An automatic attitude stabilization device for aerial photography sensors of surveying UAVs

Abstract

This utility model discloses an automatic attitude stabilization device for a surveying UAV aerial photography sensor, relating to the field of surveying tool technology. It includes a base plate and a top plate, with the top plate located above the base plate. Upright poles are fixed at the four corners of the upper surface of the base plate, and mounting blocks are installed on the top of the upright poles via shock-absorbing components. Bolts that mate with the mounting blocks are provided on the top plate. A circular hole is formed through the top plate, and a rotating rod is rotatably connected inside the hole. The rotating rod is fixed by a positioning component, and an upper crossbar is fixedly connected to the top of the rotating rod. This automatic attitude stabilization device for a surveying UAV aerial photography sensor, through the inclusion of shock-absorbing components, upright poles, an upper crossbar, and a lower crossbar, achieves shock absorption, reducing the impact of UAV body vibration on shooting, ensuring shooting quality. Simultaneously, the state of the shock-absorbing components can be controlled, improving the efficiency of the automatic attitude stabilization device for the surveying UAV aerial photography sensor.

Description

Technical Field

[0001] This utility model relates to the field of surveying tools technology, and in particular to an automatic attitude stabilization device for a surveying UAV aerial photography sensor. Background Technology

[0002] A drone is an unmanned aerial vehicle controlled by remote control equipment and its own programs. Drone aerial photography technology is a new type of aerial remote sensing technology developed after satellite remote sensing and large aircraft remote sensing. With its advantages of maneuverability, ease of operation, low-altitude flight, and low cost, it is increasingly widely used in data acquisition processes for small-area mapping and high-resolution image map production. Orthophoto maps are planar maps created from orthophotos, featuring a kilometer grid, map borders, and annotations. They vividly and intuitively reflect topography, features, and landform characteristics, and have wide applications in urban planning, engineering design, land management, and other fields.

[0003] For example, a patent entitled "An Automatic Attitude Stabilization Device for Aerial Photography Sensors of a Mapping UAV" (patent application number: CN202022513687.2) discloses an automatic attitude stabilization device for aerial photography sensors of a mapping UAV. The device is fixed to the UAV through the fixing screw holes on the base plate. During the mapping process, the user can adjust the position of the camera device according to the image fed back by the camera device. However, in actual use, since no buffer component is set on the base plate, the vibration of the UAV body caused by the rotation of the propeller and the impact of airflow during the flight is easily transmitted to the sensor, interfering with the attitude stabilization adjustment action and reducing the shooting quality.

[0004] Therefore, it is necessary to propose an automatic attitude stabilization device for surveying UAV aerial photography sensors to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic attitude stabilization device for a surveying UAV aerial photography sensor, in order to solve the problem that, in actual use, the lack of a buffer component on the base plate makes it easy for the vibration of the UAV caused by propeller rotation, airflow impact, etc., to be transmitted to the sensor, interfering with the attitude stabilization adjustment action and reducing the shooting quality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic attitude stabilization device for a surveying and mapping UAV aerial photography sensor, comprising a base plate and a top plate, wherein the top plate is located above the base plate;

[0007] Uprights are fixed at the four corners of the upper surface of the base plate, and mounting blocks are installed on the top of the uprights via shock-absorbing components. Bolts that mate with the mounting blocks are provided on the top plate.

[0008] A circular hole is provided through the top plate, and a rotating rod is rotatably connected inside the circular hole. The rotating rod is fixed by a positioning component. An upper cross is fixedly connected to the top of the rotating rod, and the four ends of the upper cross are abutted and engaged with four bolts one by one.

[0009] The bottom end of the rotating rod is fixedly connected to a lower cross, and the four ends of the lower cross are matched with the four uprights in a one-to-one limiting fit.

[0010] The top plate is equipped with an adjustment device for mounting aerial photography sensors.

[0011] Preferably, the top of the upright has an integrally formed flange, and the four ends of the lower cross are provided with lower slots for the corresponding flanges to be inserted.

[0012] Preferably, each of the four ends of the upper cross has an upper slot, which abuts against the corresponding bolt.

[0013] Preferably, the positioning component includes an ear plate, a pin, a second spring, and a slot. There are two slots, both of which are located on the lower surface of the top plate. The ear plate is fixedly connected to the rotating rod. The pin is slidably disposed on the ear plate and alternately engages with the two slots. The second spring is fitted onto the pin.

[0014] Preferably, the shock absorption assembly includes a damping element and a first spring. The top end of the damping element is fixedly connected to the mounting block, and the bottom end of the damping element is fixedly connected to the upright. The first spring is fitted onto the outside of the damping element, with its top end fixedly connected to the mounting block and its bottom end fixedly connected to the upright.

[0015] Preferably, the base plate has screw holes.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] 1. This utility model achieves shock absorption by setting up shock-absorbing components, uprights, upper cross and lower cross structures, thereby reducing the impact of drone body vibration on shooting and ensuring shooting quality. At the same time, the state of the shock-absorbing components can be controlled to improve the efficiency of the automatic attitude stabilization device of the aerial photography sensor of the surveying drone.

[0018] 2. The distance between the top plate and the top of the pole remains unchanged, and the damping components and the first spring cannot extend or retract, which facilitates the precise installation and fixation of the aerial photography sensor;

[0019] 3. The bolts abut against the inner wall of the corresponding upper slot, thereby locking the bolts and preventing them from loosening under the influence of drone body vibration, ensuring the stability of use. In addition, the damping components and the first spring are retractable, which can achieve the shock absorption effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the automatic attitude stabilization device for a surveying and mapping UAV aerial photography sensor from one perspective.

[0021] Figure 2 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0022] Figure 3 This is a schematic diagram of the automatic attitude stabilization device for the aerial photography sensor of the UAV surveying model of this utility model from another perspective.

[0023] Figure 4 This is a schematic diagram of the rotating rod and lower cross structure of this utility model.

[0024] Figure 5 This utility model Figure 4 Enlarged schematic diagram of the structure at point B.

[0025] Figure 6 This is a schematic diagram of the upper and lower cross structures of this utility model.

[0026] In the diagram: 1. Base plate; 2. Screw hole; 3. Top plate; 4. Upright pole; 5. Damping component; 6. First spring; 7. Mounting block; 8. Bolt; 9. Flange; 10. Round hole; 11. Rotating rod; 12. Upper cross-shaped component; 13. Upper slot; 14. Lower cross-shaped component; 15. Lower slot; 16. Ear plate; 17. Pin; 18. Second spring; 19. Slot; 20. Adjustment device. Detailed Implementation

[0027] This utility model provides, for example Figures 1-6 The automatic attitude stabilization device for a surveying UAV aerial photography sensor shown includes a base plate 1 with multiple screw holes 2. In use, screws or other screws are passed through the screw holes 2 to connect and fix the device to the UAV. The connection and installation of the automatic attitude stabilization device to the UAV is a common existing technology and will not be described in detail here.

[0028] A top plate 3 is provided above the base plate 1. Uprights 4 are welded and fixed at the four corners of the upper surface of the base plate 1. Mounting blocks 7 are installed on the top of the uprights 4 through shock-absorbing components. Through holes are opened at the four corners of the top plate 3, and bolts 8 are inserted through the through holes. At the same time, threaded grooves are opened on the mounting blocks 7. During installation, the bolts 8 pass through the through holes and mate with the threaded grooves on the mounting blocks 7. By rotating the bolts 8, the mounting blocks 7 are fixed on the top plate 3.

[0029] The damping assembly includes a damping element 5 and a first spring 6. The top end of the damping element 5 is fixedly connected to the mounting block 7, and the bottom end of the damping element 5 is fixedly connected to the upright 4. The first spring 6 is fitted onto the outside of the damping element 5. The top end of the first spring 6 is fixedly connected to the mounting block 7, and the bottom end of the first spring 6 is fixedly connected to the upright 4. The damping element 5 and the first spring 6 work together to achieve the effect of damping.

[0030] The installation block 7 and bolt 8 are provided to facilitate disassembly, and to inspect and replace the damping component 5 and the first spring 6.

[0031] The top plate 3 is equipped with an adjustment device 20 for mounting aerial photography sensors. The adjustment device 20 includes a motor, a level, a mounting plate, and other structures, which can adapt to the attitude adjustment requirements under different surveying scenarios. The adjustment device 20 is a common existing technology and will not be described in detail here.

[0032] Considering that if the damping element 5 and the first spring 6 can extend or retract during the replacement of the aerial photography sensor, it will affect the accuracy of the installation and fixation of the aerial photography sensor. In order to control the usage state of the damping element 5 and the first spring 6, a circular hole 10 is provided through the top plate 3. A rotating rod 11 is rotatably connected inside the circular hole 10. An upper cross 12 is fixedly connected to the top of the rotating rod 11. Each of the four ends of the upper cross 12 is provided with an upper slot 13. The upper slot 13 abuts against the corresponding bolt 8. When the bolt 8 abuts against the inner wall of the corresponding upper slot 13, if the position of the upper cross 12 is fixed, it can prevent the bolt 8 from rotating at will. The upper slot 13 can be set to be serrated to increase the friction.

[0033] The top of the upright pole 4 is integrally formed with a flange 9, and the bottom of the rotating pole 11 is fixedly connected with a lower cross 14. The four ends of the lower cross 14 are provided with lower slots 15, which are used for the corresponding flanges 9 to be inserted to achieve the purpose of limiting the position.

[0034] The rotating rod 11 is fixed by a positioning assembly, which includes an ear plate 16, a pin 17, a second spring 18, and a slot 19. There are two slots 19, both of which are located on the lower surface of the top plate 3. The ear plate 16 is fixedly connected to the rotating rod 11. The pin 17 is slidably disposed on the ear plate 16 and alternately engages with the two slots 19. The second spring 18 is fitted onto the pin 17. The top end of the second spring 18 is fixedly connected to the ear plate 16, and the bottom end of the second spring 18 is fixedly connected to the pin 17.

[0035] When installing and fixing the aerial photography sensor, the pin 17 is pulled out from the corresponding slot 19, and the upper cross 12 and lower cross 14 are rotated so that the flange 9 is inserted into the corresponding lower slot 15. Then the pin 17 is released, and the restoring force of the second spring 18 causes the pin 17 to be inserted into another slot 19. The upper cross 12 and lower cross 14 will not rotate. At this time, the distance between the top plate 3 and the top of the upright 4 remains unchanged, and the damping component 5 and the first spring 6 cannot extend or retract, which facilitates the accurate installation and fixing of the aerial photography sensor.

[0036] After the aerial camera sensor is installed and fixed, the pin 17 is pulled out from the corresponding slot 19. The upper cross 12 and lower cross 14 are rotated in the opposite direction so that the flange 9 is misaligned with the corresponding lower slot 15. Then, the pin 17 is released, and the restoring force of the second spring 18 causes the pin 17 to be inserted into another slot 19. The upper cross 12 and lower cross 14 will not rotate. At this time, the bolt 8 abuts against the inner wall of the corresponding upper slot 13, so that the bolt 8 will not rotate at will, thereby locking the bolt 8 and preventing it from loosening under the influence of the UAV body vibration, ensuring the stability of use. In addition, the damping component 5 and the first spring 6 are telescopic, which can achieve the shock absorption effect.

[0037] By setting up shock-absorbing components, pole 4, upper cross 12 and lower cross 14 and other structures, the shock-absorbing function is realized, reducing the impact of drone body vibration on shooting, ensuring shooting quality, and at the same time the state of the shock-absorbing components can be controlled, improving the efficiency of the automatic attitude stabilization device of the aerial photography sensor of the surveying drone.

Claims

1. An automatic attitude stabilization device for a surveying UAV aerial photography sensor, comprising a base plate (1) and a top plate (3), characterized in that: The top plate (3) is located above the bottom plate (1); Uprights (4) are fixed at the four corners of the upper surface of the base plate (1). The top of the uprights (4) is equipped with mounting blocks (7) through shock-absorbing components. Bolts (8) that mate with the mounting blocks (7) are provided on the top plate (3). A circular hole (10) is provided through the top plate (3). A rotating rod (11) is rotatably connected inside the circular hole (10). The rotating rod (11) is fixed by a positioning component. An upper cross (12) is fixedly connected to the top of the rotating rod (11). The four ends of the upper cross (12) are abutted and engaged with four bolts (8) in a one-to-one correspondence. The bottom end of the rotating rod (11) is fixedly connected to a lower cross (14), and the four ends of the lower cross (14) are correspondingly limited to the four uprights (4); An adjustment device (20) for mounting aerial photography sensors is installed on the top plate (3).

2. The automatic attitude stabilization device for a surveying UAV aerial photography sensor according to claim 1, characterized in that: The top of the pole (4) is integrally formed with a flange (9), and the four ends of the lower cross (14) are provided with lower slots (15), which are for the corresponding flanges (9) to be inserted.

3. The automatic attitude stabilization device for a mapping-type UAV aerial photography sensor according to claim 1, characterized in that: The upper cross (12) has upper slots (13) at all four ends, and the upper slots (13) abut against the corresponding bolts (8).

4. The automatic attitude stabilization device for a mapping UAV aerial photography sensor according to claim 1, characterized in that: The positioning assembly includes an ear plate (16), a pin (17), a second spring (18), and a slot (19). There are two slots (19), both of which are located on the lower surface of the top plate (3). The ear plate (16) is fixedly connected to the rotating rod (11). The pin (17) is slidably disposed on the ear plate (16). The pin (17) alternately engages with the two slots (19). The second spring (18) is fitted onto the pin (17).

5. The automatic attitude stabilization device for a surveying UAV aerial photography sensor according to claim 1, characterized in that: The shock absorption assembly includes a damping element (5) and a first spring (6). The top end of the damping element (5) is fixedly connected to the mounting block (7), and the bottom end of the damping element (5) is fixedly connected to the upright (4). The first spring (6) is fitted on the outside of the damping element (5). The top end of the first spring (6) is fixedly connected to the mounting block (7), and the bottom end of the first spring (6) is fixedly connected to the upright (4).

6. The automatic attitude stabilization device for a surveying UAV aerial photography sensor according to claim 1, characterized in that: The base plate (1) has screw holes (2).

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