Target device for control point of unmanned aerial vehicle photogrammetry
By using a servo motor to drive the turntable to reduce wind resistance in the control point target device for drone photogrammetry, and lifting the target plate through two-stage push mechanism to avoid obstruction, the device in the prior art is easily overturned by wind and The problem of weed occlusion achieves higher measurement stability and accuracy.
Patent Information
- Application Number
- CN202421059917.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-15
AI Technical Summary
The existing target devices are easily blocked by weeds during field measurements and are easily dumped under high wind pressure, which affects the accuracy of photogrammetry.
A target device for control point measurement for drone photogrammetry was designed, and a servo motor was used to drive the turntable to rotate, so that the width direction of the support plate was consistent with the wind direction, reducing wind resistance; at the same time, the target plate was lifted through two-stage push mechanisms. Go to the upper side of the weeds to avoid obstruction.
Effectively reduce wind resistance, avoid device tilt caused by wind force, ensure the stability and accuracy of measurement, and avoid weed occlusion and improve the recognition rate of the target plate.
Smart Images
Figure CN222528645U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photogrammetry, in particular to a target device for control points of unmanned aerial vehicle photogrammetry. Background Art
[0002] Photogrammetry refers to the technology of using a combination of cameras and films to measure the shape, size and spatial position of a target object. Using drones to carry cameras to fly in the air for photogrammetry can significantly improve the efficiency of measurement. During the measurement process, targets need to be installed on the ground so that the camera can easily identify the measurement position.
[0003] Most of the existing target devices are target plates supported by brackets, and then the brackets are inserted into the soil on the ground with stable stakes to make them stable during use. However, in actual use, there are deep weeds during field measurement, so the target is easily blocked by weeds after installation. At the same time, it is easy to cause impact on the target when the wind is strong. Continuous wind impact can easily cause the target device to topple over, thus affecting the accuracy of photogrammetry. Therefore, we propose a target device for control points of drone photogrammetry. Utility Model Content
[0004] The utility model aims to provide a target device for control points of unmanned aerial vehicle photogrammetry, which solves the problems raised in the background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a target device for control points of unmanned aerial vehicle photogrammetry, comprising a carrier plate, both ends of the carrier plate are connected to connecting plates, the tail end of the connecting plate is connected to a mounting plate, a servo motor is fixed at the middle of the bottom of the carrier plate, the transmission shaft of the servo motor passes through the carrier plate and is fixedly connected to a turntable, support plates are fixed on both sides of the top of the turntable, target plates are arranged on the upper sides of the two support plates, and the two sides of the bottom of the target plate are respectively fixedly connected to the tops of the two support plates.
[0006] By adopting the above technical solution, in actual use, first use the mounting plate to install the entire device at the control point, and then during use, start the servo motor to drive the turntable to rotate, so that the width direction of the support plate is consistent with the wind direction, so that the wind can pass between the two support plates, thereby effectively reducing wind resistance and avoiding the device from tilting due to the impact of strong wind.
[0007] As a preferred embodiment of the utility model, it also includes a bracket, fixed plates are fixed on both sides of the inner cavity of the bracket, the inner walls of the two fixed plates are connected to the first movable plate, the second movable plate is connected between the two first movable plates, the top of the second movable plate and the bottom of the connecting plate are fixedly connected, the fixed plate and the inner wall of the first movable plate are provided with a limiting slide groove, the inner cavity of the limiting slide groove is plugged with an adaptive limiting slider, the limiting slider and the corresponding first movable plate and the side wall of the second movable plate are fixedly connected, and an electric push rod is fixed to the bottom of the limiting slide groove, and the tail end of the electric push rod is fixedly connected to the bottom of the inner cavity of the limiting slide groove.
[0008] By adopting the above technical solution, the first electric push rod can drive the limit slider to slide in the limit slide groove, so that the first movable plate and the second movable plate can be lifted, thereby realizing two-stage pushing, so that the connecting plate can be pushed to a certain height, so that the target plate can be lifted to the upper side of the weeds, thereby preventing the target plate from being blocked by the weeds, and the surface weeds affect the recognition of the target plate.
[0009] As a preferred embodiment of the utility model, the middle parts of the two ends of the carrier plate are rotatably connected by a rotating shaft and a connecting plate, bolts penetrate both sides of the outer wall of the connecting plate, and matching threaded holes are opened on the end surface of the carrier plate corresponding to the bolts, and the bolts and the threaded holes are engaged.
[0010] By adopting the above technical solution, when not in use, loosen the bolts to disengage the threaded holes, and then rotate the carrier plate to rotate the target plate between the two brackets, thereby effectively reducing the size of the device and making it easier to store and carry the device.
[0011] As a preferred embodiment of the utility model, a plurality of evenly distributed balls are installed in a ring shape at the bottom of the turntable, and an annular groove is opened on the top of the carrier plate, and the balls roll in the annular groove.
[0012] By adopting the above technical solution, when the servo motor drives the turntable to rotate, the balls can be used to roll in the annular groove, thereby effectively reducing friction and avoiding wear between the turntable and the carrier plate.
[0013] As a preferred embodiment of the present invention, mounting holes are provided on both sides of the top of the mounting plate.
[0014] By adopting the above technical solution and setting the installation hole, during installation, a stabilizing pile can be inserted into the soil through the installation hole, thereby making the overall stability of the device high.
[0015] As a preferred embodiment of the present invention, triangular prisms are fixed to both side walls of the target plate.
[0016] By adopting the above technical solution, the setting of the triangular prism can further break the wind and further reduce wind resistance.
[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0018] The technical solution of the present application is a target device for control points of drone photogrammetry. After the device is stabilized on the ground with a stabilizing pile, a servo motor is started to drive the turntable to rotate, so that the width direction of the two support plates is aligned with the wind direction, so that the wind can pass between the two support plates, thereby effectively reducing wind resistance and avoiding the situation where the device is tilted due to the impact of strong wind. At the same time, triangular prisms are fixed on both side walls of the target plate, so that the wind can be further broken and the wind resistance can be further reduced.
[0019] The electric push rod corresponding to the fixed plate pushes the first movable plate to be lifted, and at the same time, the electric push rod of the first movable plate can push the second movable plate to be lifted, so that the two-stage pushing mechanism can be used to push the carrier plate to be lifted, so that the target plate can be lifted to the upper side of the weeds, thereby effectively avoiding the situation of being blocked;
[0020] By loosening the bolts and then rotating the carrier plate, the support plate and the target plate can be stored between the two brackets, so that the volume of the device is effectively reduced when not in use, making it convenient to carry and store. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:
[0022] Figure 1 This is a schematic diagram of the overall structure of the target device for control points of the unmanned aerial vehicle photogrammetry of the utility model;
[0023] Figure 2 A schematic diagram of the support structure of a target device for control points of unmanned aerial vehicle photogrammetry of the utility model;
[0024] Figure 3 The utility model is a schematic diagram of the connection structure of the carrier plate and the connecting plate of the target device for the control point of the unmanned aerial vehicle photogrammetry.
[0025] In the figure:
[0026] 1. Carrier plate; 11. Connecting plate; 12. Turntable; 13. Servo motor; 14. Support plate; 15. Target plate; 16. Triangular prism; 17. Bolt; 18. Threaded hole;
[0027] 2. Bracket; 21. Mounting plate; 22. Fixed plate; 23. First movable plate; 24. Second movable plate; 25. Limiting slide groove; 26. Limiting slider; 27. Electric push rod. DETAILED DESCRIPTION
[0028] See also Figure 1-3 The utility model provides a technical solution: a target device for control points of unmanned aerial vehicle photogrammetry, comprising a carrier plate 1, both ends of the carrier plate 1 are connected with connecting plates 11, the tail end of the connecting plate 11 is connected with a mounting plate 21, a servo motor 13 is fixed at the middle of the bottom of the carrier plate 1, the transmission shaft of the servo motor 13 passes through the carrier plate 1 and is fixedly connected with a turntable 12, both sides of the top of the turntable 12 are fixed with support plates 14, the upper sides of the two support plates 14 are provided with target plates 15, and the bottom sides of the target plate 15 are respectively fixedly connected with the tops of the two support plates 14;
[0029] In actual use, the device is first installed at the control point using the mounting plate 21, and then the servo motor 13 is started to drive the turntable 12 to rotate, so that the width direction of the support plate 14 is consistent with the wind direction, so that the wind can pass between the two support plates 14, thereby effectively reducing wind resistance and avoiding the device from tilting due to the impact of strong wind.
[0030] Furthermore, mounting holes are provided on both sides of the top of the mounting plate 21. The arrangement of the mounting holes enables the use of stabilizing piles to penetrate the mounting holes and be inserted into the soil during installation, thereby making the overall stability of the device high.
[0031] Furthermore, a plurality of evenly distributed balls are installed in a ring shape at the bottom of the turntable 12, and a ring groove is provided at the top of the carrier plate 1, and the balls roll in the ring groove, so that when the servo motor 13 drives the turntable 12 to rotate, the balls can roll in the ring groove, thereby effectively reducing friction and avoiding wear between the turntable 12 and the carrier plate 1;
[0032] It is worth mentioning that triangular prisms 16 are fixed to both side walls of the target plate 15. The setting of the triangular prisms 16 can further break the wind and further reduce wind resistance.
[0033] like Figure 1 and 2As shown; it also includes a bracket 2, fixed plates 22 are fixed on both sides of the inner cavity of the bracket 2, the inner walls of the two fixed plates 22 are connected to the first movable plate 23, a second movable plate 24 is connected between the two first movable plates 23, the top of the second movable plate 24 is fixedly connected to the bottom of the connecting plate 11, and the inner walls of the fixed plates 22 and the first movable plates 23 are provided with limited sliding grooves 25, and the inner cavity of the limited sliding grooves 25 is plugged with an adapted limited sliding block 26, and the limited sliding block 26 is fixedly connected to the corresponding first movable plate 23 and the side wall of the second movable plate 24, and an electric push rod 27 is fixed to the bottom of the limited sliding block 26 on one side, and the tail end of the electric push rod 27 is fixedly connected to the bottom of the inner cavity of the limited sliding groove 25;
[0034] The first electric push rod 27 can drive the limit slider 26 to slide in the limit slide groove 25, so that the first movable plate 23 and the second movable plate 24 can be lifted, thereby realizing two-stage pushing, so that the connecting plate 11 can be pushed to a certain height, so that the target plate 15 can be lifted to the upper side of the weeds, thereby preventing the target plate 15 from being blocked by the weeds, and then the surface weeds affect the recognition of the target plate 15;
[0035] like Figure 1 and 3 As shown; the middle of both ends of the carrier plate 1 is rotatably connected through a rotating shaft and a connecting plate 11, and bolts 17 are penetrated on both sides of the outer wall of the connecting plate 11, and an adapted threaded hole 18 is opened at the end surface of the carrier plate 1 corresponding to the bolt 17, and the bolt 17 and the threaded hole 18 are meshed;
[0036] When not in use, the bolt 17 is loosened to disengage the bolt 17 from the threaded hole 18, and then the carrier plate 1 is rotated to rotate the target plate 15 between the two brackets 2, so that the size of the device can be effectively reduced, thereby facilitating the storage and carrying of the device.
[0037] The implementation principle of the target device for control points of drone photogrammetry of the present application is as follows: in actual use, the device is first installed at the position of the control point using the mounting plate 21, and then during use, the servo motor 13 is started to drive the turntable 12 to rotate, so that the width direction of the support plate 14 is consistent with the wind direction, so that the wind can pass between the two support plates 14, thereby effectively reducing wind resistance and avoiding the device from tilting due to the impact of strong wind. At the same time, the first electric push rod 27 can drive the limit slider 26 to slide in the limit slide groove 25 The first movable plate 23 and the second movable plate 24 are moved, thereby the first movable plate 23 and the second movable plate 24 are lifted, thereby realizing two-stage pushing, thereby pushing the connecting plate 11 to be lifted to a certain height, thereby the target plate 15 is lifted to the upper side of the weeds, thereby preventing the target plate 15 from being blocked by the weeds, and then the surface weeds affect the recognition of the target plate 15. When not in use, the bolt 17 is loosened to disengage the bolt 17 from the threaded hole 18, and then the carrier plate 1 is rotated to rotate the target plate 15 between the two brackets 2, thereby effectively reducing the size of the device, thereby facilitating the storage and carrying of the device.
[0038] In addition, the components included in the target device for control points of unmanned aerial vehicle photogrammetry of the utility model are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. In the idle part of the device, all the above-mentioned electrical components, which refer to power elements, electrical components, and adapted monitoring computers and power supplies, are connected through wires. The specific connection means should refer to the following working principle, and the electrical connection is completed in the working order of each electrical component. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.
Claims
1. A target device for control points of unmanned aerial vehicle photogrammetry, comprising a carrier plate (1), characterized in that: Both ends of the carrier plate (1) are connected to connecting plates (11), the tail end of the connecting plate (11) is connected to a mounting plate (21), a servo motor (13) is fixed at the middle of the bottom of the carrier plate (1), a transmission shaft of the servo motor (13) passes through the carrier plate (1) and is fixedly connected to a turntable (12), support plates (14) are fixed on both sides of the top of the turntable (12), target plates (15) are arranged on the upper sides of the two support plates (14), and both sides of the bottom of the target plate (15) are respectively fixedly connected to the tops of the two support plates (14).
2. The target device for control points of drone photogrammetry according to claim 1, characterized in that: The invention also comprises a bracket (2), wherein both sides of the inner cavity of the bracket (2) are fixed with fixed plates (22), the inner walls of the two fixed plates (22) are connected with a first movable plate (23), a second movable plate (24) is connected between the two first movable plates (23), the top of the second movable plate (24) is fixedly connected with the bottom of the connecting plate (11), the inner walls of the fixed plate (22) and the first movable plate (23) are provided with a limiting slide groove (25), the inner cavity of the limiting slide groove (25) is plugged with an adaptive limiting slider (26), the limiting slider (26) is fixedly connected with the corresponding side walls of the first movable plate (23) and the second movable plate (24), an electric push rod (27) is fixedly connected to the bottom of the limiting slider (26) on one side, and the tail end of the electric push rod (27) is fixedly connected with the bottom of the inner cavity of the limiting slide groove (25).
3. The target device for control points of drone photogrammetry according to claim 1, characterized in that: The middle of the two ends of the carrier plate (1) are rotatably connected via a rotating shaft and a connecting plate (11), bolts (17) are passed through both sides of the outer wall of the connecting plate (11), and matching threaded holes (18) are opened at the end surface of the carrier plate (1) corresponding to the bolts (17), and the bolts (17) and the threaded holes (18) are meshed.
4. The target device for control points of drone photogrammetry according to claim 1, characterized in that: The bottom of the rotating disk (12) is annularly mounted with a plurality of evenly distributed balls, and the top of the carrier plate (1) is provided with an annular groove, in which the balls roll.
5. The target device for control points of drone photogrammetry according to claim 1, characterized in that: Mounting holes are provided on both sides of the top of the mounting plate (21).
6. The target device for control points of drone photogrammetry according to claim 1, characterized in that: Triangular prisms (16) are fixed to both side walls of the target plate (15).