A rescue device for automatically identifying a drowning person

Abstract

The application relates to the technical field of automatic rescue, in particular to a rescue device for automatically identifying a drowning person, which comprises a main body plate, the upper end and one side of the main body plate are of an open structure, the upper end of the main body plate is provided with a grabbing and cutting mechanism for clamping the legs of the drowning person and cutting waterweeds, the grabbing and cutting mechanism comprises two accommodating cavities arranged on the side surfaces of the upper end opening of the main body plate, two winding mechanisms are respectively connected in the two accommodating cavities, two grabbing and cutting grass monomers are respectively and slidably connected in the two accommodating cavities, the two grabbing and cutting grass monomers respectively comprise a first fixed body, and a connecting rope is fixedly connected to the arc end of each grabbing and cutting grass monomer; a controller on the side surface of the first fixed body drives a control valve to open, a second impeller drives water flow to impact the guide rods after passing through the control valve, so that the guide rods are driven to move along the guide holes, and the four guide rod end portions drive the clamping rings to clamp the leg root surfaces of the drowning person.

Description

Technical Field

[0001] This invention relates to the field of automatic rescue technology, and in particular to a rescue device for automatically identifying drowning victims. Background Technology

[0002] An automated rescue boat is a type of water rescue equipment with automated functions. It is mainly used in beach rescues, flood disaster relief, and military training and combat support. It can quickly locate drowning victims and automatically move to their vicinity to carry out a rescue. Its working principle is as follows:

[0003] Environmental perception: Using a variety of sensors such as radar, sonar, and cameras, it collects information about the surrounding environment in real time, such as the location of obstacles, water flow speed, and the sound of drowning people.

[0004] Decision-making and planning: Based on perceived environmental information, the system automatically plans the best navigation route and rescue plan through built-in algorithms and decision-making systems.

[0005] Execution and Control: Based on the planned scheme, the rescue vessel's navigation direction, speed, and attitude are precisely controlled through the power and control systems to carry out the rescue mission.

[0006] Existing automatic rescue devices typically have lifebuoys and grab bars on their sides. When the device approaches a drowning person, the person grabs the lifebuoy or grab bar for rescue. However, drowning victims usually lose consciousness within 1-2 minutes of drowning, and existing rescue devices cannot rescue unconscious victims, which is a significant limitation. Furthermore, existing automatic rescue devices cannot perform CPR on drowning victims based on their body size, causing them to miss the optimal rescue time. In areas with abundant aquatic vegetation, if ankles become entangled in the vegetation, existing automatic rescue devices cannot cut the vegetation, making rescue impossible. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of the prior art by proposing an automatic drowning victim rescue device.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an automatic drowning victim identification rescue device, comprising a main body plate, the upper end and one side of the main body plate being open structures; the upper end of the main body plate being provided with a gripping and cutting mechanism for clamping and cutting aquatic plants on the legs of the drowning victim; the gripping and cutting mechanism comprising two receiving cavities opened on the side of the upper opening of the main body plate; a winding mechanism being connected to each of the two receiving cavities; and a grass-cutting unit being slidably connected to each of the two receiving cavities; each of the two grass-cutting units comprising a first fixing body; one end of each of the two first fixing bodies being an arc-shaped structure; and connecting ropes being fixedly connected to the arc-shaped ends of each of the two grass-cutting units; the other ends of the two connecting ropes being connected to the winding mechanism; an automatic CPR mechanism for automatically performing CPR according to the body shape of the drowning victim being provided at the upper end of the main body plate; a sonar detection mechanism for receiving and locating the drowning victim's distress signal being provided near the arc-shaped end of the upper end of the main body plate; and an automatic moving mechanism for pushing and rotating the main body plate being provided at the lower end of the main body plate.

[0009] Preferably, each of the two first fixing bodies has a first slot at its end away from the connecting rope. A dual-axis electric telescopic rod is fixedly connected to each of the two first fixing bodies in the first slot. A first electric telescopic rod is fixedly connected to the telescopic ends of the two dual-axis electric telescopic rods. A second fixing body is fixedly connected to the telescopic ends of the four first electric telescopic rods. A camera system is provided at the ends of the two first fixing bodies. A power jet mechanism that provides power is provided at the end of the first fixing body near the connecting rope. Four symmetrically arranged directional jet mechanisms are provided on the side of the first fixing body.

[0010] Preferably, the second fixing body has a first placement groove on its upper end and one side, a first motor is fixedly connected to one side of the second fixing body, and a first cavity and a second cavity are respectively formed on the side of the second fixing body near the first motor and the side opposite to the opening structure. A first spur gear is fixedly connected to the drive shaft of the first motor in the first cavity. A second spur gear meshing with the first spur gear is rotatably connected to the second fixing body in the first cavity. A first combined gear is rotatably connected to the second fixing body in the first cavity. The vertical section of the first combined gear meshes with the second spur gear. The second fixing body is rotatably connected to the second combined gear and a third spur gear in the second cavity. The conical section of the second combined gear meshes with the conical section of the first combined gear, and the vertical section of the second combined gear meshes with the third spur gear.

[0011] Preferably, the inner side of the second combined gear and the side of the second fixed body are provided with through holes. A plurality of first connecting plates distributed at equal angles are fixedly connected to the inner side of the second combined gear. A first connecting rod is fixedly connected to the end of the plurality of first connecting plates. A first impeller is fixedly connected to the end of the first connecting rod. The inner side of the third spur gear and the side of the second fixed body are provided with through holes. A plurality of second connecting plates distributed at equal angles are fixedly connected to the inner side of the third spur gear. A second connecting rod is fixedly connected to the end of the plurality of second connecting plates. A second impeller is fixedly connected to the end of the second connecting rod. A guide hole communicating with the inner side of the third spur gear is provided on the side of the second fixed body. A guide rod is slidably disposed in the guide hole of the second fixed body. A compression ring is fixedly connected to the end face of the guide rod.

[0012] Preferably, a cutting wheel is fixedly connected to the drive shaft end of the first motor, a second placement groove is provided on the side of the second fixed body, a second electric telescopic rod is fixedly connected in the second placement groove, a wedge is fixedly connected to the telescopic end of the second electric telescopic rod, and a feeding groove is provided at the upper end of the second fixed body.

[0013] Preferably, the automatic CPR mechanism includes two symmetrically arranged first limiting grooves on the upper part of the main body plate, a second motor is fixedly connected to each of the two first limiting grooves, a first threaded rod is fixedly connected to the drive shaft end of each of the two second motors, a limiting block is slidably connected to each of the two first limiting grooves, the two limiting blocks are respectively configured to engage with the first threaded rods by thread, and a third fixing body is fixedly connected to the upper end of each of the two limiting blocks.

[0014] Preferably, the lower end of the third fixing body is provided with a second limiting groove, a third motor is fixedly connected to the third fixing body in the second limiting groove, a second threaded rod is fixedly connected to the drive shaft end of the third motor, a limiting plate is slidably fitted in the second limiting groove, the limiting plate and the second threaded rod are configured by threaded engagement, a third electric telescopic rod is fixedly connected to the lower end of the limiting plate, a flexible block is fixedly connected to the telescopic end of the third electric telescopic rod, a second empty groove is provided at the lower end of the flexible block, an air pump is fixedly connected to the flexible block in the second empty groove, and a plurality of air outlets communicating with the second empty groove are provided at the upper end of the flexible block.

[0015] Preferably, a fixing plate is slidably disposed at the opening structure at the upper end of the main plate, and a plurality of third placement slots are provided at the upper end of the fixing plate. A fourth electric telescopic rod is fixedly connected to the fixing plate in each of the plurality of third placement slots. A pressure sensor is fixedly connected to the telescopic end of each of the plurality of fourth electric telescopic rods, and a support plate is fixedly connected to the upper end of each of the plurality of pressure sensors.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. It can quickly hear the cries for help from a drowning person and activate via a controller, moving above the drowning person. When the drowning person is unconscious in the water, the second electric telescopic rod drives the wedge-shaped body to clamp and limit the surface of the drowning person's leg root. At the same time, it drives the aquatic plants to contact the cutting wheel to cut the aquatic plants. The rotating second combined gear drives the third spur gear to rotate. The rotating third spur gear drives the second impeller to rotate through the second connecting plate and the second connecting rod. A control valve is installed in the guide hole. At this time, the controller on the side of the first fixed body drives the control valve to open. The second impeller drives the water flow through the control valve to... The guide rod impacts, causing it to move along the guide hole. This causes the compression rings at the ends of the four guide rods to clamp the surface of the drowning person's leg root. When the first motor is turned off, the controller drives the control valve to close, maintaining stable pressure in the guide hole. The compression rings continue to clamp the surface of the drowning person's leg root, improving the stability of the grass-cutting unit when moving the drowning person. Then, the winding mechanism in the receiving cavity winds up the two grass-cutting units through the connecting rope. After that, the two grass-cutting units move the drowning person to the fixed plate on the upper surface of the main body, thus realizing the rescue of the unconscious drowning person.

[0018] 2. The controller extends and retracts the fourth electric telescopic rod according to the pressure sensor readings, causing several support plates to rotate the drowning victim's body to a suitable angle for CPR. Then, the second and third motors move the flexible block to the drowning victim's chest. The third electric telescopic rod then extends and retracts, using the flexible block to perform chest compressions. After 30 chest compressions, the second and third motors move the flexible block to the drowning victim's lips. The third electric telescopic rod then moves the second slot at the lower end of the flexible block to contact the drowning victim's lips, activating the air pump and simulating two artificial respirations. This allows for rescue of the drowning victim as the device moves towards the shore, improving the survival rate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a cross-sectional view of the entire invention. Figure 1 ;

[0021] Figure 3 This is a cross-sectional view of the entire invention. Figure 2 ;

[0022] Figure 4 This is a cross-sectional view of the structure of the grass-grasping and cutting unit of the present invention;

[0023] Figure 5This is a cross-sectional view of the structure of the grass-cutting unit of the present invention. Figure 1 ;

[0024] Figure 6 This is a cross-sectional view of the structure of the grass-cutting unit of the present invention. Figure 2 ;

[0025] Figure 7 For the present invention Figure 2 Enlarged view of point A;

[0026] Figure 8 For the present invention Figure 2 Enlarged view of point B;

[0027] Figure 9 For the present invention Figure 3 Enlarged view of point C;

[0028] Figure 10 For the present invention Figure 6 Enlarged view of point D.

[0029] 1. Main body plate; 2. Gripping and cutting mechanism; 3. Automatic CPR mechanism; 4. Sonar detection mechanism; 5. Automatic moving mechanism; 21. Receiving cavity; 22. Gripping and cutting unit; 23. Connecting rope; 2201. First fixed body; 2202. Power jet mechanism; 2203. Directional jet mechanism; 2204. Dual-axis electric telescopic rod; 2205. First electric telescopic rod; 2206. Second fixed body; 2207. First motor; 2208. Feed chute; 2209. Wedge-shaped body; 2210. First placement slot; 2211. First spur gear; 2212. Second spur gear; 2213. First combined gear; 2214. Second combined gear; 2215. Third spur gear; 2216. First cavity; 2217. Second cavity; 2218. Second electric telescopic rod; 2219. 2220. Second placement slot; 2221. Guide hole; 2222. Guide rod; 2222. Cutting wheel; 2223. Extrusion ring; 2224. First impeller; 2225. First connecting plate; 2226. Second impeller; 2227. First connecting rod; 2228. Second connecting rod; 2229. Second connecting plate; 2230. First empty slot; 31. Fixing plate; 32. First limiting slot; 33. First threaded rod; 34. Second motor; 35. Third fixing body; 36. Second limiting slot; 37. Limiting plate; 38. Second threaded rod; 39. Third electric telescopic rod; 310. Flexible block; 311. Third placement slot; 312. Fourth electric telescopic rod; 313. Support plate; 314. Third motor; 315. Limiting block; 316. Second empty slot; 317. Air pump; 318. Air outlet. Detailed Implementation

[0030] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0031] Please see Figure 1 - Figure 10 A rescue device for automatically identifying drowning victims includes a main plate 1. The upper end and one side of the main plate 1 are open structures. The upper end of the main plate 1 is provided with a gripping and cutting mechanism 2 for clamping the legs of the drowning victim and cutting aquatic plants. The gripping and cutting mechanism 2 includes two receiving cavities 21 opened on the side of the upper opening of the main plate 1. A winding mechanism is connected to each of the two receiving cavities 21. A gripping and cutting unit 22 is slidably connected to each of the two receiving cavities 21.

[0032] In this embodiment, each of the two gripping and cutting grass units 22 includes a first fixing body 2201. One end of each of the two first fixing bodies 2201 is an arc-shaped structure. Each of the two gripping and cutting grass units 22 is fixedly connected to a connecting rope 23 at the arc-shaped end. The other end of each connecting rope 23 is connected to a winding mechanism.

[0033] Each of the two first fixing bodies 2201 has a first slot 2230 at its end away from the connecting rope 23. A dual-axis electric telescopic rod 2204 is fixedly connected to each of the two first fixing bodies 2201 in the first slot 2230. A first electric telescopic rod 2205 is fixedly connected to the telescopic ends of the two dual-axis electric telescopic rods 2204. A second fixing body 2206 is fixedly connected to the telescopic ends of the four first electric telescopic rods 2205. A camera system is provided at the ends of the two first fixing bodies 2201. A power jet mechanism 2202 is provided at the end of the first fixing body 2201 near the connecting rope 23. Four symmetrically arranged directional jet mechanisms 2203 are provided on the side of the first fixing body 2201.

[0034] The second fixing body 2206 has a first placement groove 2210 on its upper end and one side. A first motor 2207 is fixedly connected to one side of the second fixing body 2206. The second fixing body 2206 has a first cavity 2216 and a second cavity 2217 on the side near the first motor 2207 and the side opposite to the opening structure, respectively. A first spur gear 2211 is fixedly connected to the drive shaft of the first motor 2207 in the first cavity 2216. The second fixing body 2206 is rotatably connected to a device that meshes with the first spur gear 2211 in the first cavity 2216. The second spur gear 2212 is provided. The second fixed body 2206 is rotatably connected to the first combined gear 2213 in the first cavity 2216. The vertical section of the first combined gear 2213 meshes with the second spur gear 2212. The second fixed body 2206 is rotatably connected to the second combined gear 2214 and the third spur gear 2215 in the second cavity 2217. The conical section of the second combined gear 2214 meshes with the conical section of the first combined gear 2213. The vertical section of the second combined gear 2214 meshes with the third spur gear 2215.

[0035] The second combined gear 2214 has through holes on its inner side and the side of the second fixed body 2206. A plurality of first connecting plates 2225, evenly distributed at angles, are fixedly connected to the inner side of the second combined gear 2214. First connecting rods 2227 are fixedly connected to the ends of the plurality of first connecting plates 2225. First impellers 2224 are fixedly connected to the ends of the first connecting rods 2227. The third spur gear 2215 has through holes on its inner side and the side of the second fixed body 2206. The third spur gear 2215 has through holes on its inner side and the side of the second fixed body 2206. A plurality of second connecting plates 2229 are fixedly connected, and a second connecting rod 2228 is fixedly connected to the end of the plurality of second connecting plates 2229. A second impeller 2226 is fixedly connected to the end of the second connecting rod 2228. A guide hole 2220 communicating with the inner side of the third spur gear 2215 is opened on the side of the second fixing body 2206. A guide rod 2221 is slidably arranged in the guide hole 2220 of the second fixing body 2206. A compression ring 2223 is fixedly connected to the end face of the guide rod 2221.

[0036] A cutting wheel 2222 is fixedly connected to the drive shaft end of the first motor 2207. A second placement groove 2219 is provided on the side of the second fixing body 2206. A second electric telescopic rod 2218 is fixedly connected in the second placement groove 2219. A wedge-shaped body 2209 is fixedly connected to the telescopic end of the second electric telescopic rod 2218. A feeding groove 2208 is provided at the upper end of the second fixing body 2206.

[0037] Specifically, during the movement of the second fixed body 2206, the second electric telescopic rod 2218 extends, causing one side of the wedge-shaped body 2209 to contact the leg. When the drowning person's leg is entangled with aquatic plants, the arc-shaped body at the upper end of the wedge-shaped body 2209 moves the aquatic plants entangled with the leg into the feed trough 2208 on the end face of the second fixed body 2206, thereby cutting the aquatic plants through the rotating cutting wheel 2222.

[0038] In this embodiment, the upper end of the main plate 1 is provided with an automatic CPR mechanism 3 that automatically performs CPR according to the body shape of the drowning person, and the upper end of the main plate 1 is provided with a sonar detection mechanism 4 that receives the drowning person's distress signal and locates it near the arc-shaped end. The lower end of the main plate 1 is provided with an automatic moving mechanism 5 that pushes and rotates the main plate 1.

[0039] The automatic CPR mechanism 3 includes two symmetrically arranged first limiting grooves 32 on the upper end of the main body plate 1. A second motor 34 is fixedly connected to each of the two first limiting grooves 32. A first threaded rod 33 is fixedly connected to the transmission shaft end of each of the two second motors 34. A limiting block 315 is slidably connected to each of the two first limiting grooves 32. The two limiting blocks 315 are respectively configured to engage with the first threaded rod 33 through threaded connection. A third fixing body 35 is fixedly connected to the upper end of each of the two limiting blocks 315.

[0040] The lower end of the third fixing body 35 is provided with a second limiting groove 36. A third motor 314 is fixedly connected to the third fixing body 35 in the second limiting groove 36. A second threaded rod 38 is fixedly connected to the drive shaft end of the third motor 314. A limiting plate 37 is slidably fitted in the second limiting groove 36. The limiting plate 37 and the second threaded rod 38 are set by threaded engagement. A third electric telescopic rod 39 is fixedly connected to the lower end of the limiting plate 37. A flexible block 310 is fixedly connected to the telescopic end of the third electric telescopic rod 39. A second empty groove 316 is provided at the lower end of the flexible block 310. An air pump 317 is fixedly connected to the flexible block 310 in the second empty groove 316. A plurality of air outlets 318 communicating with the second empty groove 316 are provided at the upper end of the flexible block 310.

[0041] A fixing plate 31 is slidably disposed at the opening structure at the upper end of the main plate 1. The upper end of the fixing plate 31 is provided with a plurality of third placement slots 311 arranged at equal intervals. A fourth electric telescopic rod 312 is fixedly connected to the fixing plate 31 in each of the plurality of third placement slots 311. A pressure sensor is fixedly connected to the telescopic ends of the plurality of fourth electric telescopic rods 312. A support plate 313 is fixedly connected to the upper end of the plurality of pressure sensors.

[0042] Specifically, the camera recognition mechanism at the lower end of the flexible block 310 scans the outline of the human body to identify the drowning victim's body shape and mouth and nose. Then, the controller extends and retracts the fourth electric telescopic rod 312 according to the pressure sensor values, causing several support plates 313 to rotate the drowning victim's body to a suitable angle for CPR. Then, the second motor 34 and the third motor 314 move the flexible block 310 to the drowning victim's chest. After that, the third electric telescopic rod 39 extends and retracts, and the flexible block 310 is used to press on the drowning victim's chest.

[0043] In use, the device moves across the river within the predetermined rescue area under the drive of the automatic moving mechanism 5. When someone drowns and cries for help, the sonar detection mechanism 4 can receive the audio signal and locate the person. The sonar detection mechanism 4 and the grabbing and cutting mechanism 2 are electrically connected to the automatic moving mechanism 5 via a controller. The sonar detection mechanism 4 then controls the automatic moving mechanism 5 to activate, thereby moving the main body plate 1 towards the drowning person's area. When the sonar detection mechanism 4 continuously receives signals, indicating that the drowning person is still conscious, a lifebuoy is connected to the upper end of the main body plate 1 via a telescopic rope. The drowning person can then grab the lifebuoy and be pulled downstream to the shore by the device. When the drowning person is unconscious, the sonar detection mechanism 4 can accurately detect the drowning person's body shape using existing sonar technology. The sonar detection mechanism 4 then controls two grabbing and cutting grass units 22 via the controller. The two grabbing and cutting grass units 22 move to the left and right feet of the drowning person under the control of the controller, ensuring that the drowning person is face up after being grabbed by the grabbing and cutting grass units 22.

[0044] A controller is provided on the side of the first fixed body 2201. Then, the power jet mechanisms 2202 on the sides of the two first fixed bodies 2201 are activated under the control of the controller. While the power jet mechanisms 2202 move the first fixed bodies 2201, the four-way jet mechanisms 2203 are activated under the control of the controller, controlling the end face of the first fixed body 2201 to contact the drowning person's foot. At this time, the dual-axis electric telescopic rod 2204 is in an extended state. Then, all four first electric telescopic rods 2205 extend simultaneously. The telescopic ends of the four first electric telescopic rods 2205 are respectively connected to the second fixed body 2206. As the second fixed body 2206 moves along the drowning person's leg, the first motor 2207 is activated, driving the cutting wheel 2222 to rotate. During the movement of the second fixed body 2206, the second electric telescopic rod 2218 extends, causing one side of the wedge-shaped body 2209 to contact the leg. When the drowning person's leg is covered by aquatic plants... During the winding process, the arc-shaped body at the upper end of the wedge-shaped body 2209 moves the seaweed wrapped around the legs to the feed trough 2208 on the end face of the second fixed body 2206, thereby cutting the seaweed by the rotating cutting wheel 2222. At the same time, the first motor 2207 drives the first spur gear 2211 to rotate, the first spur gear 2211 meshes and drives the second spur gear 2212 to rotate, the second spur gear 2212 meshes and drives the first combined gear 2213 to rotate, and then the first combined gear 2213 drives the second combined gear 2214 to rotate. The inner side of the second combined gear 2214 is connected to the first impeller 2224 through the first connecting plate 2225 and the first connecting rod 2227. When the cutting wheel 2222 cuts the seaweed, the first impeller 2224 can use the flowing water to carry the cut seaweed to the outside of the second fixed body 2206, preventing the cut seaweed from accumulating in the first placement trough 2210 and causing entanglement of the cutting wheel 2222, thus improving the reliability of the device.

[0045] When the second fixing body 2206, driven by the first electric telescopic rod 2205, quickly cuts away the tangled weeds around the legs, the second electric telescopic rod 2218 then drives the wedge-shaped body 2209 to clamp and limit the surface of the drowning victim's leg root. Simultaneously, the rotating second combined gear 2214 drives the third spur gear 2215 to rotate. The rotating third spur gear 2215, through the second connecting plate 2229 and the second connecting rod 2228, drives the second impeller 2226 to rotate. A control valve is installed inside the guide hole 2220. At this time, the controller on the side of the first fixing body 2201 opens the control valve, and the second impeller 2226 drives the water flow through the control valve to the guide rod 2221. An impact is made, which drives the guide rod 2221 to move along the guide hole 2220, thereby causing the compression rings 2223 at the ends of the four guide rods 2221 to clamp the surface of the drowning person's leg root. When the first motor 2207 is turned off, the controller drives the control valve to close, keeping the pressure in the guide hole 2220 stable. The compression rings 2223 continue to clamp the surface of the drowning person's leg root, improving the stability of the grass-cutting unit 22 when it moves the drowning person. Then, the winding mechanism in the receiving cavity 21 winds up the two grass-cutting units 22 through the connecting rope 23. After that, the two grass-cutting units 22 move the drowning person to the fixed plate 31 on the upper surface of the main body plate 1.

[0046] The main plate 1 moves to the shore under the drive of the automatic moving mechanism 5. At this time, the drowning person is placed face up on the upper surface of the fixed plate 31. The lower surface of the flexible block 310 is equipped with a camera recognition mechanism. At this time, the pressure sensors at the upper ends of several fourth electric telescopic rods 312 are electrically connected to the controller, the fourth electric telescopic rods 312, the air pump 317, and the camera recognition mechanism through wires. Then, two second motors 34 are started, driving the first threaded rod 33 to rotate. Through the cooperation of the first threaded rod 33 and the limiting block 315, the limiting block 315 is driven to move back and forth along the first limiting groove 32. Then, the third motor 314 drives the second threaded rod 38 to rotate, and the second threaded rod 38 drives the limiting plate 37 to move back and forth along the second limiting groove 36. When the second limiting groove 36 drives the flexible block 310 to move, the camera recognition mechanism at the lower end of the flexible block 310 performs image recognition on the contour of the human body. The system scans to identify the drowning victim's body shape and mouth / nose area. Then, the controller extends and retracts the fourth electric telescopic rod 312 according to the pressure sensor readings. This causes several support plates 313 to rotate the drowning victim's body to a suitable angle for CPR. Next, the second motor 34 and the third motor 314 move the flexible block 310 to the drowning victim's chest. The third electric telescopic rod 39 then extends and retracts, pressing on the drowning victim's chest using the flexible block 310. After 30 chest compressions, the second motor 34 and the third motor 314 move the flexible block 310 to the drowning victim's lips. The third electric telescopic rod 39 then moves the second slot 316 at the lower end of the flexible block 310 to contact the drowning victim's lips. The air pump 317 then activates, mimicking two artificial respirations. This allows the system to rescue the drowning victim as the device moves towards the shore, improving the victim's survival rate.

[0047] In addition, a drowning detection algorithm can be designed, with the following specific steps:

[0048] Step 1: Multi-sensor data acquisition and preprocessing

[0049] Visual data acquisition: The system acquires images of the water area through a camera system, uses the YOLO V11 lightweight model to detect human targets in the images in real time, and simultaneously uses optical flow to track human movement trajectories, recording parameters such as movement speed, acceleration, and time at rest, and identifying drowning characteristic movements such as "head continuously below the water surface" and "inverted V-shaped posture".

[0050] Sonar and pressure data acquisition: The sonar detection mechanism analyzes the intensity of reflected waves and movement trajectory of the human body under the water surface, and combines the data from the water pressure sensor to determine whether the human body is in a sinking state (sudden increase in water pressure with no recovery).

[0051] Environmental data acquisition: Sensors of the automatic moving mechanism acquire environmental parameters such as water flow speed and wave amplitude, while image processing algorithms eliminate interference such as floating plants in areas with dense aquatic plants.

[0052] Step Two: Environmental Adaptation and Data Fusion

[0053] Environmental noise filtering: The detection threshold is dynamically adjusted based on environmental data such as water flow velocity and wave amplitude to reduce false alarms caused by environmental factors.

[0054] Multimodal data fusion: Integrating visual features, sonar data, water pressure data, and environmental parameters to construct a multidimensional drowning behavior analysis model.

[0055] Step 3: Deep Learning Early Warning and Real-time Response

[0056] Spatiotemporal feature extraction: The fused multimodal data is input into a spatiotemporal convolutional network (ST-CNN) to extract spatial features (human pose) and temporal features (action sequence) of continuous video frames.

[0057] Drowning probability calculation: The ST-CNN model outputs a drowning probability value, and triggers an early warning when the probability is ≥0.8.

[0058] Edge computing deployment: Real-time inference on-premises using the NVIDIA Jetson Nano edge computing module enables rapid output of monitoring results and reduces data transmission latency.

[0059] The personnel location solution can be as follows:

[0060] Step 1: Selection and Deployment of Positioning Technology

[0061] It adopts BeiDou + GPS dual-mode positioning, combined with RTK (real-time dynamic) technology to improve accuracy to the centimeter level (base station deployment required).

[0062] The main body of the rescue device is equipped with a waterproof Beidou / GPS module to obtain its own coordinates in real time; through signal interaction with the sonar detection mechanism, it calculates the azimuth and distance of the drowning person relative to the device.

[0063] UWB base station arrays are deployed in scenarios such as beaches and swimming pools, enabling rescue devices to locate drowning victims (if they are carrying location tags) with centimeter-level precision via pulse signals.

[0064] Positioning principle: The distance is calculated by measuring the time of flight (ToF) of the signal, and the three-dimensional coordinates are solved by triangulation.

[0065] Sonar and inertial navigation (underwater positioning)

[0066] Multibeam sonar: emits fan-shaped sound waves to cover the water area, and constructs an underwater point cloud map by using the echo time difference to locate unconscious drowning victims (stationary targets).

[0067] Inertial Navigation System (INS): Utilizes the accelerometer and gyroscope of the first fixed body to calculate the trajectory of the device and assist in correcting sonar positioning errors.

[0068] Step 2: Multi-source data collaboration

[0069] The system automatically switches positioning technologies according to different scenarios, integrating satellite, UWB, sonar, and inertial navigation data to provide a basic data source for subsequent dynamic positioning.

[0070] The sonar detection mechanism receives the distress signals of a drowning victim (if conscious) and calculates the sound source's location using a Time Difference of Arrival (TDOA) algorithm, driving an automated moving mechanism to approach. If no sound source signal is detected, a visual algorithm scans the water area, locks onto a suspected drowning target, and triggers sonar for precise positioning. As the rescue device approaches the target, it uses visual-inertial odometry (VIO) to fuse camera and IMU data, updating the drowning victim's location in real time. After the device grips the drowning victim, it uses tension sensor data from the connecting rope and the device's movement data to deduce the victim's dragging trajectory in the water, optimizing path planning. An extended Kalman filter (EKF) is used to fuse multi-source data (satellite, sonar, and visual) to eliminate interference from water flow disturbances and sensor noise, outputting the optimal estimated location.

[0071] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A rescue device for automatically identifying drowning victims, comprising a main body plate (1), wherein the upper end and one side of the main body plate (1) are open structures, characterized in that: The upper end of the main body plate (1) is provided with a gripping and cutting mechanism (2) for clamping the legs of a drowning person and cutting aquatic plants. The gripping and cutting mechanism (2) includes two receiving cavities (21) opened on the side of the upper opening of the main body plate (1). A winding mechanism is connected to each of the two receiving cavities (21). A gripping and cutting unit (22) is slidably connected to each of the two receiving cavities (21). Each of the two gripping and cutting units (22) includes a first fixing body (2201). One end of each of the two first fixing bodies (2201) is an arc-shaped structure. A connecting rope (23) is fixedly connected to the arc-shaped end of each of the two gripping and cutting units (22). The other end of the connecting rope (23) is connected to the winding mechanism. The upper end of the main plate (1) is provided with an automatic CPR mechanism (3) that automatically performs CPR according to the body shape of the drowning person. The upper end of the main plate (1) near the arc end is provided with a sonar detection mechanism (4) that receives the drowning person's distress signal and locates the person. The lower end of the main plate (1) is provided with an automatic moving mechanism (5) that pushes and rotates the main plate (1). The automatic CPR mechanism (3) includes two first limiting grooves (32) symmetrically opened on the upper end of the main plate (1). A second motor (3) is fixedly connected in each of the two first limiting grooves (32). 4) The drive shaft ends of the two second motors (34) are respectively fixedly connected to the first threaded rods (33), and the two first limiting grooves (32) are respectively slidably connected to the limiting blocks (315). The two limiting blocks (315) are respectively set with the first threaded rods (33) through threaded engagement. The upper ends of the two limiting blocks (315) are fixedly connected to the third fixing body (35); the lower end of the third fixing body (35) is provided with a second limiting groove (36), and the third fixing body (35) is fixedly connected to the third motor (314) in the second limiting groove (36). The drive shaft end of the third motor (314) is fixedly connected to the second threaded rod. (38) A limiting plate (37) slides in the second limiting groove (36). The limiting plate (37) and the second threaded rod (38) are connected by a thread. A third electric telescopic rod (39) is fixedly connected to the lower end of the limiting plate (37). A flexible block (310) is fixedly connected to the telescopic end of the third electric telescopic rod (39). A second slot (316) is opened at the lower end of the flexible block (310). An air pump (317) is fixedly connected to the flexible block (310) in the second slot (316). A number of air outlets (318) communicating with the second slot (316) are opened at the upper end of the flexible block (310).

2. The automatic drowning victim identification rescue device according to claim 1, characterized in that: Two first fixing bodies (2201) have first slots (2230) at their ends away from the connecting rope (23). Two first fixing bodies (2201) are fixedly connected to dual-axis electric telescopic rods (2204) in the first slots (2230). The telescopic ends of the two dual-axis electric telescopic rods (2204) are fixedly connected to first electric telescopic rods (2205). The telescopic ends of the four first electric telescopic rods (2205) are fixedly connected to second fixing bodies (2206). Camera systems are provided at the ends of the two first fixing bodies (2201). Power jet mechanisms (2202) that provide power are provided at the ends of the first fixing bodies (2201) near the connecting rope (23). Four symmetrically arranged directional jet mechanisms (2203) are provided on the sides of the first fixing bodies (2201).

3. The automatic drowning victim identification rescue device according to claim 2, characterized in that: The second fixing body (2206) has a first placement groove (2210) on its upper end and one side. A first motor (2207) is fixedly connected to one side of the second fixing body (2206). The second fixing body (2206) has a first cavity (2216) and a second cavity (2217) on the side near the first motor (2207) and the side opposite to the opening structure, respectively. A first spur gear (2211) is fixedly connected to the drive shaft of the first motor (2207) in the first cavity (2216). The second fixing body (2206) has a rotatable connection in the first cavity (2216) that meshes with the first spur gear (2211). The second spur gear (2212) is provided. The second fixed body (2206) is rotatably connected to the first combined gear (2213) in the first cavity (2216). The vertical section of the first combined gear (2213) meshes with the second spur gear (2212). The second fixed body (2206) is rotatably connected to the second combined gear (2214) and the third spur gear (2215) in the second cavity (2217). The conical section of the second combined gear (2214) meshes with the conical section of the first combined gear (2213). The vertical section of the second combined gear (2214) meshes with the third spur gear (2215).

4. The automatic drowning victim identification rescue device according to claim 3, characterized in that: The inner side of the second combined gear (2214) and the side of the second fixed body (2206) are provided with through holes. A plurality of first connecting plates (2225) are fixedly connected to the inner side of the second combined gear (2214) at equal angles. A first connecting rod (2227) is fixedly connected to the end of each of the first connecting plates (2225). A first impeller (2224) is fixedly connected to the end of each of the first connecting plates (2225). The inner side of the third spur gear (2215) and the side of the second fixed body (2206) are provided with through holes. The inner side of the third spur gear (2215) is fixedly connected to... A plurality of second connecting plates (2229) are provided at equal angles. A second connecting rod (2228) is fixedly connected to the end of the plurality of second connecting plates (2229). A second impeller (2226) is fixedly connected to the end of the second connecting rod (2228). A guide hole (2220) communicating with the inner side of the third spur gear (2215) is provided on the side of the second fixing body (2206). A guide rod (2221) is slidably provided in the guide hole (2220) of the second fixing body (2206). A compression ring (2223) is fixedly connected to the end face of the guide rod (2221).

5. The automatic drowning victim identification rescue device according to claim 3, characterized in that: A cutting wheel (2222) is fixedly connected to the drive shaft end of the first motor (2207). A second placement groove (2219) is provided on the side of the second fixing body (2206). A second electric telescopic rod (2218) is fixedly connected in the second placement groove (2219). A wedge-shaped body (2209) is fixedly connected to the telescopic end of the second electric telescopic rod (2218). A feeding groove (2208) is provided at the upper end of the second fixing body (2206).

6. The automatic drowning victim identification rescue device according to claim 1, characterized in that: A fixing plate (31) is slidably disposed at the opening structure at the upper end of the main plate (1). The upper end of the fixing plate (31) is provided with a plurality of third placement slots (311) arranged at equal intervals. The fixing plate (31) is fixedly connected to a fourth electric telescopic rod (312) in each of the plurality of third placement slots (311). The telescopic ends of the plurality of fourth electric telescopic rods (312) are fixedly connected to pressure sensors. The upper ends of the plurality of pressure sensors are fixedly connected to support plates (313).

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