Precise landing device of unmanned aerial vehicle

Abstract

The invention relates to the technical field of unmanned aerial vehicle landing, and discloses an unmanned aerial vehicle precise landing device which comprises a landing platform, four connecting sleeve blocks are fixedly connected to the outer side of the landing platform, supporting rods are slidably connected to the centers of the four connecting sleeve blocks, springs are fixedly connected to the bottom sides of the four connecting sleeve blocks, and the supporting rods are fixedly connected to the bottom sides of the four connecting sleeve blocks. According to the device, through a multi-sensor fusion positioning and closed-loop control algorithm, centimeter-level precise landing can be achieved in a complex environment, and accidents such as collision and rollover of the unmanned aerial vehicle caused by landing deviation are effectively avoided; the device completely gets rid of the dependence on the GPS through the combination of technologies such as visual positioning (two-dimensional code / AR label identification), laser radar (three-dimensional terrain construction) and the like. Therefore, the unmanned aerial vehicle can play a role in more scenes; due to full-process automatic control (from approaching to landing to touching the ground to close the motor, manual intervention is not needed) of the device, and dependence on professional operators is greatly reduced.

Description

Technical Field

[0001] This application relates to the technical field of drone landing, and in particular to a precision landing device for drones. Background Technology

[0002] Unmanned aerial vehicles (UAVs) are unmanned aircraft controlled by radio remote control equipment and their own program control devices.

[0003] However, in practical applications, most existing drones are usually manually controlled and landed at a designated location during the landing process without any other auxiliary equipment. However, due to the complexity of the natural environment, drone landing is easily affected by various external factors, which can interfere with the accuracy of the landing, resulting in limitations and hindering its widespread use.

[0004] Therefore, those skilled in the art have provided a precision landing device for unmanned aerial vehicles to solve the problems mentioned in the background art. Summary of the Invention

[0005] To address the problem mentioned in the background art that the complexity of the natural environment makes drone landing susceptible to interference from various external factors, which in turn affects the accuracy of landing and leads to limitations, hindering its widespread use, this application provides a precision landing device for drones.

[0006] The precision landing device for a drone provided in this application adopts the following technical solution: it includes a drone end and a landing point end, and the drone end and the landing point end each include the following components:

[0007] S1: The UAV terminal includes: a sensor module, a data processing unit, a communication module, and an actuator;

[0008] S2: The landing point includes: markers and auxiliary lighting structures.

[0009] Preferably, the sensor module utilizes a high-definition camera, LiDAR, ultrasonic sensor, and IMU, and is integrated into the bottom or underside of the drone to ensure an unobstructed field of view.

[0010] Preferably, the data processing unit utilizes a high-performance embedded chip (such as NVIDIA Jetson Nano or STM32H7 series) to process sensor data in real time, run positioning algorithms, and control logic.

[0011] Preferably, the communication module communicates with the ground terminal via Wi-Fi, Bluetooth, or a data radio to transmit positioning data and control commands (optionally, for manual intervention).

[0012] Preferably, the actuator utilizes the UAV's motor, propeller, and servo motor to receive control commands and adjust the flight state.

[0013] Preferably, the marker is a QR code (size optional, such as 30cm×30cm) printed with a unique pattern or an AR tag made of reflective material, which is affixed to the landing platform (such as the ground, roof, or top of the delivery cabinet) as a reference point for visual positioning.

[0014] Preferably, the auxiliary lighting utilizes LED lights to illuminate the signage in low-light environments to enhance visual recognition stability.

[0015] Preferably, the device includes a landing platform, with four connecting sleeve blocks fixedly connected to the outer side of the landing platform. A support rod is slidably connected to the center of each of the four connecting sleeve blocks. A spring is fixedly connected to the bottom side of each of the four connecting sleeve blocks. The four springs are respectively fixedly connected to the four support rods. A placement groove is provided at the center of the top side of the landing platform, and a GPS locator is fixedly installed on the inner wall of the placement groove.

[0016] Preferably, multiple warning lights are fixedly installed on the outer side of the landing platform, and an external rechargeable battery is installed on the bottom side of the landing platform. All of the multiple warning lights are electrically connected to the external rechargeable battery.

[0017] Preferably, a rounded corner limiting ring is fixedly connected to the top side of the landing platform.

[0018] In summary, this application includes the following beneficial technical effects:

[0019] 1. This device, through multi-sensor fusion positioning and closed-loop control algorithms, can achieve centimeter-level precision landing in complex environments, effectively avoiding accidents such as drone collisions and rollovers caused by landing deviations.

[0020] 2. This device completely eliminates its reliance on GPS by combining technologies such as visual positioning (recognizing QR codes / AR tags) and lidar (constructing 3D terrain), enabling drones to play a role in more scenarios.

[0021] 3. The device's fully automated control (from approach to landing to ground shutdown of the motor without human intervention) significantly reduces reliance on professional operators. Attached Figure Description

[0022] Figure 1 This is a top view schematic diagram of a precision landing device for a drone according to an embodiment of this application;

[0023] Figure 2 This is a top-view structural diagram of a precision landing device for a drone according to an embodiment of this application.

[0024] Explanation of reference numerals in the attached diagram: 1. Landing platform; 2. Connecting sleeve; 3. Support rod; 4. Spring; 5. GPS locator; 6. Warning light; 7. Rounded corner limit ring. Detailed Implementation

[0025] The following will be combined with the appendix Figure 1-2 The technical solutions of the present invention have been clearly and completely described. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] This application discloses a precision landing device for a drone, referring to... Figure 1-2 It includes the drone end and the landing point end, and the drone end and the landing point end each include the following components:

[0027] S1: The UAV terminal includes: sensor module, data processing unit, communication module and actuator;

[0028] S2: The landing point end includes: markers and auxiliary lighting structures.

[0029] In this application, the sensor module utilizes a high-definition camera, LiDAR, ultrasonic sensor, and IMU, integrated into the bottom or underside of the drone to ensure an unobstructed field of view.

[0030] In this application, the data processing unit utilizes high-performance embedded chips such as NVIDIA Jetson Nano and STM32H7 series to process sensor data in real time, run positioning algorithms and control logic.

[0031] In this application, the communication module communicates with the ground terminal via Wi-Fi, Bluetooth, or a data radio, and optionally transmits positioning data and control commands for manual intervention.

[0032] In this application, the actuator utilizes the motor, propeller, and servo motor of the UAV to receive control commands and adjust the flight status.

[0033] In this application, the marker is an AR tag with a uniquely printed QR code of optional size, such as 30cm×30cm or made of reflective material, which is affixed to the landing platform, such as the ground, roof, or top of the delivery cabinet, as a reference point for visual positioning.

[0034] In this application, the auxiliary lighting utilizes LED lights to illuminate the signage in low-light environments to enhance visual recognition stability.

[0035] This application includes a landing platform 1, with four connecting sleeves 2 fixedly connected to the outer side of the landing platform 1. Support rods 3 are slidably connected to the center of each of the four connecting sleeves 2, and springs 4 are fixedly connected to the bottom of each of the four connecting sleeves 2. The four springs 4 are respectively fixedly connected to the four support rods 3. A placement groove is provided at the center of the top side of the landing platform 1, and a GPS locator 5 is fixedly installed on the inner wall of the placement groove. By setting the springs 4, the UAV can use the sensor module, data processing unit, and communication module in conjunction with GPS to locate its landing position, enabling accurate judgment of the landing position. Furthermore, during the landing process, the locator on the landing platform can provide real-time position feedback, facilitating real-time position adjustments for the UAV during landing. Simultaneously, at the moment of contact, the four springs 4 cooperate with each other, utilizing the characteristic of repeated resonance to counteract the inertia generated by the UAV's landing. At the same time, the friction between the support rods 3 and the connecting sleeves 2 can generate damping force, gradually suppressing spring resonance until the situation becomes stable.

[0036] In this application, multiple warning lights 6 are fixedly installed on the outer side of the landing platform 1, and an external rechargeable battery is installed on the bottom side of the landing platform 1. The multiple warning lights 6 are all electrically connected to the external rechargeable battery. By setting up the warning lights 6, the multiple warning lights 6 can cooperate with each other to increase the brightness near the landing position, thereby improving the accuracy of the landing position positioning, and at the same time, it can facilitate people to observe the drone landing in real time.

[0037] In this application, a rounded corner limiting ring 7 is fixedly connected to the top side of the landing platform 1. By setting the rounded corner limiting ring 7, the drone will inevitably land at a certain tilt angle. At this time, the drone will generate a certain side slip inertia. Therefore, the rounded corner limiting ring 7 can prevent the drone from falling off the landing platform 1 when it sideslips, thereby providing a certain degree of protection for the drone when it lands.

[0038] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0039] The implementation principle of a precise landing device for a drone according to an embodiment of this application is as follows: During use, the drone can use a sensor module, a data processing unit, and a communication module in conjunction with GPS to locate its landing position, enabling precise judgment of the landing position. During the landing process, the locator on the landing platform can provide real-time position feedback, facilitating real-time position adjustment for the drone. Simultaneously, at the moment of contact, four springs 4 work together to counteract the inertia generated by the drone's landing through repeated resonance. Meanwhile, the friction between the support rod 3 and the connecting sleeve 2 generates damping force, gradually suppressing spring resonance until it becomes stable. Multiple warning lights 6 work together to increase the brightness near the landing position, thereby improving the accuracy of the landing position and facilitating real-time observation of the drone's landing. During landing, the drone inevitably lands at a certain angle, generating some sideslip inertia. Therefore, the rounded corner limiting ring 7 prevents the drone from detaching from the landing platform 1 during sideslip, thus providing some protection during landing.

[0040] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0041] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

Claims

1. A precision landing device for a drone, comprising a drone end and a landing point end, characterized in that, The UAV terminal and the landing point terminal each include the following components: S1: The UAV terminal includes: a sensor module, a data processing unit, a communication module, and an actuator; S2: The landing point includes: markers and auxiliary lighting structures.

2. The precision landing device for a drone according to claim 1, characterized in that: The sensor module utilizes a high-definition camera, LiDAR, ultrasonic sensor, and IMU, integrated into the bottom or underside of the drone to ensure an unobstructed field of view.

3. The precision landing device for a drone according to claim 1, characterized in that: The data processing unit utilizes a high-performance embedded chip (such as NVIDIA Jetson Nano or STM32H7 series) to process sensor data in real time, run positioning algorithms, and control logic.

4. The precision landing device for a drone according to claim 1, characterized in that: The communication module communicates with the ground terminal via Wi-Fi, Bluetooth, or a data radio to transmit positioning data and control commands (optional, for manual intervention).

5. A precision landing device for a drone according to claim 1, characterized in that: The actuator utilizes the drone's motor, propeller, and servo motor to receive control commands and adjust its flight status.

6. The precision landing device for a drone according to claim 1, characterized in that: The markers are QR codes (size optional, such as 30cm×30cm) printed with unique patterns or AR tags made of reflective material, which are affixed to the landing platform (such as the ground, roof, or top of the delivery cabinet) as reference points for visual positioning.

7. A precision landing device for a drone according to claim 1, characterized in that: The auxiliary lighting utilizes LED lights to illuminate the signage in low-light environments, enhancing visual recognition stability.

8. A precision landing device for a drone according to claim 1, comprising a landing platform (1), characterized in that: Four connecting sleeves (2) are fixedly connected to the outside of the landing platform (1). Support rods (3) are slidably connected to the center of each of the four connecting sleeves (2). Springs (4) are fixedly connected to the bottom of each of the four connecting sleeves (2). The four springs (4) are fixedly connected to the four support rods (3) respectively. A placement groove is provided at the center of the top side of the landing platform (1). A GPS locator (5) is fixedly installed on the inner wall of the placement groove.

9. A precision landing device for a drone according to claim 8, characterized in that: Multiple warning lights (6) are fixedly installed on the outside of the landing platform (1), and an external rechargeable battery is installed on the bottom side of the landing platform (1). The multiple warning lights (6) are electrically connected to the external rechargeable battery.

10. A precision landing device for a drone according to claim 8, characterized in that: The top side of the landing platform (1) is fixedly connected to a rounded corner limiting ring (7).

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