A scanning device for preventing pixel offset for aerial survey drones

Abstract

The present invention discloses a scanning device for preventing pixel offset for an aerial survey drone, specifically relating to the field of aerial survey technology. The device comprises a drone body, a camera, and a scanning module. Horizontal balance plates are provided on both sides of the drone body. A fixing plate is provided at the bottom end of the drone body. A longitudinal balance plate is provided at the bottom end of the fixing plate. The horizontal balance plate includes a storage tube, a central tube is provided inside the storage tube, a micro motor is fixedly provided at the front side of the storage tube, and a connecting groove is provided at the outer end of the storage tube. The present invention installs horizontal and longitudinal balance plates on the drone body, and adjusts the angle of the longitudinal balance plate according to the wind direction when wind blows, thereby reducing the force-bearing area of the horizontal and longitudinal balance plates in the wind. The wind force can also be used to hinder the swing of the horizontal and longitudinal balance plates, indirectly making the drone body more stable.

Description

Technical Field

[0001] The present invention relates to the field of aerial survey technology, and more particularly to a scanning device for preventing pixel point deviation for an aerial survey unmanned aerial vehicle. Background Art

[0002] Aerial surveying uses unmanned aircraft as aerial platforms and airborne remote sensing equipment, such as high-resolution digital cameras, lightweight optical cameras, infrared scanners, etc. These devices are used to scan images, and then computers are used to process the image information and produce images according to certain accuracy requirements.

[0003] Aerial surveying integrates multiple technologies such as high-altitude photography, remote control, and telemetry, and can be widely used in national ecological and environmental protection, mineral resource exploration, marine environment monitoring, urban management, advertising photography and other fields.

[0004] During the aerial survey process, the wind at high altitude will interfere with the drone and the equipment it carries. The wind will cause the drone to shake and sway, affecting the equipment's shooting or scanning, and easily causing pixel offsets. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a scanning device for preventing pixel offset for an aerial survey UAV, so as to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A scanning device for preventing pixel offset for an aerial survey drone, comprising a drone body, a camera and a scanning module. The drone body brings the camera to a high altitude for shooting. The camera and scanning module are arranged at the bottom of the drone body. The scanning module is used to scan and analyze the image. Horizontal balance plates are provided on both sides of the drone body. A fixed plate is provided at the bottom of the drone body and is movably connected to the fixed plate through an electric rotating shaft. A longitudinal balance plate is provided at the bottom of the fixed plate, which can control the rotation of the fixed plate and adjust the angle of the longitudinal balance plate. The longitudinal balance plate is arranged at the rear side of the camera. The horizontal balance plate has the same structure as the longitudinal balance plate. The horizontal balance plate is horizontal with the drone body, and the longitudinal balance plate is perpendicular to the drone body.

[0007] Furthermore, the horizontal balance plate includes a storage cylinder, a central tube is provided inside the storage cylinder, one end of the central tube is movably connected to the front wall inside the storage cylinder through a bearing, a micro motor is fixedly provided on the front side of the storage cylinder, one end of the central tube extends to the front side of the storage cylinder and is fixedly connected to the output shaft of the micro motor, and the central tube is driven to rotate by the micro motor, a connecting groove is provided at the outer end of the storage cylinder, a canvas strip is fixed at the outer end of the central tube, the canvas strip is wrapped around the outer end of the central tube, one end of the canvas strip extends to the outside of the storage cylinder through the connecting groove and is fixed with a fixing rod.

[0008] Furthermore, two strip air bags are fixedly provided at the outer end of the fixing rod, and the two strip air bags are respectively fixedly provided at the front and rear ends of the canvas strip, one end of the strip air bag extends to the interior of the storage tube through the bracket and is connected to the central tube, and the canvas strip is supported by the strip air bag, and a sleeve is fixedly provided on the rear side of the storage tube, and the other end of the central tube extends to the interior of the sleeve and is movably connected to the inner wall of the sleeve through a sealing bearing, and a threaded outer tube is fixedly provided at the outer end of the sleeve, and a high-pressure gas cylinder is provided at the bottom of the sleeve, which stores high-pressure air, and a threaded inner tube is fixedly provided at the top of the high-pressure gas cylinder, and one end of the threaded inner tube extends to the interior of the threaded outer tube and is connected to the inner wall of the threaded outer tube by a thread, and a solenoid valve is fixedly provided on the threaded inner tube.

[0009] Furthermore, a connecting plate is fixed to the outer end of the storage tube, and two splints are provided on the outer end of the connecting plate and connected to the splint by bolts to facilitate installation and disassembly. The splints of the two horizontal balance plates are respectively fixed on the corresponding sides of the drone body, and the splint of the longitudinal balance plate is fixed at the bottom end of the fixed plate.

[0010] Furthermore, an installation box is fixedly provided at the bottom end of the drone body, a box cover is fixedly provided at the bottom end of the installation box and is connected to the box cover by bolts, a circuit board is provided inside the installation box, an antenna and a memory stick are fixedly provided at the top end of the circuit board, and data obtained during the aerial survey can be stored in the memory stick. The antenna is used for remote wireless control of the entire device and electrical components on the device, the scanning module is fixedly provided at the top end of the circuit board, a bracket is provided at the bottom end of the drone body and is movably connected to the bracket through an electric rotating shaft, the camera is provided inside the bracket, and both sides of the camera are respectively connected to the inner walls on both sides of the bracket through an electric rotating shaft, and a cotton wipe is fixedly provided at the top end of the inside of the bracket, and the cotton wipe can be used to wipe off dirt on the camera lens.

[0011] Furthermore, a catheter is fixedly provided at one end of the sleeve, an electromagnetic valve is fixedly provided on the catheter, a rubber bag is fixedly provided at one end of the catheter, two hollow bottom rods are provided at the bottom of the drone body, an exhaust pipe is fixedly provided on the inner rear wall of one of the hollow bottom rods, and a one-way valve is fixedly provided on the exhaust pipe.

[0012] Furthermore, two support frames are fixedly provided at the outer end of the hollow bottom rod, and one end of the support frame is connected to the main body of the drone. A connecting hole is opened on the front side of one of the hollow bottom rods, and water can enter the hollow bottom rod through the connecting hole. A pressure block is provided inside the hollow bottom rod, and a sealing gasket is fixed on the rear side of the pressure block. The outer ends of the pressure block and the sealing gasket are in contact with the inner wall of the hollow bottom rod, and the sealing gasket improves the sealing of the pressure block. A fixed net is provided inside the hollow bottom rod, and a switch is fixed on the front side of the fixed net. The switch is in contact with the sealing gasket, and the switch is electrically connected to the solenoid valve on the catheter, thereby controlling the one-way valve on the catheter.

[0013] Technical effects and advantages of the present invention:

[0014] 1. The present invention installs a transverse balance board and a longitudinal balance board on the drone body. When wind blows, the angle of the longitudinal balance board is adjusted according to the wind direction, so that the force-bearing area of the transverse balance board and the longitudinal balance board in the wind is reduced. The wind force can also be used to hinder the swing of the transverse balance board and the longitudinal balance board, indirectly making the drone body more stable.

[0015] 2. The present invention installs the camera inside the bracket so that the camera can be rotated longitudinally relative to the bracket. While adjusting the shooting angle, the camera lens can be rotated to the cotton wipe and rubbed with the cotton wipe to wipe off the obstruction on the lens to avoid affecting the shooting.

[0016] 3. The present invention opens a connecting hole on the hollow bottom rod. Once the equipment fails and falls into the water, water will flow into the hollow bottom rod through the connecting hole. The water pressure pushes the pressure block and triggers the switch. The solenoid valve on the conduit opens, and high-pressure air enters the rubber bag, causing the rubber bag to expand. The expanded rubber bag generates buoyancy, causing the gradually sinking equipment to slowly float to the surface so that search and rescue personnel can find it in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention;

[0018] Figure 2 A perspective view of the present invention;

[0019] Figure 3 A perspective view of the present invention;

[0020] Figure 4 A perspective view of a horizontal balance board according to the present invention;

[0021] Figure 5 A stereoscopic view of the camera of the present invention;

[0022] Figure 6 It is a three-dimensional half-section view of the storage tube of the present invention;

[0023] Figure 7 A three-dimensional diagram of a circuit board according to the present invention;

[0024] Figure 8 It is a three-dimensional half-section view of the hollow bottom rod of the present invention.

[0025] The accompanying drawings are marked as follows: 1. UAV body; 2. Support frame; 3. Camera; 4. Hollow bottom rod; 5. Connecting plate; 6. Clamp; 7. Horizontal balance plate; 8. Storage tube; 9. Micro motor; 10. Longitudinal balance plate; 11. Rubber bag; 12. Fixing plate; 13. Installation box; 14. Sleeve; 15. Strip air bag; 16. Canvas strip; 17. Fixing rod; 18. Cotton wipe; 19. Bracket; 20. Exhaust pipe; 21. Fixing net; 22. Switch; 23. Pressing block; 24. Connecting hole; 25. Conduit; 26. Threaded outer tube; 27. Threaded inner tube; 28. High-pressure gas cylinder; 29. Connecting groove; 30. Center tube; 31. Circuit board; 32. Scanning module; 33. Antenna; 34. Memory stick. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0027] Refer to the instruction manual Figure 1-7In this embodiment, a scanning device for preventing pixel offset for an aerial survey drone includes a drone body 1, a camera 3, and a scanning module 32. The drone body 1 brings the camera 3 to a high altitude for shooting. The camera 3 and the scanning module 32 are arranged at the bottom of the drone body 1. The scanning module 32 is used to scan and analyze the image. Both sides of the drone body 1 are provided with a transverse balance plate 7. The bottom end of the drone body 1 is provided with a fixed plate 12 and is movably connected to the fixed plate 12 via an electric rotating shaft. The bottom end of the fixed plate 12 is provided with a longitudinal balance plate 10, which can control the rotation of the fixed plate 12 and adjust the angle of the longitudinal balance plate 10. The longitudinal balance plate 10 is arranged on the rear side of the camera 3. The transverse balance plate 7 has the same structure as the longitudinal balance plate 10. The transverse balance board 7 is horizontal with the drone body 1, and the longitudinal balance board 10 is perpendicular to the drone body 1. The transverse balance board 7 includes a storage tube 8, and a central tube 30 is provided inside the storage tube 8. One end of the central tube 30 is movably connected to the front wall of the storage tube 8 through a bearing. A micro motor 9 is fixed on the front side of the storage tube 8. One end of the central tube 30 extends to the front side of the storage tube 8 and is fixedly connected to the output shaft of the micro motor 9. The micro motor 9 is used to drive the central tube 30 to rotate. A connecting groove 29 is provided at the outer end of the storage tube 8. A canvas strip 16 is fixed to the outer end of the central tube 30. The canvas strip 16 is wrapped around the outer end of the central tube 30. One end of the canvas strip 16 extends to the outside of the storage tube 8 through the connecting groove 29 and is fixed with a fixing rod 17.

[0028] Two strip air bags 15 are fixedly provided at the outer end of the fixing rod 17, and the two strip air bags 15 are respectively fixed at the front and rear ends of the canvas strip 16. One end of the strip air bag 15 extends to the interior of the storage tube 8 through the bracket 19 and is connected to the central tube 30. The canvas strip 16 is supported by the strip air bag 15. A sleeve 14 is fixedly provided on the rear side of the storage tube 8. The other end of the central tube 30 extends to the interior of the sleeve 14 and is movably connected to the inner wall of the sleeve 14 through a sealed bearing. A threaded outer tube 26 is fixedly provided at the outer end of the sleeve 14, and a high-pressure gas cylinder 28 is provided at the bottom of the sleeve 14. High-pressure air is stored in the high-pressure gas cylinder 28. A threaded inner tube 27 is fixedly provided at the top of the high-pressure gas cylinder 28. One end of the threaded inner tube 27 extends to the interior of the threaded outer tube 26 and is connected to the inner wall of the threaded outer tube 26 by a thread. A solenoid valve is fixed on the threaded inner tube 27.

[0029] The specific implementation scenario is as follows: the drone body 1 brings the camera 3 to a high altitude, at which time the ground can be photographed or scanned by the camera 3 to conduct aerial survey. During this process, if the wind in the air is too strong and affects the equipment, the micro motor 9 can be turned on, and the micro motor 9 is used to drive the central tube 30 to rotate inside the storage tube 8. As the central tube 30 rotates, the canvas strip 16 originally wrapped around the outer end of the central tube 30 is loosened. Under the gravity of the fixed rod 17 at one end of the canvas strip 16, the canvas strip 16 is pulled out from the connecting groove 29, and then the solenoid valve on the threaded inner tube 27 is opened, and the high-pressure air stored in the high-pressure gas cylinder 28 will pass through the threaded inner tube 27 and the threaded outer tube 2 6 enters the sleeve 14 and then enters the strip airbag 15 along the central tube 30. The high-pressure air enters the strip airbag 15, supporting the strip airbag 15. The originally soft strip airbag 15 becomes hard and not easy to bend. The unfolded strip airbag 15 and the fixing rod 17 form a frame, so that the canvas strip 16 is inside the frame. Under the support of the frame, the canvas strip 16 also unfolds and forms a transverse balance board 7 and a longitudinal balance board 10. The two transverse balance boards 7 are located on both sides of the drone body 1 and are horizontal to the drone body 1. Therefore, horizontal wind will not affect the transverse balance boards 7. The longitudinal balance board 10 is located at the bottom of the drone body 1 and is perpendicular to the drone body 1.

[0030] When the drone body 1 encounters wind in mid-air, the adjustment fixing plate 12 rotates, driving the longitudinal balance plate 10 to rotate so that the side of the longitudinal balance plate 10 faces the direction of the wind. The thin sides of the longitudinal balance plate 10 reduce the area affected by the wind, which greatly reduces the area of force applied to the device in the wind. Furthermore, if the wind causes the drone body 1 to sway, the contact area between the transverse balance plate 7 and the longitudinal balance plate 10 and the wind increases. Therefore, the wind will hinder the swaying of the transverse balance plate 7 and the longitudinal balance plate 10, and thus hinder the swaying of the drone body 1, thereby improving the stability of the drone body 1 and preventing the camera 3 from being affected by the wind and causing pixel offset. Therefore, by installing the transverse balance plate 7 and the longitudinal balance plate 10 on the drone body 1, the angle of the longitudinal balance plate 10 can be adjusted according to the wind direction when wind blows, reducing the area of force applied to the transverse balance plate 7 and the longitudinal balance plate 10 in the wind. The wind can also hinder the swaying of the transverse balance plate 7 and the longitudinal balance plate 10, indirectly making the drone body 1 more stable.

[0031] Refer to the instruction manual Figure 1-4This embodiment is a scanning device for preventing pixel offset for an aerial survey drone. A connecting plate 5 is fixed to the outer end of the storage tube 8. Two clamping plates 6 are provided at the outer end of the connecting plate 5 and are connected to the clamping plates 6 by bolts for easy installation and disassembly. The clamping plates 6 of the two horizontal balance plates 7 are respectively fixed to the corresponding sides of the drone body 1, and the clamping plates 6 of the longitudinal balance plate 10 are fixed to the bottom end of the fixed plate 12.

[0032] The specific implementation scenario is as follows: a connecting plate 5 is fixed to the outer end of the storage tube 8. When the transverse balance plate 7 and the longitudinal balance plate 10 are installed on the drone body 1, the transverse balance plate 7 and the longitudinal balance plate 10 are first placed in their respective positions, and then the connecting plate 5 at the outer end of the storage tube 8 is inserted into the splint 6 at the corresponding position, and then the connecting plate 5 and the splint 6 are connected by bolts. In this way, the storage tube 8 can be connected to the drone body 1, and then the transverse balance plate 7 and the longitudinal balance plate 10 are fixed to the drone body 1. In this way, installation and disassembly are more convenient.

[0033] Refer to the instruction manual Figure 1-7 , this embodiment is a scanning device for preventing pixel offset for an aerial survey drone, the bottom end of the drone body 1 is fixedly provided with a mounting box 13, the bottom end of the mounting box 13 is fixedly provided with a box cover and connected to the box cover by bolts, a circuit board 31 is provided inside the mounting box 13, the top end of the circuit board 31 is fixedly provided with an antenna 33 and a memory stick 34, the data obtained during the aerial survey process can be stored in the memory stick 34, the antenna 33 is used to remotely wirelessly control the entire device and the electrical components on the device, the scanning module 32 is fixedly provided on the top end of the circuit board 31, the bottom end of the drone body 1 is provided with a bracket 19 and is movably connected to the bracket 19 through an electric rotating shaft, the camera 3 is provided inside the bracket 19, and the two sides of the camera 3 are respectively connected to the inner walls of the bracket 19 on both sides through an electric rotating shaft, and a cotton wipe 18 is fixedly provided on the top end of the bracket 19, and the cotton wipe 18 can be used to wipe off dirt on the lens of the camera 3.

[0034] The specific implementation scenario is as follows: a circuit board 31 is provided inside the installation box 13, and a scanning module 32, an antenna 33 and a memory stick 34 are fixed on the circuit board 31. The image captured by the camera 3 can be transmitted to the scanning module 32, and the scanning module 32 is used to scan and analyze the image, and the data obtained during the aerial survey can be stored in the memory stick 34. The antenna 33 is used to remotely and wirelessly control the entire device and the electrical components on the device. The camera 3 is arranged inside the bracket 19 and can be rotated longitudinally relative to the bracket 19. The bracket 19 can also be rotated horizontally at the bottom of the drone body 1, so that the shooting angle of the camera 3 can be adjusted. At the same time, when the camera 3 rotates inside the bracket 19, the lens of the camera 3 can be rotated to the cotton wipe 18 and rubbed with the cotton wipe 18 to wipe off the obstruction on its lens to avoid affecting the shooting.

[0035] Refer to the instruction manual Figure 1-8 , a scanning device for preventing pixel offset for an aerial survey drone of this embodiment, one end of the sleeve 14 is fixed with a conduit 25, on which a solenoid valve is fixed, and one end of the conduit 25 is fixed with a rubber bag 11, the bottom of the drone body 1 is provided with two hollow bottom rods 4, one of which is fixed with an exhaust pipe 20 on the rear wall inside the hollow bottom rod 4, and a one-way valve is fixed on the exhaust pipe 20, and two support frames 2 are fixed at the outer end of the hollow bottom rod 4, one end of the support frame 2 is connected to the drone body 1, and one of the hollow bottom rods 4 is fixed with a one-way valve. A connecting hole 24 is provided on the front side, through which water can enter the hollow bottom rod 4. A pressure block 23 is provided inside the hollow bottom rod 4, and a sealing gasket is fixed on the rear side of the pressure block 23. The outer ends of the pressure block 23 and the sealing gasket are in contact with the inner wall of the hollow bottom rod 4. The sealing gasket improves the sealing performance of the pressure block 23. A fixed net 21 is provided inside the hollow bottom rod 4, and a switch 22 is fixed on the front side of the fixed net 21. The switch 22 is in contact with the sealing gasket. The switch 22 is electrically connected to the solenoid valve on the conduit 25, thereby controlling the one-way valve on the conduit 25.

[0036] The specific implementation scenario is: if the device falls into the water, the hollow bottom rod 4 will fall into the water with it, and the device will sink in the water. The connecting hole 24 at one end of the hollow bottom rod 4 is connected to the interior of the hollow bottom rod 4. When the hollow bottom rod 4 falls into the water, water will flow into the interior of the hollow bottom rod 4 through the connecting hole 24, and the water pressure pushes the pressure block 23, and then squeezes the switch 22 through the pressure block 23 and triggers the switch 22. After the switch 22 is turned on, the solenoid valve on the conduit 25 is opened, and high-pressure air will enter the rubber bag 11 through the conduit 25, causing the rubber bag 11 to expand. The expanded rubber bag 11 generates buoyancy, causing the gradually sinking equipment to slowly float to the surface so that search and rescue personnel can find it in time.

[0037] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A scanning device for preventing pixel point offset for an aerial survey drone, comprising a drone body (1), a camera (3) and a scanning module (32), wherein the camera (3) and the scanning module (32) are arranged at the bottom of the drone body (1), and characterized in that: Both sides of the drone body (1) are provided with a transverse balance plate (7), the bottom end of the drone body (1) is provided with a fixed plate (12) and is movably connected to the fixed plate (12) through an electric shaft, the bottom end of the fixed plate (12) is provided with a longitudinal balance plate (10), the longitudinal balance plate (10) is provided on the rear side of the camera (3), the transverse balance plate (7) and the longitudinal balance plate (10) have the same structure, the transverse balance plate (7) is horizontal with the drone body (1), and the longitudinal balance plate (10) is vertical with the drone body (1). The horizontal balance plate (7) includes a storage tube (8), a central tube (30) is provided inside the storage tube (8), one end of the central tube (30) is movably connected to the front wall of the storage tube (8) through a bearing, a micro motor (9) is fixed on the front side of the storage tube (8), one end of the central tube (30) extends to the front side of the storage tube (8) and is fixedly connected to the output shaft of the micro motor (9), a connecting groove (29) is provided at the outer end of the storage tube (8), a canvas strip (16) is fixed on the outer end of the central tube (30), and the canvas The strip (16) is wound around the outer end of the central tube (30), and one end of the canvas strip (16) extends to the outside of the storage tube (8) through the connecting groove (29) and is fixed with a fixing rod (17); the outer end of the fixing rod (17) is fixed with two strip air bags (15), and the two strip air bags (15) are respectively fixed at the front and rear ends of the canvas strip (16), and one end of the strip air bag (15) extends to the inside of the storage tube (8) through the bracket (19) and is connected to the central tube (30), and the rear side of the storage tube (8) is fixed with a sleeve ( 14), the other end of the central tube (30) extends into the interior of the sleeve (14) and is movably connected to the inner wall of the sleeve (14) through a sealing bearing, the outer end of the sleeve (14) is fixedly provided with a threaded outer tube (26), the bottom of the sleeve (14) is provided with a high-pressure gas cylinder (28), the top of the high-pressure gas cylinder (28) is fixedly provided with a threaded inner tube (27), one end of the threaded inner tube (27) extends into the interior of the threaded outer tube (26) and is connected to the inner wall of the threaded outer tube (26) through a thread, and a solenoid valve is fixedly provided on the threaded inner tube (27).

2. The scanning device for preventing pixel offset for an aerial survey UAV according to claim 1, characterized in that: A connecting plate (5) is fixedly provided at the outer end of the storage tube (8), and two clamping plates (6) are provided at the outer end of the connecting plate (5) and connected to the clamping plates (6) by bolts. The clamping plates (6) of the two transverse balance plates (7) are respectively fixed on the corresponding side of the drone body (1), and the clamping plate (6) of the longitudinal balance plate (10) is fixed on the bottom end of the fixing plate (12).

3. The scanning device for preventing pixel offset for an aerial survey UAV according to claim 1, characterized in that: The bottom end of the drone body (1) is fixedly provided with an installation box (13), the bottom end of the installation box (13) is fixedly provided with a box cover and connected to the box cover by bolts, the inside of the installation box (13) is provided with a circuit board (31), the top end of the circuit board (31) is fixedly provided with an antenna (33) and a memory bar (34), the scanning module (32) is fixedly provided on the top end of the circuit board (31), the bottom end of the drone body (1) is provided with a bracket (19) and is movably connected to the bracket (19) through an electric rotating shaft, the camera (3) is provided inside the bracket (19), the two sides of the camera (3) are respectively connected to the inner walls of the two sides of the bracket (19) through an electric rotating shaft, and the top end of the inside of the bracket (19) is fixedly provided with a cotton wiper (18).

4. The scanning device for preventing pixel offset for an aerial survey UAV according to claim 1, characterized in that: A conduit (25) is fixedly provided at one end of the sleeve (14), a solenoid valve is fixedly provided on the conduit (25), a rubber bag (11) is fixedly provided at one end of the conduit (25), and two hollow bottom rods (4) are provided at the bottom of the drone body (1), an exhaust pipe (20) is fixedly provided on the inner rear wall of one of the hollow bottom rods (4), and a one-way valve is fixedly provided on the exhaust pipe (20).

5. The scanning device for preventing pixel offset for an aerial survey UAV according to claim 4, characterized in that: Two support frames (2) are fixedly provided at the outer end of the hollow bottom rod (4), one end of the support frame (2) is connected to the drone body (1), a connecting hole (24) is opened on the front side of one of the hollow bottom rods (4), a pressure block (23) is provided inside the hollow bottom rod (4), a sealing gasket is fixed on the rear side of the pressure block (23), the outer ends of the pressure block (23) and the sealing gasket are in contact with the inner wall of the hollow bottom rod (4), a fixing net (21) is provided inside the hollow bottom rod (4), a switch (22) is fixed on the front side of the fixing net (21), the switch (22) is in contact with the sealing gasket, and the switch (22) is electrically connected to the solenoid valve on the conduit (25).

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