A surveying and mapping drone with a lens protection device

Abstract

The present invention relates to the field of drone technology, and specifically to a surveying and mapping drone with a lens protection device, comprising a protective mirror device, a shading device, and a lens connecting mechanism. In the lens connecting mechanism, an elastic rubber ring is compressed and deformed by a threaded connection portion, so that the lens connecting mechanism can be adapted to different models of camera lenses. A counterweight ball is used in the shading device to be connected to the shading aperture. The opening and closing states of the filter lens can be adjusted by adjusting the flight state of the drone. An air duct is provided in the protective mirror device so that air forms a wind curtain on the inner side of the protective lens, effectively preventing the protective lens from fogging, and by silencing, preventing the noise generated by air circulation from affecting the video. The present invention is simple and convenient to use, and has a wide applicability. While protecting the camera lens, it effectively prevents the protective lens from fogging, and can also prevent the camera from being overexposed, so that the drone can still work normally under strong light conditions, bringing convenience to surveying and mapping work.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to a surveying and mapping UAV with a lens protection device. Background Art

[0002] Drone mapping is the use of drones for ground or aerial surveying, photography, and data collection. It utilizes drone platforms equipped with various sensors, such as cameras and lidar, to efficiently and accurately collect data and create maps of target areas. Drone mapping offers advantages such as high efficiency, high precision, flexibility, real-time monitoring, low cost, and high efficiency. It is widely used in land surveying and planning, building infrastructure monitoring, natural resource management, environmental and ecological research, disaster response and rescue, and other fields, providing new solutions for geographic information acquisition and analysis.

[0003] In the process of drone mapping, it is inevitable to use a camera. With the development of drone technology and camera stabilization technology, camera gimbal stabilizers have basically become an indispensable part of drone use. Existing drones are connected to camera stabilization platforms through gimbal connectors to ensure the stability of the camera during flight, thereby obtaining better quality images. For the use of cameras, they are often used in conjunction with camera lenses in the mapping process. For geographic mapping, high-definition lenses are often required to ensure the quality of the captured images.

[0004] During the surveying and mapping process of existing drones, their camera lenses often lack corresponding protective devices. During use, the camera lenses are exposed. During the ascending and descending process of the drone, the airflow and dust generated can easily cause damage to the lenses. Therefore, the camera lenses need to be protected to ensure their service life. During the process, protective lenses can be installed on the camera lenses to protect them. However, during use, the protective lenses are prone to fogging, which affects the shooting effect. At the same time, during the existing drone surveying and mapping operations, when the light is relatively strong, the camera is prone to overexposure, which affects the operation of the drone. Therefore, a lens protection device that can protect the lens of the drone during surveying and mapping operations, effectively prevent the protective lens from fogging, and at the same time reduce the light intensity in strong light weather, which is beneficial to the operation of the drone, is an existing problem that needs to be solved urgently. Summary of the Invention

[0005] The purpose of the present invention is to provide a surveying and mapping UAV with a lens protection device to solve the problem that the lens of the existing surveying and mapping UAV is difficult to protect during use, the protective lens is prone to fogging, and it cannot operate well in a strong light environment, which brings inconvenience to the surveying and mapping work.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a surveying and mapping UAV with a lens protection device, comprising a UAV, a pan-tilt connector arranged at the bottom of the UAV, characterized in that: a connecting column is arranged at the bottom of the UAV, and when surveying and mapping operations are not being performed, the connecting column is connected to the protection device, and when surveying and mapping operations are being performed, the protection device is connected to the camera lens, a protective mirror device is arranged in the protection device, an arc-shaped portion is arranged above the protective mirror device, a through hole A is arranged in the protective mirror device, a protective lens is arranged at the front end of the through hole A, an air inlet pipe is arranged at the lower end of the protective mirror device, the air inlet pipe extends to the inner side surface of the protective lens, and an air outlet pipe is arranged above the inner side surface of the protective lens, a buffer chamber is arranged in the air outlet pipe, a plurality of buffer chambers are arranged, and a baffle is arranged in the buffer chamber.

[0007] Furthermore, the protective device is provided with a lens connecting mechanism, which is connected to the protective mirror device, a threaded connection portion is provided in the lens connecting mechanism, a through lens connecting port is provided in the threaded connection portion, a threaded connection groove is provided at the end of the through hole A of the protective mirror device, the threaded connection groove cooperates with the threaded connection portion, an elastic rubber ring placement portion is provided in the threaded connection groove, an elastic rubber ring is placed in the elastic rubber ring placement portion, and is connected to the camera lens through the lens connecting port, the elastic rubber ring is deformed under the extrusion of the threaded connection portion and compresses and fixes the camera lens.

[0008] Furthermore, the lens connection mechanism is connected to a connection post, and knurling is provided on the surface of the connection post.

[0009] Furthermore, a shading device is provided in the protective device, one side of the shading device is fixedly connected to the protective mirror device, and the other side of the shading device is connected to the lens connecting mechanism. A through hole C is provided in the shading device, and the through hole C is the same size as the through hole A and is aligned with it, and a threaded connection groove is arranged at the through hole C.

[0010] Furthermore, the shading device is provided with an installation chamber, a through hole B of the same size as the through hole C is provided at the center of the installation chamber, a shading aperture is installed in the installation chamber for limited rotation, a plurality of first hinged parts are provided in the shading aperture, the first hinged part is connected to the hinged rod, the hinged rod is connected to the second hinged part, the second hinged part is connected to the neutral density filter lens, a third hinged part is provided on the neutral density filter lens, the third hinged part is connected to the rear side wall of the installation chamber, the rotation of the shading aperture drives the opening and closing of the neutral density filter lens, and when the neutral density filter lens is closed, the through hole B is blocked and filtered.

[0011] Furthermore, a limiting shaft is arranged between the front side wall of the installation chamber and the rear side wall of the installation chamber, and a limiting groove is arranged around the shading aperture, the limiting shaft is located in the limiting groove, and there are multiple limiting shafts and limiting grooves that match one by one, and a "mouth"-shaped connecting frame is provided above the shading aperture, which is connected to the ball-shaped slider above the "mouth"-shaped connecting frame, and a spherical cross-section groove is provided on the upper side wall of the installation chamber, the spherical cross-section groove matches the ball-shaped slider, and a "mouth"-shaped connecting frame is provided to connect with the connecting line, and the other end of the connecting line is connected to the counterweight ball, and the counterweight ball is located in the cavity formed between the shading aperture and the installation chamber.

[0012] Furthermore, a support member is provided below the installation chamber, and the light-shielding aperture is placed on the support member in a rolling manner.

[0013] Furthermore, a mounting groove is provided in the support member, and a roller is installed in the mounting groove via a connecting shaft, and the upper portion of the roller contacts the lower portion of the light-shielding aperture.

[0014] Beneficial effects of the present invention:

[0015] 1. The protective lens can protect the camera lens and form a channel for air inside the protective lens during use, so that the temperature inside and outside the protective lens remains consistent, which can effectively prevent the protective lens from fogging and thus ensure the quality of the camera;

[0016] 2. A buffer chamber is provided in the air outlet pipe of the protective mirror device, which can buffer the air flowing through it and reduce the air flow rate, thereby effectively reducing the noise generated by air circulation, which is beneficial to the later processing of video materials;

[0017] 3. The lens connection mechanism is installed on the drone when not in use, and installed on the lens when in use, which is more convenient to use. At the same time, the lens connection mechanism adopts a compression elastic rubber ring for fixing, which can be adapted to different models of camera lenses during the process, making it more universal to use;

[0018] 4. The shading device can block light under strong light conditions, thereby effectively reducing exposure, allowing the drone to operate normally even in strong light conditions;

[0019] 5. By adjusting the flight state of the drone, the position of the counterweight ball can be adjusted, thereby driving the opening and closing of the neutral density filter lens, avoiding the use of external electric drive and making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention relates to a schematic diagram of a drone (looking up);

[0021] Figure 2 This is a schematic diagram of the structure of the connecting column of the protective device on the UAV of the present invention;

[0022] Figure 3 This is a schematic diagram of the connection between the protective device of the present invention and the camera lens;

[0023] Figure 4 It is a schematic diagram of the structure of each part of the protective device of the present invention;

[0024] Figure 5 1. It is a schematic structural diagram of the protective goggles device of the present invention;

[0025] Figure 6 Schematic diagram of aerodynamic and force analysis of the protective goggles device of the present invention during flight;

[0026] Figure 7 Schematic diagram of the internal structure of the protective goggles device of the present invention;

[0027] Figure 8 Schematic diagram of the structure of the shading device of the present invention;

[0028] Figure 9 Schematic diagram of the open and closed states of the neutral density filter lens in the shading device of the present invention;

[0029] Figure 10 Schematic diagram of the neutral density filter lens in the shading device of the present invention in a closed state;

[0030] Figure 11 It is a structural schematic diagram of the lens connection mechanism of the present invention.

[0031] The names corresponding to the marks in the figure are:

[0032] 1. UAV; 11. Gimbal connector; 12. Connecting column; 121. Knurling; 2. Camera lens; 3. Protective device; 31. Protective mirror device; 311. Arc-shaped portion; 312. Through hole A; 313. Protective lens; 314. Inlet pipe; 315. Outlet pipe; 316. Buffer chamber; 317. Baffle; 32. Shading device; 321. Threaded connection groove; 3211. Elastic rubber ring placement portion; 322. Mounting chamber; 3221. Spherical cross-section slide groove; 3222. Support member; 3223. Mounting groove; 3224. Connecting shaft; 3225. Roller; 3226. Limiting shaft. 3227. Rear side wall of the mounting chamber; 3228. Front side wall of the mounting chamber; 323. Shading aperture; 3231. Mouth-shaped connecting frame; 3232. Ball-shaped slider; 3233. Limiting slide groove; 3234. First hinge; 3235. Articulated rod; 3236. Second hinge; 3237. Third hinge; 3238. Neutral density filter lens; 324. Counterweight ball; 3241. Connecting line; 325. Through hole B; 326. Through hole C; 33. Lens connecting mechanism; 331. Anti-slip groove; 332. Threaded connecting part; 333. Lens connecting port; 334. Elastic rubber ring. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0034] Embodiments of the present invention:

[0035] like Figure 1-3 As shown, a gimbal connector 11 and a connecting column 12 are provided below the drone 1. The protective device 3 is connected to the connecting column 12 when not in use, and is connected to the camera lens 2 when in use (in the existing system, the gimbal connector 11 is used to connect the camera, and the camera is connected to the camera lens 2).

[0036] like Figure 4-7 As shown, a protective mirror device 31 is provided in the protective device 3, an arc-shaped portion 311 is provided above the protective mirror device 31, a through hole A312 is provided in the protective mirror device 31, a protective lens 313 is provided at the front end of the through hole A312, and an air inlet pipe 314 is provided below the protective mirror device 31. Under the action of air pressure, the air flowing in from the air inlet pipe 314 flows through the inner side of the protective lens 313 and escapes from the air outlet pipe 315, wherein a buffer chamber 316 is provided on the air outlet pipe 315, wherein a plurality of buffer chambers 316 are provided, and baffles 317 of various shapes are provided therein.

[0037] like Figure 4As shown in Figures 8-10, a shading device 32 is provided in the protective device 3, a threaded connection groove 321 is provided on one side of the shading device 32, a through hole C326 is provided in the threaded connection groove 321, and an elastic rubber ring placement portion 3211 is formed around the through hole C326.

[0038] The light shielding device 3 is provided with an installation chamber 322, and a limit shaft 3226 is arranged between the installation chamber rear side wall 3227 and the installation chamber front side wall 3228 of the installation chamber 322. The limit shaft 3226 is connected to the light shielding aperture 323, wherein the light shielding aperture 323 can rotate relative to the limit shaft 3226, and a "mouth"-shaped connecting frame 3231 is provided on the light shielding aperture 323. The upper part of the "mouth"-shaped connecting frame 3231 is connected to the ball-shaped slider 323. 2, and a spherical cross-section slide 3221 is provided on the upper side wall of the installation chamber 322. The spherical cross-section slide 3221 cooperates with a spherical slider 3232. A support member 3222 is provided below the installation chamber 322. The lower portion of the light-shielding aperture 232 is supported and placed on the support member 3222. The support member 3222 is provided with a mounting groove 3223. A roller 3225 is mounted in the mounting groove 3223 via a connecting shaft 3224. The light-shielding aperture 232 is placed on the support member 3222 in a rolling manner.

[0039] The cross-section inside the light-shielding aperture 323 is annular, and a limiting slide groove 3233 is arranged on the inner periphery of the light-shielding aperture 323. The limiting slide groove 3233 cooperates with the limiting shaft 3226, so that the light-shielding aperture 323 can rotate in the installation chamber 322, and a plurality of first hinged portions 3234 are arranged on the inner periphery of the light-shielding aperture 3233. The first hinged portion 3234 is connected to the hinged rod 3235, the hinged rod 3235 is connected to the second hinged portion 3236, the second hinged portion 3236 is connected to the neutral density filter lens 3238, and a third hinged portion 3237 is also provided on the neutral density filter lens 3238, and the third hinged portion 3237 is connected to the rear side wall 3227 of the installation chamber (the light-shielding aperture 3233 is open on one side of the rear side wall 3227 and the rear side wall 3228 of the installation chamber).

[0040] A small counterweight ball 324 is provided in the installation chamber 322. The small counterweight ball 324 is connected to the "mouth" shaped connecting frame 3231 via a connecting line 3241. The position of the small counterweight ball 324 is changed ( Figure 9-10 ) can drive the shading aperture 323 to rotate. When the shading aperture 323 rotates, the neutral density filter lens 3238 can be changed from an open state to a closed state under the drive of the connecting mechanism, thereby realizing the process of whether the through hole B325 is blocked.

[0041] like Figure 4,8,11, a lens connecting mechanism 33 is provided in the protective device 3, a through lens connecting port 333 is provided in the lens connecting mechanism 33, anti-slip grooves 331 are provided on the outer periphery of the lens connecting mechanism 33, and a threaded connecting portion 332 is provided on one side of the lens connecting mechanism 33, the threaded connecting portion 332 cooperates with the threaded connecting groove 321, and an elastic rubber ring 334 is placed in the elastic rubber ring placement portion 3211.

[0042] The principle of the present invention is:

[0043] When not in use, the protective device 3 of the present invention is connected to the connecting column 12 below the drone 1. During the process, the knurling 121 on the connecting column 12 increases the connection friction and ensures the stability of the connection. During surveying and mapping operations, the protective device 3 can be removed and installed in front of the camera lens 2. During the process, the lens connecting mechanism 33 is twisted to loosen the threaded connection part 332 or compress the elastic rubber ring 334, so that the elastic rubber ring 334 recovers or deforms, thereby loosening the connecting column 12 and compressing, clamping and fixing the camera lens 2.

[0044] The protective device 3 is installed on the camera lens 2 to protect the camera lens 2 and effectively prevent the camera lens 2 from being damaged during the lifting or flying of the drone. Since the camera lens 2 is expensive, unnecessary losses can be effectively avoided.

[0045] During use, considering the cost, the protective lens 313 should avoid using high-end lenses as much as possible, and its wear resistance should be guaranteed. Therefore, during use, when the drone 1 enters a warm and humid air environment, the protective lens 313 is prone to fogging, thereby affecting the quality of shooting. At this time, through the setting of the arc-shaped portion 311 in the protective lens device 31, during the flight of the drone 1, the air pressure above the protective lens device 31 is lower than the air pressure below. Therefore, air enters from the air inlet pipe 314 below the protective lens device 31, and when entering the through hole A312, a wind curtain is formed on the inner side of the protective lens 313 and is discharged from the air outlet pipe 315. During the process, since the air temperature and humidity on both sides of the protective lens 313 are consistent, the protective lens 313 can be effectively prevented from fogging. In actual use, even if fogging occurs, it will disappear quickly. Of course, if an anti-fog protective lens 313 is used, the effect will be better.

[0046] During the process of the above-mentioned air circulating in the outlet pipe 315, obvious noise of wind passing through the channel will be generated. The buffer chamber 316 on the outlet pipe 315 can buffer the circulation of air, and the baffle 317 can effectively reduce the wind speed, thereby effectively reducing the noise and reducing the impact on the shooting video. However, the noise cannot be completely eliminated during the process, but it does not affect the subsequent editing and processing of the video.

[0047] During the flight of the drone 1, when the external light is relatively strong, the camera may be overexposed, which will seriously affect the captured video. At this time, the flight state of the drone can be controlled by the remote control, and the drone body can be tilted during the process (using the remote control to control the drone 1 to adjust the flight attitude is an existing mature technology and will not be described in detail here). At this time, the counterweight ball 324 in the shading device 32 will rotate, thereby driving the shading aperture 323 to rotate. During the rotation of the shading aperture 323, the third hinge part 3237 is fixedly connected to the rear side wall 3227 of the mounting chamber, so its position will not change. However, at this time, due to the rotation of the shading aperture 323, the hinge rod 3235 will be driven to rotate, and the rotation of the hinge rod 3235 will cause the rotation of the hinge rod 3235. It will cause the neutral density filter lens 3238 to deflect, thereby realizing the opening and closing of the neutral density filter lens 3238. The neutral density filter lens 3288 is existing and can reduce the light intensity, so that the drone can still work when the light is strong, but the use of the neutral density filter lens 3288 may cause image color deviation, which can be corrected in the post-processing stage. In addition, when the neutral density filter lens 3238 is closed, it is necessary to ensure that the gaps at the joints of each lens are as small as possible. Of course, the higher the precision, the higher the cost. In this regard, considering the cost, the video can also be corrected in the post-processing process. Some conventional operations involving video editing are not repeated in detail in the process.

[0048] In the process of the counterweight ball 324 driving the shading aperture 323 to rotate, in order to ensure stability and smoothness, a roller 3225 is provided on the support member 3222 below the shading aperture 323, thereby ensuring the smoothness of the rotation of the shading aperture 323.

[0049] Application Example 1

[0050] A certain construction surveying and mapping company uses the protective device of the present invention to protect the camera lens during surveying and mapping operations.

[0051] During the six months of use, the protective device of the present invention performed well and achieved effective protection for the lens. At the same time, during the flight, there was no blurring of the video material caused by fogging of the protective lens, and the noise generated was small, with little impact on subsequent video material processing.

[0052] In previous surveying and mapping processes, when the light is strong, especially at noon, the drone is basically unable to work. By adopting the protective device of the present invention, the shading device can be quickly adjusted by adjusting the flight posture of the drone during surveying and mapping operations, which is very convenient to use.

[0053] By adjusting the shading device, operations that previously required several days can now be completed in one day, greatly improving the efficiency of the operation. At the same time, the surveying and mapping effects are good, bringing convenience to the surveying and mapping work.

[0054] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to that of the present application falls within the scope of protection of the present invention.

Claims

1. A surveying and mapping drone with a lens protection device, comprising a drone (1), a pan / tilt connector (11) provided below the drone (1), and characterized in that: A connecting column (12) is provided below the drone (1). When not performing surveying and mapping operations, the connecting column (12) is connected to the protective device (3). When performing surveying and mapping operations, the protective device (3) is connected to the camera lens (2). A protective mirror device (31) is provided in the protective device (3). An arc portion (311) is provided above the protective mirror device (31). A through hole A (312) is provided in the protective mirror device (31). ) is provided with a protective lens (313) at the front end, an air inlet pipe (314) is provided at the lower end of the protective lens device (31), the air inlet pipe (314) extends to the inner side surface of the protective lens (313), and an air outlet pipe (315) is provided above the inner side surface of the protective lens (313), a buffer chamber (316) is provided in the air outlet pipe (315), a plurality of buffer chambers (316) are provided, and a baffle (317) is provided in the buffer chamber (316).

2. The surveying and mapping drone with a lens protection device according to claim 1, characterized in that: The protective device (3) is provided with a lens connecting mechanism (33), the lens connecting mechanism (33) is connected to the protective mirror device (31), a threaded connecting portion (332) is provided in the lens connecting mechanism (33), a through lens connecting port (333) is provided in the threaded connecting portion (332), a threaded connecting groove (321) is provided at the end of the through hole A (312) of the protective mirror device (31), the threaded connecting groove (321) is matched with the threaded connecting portion (332), an elastic rubber ring placement portion (3211) is provided in the threaded connecting groove (321), an elastic rubber ring (334) is placed in the elastic rubber ring placement portion (3211), and the elastic rubber ring (334) is connected to the camera lens (2) through the lens connecting port (333), and the elastic rubber ring (334) is deformed under the extrusion of the threaded connecting portion (332) and compresses and fixes the camera lens (2).

3. The surveying and mapping drone with a lens protection device according to claim 2, characterized in that: The lens connection mechanism (33) is connected to the connection column (12), and a knurling (121) is provided on the surface of the connection column (12).

4. The surveying and mapping drone with a lens protection device according to claim 2, characterized in that: The protective device (3) is provided with a shading device (32), one side of the shading device (32) is fixedly connected to the protective mirror device (31), and the other side of the shading device (32) is connected to the lens connecting mechanism (33). A through hole C (326) is provided in the shading device (32), and the through hole C (326) is the same size as the through hole A (312) and is aligned with each other. The threaded connection groove (321) is arranged at the through hole C (326).

5. The surveying and mapping drone with a lens protection device according to claim 4, characterized in that: The shading device (32) is provided with an installation chamber (322), a through hole B (325) having the same size as the through hole C (326) is provided at the center of the installation chamber (322), a shading aperture (323) is installed in the installation chamber (322) for limited rotation, and a plurality of first hinged portions (3234) are provided in the shading aperture (323), the first hinged portion (3234) is connected to the hinged rod (3235), and the hinged rod (3235) is connected to the second hinged portion (323). 6), the second hinge portion (3236) is connected to the neutral density filter lens (3238), a third hinge portion (3237) is provided on the neutral density filter lens (3238), the third hinge portion (3237) is connected to the rear side wall (3227) of the installation chamber, the rotation of the light-shielding aperture (323) drives the neutral density filter lens (3238) to open and close, and when the neutral density filter lens (3238) is closed, it blocks and filters the through hole B (325).

6. The surveying and mapping drone with a lens protection device according to claim 5, characterized in that: A limiting shaft (3226) is arranged between the front side wall (3228) and the rear side wall (3227) of the installation chamber (322), and a limiting slide groove (3233) is arranged around the shading aperture (323). The limiting shaft (3226) is located in the limiting slide groove (3233). A plurality of limiting shafts (3226) and limiting slide grooves (3233) are provided and matched one by one. A "mouth" type connecting frame (3231) is provided above the shading aperture (323). 31) is connected to the spherical slider (3232), and a spherical cross-section slide groove (3221) is provided on the upper side wall of the installation chamber (322), the spherical cross-section slide groove (3221) cooperates with the spherical slider (3232), and a "mouth"-shaped connecting frame (3231) is provided to connect with the connecting line (3241), and the other end of the connecting line (3241) is connected to the counterweight ball (324), and the counterweight ball (324) is located in the cavity formed between the light-shielding aperture (323) and the installation chamber (322).

7. The surveying and mapping drone with a lens protection device according to claim 6, characterized in that: A support member (3222) is provided below the installation chamber (322), and the light-shielding aperture (323) is placed on the support member (3222) in a rolling manner.

8. The surveying and mapping drone with a lens protection device according to claim 7, characterized in that: The support member (3222) is provided with a mounting groove (3223), and a roller (3225) is mounted in the mounting groove (3223) via a connecting shaft (3224), with the upper portion of the roller (3225) in contact with the lower portion of the light-shielding aperture (323).

Images