Field tobacco image acquisition equipment

Abstract

The utility model discloses field tobacco leaf image acquisition equipment which comprises a supporting rod and an acquisition rod which are detachably connected, the upper end of the supporting rod is provided with a lower arm supporting device, and the lower end of the supporting rod is detachably connected with the acquisition rod; a holding part is arranged at the upper end of the collecting rod, the outer end of the holding part is connected with a display screen mounting platform through a first angle adjusting device, an external display screen of an image collector is detachably arranged on the display screen mounting platform, and the lower end of the collecting rod is connected with the image collector mounting platform through a second angle adjusting device; an image collector is detachably arranged on the image collector mounting platform; a control button of the image collector is further arranged on the collecting rod, and the image collector, the external display screen and the control button are in communication connection. According to the utility model, workers can accurately shoot the front and back sides of field tobacco leaves conveniently, the image acquisition efficiency and quality are improved, and the working intensity of the workers is reduced.

Description

Technical Field

[0001] The utility model relates to an image acquisition device, in particular to a field tobacco leaf image acquisition device. Background Art

[0002] Tobacco is an important cash crop, cultivated extensively in my country. Field maturity is a key factor in determining harvesting, and identifying field maturity has long been a key concern for the tobacco industry.

[0003] For years, researchers have been exploring the use of image sensing technology and machine learning algorithms to identify tobacco leaf maturity in the field, with supervised learning (SL) algorithms being widely adopted. However, because image recognition of tobacco leaf maturity in the field involves a variety of scenarios, including different varieties, planting areas, and planting patterns, collecting and labeling large numbers of tobacco images is labor-intensive and time-consuming. Furthermore, to further improve the accuracy of tobacco leaf maturity recognition, images of both the front and back of the leaves must be captured.

[0004] Because tobacco leaves have a stem height of 0.7m-2m and are affected by gravity, the upper leaves are 1.5m-1.7m above the ground, while the lower leaves are only 0.3m-0.5m above the ground. Furthermore, tobacco leaves in the field are often planted side by side, with leaves in the same row ranging up to 2m-3m apart. When workers use mobile phones, cameras, or other image acquisition devices to capture images of the front and back of tobacco leaves separately, capturing images of the upper and lower leaves, or the inner leaves of side-by-side plants, is extremely inconvenient. The upper and inner leaves require dragging, and the lower leaves require repeated squatting to capture. Accurate image focus is impossible during this process, resulting in extremely high workload and low efficiency. This can easily result in incomplete or out-of-focus images of the back of the tobacco leaves, making the sample invalid. Utility Model Content

[0005] The purpose of the utility model is to provide a field tobacco leaf image acquisition device, which is convenient for workers to accurately photograph the front and back of field tobacco leaves, improve the efficiency and quality of image acquisition, and reduce the work intensity of workers.

[0006] The utility model adopts the following technical solutions:

[0007] A field tobacco leaf image acquisition device includes a detachably connected support rod and a acquisition rod, wherein the upper end of the support rod is provided with a lower arm support device, and the lower end of the support rod is detachably connected to the acquisition rod; the upper end of the acquisition rod is provided with a gripping portion, the outer end of the gripping portion is connected to a display screen mounting platform via a first angle adjustment device, an external display screen of an image collector is detachably provided on the display screen mounting platform, the lower end of the acquisition rod is connected to an image collector mounting platform via a second angle adjustment device, an image collector is detachably provided on the image collector mounting platform; a control button of the image collector is also provided on the acquisition rod, and the image collector, the external display screen and the control button are communicatively connected.

[0008] The lower arm support device adopts a U-shaped arm support lined with flexible material, and a strap is provided at the opening of the arm support.

[0009] The collecting rod comprises a nested inner tube and an outer tube, and the lower end of the outer tube is provided with an inner tube locking structure.

[0010] The inner tube locking structure includes an external thread provided at the lower end of the outer tube and a locking sleeve threadedly connected to the lower end of the outer tube. The lower end of the locking sleeve is integrally connected to an annular tightening block, the inner diameter of the tightening block is adapted to the outer diameter of the inner tube and is smaller than the inner diameter of the outer tube; a tightening sleeve is inserted into the gap between the inner tube and the outer tube, the tightening sleeve is provided on the outside of the inner tube and has a truncated cone-shaped outer surface, and the lower end surface of the tightening sleeve is tightly pressed against the upper end surface of the tightening block inside the locking sleeve.

[0011] The second angle adjustment device includes a circular shell arranged at the lower end of the inner tube and a driving rod arranged in the cavity of the inner tube, and a rotating disk is coaxially rotated in the circular shell; the image collector mounting platform is arranged on the outside of the circular shell along the axial direction of the rotating disk; the lower end of the driving rod passes through the circular shell and is radially located on the inner side of the rotating disk, and a rotation driving mechanism is arranged between the lower end of the driving rod and the rotating disk, and the rotation driving mechanism drives the rotating disk to rotate by the vertical up and down movement of the driving rod in the radial direction of the rotating disk.

[0012] The rotating disk is provided with a plurality of cylindrical guide columns along the circumferential direction, and the inside of the annular shell is provided with circular guide grooves adapted to the cylindrical guide columns along the axial direction.

[0013] The rotary drive mechanism includes a first hinge column eccentrically and vertically arranged on the inner surface of the rotating disk, and a second hinge column vertically arranged on the lower end of the driving rod adjacent to the rotating disk. The first hinge column and the second hinge column are respectively hinged to the two ends of the connecting rod.

[0014] A through slot is axially opened in the middle of one side of the outer tube, a driving rod handle is arranged in the through slot, the driving rod handle is fixedly connected to the driving rod located in the outer tube, and the control button of the image collector is arranged at the outer end of the driving rod handle.

[0015] The driving rod adopts a nested outer driving rod and inner driving rod, and both the outer driving rod and the inner driving rod are square tubes; the inner cavity of the inner tube is a square inner cavity, and the outer driving rod is slidably arranged in the square inner cavity of the inner tube; the interior of the outer tube is provided with a square guide portion adapted to the inner driving rod.

[0016] The lower end of the annular shell is provided with a supporting foot.

[0017] The utility model utilizes the cooperation of the support rod and the acquisition rod to play the role of an extension arm, effectively extending the image acquisition range, and can accurately and labor-savingly control the position of the image collector at the lower end of the acquisition rod; the support rod and the acquisition rod can adopt detachable connection methods such as threaded connection or clamping connection, which is convenient for disassembly and assembly.

[0018] The utility model expands the real-time picture of the image collector by setting an external display screen, making it easier for users to observe and determine the shooting distance and shooting angle, thereby improving the success rate of image acquisition and avoiding the occurrence of incomplete or out-of-focus shooting of tobacco leaf images.

[0019] The utility model also adjusts the angles of the external display screen and the image collector respectively through the first angle adjustment device and the second angle adjustment device to meet the observation needs of the user and the shooting angle requirements of the image collector.

[0020] When using this device to capture images of tobacco leaves in the field, the user uses the lower arm support and gripping portion to hold and adjust the image acquisition rod with their right arm. Then, using their left arm, they fine-tune the angle of the image acquisition device using the drive handle. The user can observe the image acquisition device's viewfinder in real time using an external display. When the image acquisition device's position, angle, and focal length are optimal for capturing, the user presses a control button with their left hand to complete the capture. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 This is a side structural diagram of the present utility model;

[0023] Figure 3 This is a schematic structural diagram of the nested inner tube and outer tube in the present invention;

[0024] Figure 4 This is a schematic structural diagram of the rotary drive mechanism in the present utility model;

[0025] Figure 5 for Figure 2 Schematic diagram of the enlarged structure of part A;

[0026] Figure 6 for Figure 2Schematic diagram of the enlarged structure of part B;

[0027] Figure 7 for Figure 2 Schematic diagram of the enlarged structure of part C;

[0028] Figure 8 for Figure 4 Schematic diagram of the enlarged structure of part D. DETAILED DESCRIPTION

[0029] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0030] like Figures 1 to 8 As shown, the field tobacco leaf image acquisition device described in the utility model includes a detachably connected support rod 1 and a collection rod 2. The upper end of the support rod 1 is provided with a lower arm support device 3 for being mounted on the user's lower arm, and the lower end of the support rod 1 is detachably connected to the collection rod 2; the upper end of the collection rod 2 is provided with a gripping portion 4, and the outer end of the gripping portion 4 is connected to a display screen mounting platform 6 through a first angle adjustment device 5, and an external display screen of an image collector 7 is detachably provided on the display screen mounting platform 6, and the lower end of the collection rod 2 is connected to an image collector mounting platform 8 through a second angle adjustment device, and an image collector 7 is detachably provided on the image collector mounting platform 8; a control button 9 of the image collector 7 is also provided on the collection rod 2, and the image collector 7, the external display screen and the control button 9 are communicatively connected.

[0031] In the present invention, the support rod 1 and the acquisition rod 2 function as extension arms, effectively extending the image acquisition range. Furthermore, the support rod 1 and the acquisition rod 2 can be detachably connected using threaded or snap-on connections, facilitating assembly and disassembly. The lower arm support device 3 is sleeved onto the user's lower arm and, in conjunction with the grip 4 on the upper portion of the acquisition rod 2, acts as a fulcrum, more in line with ergonomic design, reduces the user's exertion, and allows for more accurate and effortless control of the position of the image collector 7 at the lower end of the acquisition rod 2. To facilitate maintenance and replacement of the grip 4, the grip 4 is detachably connected to the upper end of the acquisition rod 2 via a sleeve 30.

[0032] The external display screen can be a mobile phone or a small-sized tablet computer, thereby expanding the real-time picture of the image collector 7, making it easier for users to observe and determine the shooting distance and shooting angle, so as to improve the success rate of image acquisition and avoid incomplete or out-of-focus shooting of tobacco leaf images.

[0033] The first angle adjustment device 5 is used to adjust the angle of the display screen mounting platform 6 to meet the user's viewing needs. The first angle adjustment device 5 can adopt an existing hinge structure with damping positioning function. The above hinge structure is commonly used in fields such as mobile phone holders and will not be described in detail here.

[0034] The second angle adjustment device is used to adjust the angle of the image collector mounting platform 8 to suit the user's desired shooting angle for the image collector 7. Due to the varying orientation and angle of tobacco leaves, as well as the user's position, the image collector 7 needs to be adjusted within a small range to match the height and angle of the collection rod 2, ensuring that the image collector 7 captures the tobacco leaves as vertically as possible. This second angle adjustment device can be implemented using an existing electric pan / tilt head, which will not be described in detail here.

[0035] The image collector 7 can be detachably mounted on the image collector mounting platform 8, which facilitates replacement of the image collector 7 or insertion and removal of the memory card in the image collector 7. The image collector 7 can be a commercially available camera, selected based on actual usage requirements such as pixels and focus.

[0036] The control button 9 of the image collector 7, located on the acquisition rod 2, can function as an external shutter or external control device, allowing the user to more conveniently control the image collector 7 to capture images. Considering the communication connection between the image collector 7 and the external display screen and the control button 9, the image collector 7 can adopt a camera with wired or wireless expansion capabilities to achieve connection with the external display screen and the external shutter or controller.

[0037] In the present invention, the lower arm support device 3 can adopt a U-shaped arm support lined with flexible material to achieve semi-enclosed covering of the user's lower arm. A strap 10 such as a hook and loop strap can be provided at the opening of the arm support, which is in close contact with the user's lower arm when the user lifts the collection rod 2, so as to fully utilize the force of the user's lower arm and reduce the force of the user's hand, thereby reducing work intensity.

[0038] In order to realize the length adjustment function of the collection rod 2 and to adapt to different application scenarios more flexibly, in the present invention, the collection rod 2 includes a nested inner tube 2-1 and an outer tube 2-2, and the lower end of the outer tube 2-2 is provided with an inner tube locking structure.

[0039] In this embodiment, the inner tube locking structure includes an external thread 13 provided at the lower end of the outer tube 2-2 and a locking sleeve 11 threadedly connected to the lower end of the outer tube 2-2. The lower end of the locking sleeve 11 is integrally connected to an annular tightening block 12. The inner diameter of the tightening block 12 matches the outer diameter of the inner tube 2-1 and is smaller than the inner diameter of the outer tube 2-2. A tightening sleeve 14 is inserted into the gap between the inner tube 2-1 and the outer tube 2-2. The tightening sleeve 14 is sleeved on the outer side of the inner tube 2-1 and has a truncated cone-shaped outer surface. The lower end surface of the tightening sleeve 14 abuts against the upper end surface of the tightening block 12 inside the locking sleeve 11. When the locking sleeve 11 is raised along the thread by rotating the tightening block 12, the tightening block 12 drives the tightening sleeve 14 upward so that the tightening sleeve 14 is inserted into the gap between the inner tube 2-1 and the outer tube 2-2, thereby locking the inner tube 2-1 and the outer tube 2-2 in position through friction. In order to facilitate the rotation of the tightening block 12 , the outer contour of the tightening block 12 is hexagonal, and the tightening block 12 is made of copper.

[0040] In the present invention, the user's arm can flexibly and labor-savingly adjust the angle of the collecting rod 2 within a certain range. Because the angle adjustment range of the second angle adjustment device does not need to be 360 ​​degrees, only a small angle adjustment range is required. In order to reduce product production costs, the present invention also has a special design of a second angle adjustment device based on mechanical control.

[0041] The second angle adjustment device includes an annular shell 15 arranged at the lower end of the inner tube 2-1 and a driving rod 16 arranged in the cavity of the inner tube 2-1. A rotating disk 17 is rotatably arranged in the annular shell 15. The rotating disk 17 cooperates with a circular guide groove 19 axially arranged inside the annular shell 15 through a cylindrical guide column 18 arranged in the circumferential direction of the rotating disk 17 to realize the coaxial rotation connection between the rotating disk 17 and the annular shell 15; the image collector mounting platform 8 is arranged on the outside of the outer side of the annular shell 15 along the axial direction of the rotating disk 17; the lower end of the driving rod 16 passes through the annular shell 15 and is radially located on the inner side of the rotating disk 17, and a rotation driving mechanism is arranged between the lower end of the driving rod 16 and the rotating disk 17. The rotation driving mechanism drives the rotating disk 17 to rotate within a certain angle through the vertical up and down movement of the driving rod 16 in the radial direction of the rotating disk 17.

[0042] In this embodiment, the rotational drive mechanism includes a first hinged post 20, eccentrically positioned perpendicularly on the inner surface of the rotating disk 17, and a second hinged post, positioned perpendicularly at the lower end of the drive rod 16, adjacent to the rotating disk 17. The first hinged post 20 and the second hinged post are respectively hingedly connected to the ends of a connecting rod 21. When the drive rod 16 moves up and down in a radial direction parallel to the center of the rotating disk 17, the connecting rod 21 drives the rotating disk 17 to rotate within a certain angle, thereby adjusting the angle of the image collector 7 mounted on the image collector mounting platform 8.

[0043] To facilitate control of the drive rod 16, a through slot 22 is axially defined in the middle of one side of the outer tube 2-2. A drive rod handle 23 is disposed within the through slot 22 and is fixedly connected to the drive rod 16 within the outer tube 2-2. By driving the drive rod handle 23 up and down, the drive rod 16 can be moved up and down within the outer tube 2-2 and inner tube 2-1. Vertical guide bars 24 can be provided on the sidewalls of the through slot 22, and vertical guide grooves 25 are provided at corresponding positions on the drive rod handle 23. The vertical movement trajectory of the drive rod handle 23 is restricted by the action of the vertical guide bars 24 and the vertical guide grooves 25. The control button 9 of the image acquisition device 7 can be located at the outer end of the drive rod handle 23 for easier operation by the user.

[0044] To achieve adjustable length of the collection rod 2 within a certain range, the relative position of the outer tube 2-2 and the inner tube 2-1 may vary. To accommodate the aforementioned structure of the collection rod 2, in the present invention, the drive rod 16 also utilizes a nested outer drive rod 16-1 and inner drive rod 16-2. Both the outer drive rod 16-1 and the inner drive rod 16-2 are square tubes. Accordingly, the inner tube 2-1 has a square lumen, and the outer drive rod 16-1 is slidably disposed within the square lumen of the inner tube 2-1. A square guide portion 26 is provided within the outer tube 2-2, which mates with the inner drive rod 16-2. The inner drive rod 16-2 is slidably disposed within the outer tube 2-2 and is restrained by the square guide portion 26. After the positions of the outer drive rod 16-1 and the inner drive rod 16-2 are adjusted, they are fixed in place by a positioning bolt 27. To match the positioning bolt 27, a strip-shaped positioning bolt adjustment hole 28 or several circular positioning bolt adjustment holes 28 are axially opened on one side of the outer tube 2-2 to facilitate the relative position adjustment of the outer drive rod 16-1 and the inner drive rod 16-2 at any time, thereby realizing adaptive adjustment of the length of the drive rod 16.

[0045] In the present invention, a support foot 29 is further provided at the lower end of the annular housing 15, and an anti-slip sleeve is provided on the support foot 29. The provision of the support foot 29 can protect the lower end of the annular housing 15 from collisions, and can also make the present invention function as a walking stick, which can assist the user in walking in the field and avoid falling.

[0046] During assembly, the inner tube locking structure and positioning bolts 27 can be loosened to adjust the relative positions of the inner tube 2-1 and outer tube 2-2, as well as the relative positions of the outer drive rod 16-1 and inner drive rod 16-2. After adjustment, the inner tube locking structure and positioning bolts 27 are used to lock the positions. When capturing images of tobacco leaves in the field, the lower arm support device 3 and the gripping portion 4 are used with the right arm to grip and adjust the position of the acquisition rod 2. The left arm then uses the drive rod handle 23 to fine-tune the angle of the image acquisition device 7. The user uses an external display to observe the viewfinder of the image acquisition device 7 in real time. When the position, angle, and focal length of the image acquisition device 7 are optimal for capturing, the user presses the control button 9 with their left hand to complete the image capture. This allows for quick and effortless high-quality image capture of both the front and back sides of the upper and lower tobacco leaves, as well as the inner side leaves planted side by side.

[0047] The utility model can expand the image acquisition range of the user, reduce the user's travel distance, and greatly reduce the workload of image acquisition. The image acquisition operation of the upper and lower tobacco leaves or the inner tobacco leaves planted side by side can be completed without repeatedly squatting or dragging the tobacco leaves, thereby effectively improving the image data quality.

Claims

1. A tobacco leaf field image acquisition device, characterized by: It includes a support rod and a collection rod. The upper end of the support rod is provided with a lower arm support device, and the lower end of the support rod is detachably connected to the collection rod; the upper end of the collection rod is provided with a gripping portion, and the outer end of the gripping portion is connected to a display screen mounting platform through a first angle adjustment device, and an external display screen of an image collector is detachably provided on the display screen mounting platform; the lower end of the collection rod is connected to an image collector mounting platform through a second angle adjustment device, and an image collector is detachably provided on the image collector mounting platform; a control button of the image collector is also provided on the collection rod, and the image collector, the external display screen and the control button are communicatively connected.

2. The field tobacco leaf image acquisition device according to claim 1, characterized in that: The lower arm support device adopts a U-shaped arm support lined with flexible material, and a strap is provided at the opening of the arm support.

3. The field tobacco leaf image acquisition device according to claim 1, characterized in that: The collecting rod comprises a nested inner tube and an outer tube, and the lower end of the outer tube is provided with an inner tube locking structure.

4. The field tobacco leaf image acquisition device according to claim 3, characterized in that: The inner tube locking structure includes an external thread provided at the lower end of the outer tube and a locking sleeve threadedly connected to the lower end of the outer tube. The lower end of the locking sleeve is integrally connected to an annular tightening block, the inner diameter of the tightening block is adapted to the outer diameter of the inner tube and is smaller than the inner diameter of the outer tube; a tightening sleeve is inserted into the gap between the inner tube and the outer tube, the tightening sleeve is provided on the outside of the inner tube and has a truncated cone-shaped outer surface, and the lower end surface of the tightening sleeve is tightly pressed against the upper end surface of the tightening block inside the locking sleeve.

5. The field tobacco leaf image acquisition device according to claim 4, characterized in that: The second angle adjustment device includes a circular shell arranged at the lower end of the inner tube and a driving rod arranged in the cavity of the inner tube, and a rotating disk is coaxially rotated in the circular shell; the image collector mounting platform is arranged on the outside of the circular shell along the axial direction of the rotating disk; the lower end of the driving rod passes through the circular shell and is radially located on the inner side of the rotating disk, and a rotation driving mechanism is arranged between the lower end of the driving rod and the rotating disk, and the rotation driving mechanism drives the rotating disk to rotate by the vertical up and down movement of the driving rod in the radial direction of the rotating disk.

6. The field tobacco leaf image acquisition device according to claim 5, characterized in that: The rotating disk is provided with a plurality of cylindrical guide columns along the circumferential direction, and the inside of the annular shell is provided with circular guide grooves adapted to the cylindrical guide columns along the axial direction.

7. The field tobacco leaf image acquisition device according to claim 5, characterized in that: The rotary drive mechanism includes a first hinge column eccentrically and vertically arranged on the inner surface of the rotating disk, and a second hinge column vertically arranged on the lower end of the driving rod adjacent to the rotating disk. The first hinge column and the second hinge column are respectively hinged to the two ends of the connecting rod.

8. The field tobacco leaf image acquisition device according to claim 5, characterized in that: A through slot is axially opened in the middle of one side of the outer tube, a driving rod handle is arranged in the through slot, the driving rod handle is fixedly connected to the driving rod located in the outer tube, and the control button of the image collector is arranged at the outer end of the driving rod handle.

9. The field tobacco leaf image acquisition device according to claim 5, characterized in that: The driving rod adopts a nested outer driving rod and inner driving rod, and both the outer driving rod and the inner driving rod are square tubes; the inner cavity of the inner tube is a square inner cavity, and the outer driving rod is slidably arranged in the square inner cavity of the inner tube; the interior of the outer tube is provided with a square guide portion adapted to the inner driving rod.

10. The field tobacco leaf image acquisition device according to claim 5, characterized in that: The lower end of the annular shell is provided with a supporting foot.

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