An air-ground dual-wire folding optical fiber unmanned aerial vehicle

Abstract

The utility model relates to unmanned plane technical field discloses a kind of folding fiber-optic unmanned planes of air-ground double wire laying system, adopt air-ground double wire laying system, including ground wire drum, installation is in ground control station, for storing and releasing main fiber-optic line;Air wire drum, installation is in unmanned plane platform, for storing and releasing auxiliary fiber-optic line. With ground wire laying as main, with air wire laying as auxiliary;In normal state, fiber-optic is preferentially released from ground wire drum;In the fiber-optic release of ground wire drum is finished or meets ground obstacle and other special conditions, fiber-optic is released by air wire drum;Air-ground double wire laying system is mutual guarantee, reduce single-point failure risk, adapt complex terrain and obstacle environment;The total length of fiber-optic is the fiber-optic length of ground wire drum plus the fiber-optic length of air wire drum, transmission distance is farther.The folding fiber-optic unmanned plane of the utility model in combination with air-ground double wire laying technology has wide application prospect in military reconnaissance, power inspection, emergency rescue and other fields.

Description

Technical Field

[0001] This utility model belongs to the field of unmanned aerial vehicle (UAV) technology, specifically, it relates to a foldable fiber optic UAV with an air-to-ground dual-line system. Background Technology

[0002] Foldable fiber optic drones are drone platforms that use optical fiber as the data transmission medium. Their advantages include strong anti-interference capabilities, low latency, and high transmission bandwidth. Bidirectional data transmission between the drone platform and the ground control station is achieved through optical fiber, which is folded and stored in an optical fiber tube, connecting the drone platform and the ground control station. Because optical fiber avoids the interference susceptibility of traditional radio signals, data exchange between the drone platform and the ground control station is more stable.

[0003] For existing foldable fiber optic drones, the problem is: how to set the position of the fiber optic tube.

[0004] If the fiber optic tube is placed on the ground, the advantage is that the fiber optic cable is released from the ground end, reducing the weight of the drone. The disadvantage is that because the fiber optic cable is released from the ground, there is pulling on the fiber optic cable. If it encounters ground obstacles, such as forests, cities, or other complex terrain, the fiber optic cable can easily get tangled in the obstacles. At this time, because the drone is pulling on the fiber optic cable, it can easily break.

[0005] If the fiber optic tube is placed on the drone platform, its advantages are that the fiber optic cable is released from the drone end, which will not pull on the ground fiber optic cable and the fiber optic cable is not easy to break; the disadvantages are that the longer the fiber optic cable inside the fiber optic tube, the heavier the fiber optic tube will be. Due to the limitations of the drone's payload and endurance, the airborne fiber optic tube cannot be too heavy, and the amount of fiber optic cable carried is limited, which limits the communication distance.

[0006] In summary, for foldable fiber optic drones, there are certain problems regardless of whether the fiber optic tube is placed on the ground or on the drone platform, necessitating a technical solution that combines the advantages of both. Therefore, this utility model is proposed. Utility Model Content

[0007] To address the problems of existing foldable fiber optic drones, which are sensitive to environmental conditions and prone to tangling in complex terrain when the fiber optic tube is placed on the ground, while having weight limitations when placed on the drone platform, and the increased weight and reduced flight time of long-distance fiber optic cables, this invention provides a foldable fiber optic drone with a highly reliable, flexible, and long-distance air-to-ground dual-layout system.

[0008] The basic concept of the technical solution adopted in this utility model is: The foldable fiber optic UAV with air-to-ground dual-line system includes: Unmanned aerial vehicle (UAV) platforms and ground control stations; The ground reel, installed at the ground control station, is used to store and release the main fiber optic line; one end of the main fiber optic line is connected to the ground control station signal, and the other end is released by the release end of the ground reel and connected to the release end of the aerial reel. An aerial reel, installed on a drone platform, is used to store and release auxiliary fiber optic lines. One end of the auxiliary fiber optic line is connected to the drone platform signal, and the other end is released from the aerial reel's release end and connected to the ground reel's release end.

[0009] In a preferred embodiment of this utility model, the length of the main optical fiber line stored in the ground tube is greater than the length of the auxiliary optical fiber line stored in the air tube.

[0010] In a preferred embodiment of this utility model, under the condition that no external force is applied, the wire feeding resistance at the wire feeding end of the aerial spool is greater than the wire feeding resistance at the wire feeding end of the ground spool.

[0011] In a preferred embodiment of this utility model, when the main optical fiber line stored in the ground spool has been released, the release resistance of the release end of the ground spool is greater than the release resistance of the release end of the air spool.

[0012] In a preferred embodiment of this utility model, when the main optical fiber line released by the ground reel encounters an obstacle, the line release resistance at the line release end of the ground reel is greater than the line release resistance at the line release end of the aerial reel.

[0013] In a preferred embodiment of this utility model, the optical fiber is a high-strength optical fiber.

[0014] In a preferred embodiment of this invention, the surface of the optical fiber is coated with a self-healing coating.

[0015] In a preferred embodiment of this utility model, photoelectric conversion modules are installed between the main optical fiber line of the ground tube and the ground control station, and between the auxiliary optical fiber line of the aerial tube and the UAV platform, respectively, for optical / electric signal conversion.

[0016] In a preferred embodiment of this utility model, the wire-laying end of the ground spool and the wire-laying end of the overhead spool are respectively equipped with a resistance adjustment device to control the magnitude of the wire-laying resistance.

[0017] Compared with the prior art, the present invention has the following advantages: Strong anti-interference capability: This utility model uses optical fiber as the data transmission medium. Optical fiber transmission is not affected by the electromagnetic environment, and the data exchange between the UAV platform and the ground control station is more stable. It not only has strong anti-interference capability, but also has lower latency and higher transmission bandwidth.

[0018] High reliability and flexibility: This utility model adopts an air-ground dual-layout system. After the UAV takes off, ground-based layout is the primary method. Under normal conditions, the optical fiber is released from the ground reel first, which can reduce the weight of the UAV. Air-based layout is secondary. When the optical fiber in the ground reel is exhausted or in special circumstances, such as when the optical fiber encounters a ground obstacle, the optical fiber is released from the air reel. The air-ground dual-layout system provides mutual protection, which can reduce the risk of single-point failure and can adapt to complex terrain and obstacle environments.

[0019] Long transmission distance: This utility model adopts an air-ground dual-layout system. The total length of the optical fiber is the sum of the optical fiber length of the ground tube and the optical fiber length of the air tube. The total length of the optical fiber can be longer, and the transmission distance is longer.

[0020] With the continuous development of technology, this utility model of a foldable fiber optic UAV that combines dual-layout technology will show broader application prospects in fields such as military reconnaissance, power line inspection, and emergency rescue.

[0021] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model.

[0023] In the diagram: 1. Unmanned aerial vehicle platform; 2. Ground control station; 3. Ground cable reel; 4. Aerial cable reel; 5. Optical fiber. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0025] like Figure 1 As shown, this utility model provides a foldable fiber optic UAV with an air-to-ground dual-line system, comprising: Unmanned aerial vehicle platform 1 and ground control station 2; Ground cable reel 3, installed at ground control station 2, is used to store and release the main optical fiber line; one end of the main optical fiber line is connected to the signal of ground control station 2, and the other end is released by the cable release end of ground cable reel 3 and connected to the cable release end of aerial cable reel 4. The aerial reel 4, installed on the UAV platform 1, is used to store and release the auxiliary optical fiber line; one end of the auxiliary optical fiber line is connected to the signal of the UAV platform 1, and the other end is released by the release end of the aerial reel 4 and connected to the release end of the ground reel 3.

[0026] Furthermore, this utility model includes photoelectric conversion modules. There are two photoelectric conversion modules, one installed between one end of the main optical fiber line of the ground tube 3 and the ground control station 2, and the other between one end of the auxiliary optical fiber line of the aerial tube 4 and the UAV platform 1. The function of the photoelectric conversion modules is to realize the conversion of optical and electrical signals.

[0027] In this embodiment, the structure and principle of the photoelectric conversion module follow existing technology.

[0028] In this setup, the photoelectric conversion module functions as follows: Electrical signals from the UAV platform 1, such as video signals captured, are converted into optical signals by the photoelectric conversion module at the UAV end, transmitted to the ground end via optical fiber 5, and then converted into electrical signals that can be processed by the ground control station 2 by the photoelectric conversion module at the ground end; similarly, electrical signals issued by the ground control station 2, such as control commands to the UAV, are converted into optical signals by the photoelectric conversion module at the ground end, transmitted to the UAV end via optical fiber 5, and then converted into electrical signals that can be received by the UAV platform 1 by the photoelectric conversion module at the UAV end.

[0029] Furthermore, this utility model includes a resistance adjustment device. There are two resistance adjustment devices, one installed at the wire-laying end of the ground-based reel 3 and the other at the wire-laying end of the overhead reel 4. The function of the resistance adjustment device is to control the magnitude of the wire-laying resistance.

[0030] In this embodiment, the structure and principle of the resistance adjustment device follow existing technology. A sensing device can also be added to monitor the fiber tension in real time, thereby dynamically adjusting the size of the resistance adjustment devices at both ends of the air-to-ground structure. This resistance adjustment device achieves a resistance difference between the two ends, ensuring the fiber is always under appropriate tension.

[0031] In this setup, the resistance adjustment device operates as follows: when there is no external force, the wire release resistance at the wire release end of the aerial reel 4 is greater than the wire release resistance at the wire release end of the ground reel 3; when the main optical fiber line stored in the ground reel 3 has been released, or when the main optical fiber line released by the ground reel 3 encounters an obstacle, the wire release resistance at the wire release end of the ground reel 3 becomes greater than the wire release resistance at the wire release end of the aerial reel 4.

[0032] Furthermore, the length of the main optical fiber line stored in the ground cable spool 3 is greater than the length of the auxiliary optical fiber line stored in the air cable spool 4. The air-to-ground optical fiber ratio is configured as follows: ground-based cable laying is dominant, with approximately 70-80% of the optical fiber released from the ground; air-based cable laying serves as a supplement, with approximately 20-30% of the optical fiber released by the UAV.

[0033] In a specific implementation: The resistance adjustment device at the ground end adopts a low-friction bearing and tension control system to maintain a line-laying resistance of about 1~1.5N; multiple guide pulleys are set at the ground end to reduce friction; the maximum line-laying length of the ground spool 3 is 15-20km, the line-laying speed is 0.5-15m / s, the spool weight is 3-5kg, and the optical fiber diameter is 0.25-0.3mm.

[0034] The air end resistance adjustment device maintains a line-laying resistance of approximately 2.45N through a hysteresis clutch or friction braking device; the air end uses a low-resistance guide ring to prevent fiber optic kinking; the maximum line-laying length of the air spool 4 is 5-10km, the line-laying speed is 0.5-10m / s, the spool weight is 1.1-3.5kg, and the fiber diameter is 0.25-0.3mm.

[0035] Material optimization: Fiber 5 uses high-strength fiber, and the surface of fiber 5 is coated with a self-healing coating to reduce wear.

[0036] The principle of this utility model's air-to-ground dual-line laying system is as follows: The core lies in the control of cable release resistance: Under normal conditions, the cable release resistance of the aerial cable reel 4 is greater than that of the ground cable reel 3. At this time, the ground cable reel 3 is in cable release mode, and the ground cable reel 3 releases optical fibers stably. When all the optical fibers of the ground cable reel 3 have been released or when encountering ground obstacles or other special circumstances, the cable release resistance of the ground cable reel 3 exceeds that of the aerial cable reel 4, and the system switches to the cable release mode of the aerial cable reel 4.

[0037] Furthermore, the cable laying mode switching of the air-ground dual-layout system can also be based on other control conditions. For example, the fiber optic transmission quality can be monitored in real time. When the fiber optic transmission is normal, the ground reel 3 laying mode is used. When an abnormality in fiber optic transmission is detected, the system automatically switches from the ground reel 3 laying mode to the air reel 4 laying mode.

Claims

1. A foldable fiber optic UAV with an air-to-ground dual-line system, characterized in that, include: Unmanned aerial vehicle (UAV) platforms and ground control stations; Ground-based cable reels, installed at ground control stations, are used to store and release main fiber optic cables; One end of the main fiber optic line is connected to the ground control station signal, and the other end is released from the ground reel end and connected to the air reel end. An aerial reel, installed on a drone platform, is used to store and release auxiliary fiber optic lines. One end of the auxiliary fiber optic line is connected to the drone platform signal, and the other end is released from the aerial reel's release end and connected to the ground reel's release end.

2. The foldable fiber optic UAV with air-to-ground dual-line system according to claim 1, characterized in that, The length of the main optical fiber line stored in the ground-based cable is greater than the length of the auxiliary optical fiber line stored in the aerial cable.

3. The foldable fiber optic UAV with air-to-ground dual-line system according to claim 1, characterized in that, In the absence of external force, the wire feeding resistance at the wire feeding end of the aerial spool is greater than that at the wire feeding end of the ground spool.

4. The foldable fiber optic UAV with air-to-ground dual-line system according to claim 1, characterized in that, When the main optical fiber line stored in the ground spool has been released, the release resistance at the release end of the ground spool is greater than the release resistance at the release end of the air spool.

5. The foldable fiber optic UAV with air-to-ground dual-line system according to claim 1, characterized in that, When the main optical fiber line released by the ground reel encounters an obstacle, the line release resistance at the line release end of the ground reel is greater than the line release resistance at the line release end of the aerial reel.

6. The foldable fiber optic UAV with air-to-ground dual-line system according to claim 1, characterized in that, The optical fiber is a high-strength optical fiber.

7. The foldable fiber optic UAV with air-to-ground dual-line system according to claim 1, characterized in that, The surface of the optical fiber is coated with a self-healing coating.

8. The foldable fiber optic UAV with air-to-ground dual-line system according to claim 1, characterized in that, Photoelectric conversion modules are installed between the main optical fiber line of the ground tube and the ground control station, and between the auxiliary optical fiber line of the aerial tube and the UAV platform, respectively, for optical / electric signal conversion.

9. The foldable fiber optic UAV with air-to-ground dual-line system according to claim 1, characterized in that, The ground spool and the overhead spool are each equipped with a resistance adjustment device to control the amount of resistance during the line laying.

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