An anti-shake device for tilt photography of unmanned aerial vehicle

Abstract

The present invention relates to the field of aerial photography technology, and specifically to an anti-shake device for tilt photography of unmanned aerial vehicles, which includes: a fuselage connection seat, a connection hole is provided on the top of the fuselage connection seat, a flip bracket is movably connected at the bottom, and a buffer is provided between the flip bracket and the fuselage connection seat; an anti-shake positioning seat, the anti-shake positioning seat is fixedly arranged at the bottom of the flip bracket, and three installation planes are distributed around the same longitudinal axis at the bottom of the anti-shake positioning seat; an anti-shake connection frame, a connection plate is provided on the top of the anti-shake connection frame, and connection windows are provided in the center of each connection plate, and a pan-tilt connection seat is provided at the bottom of the anti-shake connection frame; a buffer capsule, the buffer capsule is a cylindrical structure embedded in each connection window, and is connected to the installation plane through a positioning column that passes through the buffer capsule. The present invention achieves a full range of buffer anti-shake effects through three buffer capsules, so that during tilt photography, the camera will not cause image blurring due to high-frequency vibration, so that the captured image data is clearer and the modeling accuracy is higher.

Description

Technical Field

[0001] The invention relates to the technical field of aerial photography, and in particular to an anti-shake device for tilt photography of unmanned aerial vehicles. Background Art

[0002] Drone oblique photography modeling technology came into being with the development of drone aerial photography technology. Compared with traditional three-dimensional modeling methods, it has the advantages of low cost, high mobility, high precision and high timeliness. Therefore, oblique photography modeling is gradually becoming one of the important modeling methods and plays an important role in the development of digital cities.

[0003] Among them, oblique photography technology is to carry multiple lens cameras on the same flying platform, collect images from multiple angles such as vertical and oblique during the flight, and obtain information about ground objects. However, during the aerial photography process, the camera's gimbal connection seat will shake due to the influence of the drone, and further cause the camera to shake greatly, seriously affecting the imaging effect of the camera, thereby reducing the modeling accuracy.

[0004] In summary, how to avoid the influence of high-frequency jitter of the drone on the camera during tilt photography is a problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0005] The present invention provides an anti-shake device for oblique photography of unmanned aerial vehicles, which realizes an all-round buffering and anti-shake effect through three buffer bags, and filters high-frequency vibrations, so that during the oblique photography process, the camera will not cause image blurring due to high-frequency vibrations, so that the captured image data is clearer and the modeling accuracy is higher.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for anti-shake of tilted photography of unmanned aerial vehicle, comprising: a fuselage connecting seat, a connecting hole is provided on the top of the fuselage connecting seat, a flip bracket is movably connected to the bottom, and a buffer is provided between the flip bracket and the fuselage connecting seat; an anti-shake positioning seat, the anti-shake positioning seat is fixedly arranged at the bottom of the flip bracket, and three mounting planes are distributed around the same longitudinal axis at the bottom of the anti-shake positioning seat, and the three mounting planes are perpendicular to each other; an anti-shake connecting frame, a connecting plate is provided on the top of the anti-shake connecting frame, which is parallel to the three mounting planes respectively, and a connecting window is provided in the center of each connecting plate, and a gimbal connecting seat is provided at the bottom of the anti-shake connecting frame; a buffer capsule, the buffer capsule is a cylindrical structure embedded in each of the connecting windows, and is connected to the mounting plane through a positioning column passing through the buffer capsule, and a fixing groove is provided in the middle of the outer wall of each of the buffer capsules corresponding to the connecting window.

[0007] Preferably, the positioning column is composed of a mounting column and a locking column; a support plate is circumferentially provided at one end of the mounting column corresponding to the mounting plane, the locking column is sleeved on the outside of the mounting column, and a locking plate is circumferentially provided at one end of the locking column away from the support plate, and the positioning column clamps the two ends of the buffer bag through the support plate and the locking plate.

[0008] Preferably, it also includes a magnetic suspension support system, which is composed of a first magnetic circle arranged on the support plate, a second magnetic circle arranged on the anti-shake connecting frame and corresponding to the first magnetic circle, a third magnetic circle arranged on the locking plate, and a fourth magnetic circle arranged on the anti-shake connecting frame and corresponding to the third magnetic circle, the first magnetic circle repels the second magnetic circle, and the third magnetic circle repels the fourth magnetic circle; the diameters of the second magnetic circle and the fourth magnetic circle are both larger than the diameters of the first magnetic circle and the third magnetic circle.

[0009] Preferably, each of the buffer bags is provided with an air nozzle, and the anti-shake positioning seat is provided with an air pump and a first solenoid valve connected to the air nozzle, and the air pump and the first solenoid valve are electrically connected to the drone receiver through a driving board, respectively.

[0010] Preferably, the top center of the flip bracket is connected to the fuselage connecting seat through a cross-axis universal joint; the buffer is a plurality of gas springs distributed around the cross-axis universal joint, and each of the gas springs is hinged between the flip bracket and the fuselage connecting seat.

[0011] Preferably, the gas spring is composed of a cylinder and a shaft rod passing through the cylinder, a piston cooperating with the inner wall of the cylinder is provided in the middle of the shaft rod, and the cylinder is isolated into two air chambers by the piston, and air vents connected to the corresponding air chambers are provided at both ends of the cylinder, the two air vents are connected to each other through a second solenoid valve, and the second solenoid valve is electrically connected to the drone receiver.

[0012] The beneficial effects of the present invention are as follows: the flight attitude of the UAV is adapted by flipping the bracket, and the action is buffered by using the buffer, so as to reduce the repeated swinging state of the anti-shake positioning seat at the bottom caused by the maneuvering process of the UAV. The three buffer capsules make the axes perpendicular to each other through their respective installation planes, so that each connection window and the corresponding positioning column form translation, rotation, tilt and axial buffering movements, and achieve a full range of buffering and anti-shake effects, and filter high-frequency vibrations, so that during the tilt photography process, the camera will not cause image blurring due to high-frequency vibrations, so that the captured image data is clearer and the modeling accuracy is higher. The support plate and the locking plate form a limiting structure at both ends of the positioning column, which is used to constrain the buffer capsule, so as to absorb the vibration transmitted by the inorganic machine through the elastic deformation of the buffer capsule, and avoid the vibration from being transmitted to the anti-shake connecting frame through the connecting window. The magnetic suspension support system uses the repulsive force of the magnets to assist the buffer capsule in supporting the anti-shake connecting frame, thereby improving the supporting force of the anti-shake connecting frame, and at the same time, the constraint force of the axis positioning is realized through the size of the magnetic circle. The cushioning bag uses the compressibility of air to achieve cushioning force. The operator controls the air pump and the first solenoid valve through the remote control to adjust the pressure inside the cushioning bag, so that the cushioning bag always maintains the best working state and is suitable for different weights of the gimbal connection seat load. The cross-axis universal joint ensures the relative angle between the flip bracket and the fuselage connection seat, thereby ensuring that the orientation of the flip bracket is consistent with the drone. The opening and closing state of the second solenoid valve can be achieved through the size of the opening, thereby realizing the slow adjustment of the piston working range and achieving the smooth movement effect of the flip bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a partial structural cross-sectional view of the buffer bag of the present invention.

[0016] Figure 3 It is a schematic diagram of the air path structure of the cushion bag of the present invention.

[0017] Figure 4 Schematic diagram of the gas spring of the present invention.

[0018] In the figure: 1. Body connecting seat; 2. Flip bracket; 3. Anti-shake positioning seat; 4. Installation plane; 5. Anti-shake connecting frame; 6. Connecting plate; 7. Pan / tilt connecting seat; 8. Buffer bag; 9. Mounting column; 10. Locking column; 11. Support plate; 12. Locking plate; 13. First magnetic circle; 14. Second magnetic circle; 15. Third magnetic circle; 16. Fourth magnetic circle; 17. Air nozzle; 18. Air pump; 19. First solenoid valve; 20. Cross-axis universal joint; 21. Gas spring; 22. Cylinder; 23. Shaft; 24. Piston; 25. Vent; 26. Second solenoid valve. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a device for anti-shake of tilt photography of unmanned aerial vehicle comprises: a fuselage connection seat 1, wherein a connection hole is provided on the top of the fuselage connection seat 1, and a flip bracket 2 is movably connected to the bottom, and a buffer is provided between the flip bracket 2 and the fuselage connection seat 1; an anti-shake positioning seat 3, wherein the anti-shake positioning seat 3 is fixedly arranged at the bottom of the flip bracket 2, and three mounting planes 4 are distributed around the same longitudinal axis at the bottom of the anti-shake positioning seat 3, and the three mounting planes 4 are perpendicular to each other; an anti-shake connection frame 5, wherein a connection plate 6 which is parallel to the three mounting planes 4 is provided on the top of the anti-shake connection frame 5, and a connection window is provided in the center of each of the connection plates 6, and a gimbal connection seat 7 is provided at the bottom of the anti-shake connection frame 5; a buffer capsule 8, wherein the buffer capsule 8 is a cylindrical structure embedded in each of the connection windows, and is connected to the mounting plane 4 through a positioning column penetrating the buffer capsule 8, and a fixing groove is provided in the middle of the outer wall of each of the buffer capsules 8 corresponding to the connection window.

[0021] In the above arrangement, the fuselage connecting seat 1 is fixedly connected to the bottom of the UAV by bolts or brackets passing through the connecting holes, and the flip bracket 2 movably connected at the bottom of the fuselage connecting seat 1 can adapt well to the flight posture of the UAV, and buffer the action through the buffer, thereby reducing the repeated swinging of the anti-shake positioning seat 3 at the bottom caused by the maneuvering of the UAV. The anti-shake connecting frame 5 is connected to the anti-shake positioning seat 3 through three buffer bags 8, and the three buffer bags 8 make the axes perpendicular to each other through their respective mounting planes 4, so that each connecting window and the corresponding positioning column constitute translation, rotation, tilt and axial buffering movement, so that the gimbal connecting seat 7 can achieve a full range of buffering and anti-shake effects under the action of the anti-shake connecting frame 5, and through the mechanical properties of the buffer bag 8, the effect of filtering high-frequency vibrations is achieved, so that during the tilt photography process, the camera will not cause image blur due to high-frequency vibrations, so that the captured image data is clearer and the modeling accuracy is higher.

[0022] The positioning column is composed of a mounting column 9 and a locking column 10; the mounting column 9 is circumferentially provided with a support plate 11 at one end corresponding to the mounting plane 4, the locking column 10 is sleeved on the outside of the mounting column 9, and the locking plate 12 is circumferentially provided at one end of the locking column 10 away from the support plate 11, and the positioning column clamps the two ends of the buffer bag 8 through the support plate 11 and the locking plate 12.

[0023] In this arrangement, the support plate 11 and the locking plate 12 form a limiting structure at both ends of the positioning column, which is used to constrain the buffer capsule 8, thereby absorbing the vibration transmitted by the inorganic machine through the elastic deformation of the buffer capsule 8, thereby preventing the vibration from being transmitted to the anti-shake connecting frame 5 through the connecting window.

[0024] It also includes a magnetic suspension support system, which consists of a first magnetic circle 13 arranged on the support plate 11, a second magnetic circle 14 arranged on the anti-shake connecting frame 5 and corresponding to the first magnetic circle 13, a third magnetic circle 15 arranged on the locking plate 12, and a fourth magnetic circle 16 arranged on the anti-shake connecting frame 5 and corresponding to the third magnetic circle 15. The first magnetic circle 13 repels the second magnetic circle 14, and the third magnetic circle 15 repels the fourth magnetic circle 16; the diameters of the second magnetic circle 14 and the fourth magnetic circle 16 are both larger than the diameters of the first magnetic circle 13 and the third magnetic circle 15.

[0025] In this configuration, the magnetic suspension support system utilizes the repulsive force of magnets to assist the buffer capsule 8 in supporting the anti-shake connection frame 5, thereby increasing the support force for the anti-shake connection frame 5, while also achieving the constraint force for axial positioning through the size of the magnetic ring.

[0026] Each of the buffer bags 8 is provided with an air nozzle 17, and the anti-shake positioning seat 3 is provided with an air pump 18 and a first solenoid valve 19 connected to the air nozzle 17. The air pump 18 and the first solenoid valve 19 are electrically connected to the drone receiver through a driving board.

[0027] With this arrangement, each buffer bag 8 is filled with gas, and the compressibility of air is used to achieve buffering force. As the UAV rises and the operating temperature changes, the gas pressure in the buffer bag 8 changes, thereby affecting the performance of the buffer bag 8. The operator controls the operation of the air pump 18 and the first solenoid valve 19 through the remote control to adjust the pressure inside the buffer bag 8, thereby allowing the buffer bag 8 to always maintain the best working state and be suitable for gimbal loads of different weights.

[0028] The top center of the flip bracket 2 is connected to the fuselage connecting seat 1 through a cross-axis universal joint 20; the buffer is a plurality of gas springs 21 distributed around the cross-axis universal joint 20, and each gas spring 21 is hinged between the flip bracket 2 and the fuselage connecting seat 1.

[0029] Through the above arrangement, the cross-axis universal joint 20 ensures the relative angle between the flip bracket 2 and the fuselage connecting seat 1, thereby ensuring that the orientation of the flip bracket 2 is consistent with that of the drone.

[0030] The gas spring 21 is composed of a cylinder 22 and a shaft rod 23 passing through the cylinder 22. A piston 24 is provided in the middle of the shaft rod 23 to cooperate with the inner wall of the cylinder 22, and the cylinder 22 is isolated into two air chambers by the piston 24. Vents 25 connected to the corresponding air chambers are provided at both ends of the cylinder 22. The two vents 25 are connected to each other through a second solenoid valve 26, and the second solenoid valve 26 is electrically connected to the drone receiver.

[0031] In this setting, the second solenoid valve 26 is used to control the connection state of the two air chambers. When the second solenoid valve 26 is opened, the two air chambers are connected. At this time, the shaft 23 drives the piston 24 to move freely along the axis in the cylinder 22, so that the flip bracket 2 can flip freely to adapt to the posture of the drone. When the second solenoid valve 26 is closed, the two air chambers are closed to each other. At this time, the movement of the piston 24 is affected by the air pressure, and the movement of the piston 24 is elastically buffered. This state is used to correspond to the anti-shake effect of the drone in the same flight state, avoiding the flip bracket 2 from swinging at a large angle. As a preferred solution, the opening and closing state of the second solenoid valve 26 can be achieved by the size of the opening, so as to achieve the slow adjustment of the working range of the piston 24 and achieve the smooth movement effect of the flip bracket 2.

[0032] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An anti-shake device for tilt photography of unmanned aerial vehicles, characterized in that ,include: A fuselage connection seat (1), wherein a connection hole is provided at the top of the fuselage connection seat (1), a flip bracket (2) is movably connected to the bottom, and a buffer is provided between the flip bracket (2) and the fuselage connection seat (1); An anti-shake positioning seat (3), the anti-shake positioning seat (3) being fixedly arranged at the bottom of the flip bracket (2), and the bottom of the anti-shake positioning seat (3) is provided with three mounting planes (4) distributed around the same longitudinal axis, and the three mounting planes (4) are perpendicular to each other; An anti-shake connecting frame (5), wherein the top of the anti-shake connecting frame (5) is provided with connecting plates (6) respectively parallel to the three mounting planes (4), each connecting plate (6) is provided with a connecting window in the center, and the bottom of the anti-shake connecting frame (5) is provided with a pan / tilt connecting seat (7); A buffer capsule (8), the buffer capsule (8) being a cylindrical structure embedded in each of the connection windows and connected to the mounting plane (4) via a positioning column penetrating the buffer capsule (8), and a fixing groove being provided in the middle of the outer wall of each of the buffer capsules (8) corresponding to the connection window; The positioning column is composed of a mounting column (9) and a locking column (10); a support plate (11) is circumferentially provided at one end of the mounting column (9) corresponding to the mounting plane (4); the locking column (10) is sleeved outside the mounting column (9); and a locking plate (12) is circumferentially provided at one end of the locking column (10) away from the support plate (11); the positioning column clamps the two ends of the buffer bag (8) through the support plate (11) and the locking plate (12); The invention also comprises a magnetic suspension support system, wherein the magnetic suspension support system comprises a first magnetic circle (13) arranged on the support plate (11), a second magnetic circle (14) arranged on the anti-shake connection frame (5) and corresponding to the first magnetic circle (13), a third magnetic circle (15) arranged on the locking plate (12), and a fourth magnetic circle (16) arranged on the anti-shake connection frame (5) and corresponding to the third magnetic circle (15), wherein the first magnetic circle (13) repels the second magnetic circle (14), and the third magnetic circle (15) repels the fourth magnetic circle (16); and the diameters of the second magnetic circle (14) and the fourth magnetic circle (16) are both larger than the diameters of the first magnetic circle (13) and the third magnetic circle (15).

2. The anti-shake device for tilt photography of unmanned aerial vehicle according to claim 1, characterized in that: Each of the buffer bags (8) is provided with an air nozzle (17), and the anti-shake positioning seat (3) is provided with an air pump (18) and a first solenoid valve (19) which are connected to the air nozzle (17), and the air pump (18) and the first solenoid valve (19) are electrically connected to the drone receiver via a drive board.

3. The anti-shake device for tilt photography of unmanned aerial vehicle according to claim 1, characterized in that: The top center of the flip bracket (2) is connected to the fuselage connection seat (1) via a cross-axis universal joint (20); the buffer is a plurality of gas springs (21) distributed around the cross-axis universal joint (20), and each gas spring (21) is hinged between the flip bracket (2) and the fuselage connection seat (1).

4. The anti-shake device for tilt photography of unmanned aerial vehicle according to claim 3, characterized in that: The gas spring (21) is composed of a cylinder (22) and a shaft (23) passing through the cylinder (22); a piston (24) is provided in the middle of the shaft (23) and cooperates with the inner wall of the cylinder (22); the cylinder (22) is separated into two air chambers by the piston (24); both ends of the cylinder (22) are provided with air vents (25) connected to the corresponding air chambers; the two air vents (25) are connected to each other via a second solenoid valve (26); and the second solenoid valve (26) is electrically connected to the drone receiver.

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