Vector geographic information acquisition device based on remote sensing image and use method

Abstract

The invention provides a vector geographic information acquisition device based on a remote sensing image and a use method. The collecting device comprises an unmanned aerial vehicle main body and a lifting mechanism, a transparent protection frame is mounted at the bottom of the unmanned aerial vehicle main body through bolts, a mounting frame is rotatably mounted at the bottom of the unmanned aerial vehicle main body, a collecting device body is movably mounted at the bottom of the mounting frame, and a first adjusting assembly is mounted between the mounting frame and the unmanned aerial vehicle main body; the first adjusting assembly comprises a gear ring, a second driving motor and a gear, and a second adjusting assembly is arranged between the mounting frame and the collecting device body; the second adjusting assembly further comprises a third driving motor, a worm and a fan-shaped worm wheel. According to the invention, the horizontal and pitching direction adjustment of the acquisition device is realized by using the adjusting assembly, the problems that the acquisition range of the existing device is limited and dynamic geographic information is difficult to track and monitor in real time are solved, multi-region and multi-angle geographic information can be flexibly acquired, and the acquisition comprehensiveness and accuracy are improved.

Description

Technical Field

[0001] The present invention relates to the field of geographic information acquisition technology, and in particular to a vector geographic information acquisition device based on remote sensing images and a use method thereof. Background Art

[0002] With the rapid development of society, the application of geographic information technology in many fields has become more and more in-depth. Vector geographic information, as an important form of geographic information, can accurately describe the location, shape, attributes and other information of geographic space elements, and plays a key role in urban planning, resource exploration, environmental monitoring and other aspects. In the process of vector geographic information collection, remote sensing images have become one of the important means of obtaining data. Through the analysis and processing of remote sensing images, various types of surface information can be obtained quickly and over a large area, providing a rich data source for the collection and updating of vector geographic information.

[0003] The existing vector geographic information acquisition devices are mainly fixed, such as China's invention patent CN114738608A, which discloses a vector geographic information acquisition method and device based on remote sensing images, which mainly includes a base, a triangular bracket and a collection device body, wherein the base is fixedly installed on the top of the triangular bracket, and a rotating seat is rotatably installed on the top of the base, a connecting plate is fixedly connected to the top of the rotating seat, and a level bubble is arranged on the top of the connecting plate, and a mounting seat is fixedly connected to the bottom of the collection device body, and a connecting mechanism is arranged between the mounting seat and the connecting plate. The device can quickly realize the disassembly and assembly operation of the collection device body and the base, saving the time of setting up and disassembling the collection device body, and helping to improve the efficiency of geographic information acquisition.

[0004] However, in actual applications, the above-mentioned fixed collection device needs to be placed at a designated location for collection, which limits the collection range. For some areas with complex terrain and difficult to reach, such as deep mountains, canyons, swamps, etc., it is impossible to effectively collect geographic information. Moreover, fixed-position collection makes it difficult to track and monitor dynamically changing geographic information in real time, such as the rapid development of urban construction, changes in terrain and landforms caused by natural disasters, etc., which may miss important information update opportunities and affect the timeliness and integrity of geographic information.

[0005] Although in order to solve the problems existing in the above-mentioned fixed collection device, in the prior art, a method of carrying a collection device by a drone is designed for aerial collection. However, most of the existing collection devices carried by drones are fixed at the bottom of the drone. Even if the angle can be adjusted, it can only be adjusted in a certain direction, and the adjustment method will be limited, unable to meet the collection requirements. In addition, the existing collection devices carried by drones are basically exposed to the outside and are easily damaged. For example, if the drone fails and falls or is hit, it may damage the collection device, resulting in the loss of the collected data. Moreover, if it encounters hot weather, the long-term operation of the drone and the collection device will cause heat generation, and the collection device is also prone to failure when working at high temperature for a long time. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a vector geographic information collection device and a usage method based on remote sensing images. This device can solve the problems that the existing fixed geographic information collection device has limited collection range and is difficult to track and monitor dynamic geographic information in real time, and can also solve the problems that the existing collection device carried by a drone is prone to damage and failure when encountering collisions, accidents or long-term exposure to high temperature environments.

[0007] To achieve the above objectives, the present invention provides a vector geographic information collection device based on remote sensing images, including a drone main body and a lifting mechanism. A transparent protection frame is bolted to the bottom of the drone main body. An installation frame is rotatably installed at the bottom of the drone main body. A collection device body is movably installed at the bottom of the installation frame. The installation frame and the collection device body are located inside the protection frame, and ventilation holes are provided on the protection frame.

[0008] A first adjustment component is installed between the installation frame and the drone main body. The first adjustment component includes a toothed ring, a second driving motor and a gear. The toothed ring is fixedly connected to the outer wall of the top of the installation frame and is parallel to the bottom surface of the drone main body. The second driving motor is fixedly installed inside the drone main body. The output end of the second driving motor is fixedly installed with a gear. The toothed ring and the gear are meshed with each other, and under the control of the second driving motor, the gear and the toothed ring rotate, thereby controlling the 360° horizontal rotation of the installation frame.

[0009] A second adjustment component is provided between the mounting frame and the main body of the acquisition device; the second adjustment component further includes a third driving motor, a worm, and a sector worm gear. The third driving motor is fixedly installed inside the mounting frame. The worm is rotatably installed inside the mounting frame and is arranged in parallel with the toothed ring. One end of the worm is connected to the output end of the third driving motor. The sector worm gear is rotatably installed inside the mounting frame and meshes with the worm. The bottom of the sector gear is connected to the main body of the acquisition device through a connecting block. Under the control of the third driving motor, the sector gear drives the main body of the acquisition device to rotate back and forth, realizing the adjustment of looking up or looking down of the main body of the acquisition device.

[0010] A preferred technical solution of the present invention: The lifting mechanism of the UAV main body includes four connecting rods distributed on the outer wall of the UAV main body. A first driving motor is fixedly installed at one end of each connecting rod away from the UAV main body. The output end of the first driving motor is fixedly installed with a propeller blade.

[0011] A preferred technical solution of the present invention: Support frames are symmetrically provided on both sides of the transparent protection frame, and the height of the support frame is greater than that of the transparent protection frame. A buffer support plate is provided at the bottom of the support frame.

[0012] A preferred technical solution of the present invention: The top of the mounting frame is fixedly connected with an annular movable block. An annular movable groove is opened at the bottom of the UAV main body. The annular movable block is movably installed inside the annular movable groove and can rotate along the annular movable groove.

[0013] A preferred technical solution of the present invention: The bottom of the connecting block is fixedly connected with a connecting plate. The top of the acquisition device main body is bolted to the bottom of the connecting plate.

[0014] A preferred technical solution of the present invention: The acquisition device further includes a wind collection mechanism. The wind collection mechanism includes a wind collection cover arranged below each group of propeller blades. Two wind collection covers on the same side are communicated through a first air duct. Each first air duct on each side is communicated with a ventilation hole on the protection frame through a second air duct. The first air duct is a rigid support pipe, and the first air ducts on both sides are connected to the UAV main body through a support rod.

[0015] A preferred technical solution of the present invention: The protection frame is composed of a square frame and toughened glass fixed on each side of the square frame. There are two ventilation holes, which are symmetrically opened on the toughened glass surfaces on both sides of the protection frame; the second air duct is a rigid support pipe, and one end of each second air duct away from the first air duct penetrates through the corresponding ventilation hole and extends into the protection frame.

[0016] A preferred technical solution of the present invention: The wind collection cover is located on one side of the bottom of the propeller blade. A ventilation groove is opened inside the wind collection cover. An exhaust groove is opened on the toughened glass at the bottom of the protection frame.

[0017] The present invention also provides a method for using a vector geographic information acquisition device based on remote sensing images, which specifically includes the following steps:

[0018] S1. Drive the main body of the drone up through the lifting mechanism, so that the main body of the collection device is lifted vertically to the target height;

[0019] S2, adjusting the collection device body in the horizontal direction, specifically, starting the second drive motor to drive the gear to rotate, the drive gear drives the gear ring to rotate, the gear ring drives the mounting frame and the collection device body to rotate horizontally, and adjusting the horizontal collection direction;

[0020] S3, adjusting the pitch direction of the acquisition device body, specifically starting the third drive motor to drive the worm to rotate, the worm drives the fan-shaped worm gear and the connecting block to swing, and adjusting the pitch angle of the acquisition device body through the connecting plate to ensure that it is aligned with the target area;

[0021] S4. After the acquisition device body has completed the angle adjustment and maintained stable hovering, the acquisition device body uses the multi-spectral camera, laser radar and GNSS module to synchronously acquire ground multi-band images, three-dimensional point clouds and geographic coordinate data, and combines the IMU attitude parameters with the data processing unit to complete pre-processing such as time synchronization, registration and denoising, generate vector geographic information data and store or wirelessly transmit it to the remote center;

[0022] S5. After the collection is completed, the collection device is controlled to slowly descend, and the buffer support plate buffers the impact of touching the ground.

[0023] A better technical solution of the present invention: the geographic information collection device is also provided with a wind collection mechanism. During the data collection process, the spiral propeller blades are always rotating, and the wind from each spiral propeller blade is collected by the wind collecting hood and enters the interior of the protective frame through the first air duct and the second air duct to cool the collection device body.

[0024] The present invention has the following beneficial effects:

[0025] (1) The present invention uses an unmanned aerial vehicle to realize aerial monitoring and collect geographic information, and during the collection process, the collection device can be rotated 360° in the horizontal direction, and can also be adjusted at various angles of looking up and looking down. That is, the horizontal collection direction of the collection device can be flexibly adjusted to expand the collection range, and remote sensing images can be collected for areas in different directions, thereby improving the comprehensiveness of geographic information collection; the pitch angle of the collection device can also be accurately adjusted according to different collection requirements to ensure that the collection device can accurately aim at the target area, thereby improving the accuracy of collection, and is particularly suitable for collecting geographic information in areas with large terrain undulations.

[0026] (2) In the present invention, the horizontal adjustment is achieved by the second motor driving the gear to rotate, the gear drives the toothed ring to rotate, and the toothed ring drives the mounting frame and the collecting device body to rotate horizontally, enabling stable horizontal adjustment; the upward and downward viewing adjustments are achieved by the third driving motor driving the worm to rotate, the worm drives the sector worm gear and the connecting block to swing, and the pitch angle of the collecting device body is adjusted through the connecting plate, realizing the function of pitch direction adjustment, which can ensure stable adjustment and adjustment accuracy.

[0027] (3) The present invention is provided with a transparent protective cover outside the collecting device, which can not only protect the collecting device but also does not affect the normal data collection of the collecting device. During the data collection process, it is not necessary to open the transparent cover; and a air supply mechanism is provided, which provides wind power through the propeller blades of the drone and introduces the wind into the protective cover, which can dissipate heat inside the protective cover and prevent the collecting device from working under high temperature for a long time; it solves the problem that the existing drone-mounted collecting device is prone to damage and malfunction, resulting in data loss during collision, accidental fall or long-term exposure to high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 is a schematic sectional structure diagram of the present invention;

[0030] Figure 3 is an enlarged structure diagram at A in the figure;

[0031] Figure 4 is a connection schematic diagram of the mounting frame and the collecting device in the present invention;

[0032] Figure 5 is an enlarged sectional structure diagram of the adjustment component in the present invention.

[0033] Wherein, 1, the main body of the drone; 101, the annular movable groove; 2, the connecting rod; 3, the first driving motor; 4, the propeller blade; 5, the protection frame; 501, the ventilation hole; 6, the mounting frame; 601, the annular movable block; 7, the collecting device body; 8, the first adjustment component; 801, the toothed ring; 802, the second driving motor; 803, the gear; 9, the second adjustment component; 901, the third driving motor; 902, the worm; 903, the sector worm gear; 904, the connecting block; 905, the connecting plate; 10, the support frame; 11, the buffer support plate; 12, the air collecting cover; 13, the first air duct; 14, the second air duct; 15, the ventilation groove; 16, the exhaust groove; 17, the support rod. DETAILED DESCRIPTION OF THE INVENTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1: As Figures 1-4 shown, the embodiment of the present invention provides a vector geographic information acquisition device based on remote sensing images, including a UAV body 1 and a lifting mechanism. The lifting mechanism includes four connecting rods 2 distributed on the outer wall of the UAV body 1. At the end of each connecting rod 2 away from the housing 1, a first driving motor 3 is fixedly installed. The first driving motor 3 provides power for the propeller blades 4 and is the power source for realizing the lifting and movement of the device. The output end of the first driving motor 3 is fixedly installed with the propeller blades 4. The propeller blades 4 rotate under the drive of the first driving motor 3 to generate an upward thrust, enabling the entire acquisition device to lift off and remain stable in the air. A transparent protection frame 5 is bolted to the bottom of the UAV body 1. The protection frame 5 is composed of a square frame and tempered glass fixed on each side of the square frame. It can not only protect the internal components but also does not prevent the acquisition device body 7 from obtaining remote sensing images. At the same time, it can also prevent external dust and other impurities from entering and affecting the acquisition effect. The protection frame 5 is installed at the bottom of the UAV body 1 to protect the internal mounting frame 6 and the acquisition device body 7 from being collided and damaged by external objects. The mounting frame 6 is rotatably installed at the bottom of the UAV body 1. The mounting frame 6 is used to install the acquisition device body 7. The acquisition device body 7 is movably installed at the bottom of the mounting frame 6. The acquisition device body 7 performs vector geographic information acquisition to obtain remote sensing image data. The mounting frame 6 and the acquisition device body 7 are located inside the protection frame 5. The protection frame 5 plays a protective role for the mounting frame 6 and the acquisition device body 7 to ensure their safety during the working process.

[0036] In Embodiment 1, as Figures 1 to 4As shown, a first adjustment component 8 is installed between the mounting frame 6 and the UAV body 1. The first adjustment component 8 is used to adjust the horizontal rotation angle of the acquisition device body 7 so that it can collect geographical information in different directions. The first adjustment component 8 includes a toothed ring 801, a second driving motor 802, and a gear 803. The toothed ring 801 is fixedly connected to the outer wall of the top of the mounting frame 6 and is parallel to the bottom surface of the UAV body 1. The second driving motor 802 is fixedly installed inside the UAV body 1. The second driving motor 802 provides power for the gear 803. The output end of the second driving motor 802 is fixedly installed with a gear 803. The toothed ring 801 and the gear 803 are meshed with each other. The toothed ring 801 and the gear 803 cooperate to realize the horizontal rotation of the mounting frame 6 and the acquisition device body 7 under the action of the second driving motor 802. In order to enable the mounting frame 6 to rotate normally, a circular movable block 601 is fixedly connected to the top of the mounting frame 6. An annular movable groove 101 is opened at the bottom of the UAV body 1. The circular movable block 601 is movably installed inside the annular movable groove 101 and can rotate along the annular movable groove 101. The circular movable block 601 cooperates with the annular movable groove 101 at the bottom of the UAV body 1 to ensure the stability of the toothed ring 801 during rotation and at the same time limit its movement track.

[0037] In the first embodiment, as Figures 3 to 5 shown, a second adjustment component 9 is provided between the mounting frame 6 and the acquisition device body 7. The second adjustment component 9 further includes a third driving motor 901, a worm 902, and a sector worm gear 903. The third driving motor 901 is fixedly installed inside the mounting frame 6. The worm 902 is rotatably installed inside the mounting frame 6 and is arranged in parallel with the toothed ring 801. One end of the worm 902 is connected to the output end of the third driving motor 901. The sector worm gear 903 is rotatably installed inside the mounting frame 6 and meshes with the worm 902. The bottom of the sector gear 903 is connected to the acquisition device body 7 through a connecting block 904. Under the control of the third driving motor 901, the sector gear 903 drives the acquisition device body 7 to rotate back and forth to realize the elevation or depression adjustment of the acquisition device body 7. The worm 902 and the sector worm gear 903 are meshed with each other. The worm 902 and the sector worm gear 903 cooperate to convert the rotational motion of the third driving motor 901 into the swinging motion of the sector worm gear 903, thereby realizing the elevation direction adjustment of the acquisition device body 7. A connecting block 904 is fixedly connected to the bottom of the sector worm gear 903. A connecting plate 905 is fixedly connected to the bottom of the connecting block 904. The top of the acquisition device body 7 is bolted to the bottom of the connecting plate 905. The connecting plate 905 is used to connect the connecting block 904 and the acquisition device body 7 to transmit the swinging motion of the sector worm gear 903 to the acquisition device body 7 to realize the elevation angle adjustment of the acquisition device body 7.

[0038] In the first embodiment, asFigure 1 As shown in the figure, support frames 10 are symmetrically arranged on both sides of the transparent protection frame 5, and the height of the support frames 10 is greater than that of the transparent protection frame 5. A buffer support plate 11 is provided at the bottom of the support frames 10. The buffer support plate 11 enhances the stability of the device on the ground, disperses the weight of the device, and prevents the device from tipping over when placed. The buffer support plate 11 can adopt an existing buffer plate or a buffer material layer is provided on the bottom surface of the plate body.

[0039] In the first embodiment, as Figure 1 shown, the acquisition device further includes a wind collection mechanism. The wind collection mechanism includes air collection covers 12 arranged below each group of propeller blades 4. Two air collection covers 12 on the same side are connected through a first air duct 13. Each first air duct 13 on each side is connected to the ventilation holes 501 on the protection frame 5 through a second air duct 14. The first air duct 13 is a rigid support pipe, and the first air ducts 13 on both sides are connected to the UAV body 1 through a support rod 17. The air collection cover 12 has a horn-shaped structure, and the opening faces the direction of the airflow when the propeller blades 4 rotate, so as to efficiently capture the airflow generated by the downward pressure of the propeller blades 4. The first air duct 13 and the second air duct 14 are made of rigid plastic or metal, and the interior is smooth to reduce the airflow resistance. One end of the second air duct 14 far from the first air duct 13 penetrates through the tempered glass 9 and communicates with the inside of the protection frame 5, and a dust-proof filter screen is provided at its port to prevent foreign objects from entering the protection frame 5. The air collection cover 12 is located on one side of the bottom of the propeller blades 4 to ensure that the downward airflow generated by the rotation of the propeller blades 4 can be effectively collected. A ventilation groove 15 is provided inside the air collection cover 12 to guide the airflow to uniformly enter the first air duct 13. An exhaust groove 16 is provided inside the tempered glass 9 at the bottom of the protection frame 5, and the exhaust groove 16 ensures the smooth discharge of the airflow inside the protection frame 5 and avoids the formation of airflow accumulation.

[0040] The second embodiment provides a usage method of the vector geographic information acquisition device described in the first embodiment, which specifically includes the following steps:

[0041] S1. Start the four first drive motors 3, drive the propeller blades 4 to rotate through the first drive motors 3 to generate lift, and make the acquisition device vertically ascend to the target height, so that the acquisition device body 7 can reach a suitable acquisition height to obtain more comprehensive and clear remote sensing images;

[0042] S2. Angle adjustment

[0043] S2.1. Horizontal direction adjustment

[0044] The second driving motor 802 is started to drive the gear 803 to rotate, the driving gear 803 drives the gear ring 801 to rotate, and the gear ring 801 drives the mounting frame 6 and the collection device body 7 to rotate horizontally, and the horizontal collection direction is adjusted. Through the cooperation of the second driving motor 802, the gear 803 and the gear ring 801, the collection device body 7 can be flexibly adjusted in the horizontal direction, the collection range can be expanded, and the collection needs of different areas can be met;

[0045] S2.2, Pitch direction adjustment

[0046] The third driving motor 901 is started to drive the worm 902 to rotate, and the worm 902 drives the fan-shaped worm gear 903 and the connecting block 904 to swing. The pitch angle of the collection device body 7 is adjusted through the connecting plate 905 to ensure that it is aligned with the target area. The third driving motor 901, the worm 902, the fan-shaped worm gear 903 and the connecting block 904 are linked to accurately adjust the pitch angle of the collection device body 7 to improve the accuracy of collection, so that the collection device can adapt to the needs of different terrains and collection targets;

[0047] S3, when the propeller blades 4 rotate and take off, they transport the air downward at high speed. A part of the air enters the air collecting cover 12 due to the negative pressure effect of the airflow, and is evenly gathered to the first air duct 13 through the guiding effect of the ventilation slots 15, and then transported to the inside of the protection frame 5 through the second air duct 14. The airflow flows through the surface of the collection device body 7 in the protection frame 5, and takes away the heat generated by the operation of the equipment through the principle of heat conduction, and finally is discharged from the device through the exhaust slots 16;

[0048] S4. After adjusting the height and angle of the acquisition device, keep it hovering stably. After keeping it hovering stably, the acquisition device body 7 starts the internally integrated multi-spectral camera, laser radar (LiDAR) and global navigation satellite system (GNSS) module. The multi-spectral camera performs multi-band image scanning on the ground target area to obtain the spectral feature data of the object. The laser radar emits laser pulses to generate high-precision three-dimensional point cloud data. The GNSS module synchronously obtains the device's geographic coordinates. At the same time, the inertial measurement unit (IMU) monitors the device's attitude parameters in real time. The acquisition device performs time synchronization, spatial registration and denoising, radiation calibration, geometric correction and other pre-processing on the multi-source data through the built-in data processing unit to generate vector geographic information data with geographic coordinates (such as object boundaries, elevation models, etc.), and finally stores the pre-processed data in a solid-state memory or transmits it to a remote data center in real time through a wireless communication module.

[0049] S5. After the collection is completed, the device is controlled to slowly descend. The buffer support plate 11 can reduce the impact force when the device contacts the ground, protecting the internal components of the device from damage.

[0050] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vector geographic information acquisition device based on remote sensing images, comprising a drone body (1) and a lifting mechanism, characterized in that: A transparent protection frame (5) is bolted to the bottom of the UAV main body (1). An installation frame (6) is rotatably installed at the bottom of the UAV main body (1). A collecting device body (7) is movably installed at the bottom of the installation frame (6). The installation frame (6) and the collecting device body (7) are located inside the protection frame (5), and ventilation holes (501) are provided on the protection frame (5). A first adjustment component (8) is installed between the installation frame (6) and the UAV main body (1). The first adjustment component (8) includes a toothed ring (801), a second driving motor (802) and a gear (803). The toothed ring (801) is fixedly connected to the outer wall of the top of the installation frame (6) and is parallel to the bottom surface of the UAV main body (1). The second driving motor (802) is fixedly installed inside the UAV main body (1). The output end of the second driving motor (802) is fixedly installed with a gear (803). The toothed ring (801) and the gear (803) are meshed with each other, and the gear (803) and the toothed ring (801) are driven to rotate under the control of the second driving motor (802), so as to control the 360° horizontal rotation of the installation frame (6). A second adjustment component (9) is provided between the installation frame (6) and the collecting device body (7). The second adjustment component (9) further includes a third driving motor (901), a worm (902) and a sector worm gear (903). The third driving motor (901) is fixedly installed inside the installation frame (6). The worm (902) is rotatably installed inside the installation frame (6) and is arranged in parallel with the toothed ring (801). One end of the worm (902) is connected to the output end of the third driving motor (901). The sector worm gear (903) is rotatably installed inside the installation frame (6) and is meshed with the worm (902). The bottom of the sector gear (903) is connected to the collecting device body (7) through a connecting block (904). Under the control of the third driving motor (901), the sector gear (903) drives the collecting device body (7) to rotate back and forth, realizing the adjustment of the upward or downward viewing angle of the collecting device body (7).

2. The vector geographic information acquisition device based on remote sensing images according to claim 1, wherein: The lifting mechanism of the UAV main body (1) includes four connecting rods (2) distributed on the outer wall of the UAV main body (1). A first driving motor (3) is fixedly installed at the end of each connecting rod (2) away from the UAV main body (1). The output end of the first driving motor (3) is fixedly installed with a propeller blade (4).

3. The vector geographic information acquisition device based on remote sensing images according to claim 1 or 2, characterized in that: Support frames (10) are symmetrically arranged on both sides of the transparent protection frame (5), and the height of the support frames (10) is greater than that of the transparent protection frame (5). A buffer support plate (11) is provided at the bottom of the support frames (10).

4. A vector geographic information acquisition device based on remote sensing images according to claim 1 or 2, characterized in that: A ring-shaped movable block (601) is fixedly connected to the top of the installation frame (6). A ring-shaped movable groove (101) is provided at the bottom of the UAV main body (1). The ring-shaped movable block (601) is movably installed inside the ring-shaped movable groove (101) and can rotate along the ring-shaped movable groove (101).

5. A vector geographic information acquisition device based on remote sensing images according to claim 1 or 2, characterized in that: A connecting plate (905) is fixedly connected to the bottom of the connecting block (904), and the top of the collecting device body (7) is bolted to the bottom of the connecting plate (905).

6. The vector geographic information acquisition device based on remote sensing images according to claim 2, wherein: The collecting device further includes a wind collecting mechanism. The wind collecting mechanism includes a wind collecting cover (12) arranged below each group of propeller blades (4). Two wind collecting covers (12) on the same side are communicated through a first air duct (13). The first air duct (13) on each side is communicated with the air vent holes (501) on the protection frame (5) through a second air duct (14). The first air duct (13) is a rigid support pipe, and the first air ducts (13) on both sides are connected to the UAV body (1) through a support rod (17).

7. The vector geographic information acquisition device based on remote sensing images according to claim 6, characterized in that: The protection frame (5) is composed of a square frame and toughened glass fixed on each side of the square frame. There are two air vent holes (501), which are symmetrically arranged on the toughened glass surfaces on both sides of the protection frame (5); the second air duct (14) is a rigid support pipe, and one end of each second air duct (14) far from the first air duct (13) penetrates through the corresponding air vent hole (501) and extends into the interior of the protection frame (5).

8. The vector geographic information acquisition device based on remote sensing images according to claim 6, characterized in that: The wind collecting cover (12) is located on one side of the bottom of the propeller blade (4). A ventilation groove (15) is opened inside the wind collecting cover (12), and an exhaust groove (16) is opened in the toughened glass at the bottom of the protection frame (5).

9. A method for using the vector geographic information acquisition device based on remote sensing images according to any one of claims 1 to 8, characterized in that, Specifically, it includes the following steps: S1. Drive the UAV body to rise through the lifting mechanism, so that the collecting device body vertically ascends to the target height; S2. Adjust the collecting device body in the horizontal direction. Specifically, start the second driving motor to drive the gear to rotate. The driving gear drives the toothed ring to rotate. The toothed ring drives the mounting frame and the collecting device body to rotate horizontally to adjust the horizontal collecting direction; S3. Adjust the pitch direction of the collecting device body. Specifically, start the third driving motor to drive the worm to rotate. The worm drives the sector worm gear and the connecting block to swing, and adjusts the pitch angle of the collecting device body through the connecting plate to ensure alignment with the target area; S4. After the angle adjustment of the collecting device body is completed and it remains stable in hovering, the collecting device body synchronously obtains ground multi-band images, three-dimensional point clouds and geographic coordinate data through a multi-spectral camera, a lidar and a GNSS module. Combined with the IMU attitude parameters, preprocessing such as time synchronization, registration and denoising is completed by the data processing unit, and vector geographic information data is generated and stored or wirelessly transmitted to the remote center; S5. After the collection is completed, control the collecting device to slowly land, and the buffer support plate buffers the impact when touching the ground.

10. The usage method of a vector geographic information acquisition device based on remote sensing images according to claim 9, characterized in that: The geographic information collecting device is also provided with a wind collecting mechanism. During the data collection process, the propeller blades are always rotating. The wind of each propeller blade is collected through the wind collecting cover, and enters the interior of the protection frame through the first air duct and the second air duct to cool the collecting device body.

Images