Low-altitude photogrammetry device of unmanned aerial vehicle and use method thereof

Abstract

The low-altitude photogrammetry device comprises a flight assembly and a remote control assembly, the flight assembly comprises an unmanned aerial vehicle body, a surveying and mapping camera is installed at the bottom of the unmanned aerial vehicle body, and an adjusting mechanism is installed between the unmanned aerial vehicle body and the surveying and mapping camera. The adjusting mechanism comprises an angle adjusting assembly and a direction adjusting assembly, the adjusting mechanism is used for adjusting the shooting angle and direction of the surveying and mapping camera, and the angle adjusting assembly comprises a fixing frame, a connecting block, a first motor, a driving gear, a driven gear and a transmission rod. By arranging the angle adjusting assembly and the direction adjusting assembly, the effect of adjusting the shooting angle and orientation of the surveying and mapping camera is achieved, the angle adjusting assembly is used for adjusting the shooting angle of the surveying and mapping camera, and the direction adjusting assembly is used for adjusting the shooting orientation, so that the effect of all-directional shooting measurement can be achieved; and the working efficiency of low-altitude photogrammetry is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicle (UAV) low-altitude photogrammetry equipment, and in particular to a UAV low-altitude photogrammetry device and a use method thereof. Background Art

[0002] Low-altitude photogrammetry is a device used to obtain high-resolution images of the surface or target area, usually used in mapping, surveying and geographic information system (GIS) applications. UAVs are radio-controlled aircraft that are widely used in military, agriculture, surveying, monitoring and entertainment. UAVs equipped with low-altitude photogrammetry can achieve mapping of surface features and are widely used in basic surveying, digital city construction, ecological environment monitoring, land and resources management and other fields.

[0003] According to Chinese patent application No.: 202022509989.2, a low-altitude photogrammetry device for a light and small UAV is disclosed, which includes a UAV body, a mounting plate is fixedly connected to the lower surface of the UAV body, a fixing groove is provided on the lower surface of the mounting plate, a servo motor is fixedly connected inside the fixing groove, a movable plate is fixedly connected to the output shaft of the servo motor, a forward and reverse motor is fixedly connected to the lower surface of the movable plate, a rotating shaft is fixedly connected to the output shaft of the forward and reverse motor, a first gear is fixedly connected to the surface of the rotating shaft, and by setting the servo motor, when the staff adjusts the position of the camera, the staff only needs to start the servo motor through an external control switch, and the movable plate can be smoothly rotated under the cooperation of the slide groove and the ball, thereby achieving the effect of adjusting the position of the camera;

[0004] The existing technology effectively solves the problem that the low-altitude photogrammetry device of the unmanned aerial vehicle is not convenient for adjusting the photographing angle, and is therefore inconvenient for staff to use. It has the advantage of conveniently adjusting the angle of the camera, but this type of low-altitude camera can only adjust the angle. When adjusting the shooting direction, it is necessary to adjust the flying direction of the unmanned aerial vehicle to adjust the shooting direction, which is not convenient for surveying and mapping. Summary of the invention

[0005] The purpose of the present invention is to provide a low-altitude photogrammetry device for an unmanned aerial vehicle and a method for using the same, which has the advantage of being able to perform multi-angle and all-round photography and measurement, and solves the problem that a low-altitude camera can only adjust the angle, and when adjusting the shooting direction, the shooting direction needs to be adjusted by adjusting the flight direction of the unmanned aerial vehicle, which is inconvenient for surveying and mapping.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a low-altitude photogrammetry device for an unmanned aerial vehicle, comprising a flight component and a remote control component, the flight component comprising an unmanned aerial vehicle body, a mapping camera being installed at the bottom of the unmanned aerial vehicle body, an adjustment mechanism being installed between the unmanned aerial vehicle body and the mapping camera, the adjustment mechanism comprising an angle adjustment component and a direction adjustment component, the adjustment mechanism being used to adjust the shooting angle and orientation of the mapping camera, the angle adjustment component comprising a fixing frame, a connecting block, a first motor, a driving gear, a driven gear and a transmission rod, the fixing frame being threadedly connected to the bottom of the unmanned aerial vehicle body by bolts, the connecting block being located at the bottom of the fixing frame, the first motor, the driving gear and the driven gear being all installed in the inner cavity of the fixing frame, one end of the transmission rod being connected to the driven gear The direction adjustment component is located at the bottom of the angle adjustment component. The direction adjustment component includes a mounting box, a second motor, a first bevel gear, a second bevel gear and a connecting rod. The second motor, the first bevel gear and the second bevel gear are all installed in the inner cavity of the mounting box. One end of the connecting rod is fixedly connected to the surveying camera, and the other end of the connecting rod penetrates the inner cavity of the mounting box and is fixedly connected to the second bevel gear. The mounting box is fixedly connected to the connecting block. The remote control component includes a shell, a control component, a display, a power button and a remote control mainboard. The remote control component is used to control the flight component, the surveying camera and the adjustment mechanism.

[0007] Preferably, the first motor is fixedly connected to the inner wall of the fixing frame, the driving gear is meshed with the driven gear, the output shaft of the first motor is drivingly connected to the driving gear, and the other end of the driven gear is movably connected to the inner wall of the fixing frame through a bearing.

[0008] Preferably, the second motor is fixedly connected to the inner wall of the installation box, the first bevel gear is meshed with the second bevel gear, the output shaft of the second motor is drivingly connected to the first bevel gear, and the second bevel gear is movably connected to the inner wall of the installation box via a bearing.

[0009] Preferably, the flight component also includes a drone mainboard, a GPS module and an obstacle avoidance sensor, the GPS module and the drone mainboard are both installed in the inner cavity of the drone body, and the obstacle avoidance sensor is installed on the top of the drone body.

[0010] Preferably, the remote control mainboard is installed in the inner cavity of the shell, the control component, the display and the power button are all installed on the surface of the shell, and the control component includes a flight control rod, a camera control rod and an adjustment control rod.

[0011] Preferably, the output ends of the surveying and mapping camera, GPS module and obstacle avoidance sensor are all connected to the input end of the drone mainboard, the output end of the drone mainboard is respectively connected to the input end of the surveying and mapping camera and the adjustment mechanism, the drone mainboard is connected to the remote control mainboard via a radio wireless connection, the output ends of the control component and the power button are both connected to the input end of the remote control mainboard, and the output end of the remote control mainboard is connected to the input end of the display.

[0012] Preferably, the method of use comprises the following steps:

[0013] A. First, the UAV body is controlled to fly at low altitude through the flight control lever. The UAV body drives the mapping camera to take low-altitude photos and measurements through the adjustment mechanism. The mapping camera can be controlled to take photos or videos through the camera control lever. The mapping camera processes the captured data and sends it to the UAV mainboard. The UAV mainboard sends the captured data to the remote control mainboard through radio signals. The remote control mainboard displays the captured data in real time through the display. The UAV mainboard and the remote control mainboard are wirelessly connected through encrypted radio signals, so that the remote control component can control the UAV body, mapping camera and adjustment mechanism.

[0014] B. When the shooting angle of the surveying and mapping camera needs to be adjusted during the shooting process, the adjustment control lever is pushed, and the adjustment control lever sends an operation signal to the remote control mainboard, and the remote control mainboard sends a signal to the drone mainboard, so that the drone mainboard controls the first motor to start, and the output shaft of the first motor rotates to drive the driving gear to rotate, and the driving gear rotates to drive the driven gear to rotate, and the driven gear rotates to drive the connecting block to flip through the transmission rod, so that the surveying and mapping camera can be driven to flip, so that the shooting angle of the surveying and mapping camera can be adjusted;

[0015] C. When the shooting direction of the surveying and mapping camera needs to be adjusted, the adjustment control lever is rotated, and the adjustment control lever sends an operation signal to the remote control main board, and the remote control main board sends a signal to the UAV main board. The UAV main board controls the second motor to start, and the output shaft of the second motor rotates to drive the first bevel gear to rotate. When the first bevel gear rotates, it drives the second bevel gear to rotate. When the second bevel gear rotates, it drives the surveying and mapping camera to rotate through the connecting rod, so that the shooting direction can be adjusted. In this way, the shooting direction can be adjusted without changing the flight direction.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention achieves the effect of adjusting the shooting angle and orientation of the surveying and mapping camera by arranging an angle adjustment component and a direction adjustment component. The angle adjustment component is used to adjust the shooting angle of the surveying and mapping camera, and the direction adjustment component is used to adjust the shooting orientation, thereby achieving the effect of all-round shooting and measurement, thereby facilitating low-altitude photogrammetry operations and effectively improving the work efficiency of low-altitude photogrammetry.

[0018] 2. The present invention achieves the effect of being able to perform low-altitude photogrammetry by setting up a flight component, a surveying camera and a remote control component. The remote control component controls the flight component to drive the surveying camera to fly at a low altitude. The surveying camera can photograph ground features and transmit the images to the remote control component, thereby realizing low-altitude photogrammetry operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 It is a schematic structural diagram of the flight assembly and the regulating mechanism of the present invention in a separated state;

[0021] Figure 3 It is a schematic diagram of the structure of the angle adjustment assembly of the present invention in a separated state;

[0022] Figure 4 This is a schematic diagram of the connection state structure of the direction adjustment component and the surveying and mapping camera of the present invention;

[0023] Figure 5 It is a schematic diagram of the system flow of the present invention.

[0024] In the figure: 1. flight component; 11. drone body; 12. drone mainboard; 13. GPS module; 14. obstacle avoidance sensor; 2. mapping camera; 3. remote control component; 31. shell; 32. control component; 321. flight control lever; 322. camera control lever; 323. adjustment control lever; 33. display; 34. power button; 35. remote control mainboard; 4. adjustment mechanism; 41. angle adjustment component; 411. fixing bracket; 412. connecting block; 413. first motor; 414. driving gear; 415. driven gear; 416. transmission rod; 42. direction adjustment component; 421. mounting box; 422. second motor; 423. first bevel gear; 424. second bevel gear; 425. connecting rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments 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.

[0026] The flight component 1, the UAV body 11, the UAV mainboard 12, the GPS module 13, the obstacle avoidance sensor 14, the mapping camera 2, the remote control component 3, the shell 31, the control component 32, the flight control lever 321, the camera control lever 322, the adjustment control lever 323, the display 33, the power button 34, the remote control mainboard 35, the adjustment mechanism 4, the angle adjustment component 41, the fixing frame 411, the connecting block 412, the first motor 413, the driving gear 414, the driven gear 415, the transmission rod 416, the direction adjustment component 42, the installation box 421, the second motor 422, the first bevel gear 423, the second bevel gear 424 and the connecting rod 425 of the present invention are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0027] Example 1

[0028] like Figure 1-5As shown in the figure, it is the first embodiment of the present invention, which provides a low-altitude photogrammetry device for an unmanned aerial vehicle, a low-altitude photogrammetry device for an unmanned aerial vehicle, comprising a flight component 1 and a remote control component 3, the flight component 1 comprises an unmanned aerial vehicle body 11, a mapping camera 2 is installed at the bottom of the unmanned aerial vehicle body 11, an adjustment mechanism 4 is installed between the unmanned aerial vehicle body 11 and the mapping camera 2, the adjustment mechanism 4 comprises an angle adjustment component 41 and a direction adjustment component 42, the adjustment mechanism 4 is used to adjust the shooting angle and orientation of the mapping camera 2, the angle adjustment component 41 comprises a fixing frame 411, a connecting block 412, a first motor 413, a driving gear 414, a driven gear 415 and a transmission rod 416, the fixing frame 411 is threadedly connected to the bottom of the unmanned aerial vehicle body 11 by bolts, the connecting block 412 is located at the bottom of the fixing frame 411, the first motor 413, the driving gear 414 and the driven gear 415 are all installed in the inner cavity of the fixing frame 411, one end of the transmission rod 416 is connected to the driven gear 4 15 is fixedly connected, the other end of the transmission rod 416 passes through the outside of the fixing frame 411 and is fixedly connected to the connecting block 412, the other side of the connecting block 412 is movably connected to the inner wall of the fixing frame 411 through a bearing, the direction adjustment component 42 is located at the bottom of the angle adjustment component 41, the direction adjustment component 42 includes a mounting box 421, a second motor 422, a first bevel gear 423, a second bevel gear 424 and a connecting rod 425, the second motor 422, the first bevel gear 423 and the second bevel gear 424 are all installed in the inner cavity of the mounting box 421, one end of the connecting rod 425 is fixedly connected to the mapping camera 2, the other end of the connecting rod 425 passes through the inner cavity of the mounting box 421 and is fixedly connected to the second bevel gear 424, the mounting box 421 is fixedly connected to the connecting block 412, the remote control component 3 includes a shell 31, a control component 32, a display 33, a power button 34 and a remote control mainboard 35, and the remote control component 3 is used to control the flight component 1, the mapping camera 2 and the adjustment mechanism 4.

[0029] like Figure 1-5As shown, the drone body 11 drives the mapping camera 2 to perform low-altitude flight photography. The remote control component 3 is used to control the drone body 11, the mapping camera 2 and the adjustment mechanism 4, and to receive the shooting data of the mapping camera 2. The output shaft of the first motor 413 rotates to drive the driving gear 414 to rotate. When the driving gear 414 rotates, it drives the driven gear 415 to rotate. When the driven gear 415 rotates, it drives the connecting block 412 to rotate through the transmission rod 416, so that the mapping camera 2 can be flipped, and then the shooting angle can be adjusted. The output shaft of the second motor 422 rotates The first bevel gear 423 is driven to rotate, and when the first bevel gear 423 rotates, the second bevel gear 424 is driven to rotate. When the second bevel gear 424 rotates, the surveying and mapping camera 2 is driven to rotate through the connecting rod 425, so that the shooting direction can be adjusted. In this way, the shooting direction can be adjusted without changing the flight direction. The surveying and mapping camera 2 transmits the captured image to the remote control mainboard 35 via radio, and displays it through the display 33, so that it is convenient for the staff to record. A data storage module can also be installed inside the shell 31 to save and record the surveying and mapping data.

[0030] Example 2

[0031] Reference Figure 1-4 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0032] In this embodiment, the first motor 413 is fixedly connected to the inner wall of the fixing frame 411, the driving gear 414 is meshed with the driven gear 415, the output shaft of the first motor 413 is transmission-connected to the driving gear 414, and the other end of the driven gear 415 is movably connected to the inner wall of the fixing frame 411 through a bearing.

[0033] The second motor 422 is fixedly connected to the inner wall of the installation box 421 , the first bevel gear 423 is meshed with the second bevel gear 424 , the output shaft of the second motor 422 is drivingly connected to the first bevel gear 423 , and the second bevel gear 424 is movably connected to the inner wall of the installation box 421 via a bearing.

[0034] like Figure 1-4As shown, the first motor 413 and the second motor 422 are both brushless motors. The output shaft of the first motor 413 rotates to drive the driving gear 414 to rotate. When the driving gear 414 rotates, it drives the driven gear 415 to rotate. When the driven gear 415 rotates, it drives the connecting block 412 to rotate through the transmission rod 416, so that the surveying and mapping camera 2 can be flipped, and then the shooting angle can be adjusted. The output shaft of the second motor 422 rotates to drive the first bevel gear 423 to rotate. When the first bevel gear 423 rotates, it drives the second bevel gear 424 to rotate. When the second bevel gear 424 rotates, it drives the surveying and mapping camera 2 to rotate through the connecting rod 425, so that the shooting direction can be adjusted, so that the shooting direction can be adjusted without changing the flight direction.

[0035] Example 3

[0036] Reference Figure 1 and 5 , which is the third embodiment of the present invention, and this embodiment is based on the previous two embodiments.

[0037] In this embodiment, the flight component 1 also includes a drone mainboard 12, a GPS module 13 and an obstacle avoidance sensor 14. The GPS module 13 and the drone mainboard 12 are both installed in the inner cavity of the drone body 11, and the obstacle avoidance sensor 14 is installed on the top of the drone body 11.

[0038] The remote control mainboard 35 is installed in the inner cavity of the shell 31 , and the control component 32 , the display 33 and the power button 34 are all installed on the surface of the shell 31 . The control component 32 includes a flight control rod 321 , a camera control rod 322 and an adjustment control rod 323 .

[0039] The output ends of the surveying and mapping camera 2, the GPS module 13 and the obstacle avoidance sensor 14 are all connected to the input end of the drone mainboard 12, the output end of the drone mainboard 12 is respectively connected to the input end of the surveying and mapping camera 2 and the adjustment mechanism 4, the drone mainboard 12 is connected to the remote control mainboard 35 via a radio wireless connection, the output ends of the control component 32 and the power button 34 are all connected to the input end of the remote control mainboard 35, and the output end of the remote control mainboard 35 is connected to the input end of the display 33.

[0040] like Figure 1 and 5As shown, the UAV body 11, the surveying camera 2 and the remote control component 3 are all powered by rechargeable batteries. The surface of the shell 31 is also provided with a transmission interface for transmitting the measurement data to the outside. The flight attitude and flight direction of the UAV body 11 are controlled by the flight control rod 321. The adjustment control rod 323 is used to control the angle adjustment component 41 and the direction adjustment component 42, so as to control the shooting direction of the surveying camera 2. The camera control rod 322 is used to control the surveying camera 2 to shoot or record. The surveying camera 2 sends the shot picture to the UAV main board 12 after processing. The UAV main board 12 transmits the shot picture to the remote control main board 35 via radio signals. The radio signal can encrypt the wireless signal using encryption technology to prevent the signal from being interfered. The remote control main board 35 displays the measured data through the display 33. The GPS module 13 can record the flight route of the UAV body 11, so as to facilitate the return of the UAV body 11. The obstacle avoidance sensor 14 adopts a 360° obstacle avoidance radar, so as to identify surrounding obstacles, so as to ensure the safety of flight. The flight blades on the surface of the UAV body 11 are all powered by brushless motors.

[0041] A method for using a low-altitude photogrammetry device of an unmanned aerial vehicle, the method comprising the following steps:

[0042] A. First, the UAV body 11 is controlled to fly at low altitude through the flight control rod 321. The UAV body 11 drives the mapping camera 2 to perform low-altitude photography and measurement through the adjustment mechanism 4. The mapping camera 2 can be controlled to take photos or videos through the camera control rod 322. The mapping camera 2 processes the photographed data and sends it to the UAV mainboard 12. The UAV mainboard 12 sends the photographed data to the remote control mainboard 35 through a radio signal. The remote control mainboard 35 displays the photographed data in real time through the display 33. The UAV mainboard 12 and the remote control mainboard 35 are wirelessly connected through encrypted radio signals, so that the remote control component 3 can control the UAV body 11, the mapping camera 2 and the adjustment mechanism 4.

[0043] B. When the shooting angle of the surveying and mapping camera 2 needs to be adjusted during the shooting process, the adjustment control rod 323 is pushed, and the adjustment control rod 323 sends an operation signal to the remote control mainboard 35, and the remote control mainboard 35 sends a signal to the drone mainboard 12, so that the drone mainboard 12 controls the first motor 413 to start, and the output shaft of the first motor 413 rotates to drive the driving gear 414 to rotate, and the driving gear 414 rotates to drive the driven gear 415 to rotate, and the driven gear 415 rotates to drive the connecting block 412 to flip through the transmission rod 416, so that the surveying and mapping camera 2 can be driven to flip, so that the shooting angle of the surveying and mapping camera 2 can be adjusted;

[0044] C. When the shooting direction of the surveying and mapping camera 2 needs to be adjusted, the adjustment control lever 323 is rotated, and the adjustment control lever 323 sends an operation signal to the remote control mainboard 35, and the remote control mainboard 35 sends a signal to the UAV mainboard 12. The UAV mainboard 12 controls the second motor 422 to start, and the output shaft of the second motor 422 rotates to drive the first bevel gear 423 to rotate. When the first bevel gear 423 rotates, it drives the second bevel gear 424 to rotate. When the second bevel gear 424 rotates, it drives the surveying and mapping camera 2 to rotate through the connecting rod 425, so that the shooting direction can be adjusted, so that the shooting direction can be adjusted without changing the flight direction.

[0045] The standard parts used in this application document can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in the field. This application is mainly used to protect mechanical devices, so this application no longer explains the control method and circuit connection in detail.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-altitude photogrammetry device for an unmanned aerial vehicle, comprising a flight component (1) and a remote control component (3), characterized in that: The flight assembly (1) comprises an unmanned aerial vehicle body (11), a surveying camera (2) is installed at the bottom of the unmanned aerial vehicle body (11), an adjustment mechanism (4) is installed between the unmanned aerial vehicle body (11) and the surveying camera (2), the adjustment mechanism (4) comprises an angle adjustment component (41) and a direction adjustment component (42), the adjustment mechanism (4) is used to adjust the shooting angle and orientation of the surveying camera (2), the angle adjustment component (41) comprises a fixing frame (411), a connecting block (412), a first motor (413), a driving gear ( The fixing frame (411) is threadedly connected to the bottom of the UAV body (11) by bolts, the connecting block (412) is located at the bottom of the fixing frame (411), the first motor (413), the driving gear (414) and the driven gear (415) are all installed in the inner cavity of the fixing frame (411), one end of the driving rod (416) is fixedly connected to the driven gear (415), and the other end of the driving rod (416) passes through the outside of the fixing frame (411) and is connected to the connecting block (412). The connecting block (412) is fixedly connected, and the other side of the connecting block (412) is movably connected to the inner wall of the fixing frame (411) through a bearing. The direction adjustment component (42) is located at the bottom of the angle adjustment component (41). The direction adjustment component (42) includes a mounting box (421), a second motor (422), a first bevel gear (423), a second bevel gear (424) and a connecting rod (425). The second motor (422), the first bevel gear (423) and the second bevel gear (424) are all installed in the inner wall of the mounting box (421). The remote control assembly (3) is provided with a cavity, one end of the connecting rod (425) is fixedly connected to the surveying camera (2), the other end of the connecting rod (425) passes through the inner cavity of the installation box (421) and is fixedly connected to the second bevel gear (424), the installation box (421) is fixedly connected to the connecting block (412), the remote control assembly (3) comprises a housing (31), a control assembly (32), a display (33), a power button (34) and a remote control mainboard (35), and the remote control assembly (3) is used to control the flight assembly (1), the surveying camera (2) and the adjustment mechanism (4).

2. The low-altitude photogrammetry device for an unmanned aerial vehicle according to claim 1, characterized in that: The first motor (413) is fixedly connected to the inner wall of the fixing frame (411), the driving gear (414) is meshed with the driven gear (415), the output shaft of the first motor (413) is transmission-connected to the driving gear (414), and the other end of the driven gear (415) is movably connected to the inner wall of the fixing frame (411) via a bearing.

3. The low-altitude photogrammetry device for an unmanned aerial vehicle according to claim 1, characterized in that: The second motor (422) is fixedly connected to the inner wall of the installation box (421), the first bevel gear (423) is meshed with the second bevel gear (424), the output shaft of the second motor (422) is transmission-connected to the first bevel gear (423), and the second bevel gear (424) is movably connected to the inner wall of the installation box (421) via a bearing.

4. The low-altitude photogrammetry device for an unmanned aerial vehicle according to claim 1, characterized in that: The flight component (1) further comprises a drone mainboard (12), a GPS module (13) and an obstacle avoidance sensor (14); the GPS module (13) and the drone mainboard (12) are both installed in the inner cavity of the drone body (11); and the obstacle avoidance sensor (14) is installed on the top of the drone body (11).

5. The low-altitude photogrammetry device for an unmanned aerial vehicle according to claim 1, characterized in that: The remote control mainboard (35) is installed in the inner cavity of the outer shell (31), the control component (32), the display (33) and the power button (34) are all installed on the surface of the outer shell (31), and the control component (32) includes a flight control rod (321), a camera control rod (322) and an adjustment control rod (323).

6. The low-altitude photogrammetry device for an unmanned aerial vehicle according to claim 5, characterized in that: The output ends of the surveying camera (2), the GPS module (13) and the obstacle avoidance sensor (14) are all connected to the input end of the drone mainboard (12), the output end of the drone mainboard (12) is respectively connected to the input end of the surveying camera (2) and the adjustment mechanism (4), the drone mainboard (12) is connected to the remote control mainboard (35) via a radio wireless connection, the output ends of the control component (32) and the power button (34) are all connected to the input end of the remote control mainboard (35), and the output end of the remote control mainboard (35) is connected to the input end of the display (33).

7. The method for using the low-altitude photogrammetry device of an unmanned aerial vehicle according to any one of claims 1 to 6, characterized in that: The method of use includes the following steps: A. First, the drone body (11) is controlled to fly at low altitude by the flight control rod (321). The drone body (11) drives the mapping camera (2) to perform low altitude photography and measurement through the adjustment mechanism (4). The mapping camera (2) can be controlled to perform photography or video recording by the camera control rod (322). The mapping camera (2) processes the photographed data and sends it to the drone main board (12). The drone main board (12) sends the photographed data to the remote control main board (35) through a radio signal. The remote control main board (35) displays the photographed data in real time through the display (33). The drone main board (12) and the remote control main board (35) are wirelessly connected through encrypted radio signals, so that the remote control component (3) can control the drone body (11), the mapping camera (2) and the adjustment mechanism (4). B. When the shooting angle of the surveying and mapping camera (2) needs to be adjusted during the shooting process, the adjustment control rod (323) is pushed, and the adjustment control rod (323) sends an operation signal to the remote control mainboard (35), and the remote control mainboard (35) sends a signal to the drone mainboard (12), so that the drone mainboard (12) controls the first motor (413) to start, and the output shaft of the first motor (413) rotates to drive the driving gear (414) to rotate, and the driving gear (414) drives the driven gear (415) to rotate when the driving gear (415) rotates. When the driven gear (415) rotates, it drives the connecting block (412) to flip through the transmission rod (416), thereby driving the surveying and mapping camera (2) to flip, so that the shooting angle of the surveying and mapping camera (2) can be adjusted; C. When the shooting direction of the surveying and mapping camera (2) needs to be adjusted, the adjustment control rod (323) is rotated, the adjustment control rod (323) sends an operation signal to the remote control main board (35), the remote control main board (35) sends a signal to the drone main board (12), the drone main board (12) controls the second motor (422) to start, the output shaft of the second motor (422) rotates to drive the first bevel gear (423) to rotate, the first bevel gear (423) drives the second bevel gear (424) to rotate, and the second bevel gear (424) drives the surveying and mapping camera (2) to rotate through the connecting rod (425), so that the shooting direction can be adjusted, so that the shooting direction can be adjusted without changing the flight direction.

Images