A water rescue drone lifebuoy device

Abstract

The application discloses a water rescue unmanned aerial vehicle life buoy device and relates to the technical field of water rescue.The device comprises a flight assembly and further comprises a life buoy body composed of four groups of extended life-saving split parts, wherein the flight assembly is arranged on the extended life-saving split parts; a gas storage and water pumping assembly storing compressed gas is arranged in the extended life-saving split parts; and a telescopic driving assembly is arranged in the extended life-saving split parts, and the two ends of the telescopic driving assembly are fixedly connected with two adjacent groups of the extended life-saving split parts, and the telescopic driving assembly drives the gas storage and water pumping assembly to drain water when the telescopic driving assembly is reset. Through linkage of the four groups of the extended life-saving split parts and the telescopic driving assembly, the life buoy body center hole is radially expanded and contracted, the device can be accurately sleeved and fixed at the waist and abdomen position without active cooperation of the person falling into water, and the problem that the rescue success rate is low due to the fact that the person falling into water is in panic, physical strength is overdrawn or consciousness is blurred and is difficult to actively cooperate is solved.

Description

Technical Field

[0001] This invention belongs to the field of water rescue technology, specifically, it relates to a water rescue drone lifebuoy device. Background Technology

[0002] With the continuous improvement of the development and utilization of water areas in my country, various maritime operations and water recreation activities are becoming more frequent, and the drowning accident rate remains high, creating an urgent need for efficient and safe water rescue equipment.

[0003] Currently, traditional manual lifebuoy deployment methods in water rescue suffer from low throwing accuracy and limitations in long-distance rescue, while helicopter rescue faces bottlenecks such as high cost and poor maneuverability, making it difficult to meet the rapid response needs of emergencies. To address these pain points, flying rescue equipment has emerged in related technical fields. For example, Chinese patent CN213921429U discloses a flying lifebuoy, which includes a main body consisting of a shell and an internal foam float, and is equipped with a power supply, control system, and flight propulsion system. The control system can quickly deliver the lifebuoy to the vicinity of the person in the water, improving rescue efficiency and ensuring the safety of rescuers. However, this flying lifebuoy still has significant shortcomings in practical applications: The aforementioned flying rescue equipment has a shell consisting of an upper and lower shell welded together as a fixed unit, which makes the size of the central hole impossible to adjust. During the rescue, the person in the water is often in a state of high tension, panic, or severe exhaustion, making it difficult for them to actively pass their body through the fixed-size central hole. At the same time, during the deployment phase, due to the small diameter of the central hole, it is very easy for human error, environmental interference such as changes in wind speed and water flow, or system response delays to cause the lifebuoy to be unable to accurately align with the person in the water, resulting in the lifebuoy deviating from the target or failing to effectively cover the person in the water, greatly reducing the success rate of the rescue. These defects are particularly prominent in emergency rescue scenarios, seriously restricting the practicality and reliability of the flying rescue lifebuoy. Summary of the Invention

[0004] To address the problems mentioned in the background section, the present invention adopts the following technical solution: A water rescue drone lifebuoy device includes a flight component and a lifebuoy body composed of four sets of extended lifebuoy segments, with the flight component mounted on the extended lifebuoy segments; a gas-storing and water-pumping component storing compressed gas, disposed within the extended lifebuoy segments; and a telescopic drive component disposed within the extended lifebuoy segments, with both ends of the telescopic drive component fixedly connected to two adjacent sets of extended lifebuoy segments, the telescopic drive component driving the gas-storing and water-pumping component to drain water when it resets; each of the four sets of extended lifebuoy segments stores a first folding airbag and a second folding airbag, the air vents of the first folding airbag, the second folding airbag, the gas-storing and water-pumping component, and the telescopic drive component are connected by a second control valve; when the lifebuoy body moves above the person in the water, it unfolds, sinks into the water to the waist and abdomen of the person in the water, contracts to fix the person in the water, and causes the second folding airbag to expand towards the center of the lifebuoy body, pulling the person in the water to float; when rescuing multiple people, the second control valve controls the first folding airbag to expand, increasing the volume of the lifebuoy body.

[0005] Preferably, the extended life-saving flap includes an upper shell, a lower shell, a flip cover, and a latching cover. The upper shell and lower shell are sealed and fixed together. The flip cover is hinged to the upper shell and fixed to the lower shell. The latching cover is latched to the lower shell. A sealed cavity is provided between the upper shell and the lower shell. The air-storage and water-pumping assembly, the telescopic drive assembly, and the second control valve are all located within the sealed cavity. A first storage slot is provided between the upper shell, lower shell, and flip cover. The first folding airbag is stored in the first storage slot. When the first folding airbag inflates, the gas pressure inside the first folding airbag drives the flip cover to unfold. A second storage slot is provided between the lower shell and the latching cover. The second folding airbag is stored in the second storage slot. When the second folding airbag inflates, the gas pressure inside the second folding airbag drives the latching cover to move toward the body of the person in the water.

[0006] Preferably, a sealing box is fixedly installed inside the extended life-saving segment, and an annular cavity is provided on the extended life-saving segment. A sealing installation box is fixedly installed inside the annular cavity through the sealing box.

[0007] Preferably, the flight assembly includes a controller and a battery fixedly installed in a sealed box, and an electric motor wing is fixedly installed on the sealed box.

[0008] Preferably, the telescopic drive assembly includes a piston cylinder fixedly installed in a sealed cavity, a second piston rod slidably installed inside the piston cylinder, a second piston plate fixedly installed at one end of the second piston rod extending into the piston cylinder, an elastic element sleeved on the second piston rod, the two ends of the elastic element respectively abutting against the inner wall of the second piston plate and the piston cylinder, and the end of the second piston rod extending outside the piston cylinder fixedly connected to a sealing box on the adjacent extended life-saving segment.

[0009] Preferably, the gas storage and water pumping assembly includes a sealed tank, a first piston plate is slidably installed inside the sealed tank, and a first piston rod is fixedly installed on the first piston plate; a first electromagnet and a second electromagnet are fixedly installed on both sides of the first piston plate, and a third electromagnet and a fourth electromagnet are fixedly installed on the inner walls at both ends of the sealed tank, respectively; when the sealed tank stores compressed gas, the first electromagnet and the third electromagnet collide.

[0010] Preferably, a water pipe is fixedly installed on the sealed container, and a first control valve is provided on the water pipe. When the first electromagnet and the third electromagnet repel each other and drive the first piston plate to move towards the fourth electromagnet, the first control valve opens and water is drawn into the sealed container through the water pipe.

[0011] Preferably, the second control valve is a four-way valve, and each of the four-way valve ports is equipped with an electromagnetic control switch. The four ports of the four-way valve are respectively connected to the air ports of the first folding airbag, the sealing can, the piston cylinder, and the second folding airbag.

[0012] Preferably, a camera is fixedly installed at the bottom of the sealed mounting box. There are four sets of cameras arranged in a rectangular pattern. The field of view of each set of cameras is not less than 120° of the component. The field of view overlap rate of two adjacent sets of cameras is not less than 30%. The camera captures water surface images through multi-view visual fusion and frames the position of the person who fell into the water, and transmits the three-dimensional positioning information of the person who fell into the water to the flight component.

[0013] Preferably, a protective grille is fixedly installed on the annular cavity, and the motor wing is disposed inside the protective grille.

[0014] The present invention has the following beneficial effects: 1. This invention achieves radial expansion and contraction of the central hole of the lifebuoy body through the linkage of four sets of extended life-saving segments and telescopic drive components. It can be accurately put on and fixed at the waist and abdomen without the active cooperation of the person falling into the water. This solves the problem that in the prior art, the lifebuoy shell is a fixed structure and the size of the central hole is not adjustable, which makes it difficult for panicked, physically exhausted or confused people to put on the lifebuoy actively, resulting in a low success rate of rescue.

[0015] 2. In this invention, for two core scenarios where the person who has fallen into the water is conscious or confused, the device has two rescue methods: active placement and retraction fixation, and pumping down, precise fitting, and floating and lifting. This solves the problem that existing flying lifebuoys lack scenario adaptability and rely solely on the person who has fallen into the water to actively grab them, which leads to the failure of rescue for people in special situations.

[0016] 3. This invention uses four sets of rectangularly distributed cameras to achieve blind-spot-free data acquisition and three-dimensional positioning through visual fusion, automatically triggering subsequent rescue actions. This solves the problems of existing technologies that rely on manual remote control positioning, have blind spots, are susceptible to water surface reflection and floating object interference, have large operational errors, and have positioning delays. Attached Figure Description

[0017] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of a water rescue drone lifebuoy device proposed in this invention. Figure 1 ; Figure 2 This is a three-dimensional structural diagram of a water rescue drone lifebuoy device proposed in this invention. Figure 2 ; Figure 3 This is a three-dimensional structural diagram of a water rescue drone lifebuoy device proposed in this invention. Figure 3 ; Figure 4 This is a top sectional view of a water rescue drone lifebuoy device proposed in this invention; Figure 5 This is a schematic diagram of the extended life-saving segment structure of a water rescue drone lifebuoy device proposed in this invention. Figure 1 ; Figure 6 This is a schematic diagram of the extended life-saving segment structure of a water rescue drone lifebuoy device proposed in this invention. Figure 2 ; Figure 7 This is a schematic diagram of the telescopic drive assembly of a water rescue drone lifebuoy device proposed in this invention; Figure 8 This is a schematic diagram of the air storage and water pumping component of a water rescue drone lifebuoy device proposed in this invention; Figure 9 This is a top sectional view of a water rescue drone lifebuoy device proposed in this invention; Figure 10 This is a cross-sectional view of the extended life-saving segment of a water rescue drone lifebuoy device proposed in this invention.

[0018] In the diagram: 1. Extended life-saving flap; 11. Lower shell; 12. Upper shell; 13. Flip-top; 14. First storage tank; 15. Sealed cavity; 16. Annular cavity; 17. Second storage tank; 18. Cover; 2. Sealed box; 21. Sealed mounting box; 22. Motor wing; 23. Camera; 3. Air storage and water pumping assembly; 31. Sealed tank; 32. First piston plate; 33. First piston rod; 34. First electromagnet; 35. Second electromagnet; 36. Third electromagnet; 37. Water pipe; 38. First control valve; 39. Fourth electromagnet; 4. Telescopic drive assembly; 41. Piston cylinder; 42. Second piston rod; 43. Second piston plate; 44. Elastic element; 5. Second control valve; 6. First folding airbag; 61. Second folding airbag; 7. Protective grille; 8. Battery; 81. Controller. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention 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 the present invention, but are not intended to limit the scope of the present invention.

[0020] Reference Figures 1-10 A water rescue drone lifebuoy device includes a flight component and a lifebuoy body composed of four sets of extended lifebuoy segments 1, with the flight component mounted on the extended lifebuoy segments 1; a gas storage and pumping component 3 storing compressed gas, disposed within the extended lifebuoy segments 1; and a telescopic drive component 4 disposed within the extended lifebuoy segments 1, with both ends of the telescopic drive component 4 fixedly connected to two adjacent sets of extended lifebuoy segments 1, the telescopic drive component 4 driving the gas storage and pumping component 3 to drain water when it resets; each of the four sets of extended lifebuoy segments 1 stores compressed gas. The lifebuoy has a first folding airbag 6 and a second folding airbag 61. The air vents of the first folding airbag 6, the second folding airbag 61, the air storage and water pumping assembly 3, and the telescopic drive assembly 4 are connected by a second control valve 5. When the lifebuoy moves above the person in the water, it unfolds and sinks into the water to the waist and abdomen of the person in the water. It then contracts to fix the person in the water and causes the second folding airbag 61 to expand towards the center of the lifebuoy and help the person in the water float. When rescuing multiple people, the second control valve 5 controls the first folding airbag 6 to expand, increasing the volume of the lifebuoy.

[0021] During a rescue operation, rescuers can use a remote control to quickly fly the device above the person in the water. When the device reaches the person, the second control valve 5 controls the gas in the gas storage and pumping assembly 3 to enter the telescopic drive assembly 4. The gas in the telescopic drive assembly 4 drives the telescopic drive assembly 4 to extend. During the extension, the four sets of extended life-saving petals 1 unfold, thereby increasing the area of ​​the central hole of the life ring body, making it easier to fit the person in the water.

[0022] When the person in the water is conscious and able to actively grab the lifebuoy, after the person is in the center of the lifebuoy, the second control valve 5 controls the telescopic drive assembly 4 to connect with the first folding airbag 6. Under the action of the reset mechanism inside the telescopic drive assembly 4, the compressed gas inside the telescopic drive assembly 4 is sent into the first folding airbag 6, thereby causing the first folding airbag 6 to expand and increase the buoyancy of the lifebuoy. While increasing the buoyancy, the telescopic drive assembly 4 drives the four sets of extended life-saving segments 1 to retract and fix themselves to the person in the water.

[0023] When a person who has fallen into the water is in a state of high tension, frantic struggle, or severe exhaustion, after the lifebuoy body covers the person, the lifebuoy body falls to the water surface. The air-storage and water-pumping component 3 pumps water to increase the weight of the lifebuoy body, thereby reducing the buoyancy of the lifebuoy body and causing it to sink into the water. This allows the lifebuoy body to move to the waist and abdomen position of the person who has fallen into the water. Then, the telescopic drive component 4 resets and clamps the waist and abdomen of the person who has fallen into the water. At the same time as resetting, the air-storage and water-pumping component 3 expels water and simultaneously releases gas into the second folding airbag 61, driving the second folding airbag 61 to expand and increase buoyancy. In addition, the second folding airbag 61 expands towards the center of the lifebuoy body, which can also fix the waist and abdomen of the person who has fallen into the water, preventing the person from being unable to hold onto the lifebuoy body due to exhaustion.

[0024] In summary, this lifebuoy has three rescue modes: 1. Rescuers remotely control the flight component to propel the device to quickly fly above the person in the water. After the device reaches the target position, the lifebuoy body descends to provide buoyancy support for the person in the water. During the rescue, the number of first folding airbags 6 can be controlled to expand according to the weight of the person in the water in order to rescue the person in the water. Second, when it is necessary to rescue multiple people who have fallen into the water within the same area, four sets of first folding airbags 6 can be inflated by controlling four sets of second control valves 5. By inflating the first folding airbags 6 by four sets, the overall volume of the lifebuoy body can be increased, thereby enhancing the load-bearing capacity of the device to meet the needs of rescuing multiple people at the same time. Third, when the person in the water is in a state of high tension, panicked struggle, or severe exhaustion, the lifebuoy body covers the person and falls to the water surface. The air-storage and water-pumping component 3 pumps water to increase the weight of the lifebuoy body, reducing buoyancy and causing it to sink into the water and move to the waist and abdomen of the person in the water. Then, the telescopic drive component 4 resets and clamps the waist and abdomen of the person in the water. At the same time as resetting, the air-storage and water-pumping component 3 discharges water and releases gas into the second folding airbag 61, driving the airbag to expand to increase buoyancy. In addition, when the second folding airbag 61 expands towards the center of the lifebuoy body, it can further fix the waist and abdomen of the person in the water, preventing the person from losing grip due to exhaustion and falling out of the lifebuoy.

[0025] In summary, this device can quickly fly above a person who has fallen into the water using its flight components, significantly shortening rescue response time and increasing the survival rate of the person.

[0026] The device has three rescue modes, which can be specifically adapted to people of average weight who fall into the water, multiple people who fall into the water, and people who fall into the water in special conditions such as high tension and physical exhaustion, covering diverse rescue needs and having wide applicability.

[0027] The device uses the telescopic drive component 4 to drive the expansion rescue flap 1 to unfold and retract, expanding the capture range to accurately capture the person in the water. In special scenarios, the device uses the air storage and water pumping component 3 to achieve bottom positioning, and works with the second folding airbag 61 to expand towards the center to fix the person in the water, which can effectively prevent the person from falling out of the device due to physical exhaustion and ensure the stability of the rescue.

[0028] The device precisely controls the inflation of the first folding airbag 6 and the second folding airbag 61 through the second control valve 5. The number of airbags can be adjusted according to the weight of the person who fell into the water, or the volume of the main body can be increased to enhance the load-bearing capacity when multiple people are rescued. At the same time, it is combined with the drainage and inflation linkage of the air storage and water pumping component 3 to ensure that the buoyancy is adapted to the rescue needs.

[0029] Reference Figure 5 , Figure 6 and Figure 10 The extended life-saving flap 1 includes an upper shell 12, a lower shell 11, a flip cover 13, and a latching cover 18. The upper shell 12 is sealed and fixed to the lower shell 11. The flip cover 13 is hinged to the upper shell 12 and fixed to the lower shell 11. The latching cover 18 is latched to the lower shell 11. A sealed cavity 15 is provided between the upper shell 12 and the lower shell 11. The air storage and water pumping assembly 3, the telescopic drive assembly 4, and the second control valve 5 are all located in the sealed cavity 15. A first storage groove 14 is provided between the upper shell 12, the lower shell 11, and the flip cover 13. The first folding airbag 6 is stored in the first storage groove 14. When the first folding airbag 6 inflates, the gas pressure inside the first folding airbag 6 drives the flip cover 13 to unfold. A second storage slot 17 is provided between the lower housing 11 and the cover 18. The second folding airbag 61 is stored in the second storage slot 17. When the second folding airbag 61 inflates, the gas pressure inside the second folding airbag 61 drives the cover 18 to move toward the body of the person who has fallen into the water, thereby fixing the body of the person who has fallen into the water.

[0030] The flip cover 13 can rotate up to 90° after opening. After the first folding airbag 6 is inflated, the flip cover 13 overlaps the middle of the inflated first folding airbag 6 to prevent uneven force on both sides of the first folding airbag 6 from causing the first folding airbag 6 to lift up. This ensures that the buoyancy is evenly applied around the waist and abdomen, ensuring that the person who falls into the water is always in a stable, vertical, and floating position, thus avoiding secondary injury.

[0031] The inner wall of the flip cover 13 can also be fixed to the first folding airbag 6 by Velcro, and the first folding airbag 6 is fixed after it is inflated and unfolded.

[0032] The upper shell 12 and the lower shell 11 together constitute the main structure of the extended life-saving segment 1, which provides external support and internal space. They can be made of high-strength, corrosion-resistant, lightweight materials, such as engineering plastics or composite materials, to ensure durability and buoyancy in the aquatic environment.

[0033] The flap 13, as part of the extended life-saving flap 1, is used to cover and protect the internal first folded airbag 6. Its material may be similar to the shell and it is designed to open smoothly when the airbag inflates.

[0034] The sealing and fixing between the upper housing 12 and the lower housing 11 is intended to form a sealed space to prevent water or other external substances from entering.

[0035] The hinge of the flip cover 13 to the upper housing 12 allows it to rotate and open around the hinge axis, and the hinge may be made of a corrosion-resistant material.

[0036] The flip cover 13 is fixed to the lower housing 11 so that the flip cover 13 is closed when the airbag is not inflated. This can be achieved by means of buckles, magnetic attraction or interference fit.

[0037] The sealed cavity 15 is an internal space enclosed by the upper shell 12 and the lower shell 11. Its main function is to provide a dry and protected working environment for the gas storage and water pumping assembly 3, the telescopic drive assembly 4, and the second control valve 5.

[0038] The first storage slot 14 is a space specifically designed to accommodate the first folding airbag 6. Its shape and size match the storage state of the first folding airbag 6, ensuring that the airbag can be stored compactly and safely when it is not inflated. When the first folding airbag 6 is inflated, the gas pressure generated inside it acts directly on the inside of the flip cover 13, thereby overcoming the fixing force of the flip cover 13 and causing it to rotate and open around the hinge axis.

[0039] Reference Figure 5 The extended rescue segment 1 has a sealed box 2 fixedly installed inside, and the extended rescue segment 1 has an annular cavity 16. The sealed box 2 extends into the annular cavity 16 and has a sealed mounting box 21 fixedly installed inside. The flight components include a controller 81 and a battery 8 fixedly installed inside the sealed box 2. The sealed mounting box 21 has an electric motor wing 22 fixedly installed on it.

[0040] Among them, the controller 81 is the core of the flight components, responsible for receiving instructions, processing sensor data and outputting control signals to coordinate the various actions of the aircraft.

[0041] Battery 8 is the power source that provides electrical power to the entire flight assembly, ensuring the proper functioning of the motors, controllers 81, and other electronic equipment.

[0042] Battery 8 can be a high-energy-density lithium polymer battery or a lithium-ion battery to meet the energy requirements of long-duration flight.

[0043] The electric motor wing 22 is the actuator that generates flight thrust. It consists of an electric motor and a propeller. The electric motor is housed in the sealed mounting box 21. The electric motor wing 22 can be a fixed-pitch propeller system or a variable-pitch propeller system to adapt to different flight performance requirements. The variable-pitch propeller system can switch to a low pitch after the electric motor wing 22 is submerged in water to overcome high drag and propel. At this time, the propeller can cooperate with the air storage and water pumping assembly 3 to drive the lifebuoy body to sink, thereby increasing the sinking speed of the lifebuoy body.

[0044] The controller 81 and the battery 8 are properly placed inside the sealed box 2 and electrically connected to the external motor wing 22 through wires inside the sealed mounting box 21.

[0045] Reference Figure 3 , Figure 6 and Figure 7 The telescopic drive assembly 4 includes a piston cylinder 41 fixedly installed in the sealed cavity 15, a second piston rod 42 slidably installed in the piston cylinder 41, a second piston plate 43 fixedly installed at one end of the second piston rod 42 extending into the piston cylinder 41, an elastic element 44 sleeved on the second piston rod 42, the two ends of the elastic element 44 respectively abutting against the inner wall of the second piston plate 43 and the piston cylinder 41, and the end of the second piston rod 42 extending out of the piston cylinder 41 fixedly connected to the sealing box 2 on the adjacent extended life-saving segment 1.

[0046] When the compressed gas inside the gas storage and pumping assembly 3 enters the piston cylinder 41, the pressure of the gas drives the second piston plate 43 to slide the second piston rod 42, thereby pushing the four sets of extended rescue flaps 1 to unfold. At the same time as the extended rescue flaps 1 unfold, the elastic element 44 is compressed.

[0047] When the piston cylinder 41 is connected to the first folded airbag 6, the elastic element 44 rebounds and drives the four sets of extended life-saving valves 1 to contract and reset.

[0048] It should be noted that the elastic force of the elastic element 44 is less than the thrust of the compressed gas in the gas storage and pumping assembly 3. At the same time, the elastic force of the elastic element 44 is greater than the gas pressure inside the first folding airbag 6 after it expands.

[0049] Among them, the elastic element 44 is either a helical compression spring or a gas spring.

[0050] Reference Figure 6 and Figure 8The gas storage and water pumping assembly 3 includes a sealed tank 31. A first piston plate 32 is slidably installed inside the sealed tank 31, and a first piston rod 33 is fixedly installed on the first piston plate 32. A first electromagnet 34 and a second electromagnet 35 are fixedly installed on both sides of the first piston plate 32, and a third electromagnet 36 and a fourth electromagnet 39 are fixedly installed on the inner walls of both ends of the sealed tank 31, respectively. When the sealed tank 31 contains compressed gas, the first electromagnet 34 and the third electromagnet 36 abut against each other. A water pipe 37 is fixedly installed on the sealed tank 31. The first control valve 38 is provided on the 7. When the first electromagnet 34 and the third electromagnet 36 repel each other and drive the first piston plate 32 to move towards the fourth electromagnet 39, the first control valve 38 opens and pumps water into the sealed tank 31 through the water pipe 37. The second control valve 5 is a four-way valve, and each of the four-way valve ports is equipped with an electromagnetic control switch (the passage of the electromagnetic control switch is manually remotely controlled). The four ports of the four-way valve are respectively connected to the air port of the first folding airbag 6, the air port of the sealed tank 31, the piston cylinder 41, and the air port of the second folding airbag 61.

[0051] When the second control valve 5 connects the sealed tank 31 to the piston cylinder 41, under the action of the pressure difference, the gas in the sealed tank 31 flows into the piston cylinder 41 and drives the four sets of extended life-saving flaps 1 to unfold. When the life ring body falls to the water surface, the first electromagnet 34 and the third electromagnet 36 are energized to generate repulsive force, and the second electromagnet 35 and the fourth electromagnet 39 attract each other to generate attractive force. Using the repulsive force and the attractive force, the first piston plate 32 is driven to move towards the fourth electromagnet 39, thereby compressing all the gas inside the sealed tank 31 into the piston cylinder 41. When the first piston plate 32 slides towards the fourth electromagnet 39, the first control valve 38 opens. Under the action of the pressure difference, the first piston plate 32 draws water into the sealed tank 31 through the water pipe 37, thereby increasing the weight of the life ring body. This, in conjunction with the flight component, drives the life ring body to sink. The flight component only assists in sinking the life ring body.

[0052] When the lifebuoy body sinks to the waist and abdomen of the person in the water, the second control valve 5 connects the sealing tank 31, the second folding airbag 61, and the piston cylinder 41. At this time, the gas pressure inside the device decreases. After the gas pressure decreases, the thrust on the second piston plate 43 is less than the pressure of the elastic element 44 on the second piston plate 43. At this time, the piston cylinder 41 squeezes out the gas under the action of the elastic element 44. Part of the gas enters the second folding airbag 61, causing the second folding airbag 61 to expand. At the same time, part of the gas flows back to the sealing tank 31. During the process of the elastic element 44 driving the four sets of extended life-saving valves 1 to reset and retract, the sealing box 2 abuts against the first piston rod 33. The first piston rod 33 drives the first piston plate 32 to move towards the third electromagnet 36. At this time, the first control valve 38 opens, thereby discharging the water in the sealing tank 31, thereby increasing the overall buoyancy of the lifebuoy device.

[0053] When in use, the piston cylinder 41 is only connected to the sealed tank 31. The gas volume is small and the pressure is high, which is sufficient to overcome the elastic force of the elastic element 44 and push the extended life-saving valve 1 to unfold. After switching the passage, gas enters the first folding airbag 6 or the second folding airbag 61, the total volume increases instantly, and the air pressure decreases accordingly. However, this low pressure value is still sufficient to open the flap 13 or the latch 18 and to inflate the airbag. When contracting, the elastic force of the elastic element 44 is greater than the gas pressure after the pressure drop. The rebound of the elastic element 44 can both drive the expansion life-saving flap 1 to contract and clamp the person falling into the water, and also force the remaining gas in the piston cylinder 41 into the airbag, achieving two goals at once.

[0054] In addition, the first electromagnet 34 and the third electromagnet 36 can be replaced with a composite spring (with an external waterproof layer). After the piston cylinder 41 inflates the air bladder, the air passage is simultaneously connected to the sealed tank 31. At this time, the thrust generated by the gas pressure on the first piston plate 32 can drive the composite spring to contract and push out the water in the sealed tank 31 when the first control valve 38 is opened.

[0055] Reference Figure 9 A camera 23 is fixedly installed at the bottom of the sealed mounting box 21. There are four sets of cameras 23, which are arranged in a rectangular shape. The field of view of each of the four sets of cameras 23 is not less than 120° of the component. The field of view overlap rate of two adjacent sets of cameras 23 is not less than 30%. The camera captures the water surface image through multi-view visual fusion and frames the position of the person who fell into the water. It transmits the three-dimensional positioning information of the person who fell into the water to the flight component. A protective grid 7 is fixedly installed on the annular cavity 16, and the motor wing 22 is set inside the protective grid 7.

[0056] Each group of cameras 23 has a field of view of ≥120° and an overlap rate of ≥30% between adjacent cameras 23. The rectangular layout allows the acquisition range of the four groups of cameras 23 to cover and complement each other, achieving full-view, blind-spot-free shooting of the water surface area below the lifebuoy, avoiding the missed detection of people falling into the water due to the limited field of view of a single camera 23, and improving the accuracy of lifebuoy deployment.

[0057] In summary, this device has the following advantages: By linking the four sets of extended life-saving segments 1 with the telescopic drive component 4, the radial expansion and contraction of the central hole of the life ring body can be achieved. It can be accurately put on and fixed at the waist and abdomen without the active cooperation of the person falling into the water. This solves the problem that in the existing technology, the life ring shell is a fixed structure and the size of the central hole is not adjustable, which makes it difficult for panicked, physically exhausted or confused people to put on the life ring actively, resulting in a low success rate of rescue.

[0058] Targeting two core scenarios where the person falls into the water is conscious or confused, this device has two rescue methods: active deployment and retraction fixation, and pumping down, precise fitting, and floating and lifting. It solves the problem that existing flying lifebuoys lack scenario adaptability, rely solely on the person actively grabbing the lifebuoy, and fail to rescue people in special situations.

[0059] The system is linked with the second folding airbag 61 to form a linkage system. By dynamically switching between water pumping to increase weight and sinking, water drainage and airbag inflation to float, the buoyancy can be precisely controlled. This solves the problem that in the existing technology, lifebuoys rely only on fixed foam floats, the buoyancy is not adjustable, and they cannot be adapted to people of different weights who fall into the water or complex sea conditions.

[0060] Four rectangularly distributed cameras 23 achieve blind-spot-free data acquisition and three-dimensional positioning through visual fusion, automatically triggering subsequent rescue actions; this solves the problems of existing technologies that rely on manual remote control positioning, have blind spots, are susceptible to water surface reflection and floating object interference, have large operational errors and positioning delays.

[0061] The protective grille 7 prevents the motor wing 22 from being entangled in aquatic plants or scratching the person falling into the water, and the multiple sealing structure protects the core components; the flight, positioning, drive, and buoyancy adjustment components are integrated into one unit, without the need for additional assembly and debugging; it solves the problems of existing technologies that lack a dedicated wing protection structure, which can easily cause secondary injuries, core components that are easily corroded by water, and the long preparation time and high cost of traditional drones carrying lifebuoys.

[0062] The design of the flap 13 of the extended life-saving flap 1 enables the automatic deployment of the first folding airbag 6. The telescopic drive component 4 completes the reset through the elastic element 44 and the compressed gas. The core action is automatically linked through the control valve. This solves the problems of existing rescue equipment having a complex structure, relying on professional experience for operation, inconvenient airbag deployment, and easy failure of core components.

[0063] After the rescue is completed, the first folding airbag 6 or the second folding airbag 61 can be connected to the sealed container 31, and the gas in the first folding airbag 6 or the second folding airbag 61 can be manually compressed and re-pressurized into the sealed container 31, so as to achieve repeated use.

[0064] Among them, the multi-view camera 23 accurately obtains the three-dimensional positioning information of the person who has fallen into the water through visual fusion, providing a precise position reference for the telescopic drive component 4; the telescopic drive component 4 drives the segment to expand synchronously according to the positioning data, so that the central hole accurately covers the range of the person who has fallen into the water, and then retracts and fixes itself when it falls to fit, achieving an automated closed loop of positioning, fitting, and fixing, reducing fitting errors, reducing manual intervention and adjustment, and greatly improving the success rate and efficiency of fitting, solving the dual problems of inaccurate positioning and difficult fitting in the existing technology, avoiding the deviation of the lifebuoy caused by manual positioning, and solving the problem that the fixed central hole cannot be fitted due to position deviation.

[0065] When the telescopic drive assembly 4 retracts in segments via the elastic element 44, it simultaneously releases compressed gas into the second folded airbag 61. The retraction action secures the waist and abdomen of the person in the water, while the release of gas causes the airbag to expand rapidly. The two actions are completed simultaneously, ensuring a seamless connection between securing and buoyancy enhancement. This avoids the risk of sinking due to insufficient buoyancy after securing or falling due to insecure securing after buoyancy enhancement. Once secured, buoyancy increases, quickly lifting the person in the water to a safe water level.

[0066] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A water rescue drone lifebuoy device, comprising a flight component, characterized in that, Also includes: The life ring body is composed of four sets of extended life-saving segments (1), and the flight component is set on the extended life-saving segments (1); A gas-storage pumping assembly (3) containing compressed gas is disposed within the extended life-saving valve (1); The telescopic drive assembly (4) is installed in the extended life-saving segment (1). The two ends of the telescopic drive assembly (4) are fixedly connected to the two adjacent extended life-saving segments (1). When the telescopic drive assembly (4) is reset, it drives the gas storage and water pumping assembly (3) to drain water. Each of the four sets of extended life-saving flaps (1) stores a first folding airbag (6) and a second folding airbag (61). The ventilation ends of the first folding airbag (6), the second folding airbag (61), the air storage and water pumping assembly (3), and the telescopic drive assembly (4) are connected by a second control valve (5). When the lifebuoy moves above the person in the water, it unfolds and sinks into the water to the waist and abdomen of the person in the water. It then contracts to fix the person in the water and causes the second folded airbag (61) to expand towards the center of the lifebuoy and help the person in the water float up. When rescuing multiple people, the second control valve (5) controls the first folding airbag (6) to inflate, increasing the volume of the lifebuoy body.

2. The water rescue drone lifebuoy device according to claim 1, characterized in that, The extended life-saving segment (1) includes an upper shell (12), a lower shell (11), a flip cover (13), and a snap cover (18). The upper shell (12) is sealed and fixed to the lower shell (11). The flip cover (13) is hinged to the upper shell (12). The flip cover (13) is fixed to the lower shell (11). The snap cover (18) is snapped to the lower shell (11). A sealing cavity (15) is provided between the upper housing (12) and the lower housing (11), and the gas storage and water pumping assembly (3), the telescopic drive assembly (4) and the second control valve (5) are all located in the sealing cavity (15); A first storage slot (14) is provided between the upper shell (12), the lower shell (11), and the flip cover (13). The first folding airbag (6) is stored in the first storage slot (14). When the first folding airbag (6) expands, the gas pressure inside the first folding airbag (6) drives the flip cover (13) to unfold. A second storage slot (17) is provided between the lower housing (11) and the cover (18). The second folding airbag (61) is stored in the second storage slot (17). When the second folding airbag (61) expands, the gas pressure inside the second folding airbag (61) drives the cover (18) to move toward the body of the person who has fallen into the water.

3. The water rescue drone lifebuoy device according to claim 2, characterized in that, A sealing box (2) is fixedly installed inside the extended life-saving segment (1), and an annular cavity (16) is provided on the extended life-saving segment (1). The sealing box (2) extends into the annular cavity (16) and a sealing installation box (21) is fixedly installed inside.

4. The water rescue drone lifebuoy device according to claim 3, characterized in that, The flight assembly includes a controller (81) and a battery (8) fixedly installed in a sealed box (2), and an electric motor wing (22) is fixedly installed on the sealed mounting box (21).

5. A water rescue drone lifebuoy device according to claim 3, characterized in that, The telescopic drive assembly (4) includes a piston cylinder (41) fixedly installed in a sealed cavity (15). A second piston rod (42) is slidably installed in the piston cylinder (41). A second piston plate (43) is fixedly installed at one end of the second piston rod (42) extending into the piston cylinder (41). An elastic element (44) is sleeved on the second piston rod (42). The two ends of the elastic element (44) abut against the inner wall of the second piston plate (43) and the piston cylinder (41) respectively. The end of the second piston rod (42) extending out of the piston cylinder (41) is fixedly connected to the sealing box (2) on the adjacent extended life-saving segment (1).

6. A water rescue drone lifebuoy device according to claim 5, characterized in that, The gas storage and water pumping assembly (3) includes a sealed tank (31), a first piston plate (32) is slidably installed inside the sealed tank (31), and a first piston rod (33) is fixedly installed on the first piston plate (32). The first piston plate (32) is fixedly installed with a first electromagnet (34) and a second electromagnet (35) on both sides respectively, and the inner walls of the two ends of the sealed can (31) are fixedly installed with a third electromagnet (36) and a fourth electromagnet (39) respectively. When the sealed container (31) contains compressed gas, the first electromagnet (34) and the third electromagnet (36) come into contact.

7. A water rescue drone lifebuoy device according to claim 6, characterized in that, A water pipe (37) is fixedly installed on the sealed tank (31). A first control valve (38) is provided on the water pipe (37). When the first electromagnet (34) and the third electromagnet (36) repel each other and drive the first piston plate (32) to move towards the fourth electromagnet (39), the first control valve (38) opens and pumps water into the sealed tank (31) through the water pipe (37).

8. A water rescue drone lifebuoy device according to claim 6, characterized in that, The second control valve (5) is a four-way valve, and each of the four-way valve ports is equipped with an electromagnetic control switch. The four ports of the four-way valve are respectively connected to the air ports of the first folding airbag (6), the sealing tank (31), the piston cylinder (41), and the air port of the second folding airbag (61).

9. A water rescue drone lifebuoy device according to claim 8, characterized in that, The bottom of the sealed mounting box (21) is fixedly equipped with a camera (23). There are four sets of cameras (23). The four sets of cameras (23) are arranged in a rectangular shape, and the field of view of each set of cameras (23) is not less than 120°. The field of view overlap rate of two adjacent sets of cameras (23) is not less than 30%. The water surface image is collected by multi-view visual fusion and the position of the person who fell into the water is framed. The three-dimensional positioning information of the person who fell into the water is transmitted to the flight component.

10. A water rescue drone lifebuoy device according to claim 3, characterized in that, A protective grille (7) is fixedly installed on the annular cavity (16), and the motor wing (22) is located inside the protective grille (7).

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