 1 is characterized in that: The vibrating feeder (2) is composed of a vibrating clamp (21), a support frame (22), a feed trough (23) and a vibrating motor installed at the bottom of the vibrating clamp (21); the feed trough (23) is fixedly connected to the support frame (22) by bolts; the vibrating clamp (21) is fixedly connected to the lower side of the feed trough (23) by bolts; and the support frame (22) is fixedly connected to the bracket (1).

4. The hyperspectral-based multi-stage sorting equipment for Chinese herbal medicine slices according to claim 1 is characterized in that: The high-speed conveyor belt (3) is composed of a belt (31), a stepper motor (32), a hexagon socket cylindrical screw (33) and a belt mounting frame (34). The stepper motor (32) is fixed to the belt mounting frame (34) by the hexagon socket cylindrical screw (33). Rollers are arranged at both ends of the belt mounting frame (34). The roller at one end of the belt mounting frame (34) is connected to the main shaft of the stepper motor (32). The belt (31) is arranged on the two rollers, and the belt (31) is driven to rotate by the rotation of the rollers.

5. The hyperspectral-based multi-stage sorting equipment for Chinese herbal medicine slices according to claim 4 is characterized in that: The photoelectric sensor (4) is mounted on fixed brackets above both sides of the high-speed conveyor belt (3); the hyperspectral camera (5) is mounted at the center position directly above the high-speed conveyor belt (3) through the fixed brackets; the light source (6) is symmetrically mounted on both sides below the hyperspectral camera (5) through the fixed brackets to evenly illuminate the material on the belt (31) at an angle of 45°.

6. The hyperspectral-based multi-stage sorting equipment for Chinese herbal medicine slices according to claim 1 is characterized by: The sorting device (8) is composed of a feed port (81), a nozzle (82), a four-way port (83), a connecting pipe (84), and a discharge belt (9); the feed port (81) is fixedly connected to the top of the four-way port (83), the nozzle (82) is fixed to the four outer corners of the feed port (81), and the connecting pipe (84) is fixedly connected to the bottom of the four-way port (83).

7. The hyperspectral-based multi-stage sorting equipment for Chinese herbal medicine slices according to claim 6 is characterized by: There are four nozzles (82), which are fixedly connected to the four corners outside the four-part opening (83) through hexagonal thin nuts (85).

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