Anti-collision early warning device for unmanned aerial vehicle flying at low altitude

Abstract

The utility model discloses an anti-collision early warning device for a low-altitude flight unmanned aerial vehicle, and particularly relates to the technical field of unmanned aerial vehicles, which comprises an unmanned aerial vehicle body, a supporting column is fixedly arranged at the bottom of the unmanned aerial vehicle body, a first fixing frame is arranged at the bottom of the supporting column, and a camera is arranged in the first fixing frame. An anti-collision mechanism is arranged at the top of the unmanned aerial vehicle body and comprises a processor fixedly arranged at the top of the unmanned aerial vehicle body, propellers are arranged on the two sides of the unmanned aerial vehicle body, protective rings are fixedly arranged outside the propellers, a plurality of outer springs are fixedly arranged on one sides of the protective rings, and arc-shaped protective plates are fixedly arranged on one sides of the outer springs. And a laser radar is mounted at the top of the arc-shaped protection plate. The unmanned aerial vehicle comprehensively senses the environment, the processor accurately processes data and accurately evaluates the collision risk, and the protection rings are matched with the outer springs and the arc-shaped protection plates, so that collision impact can be buffered, and the propellers and the unmanned aerial vehicle body are protected.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and more specifically, to a collision avoidance and early warning device for low-altitude flying UAVs. Background Technology

[0002] Unmanned aerial vehicles (UAVs) are unmanned aircraft controlled by radio remote control equipment and onboard program control devices, or operated autonomously by an onboard computer, either completely or intermittently. Often, in order to improve the shooting effect of UAVs, operators will control the UAVs to fly at low altitudes. However, when flying at low altitudes, there are significantly more obstacles compared to flying at high altitudes, thus requiring protection of the UAV's safety.

[0003] Currently, most drones on the market fly at low altitudes, especially in urban environments where tall buildings and trees can obstruct their flight. If an operational problem occurs, due to poor protection, the drone may collide with the obstacle. Such collisions usually damage the propeller. Once the propeller is damaged, the drone is essentially out of control and may crash.

[0004] A search revealed that Chinese patent CN218431768U discloses a low-altitude flight protection device for drones. This device uses connecting bolts to install a protective shell on the top of the drone body and a protective railing to surround the drone's propeller. This prevents the propeller from colliding with obstacles during low-altitude flight, thus avoiding damage to the propeller. When high-altitude flight is required, the protective mechanism can be disassembled, reducing the overall weight and wind resistance of the device, achieving the effect of protecting the drone's propeller. Furthermore, by creating sliding grooves on the outer surface of the drone body and using buffer components to support the landing gear, the buffer components provide cushioning due to sliding. When landing on uneven ground, this helps keep the drone body relatively level, achieving shock reduction and a stable landing.

[0005] However, in actual use and flight, this structure is difficult to detect and avoid these obstacles in time, and collision accidents are likely to occur. Although the protective railing is arranged in a semi-circle to wrap around the propeller and has gaps to avoid blocking the propeller's rotation and lift, it may still be insufficient in some complex low-altitude environments with small obstacles such as tree branches. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a collision avoidance warning device for low-altitude flying drones to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A collision avoidance warning device for low-altitude flying drones includes a drone body, a support column fixedly installed at the bottom of the drone body, a first fixing frame installed at the bottom of the support column, a camera installed inside the first fixing frame, and a collision avoidance mechanism installed at the top of the drone body.

[0009] The anti-collision mechanism includes a processor fixedly mounted on the top of the drone body, propellers on both sides of the drone body, protective rings fixedly mounted on the outside of the propellers, multiple outer springs fixedly mounted on one side of each protective ring, an arc-shaped protective plate fixedly mounted on one side of each outer spring, and a lidar mounted on the top of the arc-shaped protective plate.

[0010] Ultrasonic sensors are installed around the entire body of the drone, and a signal controller is fixedly installed on one side of the drone body.

[0011] By adopting the above technical solutions: the environment is fully perceived, the processor accurately processes the data, and the collision risk is accurately assessed. The protective ring, combined with the outer spring and the arc-shaped protective plate, can buffer the impact of the collision and protect the propeller and the drone body. The camera is installed in the first fixed frame at the bottom to facilitate the acquisition of image information below and around, and to assist in collision avoidance judgment.

[0012] As a further description of the above technical solution: a protective mechanism is provided on one side of the protective ring, the protective mechanism includes threaded rings fixedly disposed on both sides of the protective ring, a threaded ring sleeve is threadedly connected to the outside of the threaded ring, a protective mesh is fixedly disposed on the inner wall of the threaded ring sleeve, an installation groove is opened on the surface of the arc-shaped protective plate, an LED warning light strip is fixedly disposed inside the installation groove, and a storage battery is embedded inside the arc-shaped protective plate.

[0013] By adopting the above technical solution: the curved protective plate is equipped with LED warning light strips, which can light up when a collision risk is detected, providing a clear warning to surrounding objects or people and giving early warning of potential dangers.

[0014] As a further description of the above technical solution: a second fixed frame is inserted into one side of the first fixed frame, a U-shaped frame is fixedly installed at the bottom of the first fixed frame, a locking rod is slidably installed inside the U-shaped frame, an inner spring is sleeved on the outside of the locking rod, one end of the locking rod passes through the first fixed frame and the second fixed frame in sequence and extends into the second fixed frame, and a handle is fixedly installed at the other end of the locking rod.

[0015] By adopting the above technical solution, it is easy to install and remove the camera. When the camera needs to be maintained, repaired or replaced, the operation is simple and quick. It also ensures that the camera remains stable during the flight of the drone and will not loosen or fall off due to vibration or other factors.

[0016] As a further description of the above technical solution: reinforcing blocks are fixedly provided on the surfaces of both the second fixing frame and the first fixing frame, and openings are provided on the surfaces of both the second fixing frame and the first fixing frame. Multiple fins are fixedly provided inside the openings, and a heat sink is fixedly provided at one end of each fin.

[0017] By adopting the above technical solutions, the drone can better resist external impacts during flight, ensuring the safety and stability of the internal camera, extending its overall service life, and the fins increase the heat dissipation area, ensuring its normal operation.

[0018] As a further description of the above technical solution: the bottom of the drone body is fixedly provided with two support legs, the support legs are made of lightweight and high-strength alloy material, the bottom of the support legs is fixedly provided with a base plate, and a rubber layer is fixedly provided on one side of the base plate;

[0019] The UAV body is internally equipped with a power module and a communication module, with the power module located on one side of the communication module.

[0020] By adopting the above technical solution, the support legs effectively reduce the overall weight of the drone while ensuring support strength, which is conducive to improving the drone's flight performance and endurance. At the same time, the rubber layer increases the friction with the ground, making the drone landing more stable, preventing slippage, and improving the overall functionality and reliability of the drone.

[0021] The technical effects and advantages of this utility model are as follows:

[0022] 1. By setting up an anti-collision mechanism, compared with existing technologies, it comprehensively utilizes ultrasonic sensors, lidar, and cameras to collect near-range, long-range, and visual information respectively. Through data fusion by the processor, the accuracy and reliability of obstacle detection are greatly improved. It can fully perceive the surrounding environment, reduce false judgments and missed judgments. Moreover, when the processor judges that there is a collision risk, it promptly controls the LED warning light strip to light up, effectively warning surrounding objects or people, reducing the probability of collision accidents, and ensuring the safety of the drone itself, the surrounding environment, and personnel. Furthermore, the setting of protective rings and protective nets can play a buffering and protective role in the event of a collision, protecting the propellers and improving the stability and durability of the device.

[0023] 2. By incorporating protective mechanisms, compared to existing technologies, the protective ring and netting outside the propeller can buffer during collisions, reducing damage to the propeller and drone, and improving equipment safety and durability. Furthermore, the first and second fixed frames, along with the clamps and other structures, facilitate maintenance and replacement of the camera by operators, improving the maintainability of the equipment. The fins and heat sinks help the camera dissipate heat effectively, ensuring its stable operation. The lightweight, high-strength alloy support legs and the rubber-layered base plate can buffer and stably support the drone during landing, enhancing overall stability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0025] Figure 2 This is a schematic diagram of the overall front view of the present invention.

[0026] Figure 3 This is a schematic diagram of the anti-collision mechanism of this utility model.

[0027] Figure 4 This is a schematic diagram of the disassembled structure of the anti-collision mechanism of this utility model.

[0028] Figure 5 This is a cross-sectional schematic diagram of the protective structure of this utility model.

[0029] Figure 6 This is a schematic diagram showing the detailed cross-sectional structure of the protective mechanism of this utility model.

[0030] Figure 7 This is a schematic diagram of the UAV body structure from a bottom view.

[0031] Figure 8 This is a schematic diagram of the system of this utility model.

[0032] The attached diagram is labeled as follows: 1. UAV body; 2. Support column; 3. First fixing frame; 4. Camera; 5. Processor; 6. Propeller; 7. Protective ring; 8. Outer spring; 9. Arc-shaped protective plate; 10. LiDAR; 11. Ultrasonic sensor; 12. Signal controller; 13. Threaded ring; 14. Threaded ring sleeve; 15. Protective net; 16. LED warning light strip; 17. Battery; 18. Second fixing frame; 19. U-shaped frame; 20. Clamping rod; 21. Inner spring; 22. Handle; 23. Reinforcing block; 24. Fin; 25. Heat sink; 26. Support leg; 27. Base plate; 28. Rubber layer; 29. ​​Power module; 30. Communication module. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] The embodiments disclosed in this application are as follows: Figures 1-7 The device shown is a collision avoidance warning device for low-altitude flying drones, including a drone body 1, a support column 2 fixedly installed at the bottom of the drone body 1, a first fixed frame 3 installed at the bottom of the support column 2, a camera 4 installed inside the first fixed frame 3, and a collision avoidance mechanism installed at the top of the drone body 1.

[0035] The anti-collision mechanism includes a processor 5 fixedly installed on the top of the drone body 1, propellers 6 on both sides of the drone body 1, a protective ring 7 fixedly installed on the outside of the propellers 6, multiple outer springs 8 fixedly installed on one side of the protective rings 7, an arc-shaped protective plate 9 fixedly installed on one side of the outer springs 8, and a laser radar 10 installed on the top of the arc-shaped protective plate 9.

[0036] Ultrasonic sensors 11 are installed around the drone body 1, and a signal controller 12 is fixedly installed on one side of the drone body 1.

[0037] When the drone body 1 is started, the ultrasonic sensors 11 installed around the drone body 1 begin to work. The ultrasonic sensors 11 continuously emit ultrasonic signals. When the ultrasonic waves encounter surrounding obstacles, they are reflected back. The sensors receive the reflected waves and transmit the information to the processor. The processor 5 records the time when the ultrasonic signal is emitted and the time when the reflected wave is received, and calculates the distance between the obstacle and the drone body to obtain the situation of nearby obstacles.

[0038] At the same time, the lidar 10 installed on top of the arc-shaped protective plate 9 also started to operate. The lidar 10 continuously emitted laser beams to scan the environment around the drone body 1. When the laser encountered an object, it reflected back. The lidar 10 received the reflected light and transmitted the information to the processor. The processor 5 recorded the time when the lidar 10 emitted the laser beam and the time when it received the reflected wave, and calculated the distance between the obstacle and the drone body.

[0039] The camera 4 installed inside the first fixed frame 3 collects image data in real time. The camera 4 obtains information about the surrounding environment from a visual perspective. The data collected by the ultrasonic sensor 11, the lidar 10 and the camera 4 are all sent to the processor 5, and the position of the object is determined by the processing of the processor 5.

[0040] ReferenceFigures 2-4 As shown, a protective mechanism is provided on one side of the protective ring 7. The protective mechanism includes threaded rings 13 fixedly installed on both sides of the protective ring 7. A threaded ring sleeve 14 is threadedly connected to the outside of the threaded ring 13. A protective net 15 is fixedly installed on the inner wall of the threaded ring sleeve 14. An installation groove is opened on the surface of the arc-shaped protective plate 9. An LED warning light strip 16 is fixedly installed inside the installation groove. A storage battery 17 is embedded inside the arc-shaped protective plate 9.

[0041] Based on the processed data, when the processor 5 determines that there is a collision risk, the processor 5 will transmit the collision risk information to the signal controller 12. The signal controller 12 will control the LED warning light strip 16 to light up, which is powered by the battery 17 embedded in the arc-shaped protective plate 9, to warn surrounding objects or people.

[0042] On the other hand, the processor 5 transmits collision risk information to the signal controller 12, which is powered by the power module 29 via the communication module 30, to alert the operator.

[0043] Reference Figures 4-6 As shown, a second fixed frame 18 is inserted into one side of the inside of the first fixed frame 3. A U-shaped frame 19 is fixedly installed at the bottom of the first fixed frame 3. A locking rod 20 is slidably installed inside the U-shaped frame 19. An inner spring 21 is sleeved on the outside of the locking rod 20. One end of the locking rod 20 passes through the first fixed frame 3 and the second fixed frame 18 in sequence and extends into the second fixed frame 18. A handle 22 is fixedly installed at the other end of the locking rod 20.

[0044] The protective rings 7 on the outside of the propellers 6 on both sides of the drone and the protective net 15 connected to one side of the protective rings 7 by threaded rings 13 and threaded ring sleeves 14 can play a certain role in buffering and protection, reducing the damage caused by collision.

[0045] For the first fixed frame 3 and the second fixed frame 18 where the camera 4 is installed, when it is necessary to maintain or replace the camera 4, the operator can pull the handle 22 on the lever 20 to overcome the elastic force of the inner spring 21, so that the lever 20 can be pulled out from the second fixed frame 18, thereby allowing the second fixed frame 18 to be removed from the first fixed frame 3 for operation.

[0046] Reference Figures 6-7 As shown, reinforcing blocks 23 are fixedly installed on the surfaces of the second fixing frame 18 and the first fixing frame 3. Openings are provided on the surfaces of the second fixing frame 18 and the first fixing frame 3. Multiple fins 24 are fixedly installed inside the openings. A heat sink 25 is fixedly installed at one end of each fin 24. The fins 24 inside the openings on the surfaces of the first fixing frame 3 and the second fixing frame 18, as well as the heat sink 25 in contact with the camera 4, can help the camera 4 dissipate heat and ensure its normal operation.

[0047] Reference Figure 7 As shown, the bottom of the drone body 1 is fixedly provided with two support legs 26. The support legs 26 are made of lightweight and high-strength alloy material. The bottom of the support legs 26 is fixedly provided with a base plate 27, and a rubber layer 28 is fixedly provided on one side of the base plate 27.

[0048] The drone body 1 has a power module 29 and a communication module 30 embedded inside. The power module 29 is located on one side of the communication module 30. The bottom of the drone body 1 has support legs 26 made of lightweight high-strength alloy material and a bottom plate 27 with a rubber layer 28, which can play a role in buffering and stabilizing support when the drone lands.

[0049] Working principle of this utility model:

[0050] This utility model is a collision avoidance and early warning device for low-altitude flying drones. When the drone body 1 is started, the ultrasonic sensors 11 installed around the drone body 1 start to work. The ultrasonic sensors 11 continuously emit ultrasonic signals. When the ultrasonic waves encounter surrounding obstacles, they will be reflected back. The sensors receive the reflected waves and transmit the information to the processor. The processor 5 records the time when the ultrasonic signal is emitted and the time when the reflected wave is received, and calculates the distance between the obstacle and the drone body, thereby obtaining the situation of nearby obstacles.

[0051] At the same time, the lidar 10 installed on top of the arc-shaped protective plate 9 also started to operate. The lidar 10 continuously emitted laser beams to scan the environment around the drone body 1. When the laser encountered an object, it reflected back. The lidar 10 received the reflected light and transmitted the information to the processor. The processor 5 recorded the time when the lidar 10 emitted the laser beam and the time when it received the reflected wave, and calculated the distance between the obstacle and the drone body.

[0052] The camera 4 installed inside the first fixed frame 3 collects image data in real time. The camera 4 obtains information about the surrounding environment from a visual perspective. The data collected by the ultrasonic sensor 11, the lidar 10 and the camera 4 are all sent to the processor 5, and the position of the object is determined by the processing of the processor 5.

[0053] Based on the processed data, when the processor 5 determines that there is a collision risk, the processor 5 will transmit the collision risk information to the signal controller 12. The signal controller 12 will control the LED warning light strip 16 to light up, which is powered by the battery 17 embedded in the arc-shaped protective plate 9, to warn surrounding objects or people.

[0054] On the other hand, the processor 5 will transmit the collision risk information to the signal controller 12, which is powered by the power module 29 through the communication module 30, to remind the operator to pay attention;

[0055] The protective rings 7 on the outside of the propellers 6 on both sides of the drone and the protective net 15 connected to one side of the protective rings 7 by threaded rings 13 and threaded ring sleeves 14 can play a certain role in buffering and protection, reducing the damage caused by collision.

[0056] For the first fixed frame 3 and the second fixed frame 18 where the camera 4 is installed, when it is necessary to maintain or replace the camera 4, the operator can pull the handle 22 on the lever 20 to overcome the elastic force of the inner spring 21 and pull the lever 20 out of the second fixed frame 18, so that the second fixed frame 18 can be removed from the first fixed frame 3 for operation.

[0057] The fins 24 inside the openings on the surfaces of the first fixed frame 3 and the second fixed frame 18, as well as the heat sink 25 that contacts the camera 4, can help the camera 4 dissipate heat and ensure its normal operation. In addition, the support legs 26 made of lightweight high-strength alloy material and the bottom plate 27 with a rubber layer 28 at the bottom of the drone body 1 can play a role in buffering and stabilizing support when the drone lands.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A collision avoidance and early warning device for low-altitude flying unmanned aerial vehicles (UAVs), comprising the UAV body (1), characterized in that: The bottom of the drone body (1) is fixedly provided with a support column (2), the bottom of the support column (2) is provided with a first fixed frame (3), a camera (4) is installed inside the first fixed frame (3), and an anti-collision mechanism is provided on the top of the drone body (1). The anti-collision mechanism includes a processor (5) fixedly installed on the top of the drone body (1), a propeller (6) is provided on both sides of the drone body (1), a protective ring (7) is fixedly installed on the outside of the propeller (6), a plurality of external springs (8) are fixedly installed on one side of the protective ring (7), an arc-shaped protective plate (9) is fixedly installed on one side of the external spring (8), and a laser radar (10) is installed on the top of the arc-shaped protective plate (9). Ultrasonic sensors (11) are installed around the drone body (1), and a signal controller (12) is fixedly installed on one side of the drone body (1).

2. The collision avoidance and early warning device for low-altitude flying unmanned aerial vehicles according to claim 1, characterized in that: A protective mechanism is provided on one side of the protective ring (7). The protective mechanism includes a threaded ring (13) fixedly disposed on both sides of the protective ring (7). The threaded ring (13) is connected to a threaded ring sleeve (14) by an external thread. A protective net (15) is fixedly disposed on the inner wall of the threaded ring sleeve (14).

3. The collision avoidance and early warning device for low-altitude flying unmanned aerial vehicles according to claim 1, characterized in that: The surface of the arc-shaped protective plate (9) is provided with an installation groove, and an LED warning light strip (16) is fixedly installed inside the installation groove. A storage battery (17) is embedded inside the arc-shaped protective plate (9).

4. The collision avoidance and early warning device for low-altitude flying unmanned aerial vehicles according to claim 1, characterized in that: A second fixed frame (18) is inserted into one side of the first fixed frame (3), and a U-shaped frame (19) is fixedly installed at the bottom of the first fixed frame (3). A locking rod (20) is slidably installed inside the U-shaped frame (19), and an inner spring (21) is sleeved on the outside of the locking rod (20).

5. The collision avoidance and early warning device for low-altitude flying unmanned aerial vehicles according to claim 4, characterized in that: One end of the lever (20) passes through the first fixed frame (3) and the second fixed frame (18) in sequence and extends into the second fixed frame (18). The other end of the lever (20) is fixedly provided with a handle (22).

6. The collision avoidance and early warning device for low-altitude flying unmanned aerial vehicles according to claim 4, characterized in that: The second fixed frame (18) and the first fixed frame (3) are both fixedly provided with reinforcing blocks (23), and the surfaces of the second fixed frame (18) and the first fixed frame (3) are both provided with openings.

7. The collision avoidance and early warning device for low-altitude flying unmanned aerial vehicles according to claim 6, characterized in that: Multiple fins (24) are fixedly arranged inside the opening, and a heat sink (25) is fixedly arranged at one end of the fins (24).

8. The collision avoidance and early warning device for low-altitude flying unmanned aerial vehicles according to claim 1, characterized in that: The bottom of the drone body (1) is fixedly provided with two support legs (26), which are made of lightweight and high-strength alloy material.

9. The collision avoidance and early warning device for low-altitude flying unmanned aerial vehicles according to claim 8, characterized in that: A base plate (27) is fixedly provided at the bottom of the support leg (26), and a rubber layer (28) is fixedly provided on one side of the base plate (27).

10. The collision avoidance and early warning device for low-altitude flying unmanned aerial vehicles according to claim 1, characterized in that: The UAV body (1) is internally equipped with a power module (29) and a communication module (30), with the power module (29) located on one side of the communication module (30).

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