An unmanned aerial vehicle anti-collision device

Abstract

The utility model discloses an unmanned plane anti -collision device, including unmanned plane main part and jet anti -thrust device, through setting up jet anti -thrust device, through horizontal and bottom jet subassembly's synergic control, after the collision risk of barrier detection sensor identification, with high pressure gas anti -thrust direct adjustment unmanned plane pose, avoid fuselage and barrier contact, fundamentally eliminate the structural damage risk of protective cover or fuselage, horizontal jet subassembly is equipped with rotatable jet pipe, and real -time adjustment jet angle is driven by servo motor gear system, and the combination bottom vertical jet can be aimed at different direction barrier accurate anti -thrust, cover all -directional shelter -seeking demand, when barrier detection sensor no.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically to a UAV anti-collision device. Background Technology

[0002] With the rapid development of drone technology, its application in logistics, surveying, agriculture and other fields is becoming increasingly widespread. However, when drones fly in complex environments (such as narrow spaces and areas with dense obstacles), the risk of collision increases significantly. Among current drone collision avoidance technologies, mechanical protective shields are a common passive protection solution. They absorb the impact of collisions by adding buffer structures (such as elastic supports, foam layers, etc.) around the fuselage. The protective shield can only reduce the impact force after a collision and cannot actively avoid collisions. In high-speed flight or environments with dense obstacles, repeated collisions can easily cause the protective shield to deform and break, requiring frequent replacement, which increases maintenance costs. Moreover, collisions can even cause structural damage to the fuselage (such as boom breakage and sensor displacement), requiring frequent downtime for maintenance, which seriously affects the continuity of operations. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a drone anti-collision device that solves the aforementioned problems.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a drone anti-collision device, comprising a drone body and a jet thrust reverser. The jet thrust reverser is mounted on the outer side of the drone body. The jet thrust reverser includes an air supply device, a horizontal jet assembly, a connecting pipe, and a bottom jet assembly. The horizontal jet assembly is mounted on the top of the air supply device. The air supply device is connected to the bottom jet assembly via the connecting pipe. The air supply device is fixed to the top of the drone body. The horizontal jet assembly is used to thrust the drone body horizontally. The bottom jet assembly is fixed to the bottom of the drone body and is used to thrust the bottom of the drone body.

[0007] Preferably, the air supply device includes a fixed shell, an air tank mounting slot, an air tank, a solenoid valve, a three-way pipe, a conduit, and a two-way pipe. The fixed shell has air tank mounting slots on its front and rear sides, and an air tank is installed in the air tank mounting slot. The air outlet of the air tank is connected to the solenoid valve through the conduit. The three ports of the three-way pipe are respectively connected to the solenoid valves of the two air tanks and the conduit, and the other end of the conduit is connected to the two-way pipe. The right side of the three-way pipe is connected to the connecting pipe, and the top of the three-way pipe is connected to the horizontal jet assembly. The fixed shell is fixed to the top of the UAV body.

[0008] Preferably, the horizontal jet assembly includes a housing, a rotating pipe, a jet pipe I, a gear I, a gear II, a motor, an angle sensor, a straight pipe, and a solenoid valve II. The rotating pipe is vertically arranged in the middle of the inner part of the housing. The top of the rotating pipe is connected to the jet pipe I. Gear I is fitted in the middle of the outer wall of the rotating pipe, and the rotating pipe is drivingly connected to gear I. The right side of gear I meshes with gear II. The output shaft of the motor passes through gear II and is connected to the angle sensor. The output shaft of the motor is drivingly connected to gear II and the angle sensor. The top of the straight pipe is inserted into the rotating pipe. The bottom end of the straight pipe is connected to solenoid valve II. The bottom end of solenoid valve II is connected to three-way pipe II. The bottom end of the housing is fixedly connected to fixed housing I.

[0009] Preferably, the top of the first jet pipe is arranged in a horizontal direction, and the bottom of the first jet pipe is arranged in a vertical direction.

[0010] Preferably, a sealing ring is provided at the top of the outer side of the straight tube, the outer wall of the sealing ring is tightly fitted with the inner wall of the rotating tube, and the inner wall of the rotating tube is rotatably connected to the sealing ring.

[0011] Preferably, a sensor mounting shell is provided at the bottom of the outer wall of the outer shell, and the bottom of the sensor mounting shell is fixedly connected to the fixed shell. An obstacle detection sensor is installed inside the sensor mounting shell. The obstacle detection sensor is installed in a ring array and is used to detect obstacles in the horizontal direction of the UAV.

[0012] Preferably, the bottom jet assembly includes a fixed shell, a jet pipe, a solenoid valve, and an obstacle detection sensor. The jet pipe is installed in the middle of the bottom of the fixed shell, and the nozzle at the bottom of the jet pipe is vertically downward. The top of the jet pipe is connected to the solenoid valve, and the other end of the solenoid valve is connected to a connecting pipe. An obstacle detection sensor is installed on the inner edge of the fixed shell. The bottom wall of the fixed shell has a through hole corresponding to the obstacle detection sensor. The obstacle detection sensor is used to detect obstacles on the bottom of the drone. The fixed shell is fixed to the bottom of the drone body.

[0013] Preferably, the outer wall of the drone body is fixed with a support arm, and a propeller assembly is installed on the support arm.

[0014] (III) Beneficial Effects

[0015] This invention provides a drone collision avoidance device. It offers the following advantages: By incorporating a jet thrust reverser, and through the coordinated control of the horizontal and bottom jet components, after the obstacle detection sensor identifies a collision risk, high-pressure gas thrust is used to directly adjust the drone's attitude, preventing contact between the drone and obstacles. This fundamentally eliminates the risk of structural damage to the protective shield or the drone's body. The horizontal jet component is equipped with a rotatable jet pipe, and a servo motor-driven gear system adjusts the jet angle in real time. Combined with the bottom vertical jet, it can accurately reverse-push obstacles in different directions (such as side walls and ground protrusions), covering omnidirectional obstacle avoidance needs. When the obstacle detection sensor detects the drone approaching the ground, the controller calculates the descent rate in real time and controls the thrust airflow intensity of the jet pipe by adjusting the opening of the solenoid valve, reducing the drone's descent speed to a safe threshold and preventing landing gear deformation or drone vibration caused by a hard landing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the jet thrust reverser device of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the gas supply device in this utility model;

[0019] Figure 4 This is a top view of the internal structure of the gas supply device in this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the horizontal jet assembly in this utility model;

[0021] Figure 6 This is a schematic diagram of the straight pipe structure in this utility model;

[0022] Figure 7 This is a top view of the internal structure of the sensor mounting housing in this utility model;

[0023] Figure 8 This is a schematic diagram of the internal structure of the bottom jet assembly in this utility model.

[0024] In the diagram: UAV main body-1, jet thrust reverser-2, support arm-3, propeller assembly-4, air supply device-21, horizontal jet assembly-22, connecting pipe-23, bottom jet assembly-24, fixed shell one-211, air tank mounting slot-212, air tank-213, solenoid valve one-214, three-way pipe one-215, conduit-216, three-way pipe two-217, outer shell-221, rotating pipe-222, jet pipe one-223, gear one-224, gear two-225, motor-226, angle sensor-227, straight pipe-228, solenoid valve two-229, sensor mounting shell-2210, obstacle detection sensor one-2211, sealing ring-2281, fixed shell two-241, jet pipe two-242, solenoid valve three-243, obstacle detection sensor two-244. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-2 This utility model provides a technical solution for a drone collision avoidance device: a drone collision avoidance device includes a drone body 1 and a jet thrust reverser 2. The jet thrust reverser 2 is installed on the outside of the drone body 1. The jet thrust reverser 2 includes an air supply device 21, a horizontal jet assembly 22, a connecting pipe 23, and a bottom jet assembly 24. The horizontal jet assembly 22 is installed on the top of the air supply device 21. The air supply device 21 is connected to the bottom jet assembly 24 through the connecting pipe 23. The air supply device 21 is fixed to the top of the drone body 1. The horizontal jet assembly 22 is used to reverse thrust in the horizontal direction of the drone body 1. The bottom jet assembly 24 is fixed to the bottom of the drone body 1. The bottom jet assembly 24 is used to reverse thrust at the bottom of the drone body 1.

[0027] The outer wall of the main body 1 of the drone is fixed with a support arm 3, and a propeller assembly 4 is installed on the support arm 3.

[0028] Please see Figure 3-4The air supply device 21 includes a fixed shell 211, an air tank mounting groove 212, an air tank 213, a solenoid valve 214, a three-way pipe 215, a conduit 216, and a two-way pipe 217. The fixed shell 211 has an air tank mounting groove 212 on its front and rear sides, and an air tank 213 is installed in the air tank mounting groove 212. The air outlet of the air tank 213 is connected to the solenoid valve 214 through the conduit. The three ports of the three-way pipe 215 are respectively connected to the solenoid valve 214 of the two air tanks 213 and the conduit 216. The other end of the conduit 216 is connected to the two-way pipe 217. The right side of the three-way pipe 217 is connected to the connecting pipe 23. The top of the three-way pipe 217 is connected to the horizontal jet assembly 22. The fixed shell 211 is fixed to the top of the UAV body 1.

[0029] An openable cover is provided on the outside or top of the fixed housing 211, allowing the gas cylinder 213 to be replaced by opening the cover. The gas cylinder 213 is equipped with a manual valve at its port to facilitate sealing of the gas cylinder 213 before installation. The gas cylinder 213 and the solenoid valve 214 are detachable and connected by a threaded connection. A sealing ring is provided at the connection to ensure a sealing effect, allowing the gas cylinder 213 to be disassembled and replaced.

[0030] Two gas cylinders 213 are used for gas supply to ensure sufficient gas supply, and the solenoid valve 214 connected to the gas cylinder 213 for gas supply is in the open state.

[0031] Please see Figure 5-7 The horizontal jet assembly 22 includes a housing 221, a rotating pipe 222, a jet pipe 223, a gear 224, a gear 225, a motor 226, an angle sensor 227, a straight pipe 228, and a solenoid valve 229. The rotating pipe 222 is vertically arranged in the center of the housing 221. The top of the rotating pipe 222 is connected to the jet pipe 223. A gear 224 is fitted into the center of the outer wall of the rotating pipe 222, and the rotating pipe 222 is connected to the gear 224 in a transmission connection. The right side of 224 meshes with gear 225. The output shaft of motor 226 passes through gear 225 and is connected to angle sensor 227. The output shaft of motor 226 is connected to gear 225 and angle sensor 227. The top of straight tube 228 is inserted into rotating tube 222. The bottom of straight tube 228 is connected to solenoid valve 229. The bottom of solenoid valve 229 is connected to three-way pipe 217. The bottom of housing 221 is fixedly connected to fixed housing 211.

[0032] The top of the jet pipe 223 is set horizontally and the bottom of the jet pipe 223 is set vertically, so that the jet pipe 223 sprays air in a horizontal direction, achieving the effect of horizontally pushing the main body of the drone.

[0033] A sealing ring 2281 is provided on the top of the straight tube 228. The outer wall of the sealing ring 2281 is tightly fitted with the inner wall of the rotating tube 222, and the inner wall of the rotating tube 222 is rotatably connected to the sealing ring 2281. The sealing ring 2281 seals the straight tube 228 and the rotating tube 222, allowing the rotating tube 222 to rotate while ensuring a sealed connection with the straight tube 228.

[0034] A sensor mounting shell 2210 is provided at the bottom of the outer wall of the outer shell 221, and the bottom of the sensor mounting shell 2210 is fixedly connected to the fixed shell 211. An obstacle detection sensor 2211 is installed inside the sensor mounting shell 2210. The obstacle detection sensor 2211 is installed in a ring array and is used to detect obstacles in the horizontal direction of the UAV.

[0035] Please see Figure 8 The bottom jet assembly 24 includes a fixed housing 241, a jet pipe 242, a solenoid valve 243, and an obstacle detection sensor 244. The jet pipe 242 is installed in the middle of the bottom end of the fixed housing 241. The nozzle at the bottom of the jet pipe 242 is vertically downward. The top of the jet pipe 242 is connected to the solenoid valve 243, and the other end of the solenoid valve 243 is connected to the connecting pipe 23. The obstacle detection sensor 244 is installed on the inner edge of the fixed housing 241. The bottom wall of the fixed housing 241 has a through hole corresponding to the obstacle detection sensor 244. The obstacle detection sensor 244 is used to detect obstacles at the bottom of the drone. The fixed housing 241 is fixed to the bottom end of the drone body 1.

[0036] Obstacle detection sensor 1 2211 and obstacle detection sensor 2 244 can use ultrasonic sensors, which are suitable for detecting obstacles, and are low-cost and have strong resistance to environmental interference.

[0037] Real-time obstacle monitoring using sensors is a mature existing technology. Obstacle detection sensor 1 2211 and obstacle detection sensor 2 244 can be combined with multi-sensor fusion technology (such as ultrasonic + lidar) to improve the reliability and environmental adaptability of obstacle detection.

[0038] Motor 226 is a servo motor (DC brushless) with closed-loop control, moderate torque (e.g., 0.5-1.5 N·m), and fast response speed, making it suitable for precise drive gear systems to adjust the jet direction;

[0039] The angle sensor 227 uses a rotary encoder (photoelectric type) to provide high-precision angle feedback (resolution 0.1°), which is suitable for real-time control of the jet nozzle rotation angle;

[0040] The gas tank 213 is a lightweight high-pressure gas tank made of aluminum alloy or carbon fiber composite material, with a pressure resistance rating of ≥20MPa. It is equipped with a safety pressure relief valve and quick interface to store compressed air or nitrogen to provide a stable gas source.

[0041] Obstacle detection sensor 1 2211, obstacle detection sensor 244, motor 226 and solenoid valve are electrically connected to the controller and power supply components of the UAV body 1, and data calculation and control are performed by the controller inside the UAV body 1.

[0042] In use, obstacle detection sensor 2211 and obstacle detection sensor 244 are used to detect obstacles in the horizontal direction and at the bottom of the drone, respectively, and to predict collisions. Based on the predicted collision angle, the horizontal jet assembly 22 and the bottom jet assembly 24 are used to perform jet thrust to avoid obstacles.

[0043] When horizontal thrust is required, motor 226 is first controlled to drive gear 225 to rotate, and gear 225 drives gear 224 to rotate. Gear 224 drives rotating pipe 222 and jet pipe 223 to rotate, adjusting the jet angle of jet pipe 223. Angle sensor 227 monitors the rotation angle of gear 225, thereby detecting the rotation angle of jet pipe 223, so as to accurately control the jet direction of jet pipe 223. After the angle is adjusted, solenoid valve 229 is opened, allowing air inside air tank 213 to pass through three-way pipe 215, conduit 216, three-way pipe 217, straight pipe 228, rotating pipe 222, and then be ejected through jet pipe 223. The ejected gas propels the drone backward, effectively preventing the drone from colliding with obstacles.

[0044] When it is necessary to push the bottom of the drone, the solenoid valve 243 is opened to allow the air inside the air tank 213 to be ejected vertically downward through the jet pipe 242, thereby achieving the effect of jet thrusting the bottom of the drone body 1. This can prevent the drone from falling too fast and causing excessive stress on the drone landing gear, which could lead to damage.

[0045] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0046] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

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

Claims

1. A drone collision avoidance device, characterized in that: The device includes a drone body (1) and a jet thrust reverser (2). The jet thrust reverser (2) is installed on the outside of the drone body (1). The jet thrust reverser (2) includes an air supply device (21), a horizontal jet assembly (22), a connecting pipe (23), and a bottom jet assembly (24). The horizontal jet assembly (22) is installed on the top of the air supply device (21). The air supply device (21) is connected to the bottom jet assembly (24) through the connecting pipe (23). The air supply device (21) is fixed to the top of the drone body (1). The horizontal jet assembly (22) is used to thrust the drone body (1) horizontally. The bottom jet assembly (24) is fixed to the bottom of the drone body (1) and is used to thrust the drone body (1) at the bottom.

2. The anti-collision device for unmanned aerial vehicles according to claim 1, characterized in that: The gas supply device (21) includes a fixed housing (211), a gas cylinder mounting slot (212), a gas cylinder (213), a solenoid valve (214), a three-way pipe (215), a conduit (216), and a two-way pipe (217). The fixed housing (211) has gas cylinder mounting slots (212) on its front and rear sides, and a gas cylinder (213) is installed in the gas cylinder mounting slot (212). The gas outlet of the gas cylinder (213) is connected to the solenoid valve (214) through the conduit. The three ports of the first three-way pipe (215) are connected to the first solenoid valve (214) and the conduit (216) of the two gas tanks (213), respectively. The other end of the conduit (216) is connected to the second three-way pipe (217). The right side of the second three-way pipe (217) is connected to the connecting pipe (23), and the top of the second three-way pipe (217) is connected to the horizontal jet assembly (22). The first fixed shell (211) is fixed to the top of the UAV body (1).

3. The anti-collision device for unmanned aerial vehicles according to claim 1, characterized in that: The horizontal jet assembly (22) includes a housing (221), a rotating pipe (222), a jet pipe one (223), a gear one (224), a gear two (225), a motor (226), an angle sensor (227), a straight pipe (228), and a solenoid valve two (229). The rotating pipe (222) is vertically arranged in the middle of the inner part of the housing (221). The top of the rotating pipe (222) is connected to the jet pipe one (223). The gear one (224) is fitted in the middle of the outer wall of the rotating pipe (222), and the rotating pipe (222) is connected to the gear one (224) in a transmission connection. The right side of the first (224) meshes with the second gear (225). The output shaft of the motor (226) passes through the second gear (225) and is connected to the angle sensor (227). The output shaft of the motor (226) is connected to the second gear (225) and the angle sensor (227) in a transmission connection. The top of the straight tube (228) is inserted into the rotating tube (222). The bottom end of the straight tube (228) is connected to the second solenoid valve (229). The bottom end of the second solenoid valve (229) is connected to the second three-way pipe (217). The bottom end of the outer shell (221) is fixedly connected to the first fixed shell (211).

4. The anti-collision device for unmanned aerial vehicles according to claim 3, characterized in that: The top of the jet pipe (223) is arranged horizontally, and the bottom of the jet pipe (223) is arranged vertically.

5. The anti-collision device for unmanned aerial vehicles according to claim 3, characterized in that: A sealing ring (2281) is provided on the top of the outside of the straight tube (228). The outer wall of the sealing ring (2281) is tightly fitted with the inner wall of the rotating tube (222), and the inner wall of the rotating tube (222) is rotatably connected to the sealing ring (2281).

6. The anti-collision device for unmanned aerial vehicles according to claim 3, characterized in that: The bottom of the outer wall of the outer shell (221) is provided with a sensor mounting shell (2210), and the bottom of the sensor mounting shell (2210) is fixedly connected to the fixed shell (211). An obstacle detection sensor (2211) is installed inside the sensor mounting shell (2210). The obstacle detection sensor (2211) is installed in a ring array. The obstacle detection sensor (2211) is used to detect obstacles in the horizontal direction of the UAV.

7. The anti-collision device for unmanned aerial vehicles according to claim 1, characterized in that: The bottom jet assembly (24) includes a fixed shell (241), a jet pipe (242), a solenoid valve (243), and an obstacle detection sensor (244). The jet pipe (242) is installed in the middle of the bottom of the fixed shell (241). The nozzle of the jet pipe (242) is vertically downward. The top of the jet pipe (242) is connected to the solenoid valve (243), and the other end of the solenoid valve (243) is connected to the connecting pipe (23). The obstacle detection sensor (244) is installed on the inner edge of the fixed shell (241). The bottom wall of the fixed shell (241) has a through hole corresponding to the obstacle detection sensor (244). The obstacle detection sensor (244) is used to detect obstacles on the bottom of the UAV. The fixed shell (241) is fixed to the bottom of the UAV body (1).

8. The anti-collision device for unmanned aerial vehicles according to claim 1, characterized in that: The outer wall of the main body (1) of the drone is fixed with a support arm (3), and a propeller assembly (4) is installed on the support arm (3).

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