Ducted flight life raft

Abstract

The present application relates to a kind of ducted flight lifebuoy, belong to the technical field of aircraft, comprising: framework system, using lifebuoy structure design, with water surface floating capacity;Power and electric power system, including multiple circumferential uniform distribution along the framework system's ducted fan, ducted fan is all wrapped by duct structure, each ducted fan;Flight control system, independently adjust each described ducted fan to control flight attitude;Communication system, for receiving external control instruction and / or sending lifebuoy state information.The present application can solve the collision safety hidden trouble that exists when exposed high-speed rotor approaches the person falling into water, improve reliability, overcome the defects that four power points layout is low in redundancy, single failure is prone to cause out of control crash;And improve the problem of insufficient attitude control stability in complex environment such as wind and wave.

Description

Technical Field

[0001] This invention belongs to the field of aircraft technology, and in particular relates to a ducted flight lifebuoy that also has the function of floating on water. Background Technology

[0002] With the development of unmanned intelligent rescue equipment, flying lifebuoy products combining multi-rotor drones and lifebuoys have appeared on the market. However, almost all existing products use a quadcopter configuration as their flight propulsion solution. While this technology is relatively mature, it has gradually revealed the following inherent defects in the complex application scenarios of actual water rescue:

[0003] First, there are significant safety concerns. The quadcopter's propellers are fully exposed and rotate at high speed, making it highly susceptible to collisions when the aircraft approaches a panicked person in the water, causing secondary injuries and limiting its safe use in close-range rescue scenarios.

[0004] Secondly, the system lacks reliability and fault tolerance. The quadcopter configuration relies on only four independent power points to maintain flight attitude and stability. If any one of the motors or blades fails due to collision or malfunction, the aircraft will immediately lose balance, leading to the failure of the rescue mission or even the crash of the equipment. This risk is particularly prominent in harsh environments such as wind and waves.

[0005] Furthermore, the precision and anti-interference capabilities of flight control face challenges. Quadrotors achieve all attitude control by adjusting the rotation speed of only four power units, resulting in limited control freedom. When facing gusts and turbulence common on the water surface, the finesse and response speed of their attitude adjustment may be insufficient, affecting their ability to achieve precise and stable hovering and operations above the landing point.

[0006] Therefore, existing quadcopter-based flying lifebuoys have limitations in terms of safety during close-range operations, reliability of system power redundancy, and precise controllability in complex environments. These limitations have become technical problems that urgently need to be solved to improve the combat effectiveness of intelligent rescue equipment. Summary of the Invention

[0007] In view of the shortcomings of existing technologies, the present invention provides a ducted flight lifebuoy that can provide safer and more reliable water rescue delivery.

[0008] A ducted flight lifebuoy, comprising:

[0009] The frame system adopts a lifebuoy structure design and has the ability to float on the water surface;

[0010] The power and electrical system includes a plurality of ducted fans evenly distributed circumferentially along the frame system, each ducted fan being enclosed by a duct structure;

[0011] The flight control system independently adjusts each of the ducted fans to control the flight attitude;

[0012] A communication system for receiving external control commands and / or sending lifebuoy status information.

[0013] Multiple ducted fans are arranged with alternating forward and reverse propellers, and the forward and reverse propellers work together to balance angular momentum.

[0014] The frame system includes a lifebuoy body, specifically an upper shell and a lower shell, which are sealed and fastened together to form an annular buoyancy cavity; the joint surfaces of the upper and lower shells are evenly distributed with multiple corresponding concave and convex structural connection positions along the circumferential direction, which are sealed by seals and fastened by fasteners.

[0015] The frame system is equipped with a ventilation structure to balance the internal and external air pressure of the sealed cavity and prevent condensation.

[0016] The frame system also includes a central support plate made of high-strength lightweight composite material, the main body of which is adapted to the body of the lifebuoy; the central support plate is provided with through holes and mounting positions for installing internal functional modules and laying cables, and the central support plate is rigidly connected to the upper shell and / or lower shell through circumferentially distributed connection points.

[0017] The power and electrical system includes at least two batteries that are evenly distributed circumferentially along the frame system. The batteries are fixed radially and axially by a limiting structure to ensure stability under complex motion conditions.

[0018] The power and electrical system also includes a distribution board, an on / off control switch, and a charging module; multiple batteries are connected in parallel to the distribution board through their own independent on / off control switches, and the charging module integrates multiple independent charging ports; the interface of the on / off control switch and the charging port of the charging module are centrally installed on the interface cover, and the interface cover is sealed to the upper shell.

[0019] Each of the ducted fans is equipped with an individual electronic speed controller, and multiple controllers are symmetrically distributed and fixed to the central support plate, which, together with the battery layout, achieves radial symmetrical weight balance of the equipment.

[0020] The communication system includes a receiver, an image transmission module, a data transmission module, and a visual acquisition device. The visual acquisition device is installed on the side of the frame system facing the water surface and is electrically connected to the image transmission module. It is used to acquire real-time images of the water surface and transmit them back to the ground control terminal. The data transmission module sends equipment status data to the ground station.

[0021] The system employs a control method that combines manual remote control with ground station monitoring, and the data transmission module operates continuously throughout the entire operation.

[0022] By employing the above technical solution, the present invention has at least the following beneficial effects:

[0023] This invention eliminates the risk of collision or cuts to those falling into the water caused by exposed high-speed propeller blades by employing multiple ducted fans as power units, thus improving reliability and allowing the lifebuoy to safely approach and reach the panicked rescuer. Simultaneously, the multiple power points provide greater power redundancy, maintaining controllable flight even in the event of a single fan failure, overcoming the shortcomings of the four-power-point layout, which suffers from low redundancy and is prone to loss of control and crashes due to a single failure. Furthermore, the multi-power-point control is more precise and stable, improving the inadequacy of attitude control stability in complex environments such as wind and waves.

[0024] This invention uses six ducted fans as its core power source, integrating various structural, power, control, and power distribution components to achieve flight functionality. Specifically, it includes a frame system, propellers (both positive and negative), an electronic speed controller, a power distribution board, pluggable switches, batteries, and a flight control system. Together, these constitute a six-ducted multi-rotor flight platform, integrated with the lifebuoy structure and sensing equipment, and working in conjunction with the onboard control system. This six-ducted multi-rotor flight platform differs from the traditional quadcopter layout with exposed blades and is the core carrier for enabling the ducted-fan lifebuoy to fly, maneuver, hover, and deliver precisely.

[0025] The GPS device and downward-looking camera in this invention are the core components for realizing the location positioning, environmental visual perception, and flight status detection of the lifebuoy in this ducted flight, providing data support for flight control and precise rescue.

[0026] The multi-rotor flight platform works in conjunction with sensing equipment, a flight control board, and communication components such as receivers and data transmission modules to receive external control commands and provide feedback on flight status. It also incorporates a lifebuoy structure (i.e., the annular buoyancy cavity and watertight sealing structure of the frame system), achieving a deep integration of the drone's rapid maneuverability and the lifebuoy's floating rescue function. It can achieve rapid aerial approach and precise delivery, and is suitable for various complex emergency rescue scenarios such as floods, sea areas, nighttime, and stormy conditions. Attached Figure Description

[0027] Figure 1 A schematic diagram of the overall structure of a ducted flight lifebuoy provided by the present invention;

[0028] Figure 2 A top view of a ducted flight lifebuoy provided for this invention;

[0029] Figure 3 A bottom view of a ducted flight lifebuoy provided for this invention;

[0030] Figure 4An exploded view of a ducted flight lifebuoy provided for this invention;

[0031] Figure 5 A schematic diagram of the internal structure of a ducted flight lifebuoy provided by the present invention;

[0032] Figure 6 This is a schematic diagram of the central support plate in this invention;

[0033] Figure 7 This is a front view of the lower housing in this invention (A in the figure is the installation position of the downward-facing camera).

[0034] Figure 8 This is a rear view of the lower housing in this invention;

[0035] Figure 9 This invention provides a schematic diagram of the internal module distribution. Figure 1 ;

[0036] Figure 10 This invention provides a schematic diagram of the internal module distribution. Figure 2 ;

[0037] In the picture:

[0038] 11. Propeller; 12. Counter-propeller; 13. Battery; 14. Power distributor; 15. Electronic speed controller; 16. Breath plug; 17. Plug-in switch; 18. Charging module; 21. Flight controller board; 22. GPS device; 31. Receiver; 32. Image transmission module; 33. Data transmission module; 34. Downward-facing camera; 41. Lower housing; 42. Center support plate; 43. Upper housing; 44. Battery mounting bracket; 45. Support plate; 46. GPS support plate; 47. GPS connector; 48. Support plate connector; 49. Battery support plate; 410. Battery support column; 411. Interface cover. Detailed Implementation

[0039] To better explain and facilitate understanding of the present invention, the technical solution and effects of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] like Figures 1-10 As shown, a ducted flight lifebuoy includes a power and electrical system, a flight control system, a communication system, and a frame system.

[0041] The frame system serves as the basic structure of the integrated ducted flight lifebuoy, employing a lifebuoy design to provide stable buoyancy for those who fall into the water. Specifically, the frame system includes an upper shell 43, a lower shell 41, a central support plate 42, a battery mounting bracket 44, a support plate 45, a GPS support plate 46, a GPS connecting column 47, a support plate connecting column 48, a battery support plate 49, a battery support column 410, and an interface cover plate 411. The upper shell 43 and lower shell 41 are sealed together, forming the sealed structure of the entire frame system. Preferably, the upper shell 43 and lower shell 41 are made of ABS engineering plastic and manufactured using an integrated injection molding process, forming a sealed annular buoyancy cavity.

[0042] Specifically, to achieve a reliable watertight seal, the mating surfaces of the upper housing 43 and the lower housing 41 are provided with mutually matching sealing structures. Specifically, the edge of the mating surface of the upper housing 43 has a boss; correspondingly, the edge of the mating surface of the lower housing 41 has a groove matching the shape of the boss. During assembly, a sealing strip is embedded in the groove, and the boss of the upper housing 43 is aligned and pressed into the groove of the lower housing 41, ensuring a tight fit between the mating surfaces. The upper housing 43 and the lower housing 41 achieve a preliminary seal through the splicing and fitting of the boss and groove, and the compression deformation of the sealing ring.

[0043] Preferably, to provide a robust mechanical connection and ensure sealing pressure, multiple connection positions are evenly distributed circumferentially along the edge of the joint between the upper housing 43 and the lower housing 41. At each connection position, a reinforcing boss is designed inside both the upper housing 43 and the lower housing 41. Furthermore, an internally threaded copper post is pre-embedded in the reinforcing boss of the upper housing 43 during injection molding, and a corresponding connection hole is provided on the lower housing 41. When fastening the upper housing 43 and the lower housing 41, a screw is inserted through the corresponding connection hole on the outside of the lower housing 41 and screwed into the pre-embedded threaded copper post in the upper housing 43, thereby achieving a tightening and fixing of the two from bottom to top. This fastening method facilitates assembly, provides high connection strength, and ensures the stability of the sealing structure under long-term use and hydraulic pressure conditions.

[0044] The central support plate 42, serving as a support structure for the internal modules, is located within the sealed housing formed by the upper housing 43 and the lower housing 41. The main modules of the power and electrical systems, flight control systems, and communication systems are integrated and installed on the central support plate 42. The central support plate 42 is made of carbon fiber composite material to achieve lightweighting while ensuring high structural rigidity. Specifically, the main shape of the central support plate 42 is an annular shape adapted to the body of the lifebuoy. The central support plate 42 has multiple irregularly shaped through holes and mounting positions for installing other internal functional modules such as power, flight control, and communication modules, while also facilitating cable routing and reducing overall weight.

[0045] Furthermore, the central support plate 42 is rigidly connected to the lower housing 41 through multiple connection points distributed along its periphery. Specifically, on the inner bottom surface of the lower housing 41, corresponding to the positions of the connection points, upwardly protruding BOSS posts are integrally formed. During installation, the central support plate 42 is fitted onto the BOSS posts of the lower housing 41, and then self-tapping screws are screwed into the BOSS posts from above the central support plate 42, thereby fastening the central support plate 42 to the lower housing 41. After the central support plate 42 is installed, when locking the upper housing 43 and the lower housing 41, the reinforcing BOSS posts of the upper housing 43 first pass through the corresponding through holes reserved on the central support plate 42, and then seal and connect with the lower housing 41. This design ensures that when tightening the fastening screws of the upper housing 43 and the lower housing 41, the reinforcing BOSS posts not only connect the upper and lower housings, but also provide radial restraint for the central support plate 42, playing an auxiliary fixing role and enhancing the integration and stability of the overall structure. The central support plate 42 allows the battery 13 of the power module to pass through it for installation, and this layout is key to achieving radial symmetry balancing of the equipment.

[0046] Similarly, the central support plate 42 is rigidly connected to the upper shell 43 through multiple connection points distributed along its periphery, while the remaining connection structures and connection methods remain unchanged, thus realizing a modular layout.

[0047] The power and electrical system is the core drive and energy unit of the entire ducted flight lifebuoy, including a ducted fan, battery 13, power distribution board 14, electronic speed controller 15, vent plug 16, plug-in switch 17 and charging module 18.

[0048] In terms of power layout and installation, the entire power and electrical system comprises six ducted fans, serving as the driving components for flight maneuvers, evenly distributed circumferentially along the frame system. All fans are encased in ductwork, a design that fundamentally eliminates the risk of injury to those falling into the water from exposed blades, significantly improving safety for close-range operations. Each ducted fan is equipped with an individual electronic speed controller 15, which adjusts the speed difference between the ducted fans to change thrust, thereby controlling the flight attitude and heading of the ducted flight lifebuoy. Using the positive direction on the flight control board 21 as a reference, the six ducted fans are sequentially arranged clockwise as follows: ducted fans 1, 2, 3, 4, 5, and 6. Ducted fans 1, 3, and 5 are positive rotors 11, while ducted fans 2, 4, and 6 are negative rotors 12, thus achieving an alternating arrangement of positive and negative rotors 11 to balance angular momentum. Furthermore, the upper housing 43 and the lower housing 41 each have a through channel corresponding to the position of each ducted fan. During installation, the outer casing of the ducted fan passes through the through channel between the upper housing 43 and the lower housing 41, and is secured by bolts connected to the lower housing 41 using the pre-set mounting clips on the outer wall of the ducted fan, ensuring a rigid connection between the power unit and the main structure.

[0049] Furthermore, in terms of power supply and installation, the power module consists of three batteries 13, which are also evenly distributed circumferentially along the frame system. During installation, each battery 13 passes sequentially through the corresponding irregular through-hole on the central support plate 42 and is placed on an independent battery support plate 49. The battery support plate 49 is fixed to the lower part of the central support plate 42 by battery support columns 410. After the battery 13 is in place, the battery fixing bracket 44 clamps it from above, thereby achieving radial and axial limitation of the battery 13 and ensuring its stability under complex movement conditions.

[0050] Furthermore, in terms of circuit connection and charging safety design, the electrodes of each battery 13 are connected to two nodes via wires: one node is the charging interface, and the other node is the power distribution board 14, which distributes power to the electronic speed controllers 15 driving the ducted fan and other power modules. The power distribution board 14 is bolted to the support plate 45, and the support plate 45 is connected to the central support plate 42 via support plate connecting posts 48. A pluggable switch 17 is connected in series on each wire connected to the power distribution board 14. The three batteries 13 are connected in parallel to the power distribution board 14 via their respective independent pluggable switches 17, and the power distribution board 14 provides unified power to the six electronic speed controllers 15 and other equipment. The six electronic speed controllers 15 are arranged in pairs, each pair at 120° to the back of the central support plate 42, and bolted together. This symmetrical layout, combined with the installation method of the batteries 13 passing through the central support plate 42, optimizes the weight distribution of the equipment, laying a physical foundation for stable flight. The charging module 18 is mounted on the upper housing 43 and integrates three independent charging ports for simultaneously charging three batteries 13. To achieve safe, physically isolated charging, all three plug-in switches 17 must be unplugged before charging, thereby completely disconnecting the batteries 13 from the power distribution board 14 and downstream electrical equipment, thus completely eliminating the safety hazards of direct charging in parallel circuits.

[0051] Regarding the integration and sealing of external interfaces, the interface sockets of the three pluggable switches 17 and the charging port of the charging module 18 are all centrally mounted and fixed on the interface cover plate 411 on the upper housing 43. The upper housing 43 has maintenance openings corresponding to the positions of the interface cover plates 411. The interface cover plates 411 are also manufactured using injection molding. Internally threaded posts are pre-embedded at the installation positions of each interface cover plate 411 on the upper housing 43. During installation, a sealing ring is placed between the interface cover plate 411 and the upper housing 43, and then screws are used to fasten the interface cover plate 411 to the pre-embedded internally threaded posts. The sealing principle between the interface cover plate 411 and the upper housing 43 is the same as the connection method between the upper housing 43 and the lower housing 41, ensuring the watertightness of each independent maintenance opening, while simultaneously enabling independent, rapid, and waterproof replacement and charging of the battery 13.

[0052] Preferably, the frame system is provided with a vent plug 16, specifically located on the upper housing 43, to balance the air pressure inside and outside the sealed cavity formed by the upper housing 43 and the lower housing 41, which houses the battery 13 and the electronic speed controller 15, and to prevent condensation.

[0053] The communication system, used to receive external control commands and / or send status information, includes a receiver 31, an image transmission module 32, a data transmission module 33, and a downward-facing camera 34. The receiver 31, image transmission module 32, and data transmission module 33 are mounted on the central support plate 42. To enhance the accuracy and intuitiveness of the rescue process, the downward-facing camera 34 is mounted on the lower housing 41 and bolted to it. It is electrically connected to the image transmission module 32. The real-time images captured by the downward-facing camera 34 can be transmitted back to the ground control terminal via the image transmission module 32, allowing the operator to clearly observe the water surface below, thereby achieving accurate identification of the landing point and precise guidance and delivery of the lifebuoy. The data transmission module 33 is the core data transmission component of the communication system. Its function is to transmit various key status data of the ducted flight lifebuoy to the ground terminal, providing core data support for ground station monitoring, and providing data basis for real-time monitoring of the rescue process and subsequent trajectory planning. The data transmission module 33 transmits various operational and flight-related status data of the ducted flight lifebuoy, specifically including flight attitude, altitude, hovering position, and other flight status data calculated by the flight control board 21; spatial positioning data collected by the GPS device 22; and equipment operation data such as battery level 13, ducted fan speed, and the operating status of each power module. As an airborne data transmitter, the data transmission module 33 transmits these various data types to the ground station software, completing the status data transmission from the airborne end of the ducted flight lifebuoy to the ground control end.

[0054] The flight control system includes a flight control board 21 and a GPS device 22 electrically connected to the flight control board 21. The flight control board 21 is fixed on an independent support plate 45, which is connected to the central support plate 42 via a support plate connecting column 48. The GPS device 22 is mounted on a GPS support plate 46 on the central support plate 42 and is elevated via a GPS connecting column 47 to optimize signal reception. The flight control board 21, as the core processor of the entire lifebuoy, receives remote control commands from the receiver 31. The flight control board 21 integrates an inertial measurement unit (including a three-axis gyroscope and a three-axis accelerometer), a barometric altimeter, an angular velocity sensor, and other flight status sensors. These sensors are built-in integrated sensing components of the flight control board 21, capable of real-time and autonomously acquiring core physical parameters of the ducted flight lifebuoy, such as flight attitude, spatial angular velocity, flight altitude, and acceleration. The raw data from these sensors is directly transmitted to the core processing unit of the flight control board 21 to complete the sensor data acquisition. Simultaneously, it acquires position information from the GPS device 22, calculates it using internal algorithms, generates control signals, and independently adjusts the speed of the six ducted fans. This independent adjustment of the ducted fan speed controls the flight attitude, thereby achieving stable and precise control of the aircraft.

[0055] This ducted-tube flying lifebuoy supports both manual remote control and ground station monitoring. The two modes operate simultaneously and in tandem. During manual remote control rescue, the data transmission module 33 operates continuously, ensuring simultaneous reception of control commands and transmission of status data. Manual remote control is the core operation mode. The operator sends flight control commands via receiver 31 through the remote controller. Real-time water surface images captured by the downward-facing camera 34 are simultaneously transmitted back to the ground display device via image transmission module 32, providing intuitive visual guidance for precise operator control and enabling core rescue actions such as takeoff, flight, hovering, and delivery of the lifebuoy. The ground station monitoring mode is fully integrated with the manual remote control mode. Various flight and equipment status data, such as the ducted-tube flying lifebuoy's flight attitude, position, battery level, and duct fan speed, are simultaneously transmitted to the ground station software in real time via data transmission module 33. This allows for real-time monitoring of the lifebuoy's overall operating status, providing data reference for manual remote control operations. It also allows for flight path planning via the ground station, similar to a conventional drone, and enables remote control from the ground station. Ground station monitoring serves as an auxiliary control method in manual remote control mode, and can also retain relevant status data for post-rescue trajectory review and subsequent planning.

[0056] The workflow for the aforementioned ducted flight lifebuoy in actual rescue operations is as follows:

[0057] Upon locating a person in the water, rescuers place the ducted flying lifebuoy on the shore, boat, or other work platform. They first insert three pluggable switches 17 sequentially to connect the power supply to the entire system. At this time, the communication system, flight control system, and power and electrical systems simultaneously enter working mode. Manual remote control and ground station monitoring modes are activated simultaneously, and the data transmission module 33 and image transmission module 32 remain operational throughout. Rescuers hold the remote control and observe the water surface image captured by the downward-facing camera 34 and transmitted in real-time via the image transmission module 32 on the remote control's display screen, using this as visual guidance. After issuing the takeoff command, this command is transmitted via receiver 31 to the flight control board 21. The flight control board 21 drives the six ducted fans, evenly distributed circumferentially, to synchronously and uniformly increase their rotation speed, ensuring that the total thrust generated by the six ducted fans exceeds the lifebuoy's own weight, thus achieving vertical takeoff of the lifebuoy.

[0058] As the lifebuoy flies towards the area where the person fell into the water, the operator sends control commands such as heading, pitch, and roll via the remote controller. After receiving the commands, the flight control board 21 combines the data collected by the internally integrated sensors and the real-time position information transmitted by the GPS device 22. After processing by the internal algorithm, it performs differential speed adjustment on the six ducted fans distributed clockwise with its positive direction as the reference. By changing the speed of the fans in different positions, a thrust difference is formed, thereby realizing various flight maneuvers. The specific adjustment logic is as follows: During pitch movement, the speed of the No. 1 and No. 6 fans in front and the No. 3 and No. 4 fans in the rear are adjusted, with the front and rear increasing and decreasing in opposite directions. The No. 5 and No. 2 fans perform angular momentum balance compensation, forming a thrust difference between the front and rear to achieve pitch; During roll movement, the speed of the No. 6, No. 5, and No. 4 fans on the left and the No. 1, No. 2, and No. 3 fans on the right are adjusted, forming a thrust difference between the left and right to achieve roll; During yaw movement, the overall speed of the positive propeller 11 and the negative propeller 12 is adjusted in the same direction to form a torque difference, thereby achieving heading change while ensuring that the total thrust remains unchanged. Based on the real-time image transmitted back by the image transmission module 32, the operator clearly identifies the location of the fall into the water and sends a fine-tuning command. The flight control board 21 performs precise dynamic differential speed adjustment on the six ducted fans. In response to the interference direction of gusts and turbulence on the water surface, the fan speed in the corresponding direction is increased or decreased slightly to counteract the force and torque generated by external interference in real time, so that the lifebuoy is accurately hovered directly above the person who has fallen into the water.

[0059] Subsequently, the operator sends a descent command, and the flight control board 21 drives the six ducted fans to synchronously and uniformly reduce their speed, so that the total thrust is slightly less than the weight of the lifebuoy itself, allowing the lifebuoy to descend smoothly and vertically to the water surface. After the person in the water grasps the ring-shaped buoyancy body, i.e., the frame system, the lifebuoy can rely on its own buoyancy to provide support for the person in the water. At this time, the lifebuoy can remain on the water surface as a floating platform.

[0060] Throughout the process, GPS device 22 provides location information, and data transmission module 33 can send key status data back to the ground station for monitoring and recording. The key status data specifically includes flight status data (real-time GPS positioning coordinates, flight altitude, flight speed, hovering position coordinates, roll / pitch / heading and other flight attitude parameters), power and electrical system operating data (real-time speed of the six ducted fans, operating status and output parameters of the six electronic speed controllers 15), electrical system data (remaining charge and real-time voltage of the three batteries 13), sensor data (acceleration, spatial angular velocity, and ambient air pressure data collected by the inertial measurement unit built into the flight control board 21 and the barometric altimeter), and overall aircraft operating data (operating status of each electrical component, signal strength of the communication system). The ground station can simultaneously view various status data and can also serve as an auxiliary control terminal to complete trajectory planning or remote control operations. This process fully integrates rapid air arrival, precise visual guidance, reliable water surface afloat, and other capabilities, achieving efficient rescue.

Claims

1. A ducted flight lifebuoy, characterized in that, include: The frame system adopts a lifebuoy structure design and has the ability to float on the water surface; The power and electrical system includes a plurality of ducted fans evenly distributed circumferentially along the frame system, each ducted fan being enclosed by a duct structure; The flight control system independently adjusts each of the ducted fans to control the flight attitude; A communication system for receiving external control commands and / or sending lifebuoy status information.

2. The ducted flight lifebuoy according to claim 1, characterized in that: Multiple ducted fans are arranged with alternating forward and reverse propellers, and the forward and reverse propellers work together to balance angular momentum.

3. The ducted flight lifebuoy according to claim 1, characterized in that: The frame system includes a lifebuoy body, specifically an upper shell and a lower shell, which are sealed and fastened together to form an annular buoyancy cavity; the joint surfaces of the upper and lower shells are evenly distributed with multiple corresponding concave and convex structural connection positions along the circumferential direction, which are sealed by seals and fastened by fasteners.

4. The ducted flight lifebuoy according to claim 3, characterized in that: The frame system is equipped with a ventilation structure to balance the internal and external air pressure of the sealed cavity and prevent condensation.

5. A ducted flight lifebuoy according to claim 3, characterized in that: The frame system also includes a central support plate made of high-strength lightweight composite material, the main body of which is adapted to the body of the lifebuoy; the central support plate is provided with through holes and mounting positions for installing internal functional modules and laying cables, and the central support plate is rigidly connected to the upper shell and / or lower shell through circumferentially distributed connection points.

6. The ducted flight lifebuoy according to claim 1, characterized in that: The power and electrical system includes at least two batteries that are evenly distributed circumferentially along the frame system. The batteries are fixed radially and axially by a limiting structure to ensure stability under complex motion conditions.

7. A ducted flight lifebuoy according to claim 6, characterized in that: The power and electrical system also includes a distribution board, an on / off control switch, and a charging module; multiple batteries are connected in parallel to the distribution board through their own independent on / off control switches, and the charging module integrates multiple independent charging ports; the interface of the on / off control switch and the charging port of the charging module are centrally installed on the interface cover, and the interface cover is sealed to the upper shell.

8. A ducted flight lifebuoy according to claim 7, characterized in that: Each of the ducted fans is equipped with an individual electronic speed controller, and multiple controllers are symmetrically distributed and fixed to the central support plate, which, together with the battery layout, achieves radial symmetrical weight balance of the equipment.

9. A ducted flight lifebuoy according to claim 1, characterized in that: The communication system includes a receiver, an image transmission module, a data transmission module, and a visual acquisition device. The visual acquisition device is installed on the side of the frame system facing the water surface and is electrically connected to the image transmission module. It is used to acquire real-time images of the water surface and transmit them back to the ground control terminal. The data transmission module sends equipment status data to the ground station.

10. A ducted flight lifebuoy according to claim 9, characterized in that: The system employs a control method that combines manual remote control with ground station monitoring, and the data transmission module operates continuously throughout the entire operation.

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