Unmanned aerial vehicle aerial photogrammetry ground target

Abstract

The ground target comprises a target seat, a base, a bearing frame, a telescopic air cylinder and a motor, target plates are arranged on the two sides of the front end of the target seat, dismounting and mounting are achieved through a buckle structure controller, and inserting shafts are arranged at the upper ends and the lower ends of the rear portions of the two sides of the target seat; the bearing frame is fixedly connected to the top end of the base, a structure for controlling the target seat to rotate is arranged between the bearing frame and the target seat, and the bearing frame is controlled by a motor; the target seat has the advantages that the target seat can rotate forwards and backwards in the mode that the motors drive the rotating shafts to drive the rotating plates, so that the angle of the target seat can be adjusted to meet requirements; and the target plate and the slide rail which are buckled by a buckle structure are designed, so that the target plate can be quickly replaced.

Description

Technical Field

[0001] The utility model relates to the field of unmanned aerial vehicle (UAV) aerial survey equipment, in particular to an unmanned aerial vehicle (UAV) aerial photography surveying ground target. Background Art

[0002] UAV aerial photogrammetry is a technology that uses drones to carry high-resolution cameras and other sensors to shoot in the air to obtain surface information. In this way, high-precision two-dimensional and three-dimensional data can be obtained for use in map making, urban planning, land management, agricultural monitoring, environmental assessment, infrastructure design and other fields. In this process, ground targets are indispensable. They provide reliable references for the precise positioning of drones and accurate processing of image data, and play a vital role in drone aerial photogrammetry.

[0003] The utility model patent with publication number CN220039450U discloses a ground target for aerial photogrammetry by unmanned aerial vehicles. The prior art includes a ground target board, a height adjustment component and a support positioning component. The bottom center of the ground target board is connected to the support positioning component through the height adjustment component; the height adjustment component includes a positioning sleeve. The utility model drives the rotating shaft to rotate by designing a rotating rod, and the rotation of the rotating shaft drives the driving gear to rotate, and the driving gear drives the rack to move downward, thereby pushing the conical positioning column to move downward, that is, the conical positioning column is nailed into the ground surface where the target is placed.

[0004] The utility model effectively solves the problem that the current ground target is placed on the ground surface by a tripod, which is easily disturbed by the external environment and causes the ground target to tilt. However, the prior art still has room for improvement:

[0005] 1. In the prior art, the target plate is fixed on the height adjustment component, which means that it cannot be replaced freely. However, the ground target pattern design in UAV aerial photogrammetry is crucial to ensure the quality and accuracy of photogrammetry data. Different UAVs or different measurement needs have different requirements for the pattern on the target surface, so it often needs to be replaced. In this case, in the prior art, the only way is to replace the entire equipment or use stickers to cover it, which has low operating efficiency and high cost.

[0006] 2. In existing technologies, the angle of the target is fixed and cannot be adjusted, which means that it may be difficult to accurately identify and measure under certain lighting conditions. This may reduce the quality and accuracy of drone photogrammetry data; and in actual applications, drones may need to photograph the ground from different angles and heights. If the angle of the target is fixed, it may not be able to meet all shooting needs, especially when a specific angle or field of view is required. Existing technologies cannot solve this problem.

[0007] In view of this, it is necessary to improve the above defects. Utility Model Content

[0008] The technical problem to be solved by the utility model is to overcome the above-mentioned defects and provide a ground target for aerial photography measurement by an unmanned aerial vehicle.

[0009] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0010] A drone aerial photography ground target measurement method, comprising:

[0011] A target seat, both sides of the front end of the target seat are fixedly connected with slide rails, the inside of the slide rails is slidably connected with a target plate, the target plate and the slide rails are connected to each other by a buckle structure, the upper and lower ends of the rear parts of both sides of the target seat are fixedly connected with plug shafts, and the middle parts of both sides of the target seat are fixedly connected with fixed blocks 2;

[0012] A base, wherein both sides of the base are fixedly connected to a fixing plate at the front and rear parts thereof, and a fixing device for fixing is arranged inside the fixing plate;

[0013] The receiving frame is fixedly connected to the top of the base, and the front and rear ends of the receiving frame are respectively fixedly connected with a fixed front seat and a fixed rear seat, and the top separated sides of the fixed front seat and the fixed rear seat at the front and rear ends are fixedly connected with sockets, the front ends of the sockets are plugged with front baffles inside, and the rear ends of the sockets are plugged with rear baffles inside, and the middle parts of the adjacent sides of the front baffles and the rear baffles are connected to each other by providing a middle frame bar, and the middle part of the middle frame bar is sleeved with a sleeve, and the sleeve is fixedly connected to the receiving frame, and the top adjacent sides of the fixed front seat and the fixed rear seat at the front and rear ends are provided with notches, and the plug shaft at the lower end is arranged in the notch on the fixed front seat, and the front baffle limits the plug shaft;

[0014] A telescopic cylinder, the telescopic cylinder being fixedly connected to the middle portion of the rear end of the rear stop;

[0015] The motor is provided with two motors which are located in the middle of both sides of the base in an opposite direction, and the output shafts of the motors on both sides are connected to each other by a rotating shaft, both ends of the rotating shaft are rotatably connected with a fixed block 1, the fixed block 1 is fixedly connected to the receiving frame, and rotating blocks fixedly connected to the rotating shaft are provided on both sides of the fixed block 1, the top of the rotating block is fixedly connected with a rotating rod 2, the top of the rotating rod 2 is rotatably connected with the rotating rod 1, and the top of the rotating rod 1 is rotatably connected to the fixed block 2.

[0016] As an improvement, the bottom end of the motor is fixedly connected to a motor seat, and the motor seat is fixedly connected to the middle of both sides of the base.

[0017] As an improvement, the bottom end of the telescopic cylinder is fixedly connected to a cylinder seat, and the cylinder seat is fixedly connected to the middle part of the rear side of the base.

[0018] As an improvement, the snap-fit ​​structure includes a cavity opened at the top of both sides of the target plate, a fixing rod is fixedly connected to the inside of the cavity, a slider is slidably connected to the fixing rod, a pressure rod and a latch are fixedly connected to the top and bottom ends of the slider respectively, and the pressure rod and the latch both pass through the cavity and extend to the outside of the target plate.

[0019] As an improvement, a groove for cooperating with the latch is formed on the slide rail, a connecting block is fixedly connected to the side of the cavity bottom wall away from the latch, and the connecting block and the latch are connected to each other by a spring.

[0020] Compared with traditional technology, the advantages of this utility model are:

[0021] 1. The utility model designs a form in which the target base and the target plate cooperate with each other, designs a slide rail on the target base, and fixes the target plate and the slide rail through a snap-fit ​​structure, thereby realizing the function of rapid disassembly and assembly of the target plate. When the measurement of the drone requires different shapes and patterns, the user only needs to operate the snap-fit ​​structure to remove and replace the target plate, without replacing the entire equipment or covering it with practical stickers. This method saves time and is convenient, improves the efficiency of aerial surveying, and reduces the cost of aerial surveying.

[0022] 2. The utility model designs a motor-driven rotating shaft, and designs a rotating structure on the rotating shaft, assisted by a corresponding structure on the receiving frame, and finally realizes that the target holder and the target plate can be adjusted at an angle of 90 degrees in both directions. This adjustment allows the target plate to be adjusted to different angles according to actual measurement needs, which can better cooperate with unmanned measurement, avoid the influence of external factors on the measurement as much as possible, and improve the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a three-dimensional structure of a ground target measured by aerial photography of an unmanned aerial vehicle Figure 1;

[0024] Figure 2 The utility model is a three-dimensional structure of a ground target measured by aerial photography of an unmanned aerial vehicle Figure 2 ;

[0025] Figure 3 The utility model is a three-dimensional structure of a ground target measured by aerial photography of an unmanned aerial vehicle Figure 3 ;

[0026] Figure 4 This is an enlarged view of A of a ground target measured by aerial photography of a UAV in the utility model;

[0027] Figure 5 This is a front cross-sectional view of a buckle structure for measuring ground targets using aerial photography by a drone according to the utility model;

[0028] As shown in the figure: 1. Target seat; 2. Slide rail; 3. Target plate; 4. Buckle structure; 5. Insert shaft; 6. Fixed block 2; 7. Base; 8. Fixed plate; 9. Fixing device; 10. Receiving frame; 11. Fixed front seat; 12. Fixed rear seat; 13. Socket; 14. Front baffle; 15. Rear baffle; 16. Middle frame bar; 17. Sleeve; 18. Notch; 19. Telescopic cylinder; 20. Motor; 21. Rotating shaft; 22. Fixed block 1; 23. Rotating block; 24. Rotating rod 2; 25. Rotating rod 1; 26. Motor seat; 27. Cylinder seat; 28. Cavity; 29. ​​Fixed rod; 30. Slider; 31. Pressure rod; 32. Latch; 33. Groove; 34. Connecting block; 35. Spring. DETAILED DESCRIPTION

[0029] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Embodiment 1:

[0032] like Figures 1 to 4As shown, this embodiment proposes a ground target for aerial photogrammetry of unmanned aerial vehicles, and the device mainly includes a target seat 1, a base 7, a receiving frame 10, a telescopic cylinder 19 and a motor 20, wherein both sides of the front end of the target seat 1 are fixedly connected with a slide rail 2, and a target plate 3 is set to slide therein, and the target plate 3 and the slide rail 2 are connected to each other by a snap structure 4, so that the target plate 3 can be removed and replaced by adjusting the snap structure 4, so that when the aerial survey requires a target plate 3 with a different pattern, it can be quickly replaced without replacing the entire equipment, thereby improving the efficiency of the aerial survey and saving costs. The upper and lower ends of the rear parts of both sides of the target seat 1 are fixedly connected with an insertion shaft 5, and the middle parts of both sides of the target seat 1 are fixedly connected with a fixed block 2 6, which are used to control the rotation of the target seat 1 and the target plate 3 thereon to match the required angle adjustment.

[0033] The front and rear parts of both sides of the base 7 are fixedly connected with fixing plates 8, and fixing devices 9 for fixing are arranged in the fixing plates 8. Through the fixing devices 9, the device can be rooted in the ground to achieve stable handling when the device is used.

[0034] The receiving frame 10 is fixedly connected to the top of the base 7, which is generally in the shape of a Chinese character, and a fixed front seat 11 and a fixed rear seat 12 are fixedly connected to the front and rear ends of the receiving frame 10 respectively, and the top separated sides of the front and rear fixed front seats 11 and the fixed rear seats 12 are fixedly connected to sockets 13, and the sockets 13 are a release-shaped structure with through openings at the front and rear. Front baffles 14 are inserted into the interior of the sockets 13 on both sides of the front end, and rear baffles 14 are inserted into the interior of the sockets 13 on both sides of the rear end. 5. The front baffle 14 and the rear baffle 15 are of the same shape, material and size, and the middle parts of the adjacent sides of the front baffle 14 and the rear baffle 15 are connected to each other by providing a middle frame bar 16. The middle part of the middle frame bar 16 is sleeved with a sleeve 17, and the sleeve 17 is fixedly connected to the receiving frame 10. The telescopic cylinder 19 is fixedly connected to the middle part of the rear end of the rear baffle 15. The bottom end of the telescopic cylinder 19 is fixedly connected to a cylinder seat 27, and the cylinder seat 27 is fixedly connected to the middle part of the rear side of the base 7. Therefore, when the telescopic cylinder 19 is powered on, it can drive the middle frame bar 16 to telescope inside the sleeve 17, thereby driving the front baffle 14 and the rear baffle 15 located at the front and rear ends of the middle frame bar 16 and connected thereto to perform linear displacement. The adjacent sides of the top ends of the fixed front seat 11 and the fixed rear seat 12 at the front and rear ends are provided with notches 18.

[0035] Therefore, if the attached Figure 1As shown, in a preferred embodiment of the utility model, the lower end plug shaft 5 is arranged in the recess 18 on the fixed front seat 11, and a part of the front baffle 14 passes through the rear end of the front end socket 13 and abuts against the top of the lower end plug shaft 5; it realizes the limit fixation thereof, and the rear baffle 15 is completely retracted inside the socket 13, and will not limit the recess 18 at the rear end. At this time, the telescopic cylinder 19 is in a retracted state. When the telescopic cylinder 19 is in an extended state, it drives the rear baffle 15 to migrate, so that the rear baffle 15 passes through the rear end socket 13 and extends to the top of the recess 18. At this time, the front baffle 14 is retracted to the inside of the socket 13, leaving the top of the front end recess 18, thereby releasing the limit on the plug shaft 5. At this time, the reverse adjustment of the target seat 1 and the target plate 3 thereon can be realized.

[0036] The reverse adjustment of the target base 1 and the target plate 3 thereon needs to rely on a structure for reverse adjustment, which is mainly driven by a motor 20, and the motor 20 is provided in two and is located in the middle of both sides of the base 7 in opposite directions. The output shafts of the motors 20 on both sides are connected to each other by a rotating shaft 21, and both ends of the rotating shaft 21 are rotatably connected to a fixed block 1 22, and the fixed block 1 22 is fixedly connected to the receiving frame 10. The two sides of the fixed block 1 22 are provided with a rotating block 23 fixedly connected to the rotating shaft 21, and the top of the rotating block 23 is fixedly connected to a rotating rod 24, and the top of the rotating rod 24 is rotatably connected to a rotating rod 1 25, and the top of the rotating rod 1 25 is rotatably connected to the fixed block 2 6. At the same time, the bottom end of the motor 20 is fixedly connected to a motor seat 26, and the motor seat 26 is fixedly connected to the middle of both sides of the base 7.

[0037] Therefore, if the attached Figure 1 ~Attached Figure 3 As shown, when the motor 20 rotates, the rotating shaft 21 is driven to start rotating. Since the rotating shaft 21 is fixedly connected to the rotating block 23, and the rotating block 23 is fixedly connected to the rotating rod 24, the rotating rod 24 can perform a circular motion, thereby driving the rotating rod 1 25 and the target base 1 connected thereto to perform an angular adjustment movement, so that the target base 1 falls back until the plug-in shaft 5 at the top of the target base 1 falls back into the recess 18 at the rear end. At this time, the telescopic cylinder 19 extends forward to clamp the rear baffle 15 to the plug-in shaft 5 that falls into the recess 18 at the rear end. At this time, the plug-in shaft 5 at the front end loses its limit and becomes movable. By rotating the motor 20 again, the target base 1 can be rotated in the reverse direction, and finally a reversal effect is achieved.

[0038] Embodiment 2:

[0039] The solution in Example 1 is further introduced below in combination with a specific working method, as described below:

[0040] like Figure 5As shown, this embodiment proposes a ground target for aerial photogrammetry of a drone, wherein the buckle structure 4 includes a cavity 28 opened at the top of both sides of the target plate 3, a fixing rod 29 is fixedly connected inside the cavity 28, a slider 30 is slidably connected to the fixing rod 29, a pressure rod 31 and a latch 32 are fixedly connected to the top and bottom of the slider 30, respectively, the pressure rod 31 and the latch 32 both pass through the cavity 28 and extend to the outside of the target plate 3. A groove 33 for matching the latch 32 is opened on the slide rail 2, a connecting block 34 is fixedly connected to the side of the bottom wall of the cavity 28 away from the latch 32, and the connecting block 34 and the latch 32 are connected to each other by a spring 35.

[0041] Therefore, when the user needs to disassemble the target plate 3, the user only needs to press the pressure rod 31, and the slider 30 is forced to slide on the fixed rod 29, thereby driving the pin 32 to begin to disengage from the groove 33, retract into the cavity 28 and squeeze the spring 35 until the pin 32 completely disengages from the groove 33. At this time, the target plate 3 and the slide rail 2 are released from the limit, and the user can remove the target plate 3 for replacement.

[0042] It should be specially noted here that the components described and identified in the text and drawings of the utility model are the key components constituting the utility model, and the remaining non-key components or obvious prior art components, such as screws, nuts and other connectors, and technical features similar to the prior art are not shown. However, this does not mean that the above-mentioned components do not exist in the utility model, nor can it be interpreted as a practical limitation on the utility model.

[0043] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A drone aerial photogrammetry ground target, characterized in that: include: A target base (1), wherein both sides of the front end of the target base (1) are fixedly connected to slide rails (2), the interior of the slide rails (2) is slidably connected to a target plate (3), the target plate (3) and the slide rails (2) are connected to each other via a snap-fit ​​structure (4), the upper and lower ends of the rear parts of both sides of the target base (1) are fixedly connected to plug shafts (5), and the middle parts of both sides of the target base (1) are fixedly connected to fixed blocks (6); A base (7), wherein both sides and front and rear parts of the base (7) are fixedly connected to fixing plates (8), and a fixing device (9) for fixing is arranged inside the fixing plate (8); A receiving frame (10) is fixedly connected to the top of the base (7), and the front and rear ends of the receiving frame (10) are respectively fixedly connected to a fixed front seat (11) and a fixed rear seat (12), and the tops of the fixed front seat (11) and the fixed rear seat (12) at the front and rear ends are fixedly connected to sockets (13), and the front ends of the sockets (13) are plugged with front baffles (14), and the back ends of the sockets (13) are plugged with rear baffles (15), and the front baffles are connected to the front baffles. The middle parts of the adjacent sides of the front and rear stop bars (14) and the rear stop bar (15) are connected to each other by means of a middle frame bar (16); the middle part of the middle frame bar (16) is sleeved with a sleeve (17); the sleeve (17) is fixedly connected to the receiving frame (10); the adjacent sides of the top ends of the fixed front seat (11) and the fixed rear seat (12) at the front and rear ends are provided with notches (18); the lower end of the plug shaft (5) is arranged in the notch (18) on the fixed front seat (11); the front stop bar (14) limits the plug shaft (5); A telescopic cylinder (19), wherein the telescopic cylinder (19) is fixedly connected to the middle portion of the rear end of the rear stop bar (15); The motor (20) is provided in two pieces and is located in the middle of both sides of the base (7) in an opposite direction. The output shafts of the motors (20) on both sides are connected to each other by a rotating shaft (21). Both ends of the rotating shaft (21) are rotatably connected to a fixed block (22). The fixed block (22) is fixedly connected to the supporting frame (10). Rotating blocks (23) fixedly connected to the rotating shaft (21) are provided on both sides of the fixed block (22). The top end of the rotating block (23) is fixedly connected to a rotating rod (24). The top end of the rotating rod (24) is rotatably connected to a rotating rod (25). The top end of the rotating rod (25) is rotatably connected to the fixed block (6).

2. The ground target measurement by drone aerial photogrammetry according to claim 1, characterized in that: The bottom end of the motor (20) is fixedly connected to a motor seat (26), and the motor seat (26) is fixedly connected to the middle of both sides of the base (7).

3. The UAV aerial photogrammetry ground target according to claim 1, characterized in that: The bottom end of the telescopic cylinder (19) is fixedly connected to a cylinder seat (27), and the cylinder seat (27) is fixedly connected to the middle part of the rear side of the base (7).

4. The UAV aerial photogrammetry ground target according to claim 1, characterized in that: The buckle structure (4) comprises cavities (28) opened at the top ends of both sides of the target plate (3); a fixing rod (29) is fixedly connected inside the cavity (28); a slider (30) is slidably connected to the fixing rod (29); a pressure rod (31) and a latch (32) are fixedly connected to the top and bottom ends of the slider (30), respectively; the pressure rod (31) and the latch (32) both pass through the cavity (28) and extend to the outside of the target plate (3).

5. The ground target measurement by drone aerial photogrammetry according to claim 4, characterized in that: The slide rail (2) is provided with a groove (33) for use with the latch (32); a connecting block (34) is fixedly connected to the side of the bottom wall of the cavity (28) away from the latch (32); and the connecting block (34) and the latch (32) are connected to each other via a spring (35).

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