Unmanned aerial vehicle remote sensing data acquisition equipment for corn tassel detection

Abstract

The utility model relates to the technical field of corn tassel detection and acquisition, and discloses an unmanned aerial vehicle remote sensing data acquisition device for corn tassel detection. An acquisition device is arranged at the bottom of a machine body; the transmission assembly is composed of a driving motor, an adjusting screw rod, a sliding block and a connecting piece, when the driving motor runs, the adjusting screw rod rotates along with the driving motor, the sliding block in threaded connection slides up and down in the movable frame, and the collecting device is pushed by the connecting piece to swing with the hinge seat as the center; linear motion of the sliding block is converted into pitching angle change of the collecting device through the connecting piece, the collecting visual angle can be adjusted in real time in the flying process of the unmanned aerial vehicle, a three-dimensional distribution area of corn tassels is accurately aligned, and detection blind areas or soil background interference caused by a fixed angle is avoided. The problems that shutdown operation is needed and the angle coverage range is limited in traditional manual adjustment are solved, and the dynamic adaptability and efficiency of data acquisition are improved.

Description

Technical Field

[0001] This utility model relates to the field of corn tassel detection and collection technology, and in particular to a drone remote sensing data acquisition device for corn tassel detection. Background Technology

[0002] In the field of smart agriculture, using drone remote sensing technology to accurately detect the growth status of maize tassels is an important means to achieve refined management of maize planting. Maize tassels have a highly three-dimensional spatial distribution, with the main axis and lateral branches arranged in an umbrella shape, reaching a height of 30-50 cm from the top of the plant. They also exhibit uneven field density, with significant differences in plant spacing and row spacing between different planting areas, and a dynamic growth cycle, with the tassel morphology changing rapidly from the tasseling stage to maturity. These characteristics place extremely high demands on the angular adaptability and spatial resolution of remote sensing data acquisition equipment.

[0003] Currently, most existing data collection devices are installed on the bottom of drones using manual knobs or snap-on fixing structures. The angle adjustment needs to be manually completed after the drone is stopped. It is impossible to dynamically adjust the angle based on the actual distribution of corn tassels in the field during flight. This results in a limited detection angle range covered by a single flight, requiring repeated flight operations, which increases energy consumption and time costs. Utility Model Content

[0004] To address the shortcomings of using manual knobs or snap-on fixing structures mounted on the bottom of drones, which require manual operation to adjust the angle after the drone is stopped, and cannot be dynamically adjusted according to the actual distribution of corn tassels in the field during flight, resulting in a limited detection angle range covered by a single flight and the need for repeated flight operations, increasing energy consumption and time costs, this utility model provides a drone remote sensing data acquisition device for corn tassel detection. It has the advantages of multi-angle adjustment and high applicability, solving the problems mentioned in the background technology.

[0005] This utility model provides the following technical solution: a remote sensing data acquisition device for detecting corn tassels using an unmanned aerial vehicle (UAV), comprising a body, a data acquisition device at the bottom of the body, an installation plate at the upper end of the data acquisition device, a hinge seat fixedly installed in the middle of the installation plate, a connecting plate fixedly installed in the middle of the upper end of the data acquisition device, the upper end of the connecting plate hinged to the inner side of the hinge seat, an installation groove on the side of the installation plate, a movable frame at the bottom of the installation groove, an adjusting screw rotatably installed inside the movable frame, a drive motor installed at the bottom of the movable frame, the output end of the drive motor connected to the bottom of the adjusting screw via a coupling, a slider threadedly installed in the middle of the adjusting screw, two fixing plates fixedly installed on the side of the data acquisition device, connecting pieces hinged to the inner sides of the two fixing plates, and the other side of the connecting pieces hinged to the inner side of the slider.

[0006] Preferably, the interior of the machine body has a groove, and a rotary motor is installed inside the groove. The output end of the rotary motor is connected to the upper end of the mounting plate via a coupling.

[0007] By using a rotary motor, the mounting plate is driven to rotate the data collection device horizontally, achieving multi-angle coverage and improving the comprehensiveness of field monitoring.

[0008] Preferably, the slider is slidably mounted on the inner side of the movable frame, and a rotating rod is fixedly mounted on the upper end of the movable frame, with both sides of the rotating rod rotatably mounted on the inner side of the mounting groove.

[0009] By setting up the rotating rod, a rotation support point is provided for the movable frame, ensuring that the slider slides smoothly when the adjusting screw rotates, thus guaranteeing the stability of the angle adjustment.

[0010] Preferably, connecting arms are fixedly installed at each of the four corners of the machine body, and a propeller is installed at the upper end of each connecting arm. The propeller is connected to a brushless motor inside the connecting arm.

[0011] Preferably, four supports are fixedly installed at the bottom of the machine body, each support has a sliding groove on its inner side, and two shock-absorbing legs are provided at the bottom of the support.

[0012] By setting up the sliding groove, a sliding guide path is provided for the shock-absorbing outriggers, which can buffer vibrations in the vertical direction and improve the stability of the equipment during take-off and landing.

[0013] Preferably, the upper ends of both sides of the shock-absorbing outrigger are slidably installed inside the slide groove, and a damping rod is fixedly installed on the upper end of the inner side of the slide groove. The bottom of the damping rod is fixedly installed on the upper end of the shock-absorbing outrigger, and a buffer spring is sleeved on the outer side of the damping rod.

[0014] By using a buffer spring, the vertical vibration energy is absorbed through elastic deformation, reducing the impact of drone vibration on the data acquisition device and ensuring the stability of data acquisition.

[0015] This utility model has the following advantages:

[0016] 1. By setting up a hinge fulcrum composed of a mounting plate, a hinge seat, and a connecting plate, and a transmission assembly consisting of a drive motor, an adjusting screw, a slider, and a connecting piece, when the drive motor runs, the adjusting screw rotates accordingly, and the threaded slider slides up and down in the movable frame. Through the connecting piece, it pushes the acquisition device to swing around the hinge seat. During this process, the linear motion of the slider is converted into a change in the pitch angle of the acquisition device through the connecting piece. The acquisition angle can be adjusted in real time during the drone's flight, accurately aligning with the three-dimensional distribution area of ​​corn tassels, avoiding detection blind spots or soil background interference caused by fixed angles. This solves the problems of traditional manual adjustment requiring machine shutdown and limited angle coverage, and improves the dynamic adaptability and efficiency of data acquisition.

[0017] 2. By opening a sliding groove on the inner side of the support and configuring a multi-dimensional shock absorption system consisting of a damping rod, a buffer spring, and a shock-absorbing leg, when the UAV vibrates during landing, the shock-absorbing leg slides up and down along the sliding groove, the buffer spring absorbs the vertical vibration energy through elastic deformation, and the damping rod consumes the horizontal impact load using its internal damping medium, forming a three-dimensional shock absorption protection for the data acquisition device. This structure can effectively reduce the impact of UAV vibration on the sensor, suppress lens shift or data distortion caused by vibration, and ensure the stability and accuracy of remote sensing data. At the same time, through the dual action of elastic support and damping buffer, the service life of the equipment in high-frequency vibration environments is extended. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front view of the present utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the body of this utility model;

[0020] Figure 3 This is a schematic diagram of the overall side view structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the bottom structure of the mounting plate of this utility model;

[0022] Figure 5 This is a schematic diagram of the angle adjustment structure of the data acquisition device of this utility model.

[0023] In the diagram: 1. Body; 2. Connecting arm; 3. Propeller; 4. Data acquisition device; 5. Support; 6. Shock-absorbing leg; 7. Groove; 8. Rotary motor; 9. Mounting plate; 10. Hinge seat; 11. Connecting plate; 12. Mounting slot; 13. Movable frame; 14. Rotating rod; 15. Adjusting screw; 16. Drive motor; 17. Slider; 18. Fixing plate; 19. Connecting piece; 20. Slide groove; 21. Damping rod; 22. Buffer spring. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1-5A remote sensing data acquisition device for detecting corn tassels using an unmanned aerial vehicle (UAV) includes a body 1. A data acquisition device 4 is provided at the bottom of the body 1. A mounting plate 9 is provided at the upper end of the data acquisition device 4. A hinge seat 10 is fixedly installed in the middle of the mounting plate 9. A connecting plate 11 is fixedly installed in the middle of the upper end of the data acquisition device 4. The upper end of the connecting plate 11 is hinged to the inner side of the hinge seat 10. Through the hinged setting between the connecting plate 11 and the hinge seat 10, the data acquisition device 4 can swing flexibly around the hinge point, providing a rotation fulcrum for adjusting the vertical pitch angle and ensuring the smoothness and stability of the angle adjustment. A mounting groove 12 is provided on the side of the mounting plate 9, and a movable frame 13 is provided at the bottom of the mounting groove 12.

[0026] An adjusting screw 15 is rotatably mounted inside the movable frame 13. A drive motor 16 is mounted at the bottom of the movable frame 13. The output end of the drive motor 16 is connected to the bottom of the adjusting screw 15 via a coupling. A slider 17 is threadedly mounted in the middle of the adjusting screw 15. A hinge fulcrum composed of a mounting plate 9, a hinge seat 10, and a connecting plate 11, along with a transmission assembly consisting of the drive motor 16, the adjusting screw 15, the slider 17, and the connecting piece 19, causes the adjusting screw 15 to rotate when the drive motor 16 operates. The threaded slider 17 slides up and down within the movable frame 13. Two fixed mounting plates are fixedly mounted on the side of the data acquisition device 4. The inner sides of the two fixed plates 18 are hinged with connecting pieces 19. The other side of the connecting pieces 19 is hinged to the inner side of the slider 17. The connecting pieces 19 push the acquisition device 4 to swing around the hinge seat 10. During this process, the linear motion of the slider 17 is converted into the pitch angle change of the acquisition device 4 through the connecting pieces 19. The acquisition angle can be adjusted in real time during the flight of the UAV, accurately aligning with the three-dimensional distribution area of ​​the corn tassels. This avoids the detection blind spots or soil background interference caused by fixed angles, solves the problems of traditional manual adjustment requiring machine stop operation and limited angle coverage, and improves the dynamic adaptability and efficiency of data acquisition.

[0027] Please see Figures 2-4 The machine body 1 has a groove 7 inside, and a rotary motor 8 is installed inside the groove 7. The output end of the rotary motor 8 is connected to the upper end of the mounting plate 9 through a coupling. The slider 17 is slidably installed inside the movable frame 13, driving the mounting plate 9 to drive the acquisition device 4 to rotate horizontally. Combined with the sliding of the slider 17 in the movable frame 13, the dual-axis angle dynamic adjustment is realized, improving the detection coverage and flexibility. The upper end of the movable frame 13 is fixedly installed with a rotating rod 14. The two sides of the rotating rod 14 are rotatably installed inside the mounting groove 12, providing a stable lateral rotation fulcrum for the movable frame 13. This ensures that when the adjusting screw 15 drives the slider 17 to slide, the movable frame 13 is subjected to uniform force and moves smoothly, ensuring the angle adjustment accuracy. Connecting arms 2 are fixedly installed at the four corners of the machine body 1. The upper end of each connecting arm 2 is equipped with a propeller 3, which is connected to the brushless motor inside the connecting arm 2.

[0028] Four supports 5 are fixedly installed on the bottom of the body 1. Each support 5 has a groove 20 on its inner side. Two shock-absorbing legs 6 are located at the bottom of each support 5. The upper ends of both sides of the shock-absorbing legs 6 are slidably installed inside the grooves 20. Damping rods 21 are fixedly installed on the upper inner side of each groove 20. The bottom of the damping rods 21 is fixedly installed on the upper end of the shock-absorbing legs 6. The damping rods 21 utilize internal damping media to dissipate horizontal impact loads, forming a three-dimensional shock absorption protection for the data acquisition device 4. This structure can effectively reduce the impact of UAV vibration on the sensor and suppress the effects of vibration. Vibration-induced lens shift or data distortion ensures the stability and accuracy of remote sensing data. At the same time, the dual action of elastic support and damping buffer extends the service life of the equipment in high-frequency vibration environment. The outer side of the damping rod 21 is fitted with a buffer spring 22. A sliding groove 20 is opened on the inner side of the support 5, and a multi-dimensional shock absorption system composed of the damping rod 21, the buffer spring 22 and the shock-absorbing leg 6 is configured. When the UAV lands and vibrates, the shock-absorbing leg 6 slides up and down along the sliding groove 20, and the buffer spring 22 absorbs the vertical vibration energy through elastic deformation.

[0029] Working principle: In actual use, first start the drone's propeller 3, which drives the body 1 to take off and fly above the corn planting area through the brushless motor in the connecting arm 2. At this time, according to the distribution of corn tassels, the operator sends a command through the ground control system to start the rotary motor 8 and drive motor 16, so that the collection device 4 enters the angle adjustment state.

[0030] The rotary motor 8 drives the mounting plate 9 to rotate horizontally through the coupling, so that the collection device 4 rotates to cover the tassels with different row spacing or lateral distribution. At the same time, the drive motor 16 drives the adjusting screw 15 to rotate, and the slider 17, which is threadedly connected to the adjusting screw 15, slides up and down in the movable frame 13. When the slider 17 slides upward, it pushes the collection device 4 to swing upward with the hinge seat 10 as the fulcrum through the connecting piece 19, increasing the elevation angle to align with the top of the corn tassel. When the slider 17 slides downward, the collection device 4 swings downward, decreasing the elevation angle to capture the lateral branch data of the tassel.

[0031] After the angle adjustment is completed, the multispectral camera, thermal infrared sensor and other components in the acquisition device 4 begin to collect remote sensing data of corn tassels. When the drone lands after the flight, if the drone vibrates due to the terrain, the shock-absorbing legs 6 slide up and down along the groove 20 on the inner side of the support 5. The buffer spring 22 absorbs the vertical vibration energy through elastic deformation, and the damping rod 21 consumes the horizontal impact through the internal damping medium. The two work together to reduce the impact of vibration on the acquisition device 4 and avoid sensor displacement or data distortion due to vibration.

Claims

1. A unmanned aerial vehicle remote sensing data acquisition device for corn tassel detection, comprising a machine body (1), characterized in that: The bottom of the machine body (1) is provided with a collecting device (4), the upper end of the collecting device (4) is provided with a mounting plate (9), the middle of the mounting plate (9) is fixedly installed with a hinge seat (10), the upper end of the collecting device (4) is fixedly installed with a connecting plate (11), the upper end of the connecting plate (11) is hingedly installed on the inner side of the hinge seat (10), the side of the mounting plate (9) is provided with a mounting groove (12), the bottom of the mounting groove (12) is provided with a movable frame (13), the inside of the movable frame (13) is rotatably installed with an adjusting screw (15), the bottom of the movable frame (13) is installed with a driving motor (16), the output end of the driving motor (16) is connected to the bottom of the adjusting screw (15) through a shaft coupling, the middle of the adjusting screw (15) is threadedly installed with a sliding block (17), the side of the collecting device (4) is fixedly installed with two fixed plates (18), the inner side of the two fixed plates (18) is hingedly installed with a connecting piece (19), the other side of the connecting piece (19) is hingedly installed on the inner side of the sliding block (17). 2.The unmanned aerial vehicle remote sensing data acquisition device for tassel detection of corn according to claim 1, characterized in that: The inside of the machine body (1) is provided with a groove (7), the inner side of the groove (7) is installed with a rotating motor (8), the output end of the rotating motor (8) is connected to the upper end of the mounting plate (9) through a shaft coupling. 3.The unmanned aerial vehicle remote sensing data acquisition device for tassel detection of corn according to claim 1, characterized in that: The sliding block (17) is slidably installed on the inner side of the movable frame (13), the upper end of the movable frame (13) is fixedly installed with a rotating rod (14), the two sides of the rotating rod (14) are rotatably installed on the inner side of the mounting groove (12).

4. The unmanned aerial vehicle remote sensing data acquisition device for corn tassel detection according to claim 1, characterized in that: The four corners of the machine body (1) are fixedly installed with connecting arms (2), the upper ends of the connecting arms (2) are installed with machine paddles (3), the machine paddles (3) are connected with the internal brushless motor of the connecting arms (2).

5. The unmanned aerial vehicle remote sensing data acquisition device for tassel detection according to claim 1, characterized in that: The bottom of the machine body (1) is fixedly installed with four supports (5), the inner side of the support (5) is provided with a sliding groove (20), the bottom of the support (5) is provided with two damping legs (6). 6.The unmanned aerial vehicle remote sensing data acquisition device for tassel detection of corn according to claim 5, characterized in that: The two sides of the damping leg (6) are slidably installed on the inner side of the sliding groove (20), the inner side of the sliding groove (20) is fixedly installed with a damping rod (21), the bottom of the damping rod (21) is fixedly installed on the upper end of the damping leg (6), the outer side of the damping rod (21) is sleeved with a buffer spring (22).

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