A drowning emergency experience and training device

Abstract

The present invention discloses a drowning emergency experience and training device, including a mask, a water inlet device, a drainage device, a sensor detection device, and an early warning reaction device; the water inlet device is buckled and connected with the water inlet hole of the mask through a sealing layer wrapped around the water inlet joint; the drainage device is threadedly screwed with the water outlet hole of the mask through the drainage joint; the housing of the sensor detection device is fixed to the top of the mask by glue; the early warning reaction device centralizes components such as LED lights, buzzers, chips and power supplies through an injection molding box, and the peripheral equipment: valves, fast water pumps, switches, water pumps, sensors and main switches are electrically connected to the chips and power supplies in the injection molding box through access holes using wires to form the drowning emergency experience and training device as a whole. The present invention can realize a real sudden drowning experience, can effectively train the drowning emergency psychology and ability of drowning people, and can provide effective services for the implementation of the water adaptation link for swimming beginners.

Description

Technical Field

[0001] The invention relates to the field of drowning safety emergency teaching and training, and in particular to a drowning emergency experience and training device. Background Art

[0002] Drowning accidents are one of the accidents with the highest proportion of casualties among major accidental accidents in my country. According to statistics from the World Health Organization, there are approximately 380,000 deaths from drowning each year worldwide, of which approximately 57,000 people die in my country each year, of which more than 95% are minors. The average number of deaths from drowning is as high as more than 150 per day, and an average of 6 people drown every hour.

[0003] In order to reduce the occurrence of drowning accidents and mortality, the following technical solutions are available to solve the problem.

[0004] The first is safety education, which is to improve the safety awareness of young people through learning from past accident cases in an educational way, thereby reducing the occurrence of drowning accidents. However, this method is not intuitive enough and is difficult to impress young people, so it takes a long time of publicity and education to achieve a better effect.

[0005] The second is sensor monitoring, which uses various sensor detection technology means. When a drowning accident occurs, it can notify the people around or rescuers in the first time, so as to achieve the effect of reducing the mortality rate of drowning. For example, the patented drowning monitoring method, device, equipment and computer-readable storage medium (CN113516828B) collects the user's physical data by using sensor detection technology, and then inputs the detection data into the drowning model to obtain whether the user is drowning. If drowning occurs, an alarm signal is issued to remind nearby people and rescuers. For example, the patented children's water intelligent life-saving bracelet (CN111688885B) adds an airbag device inside the bracelet. When drowning occurs, just press the switch to open the airbag, so that the drowning person floats and notifies the rescuer. However, the sensor monitoring method also has certain disadvantages, that is, the price is often expensive, and the emergency bracelet with airbag is larger as a whole, not easy to carry and popularize on a large scale, and cannot cope with emergencies that are not prepared in advance.

[0006] The third is computer vision recognition, which is to use machine learning, deep learning and other methods to use cameras to identify and determine whether someone is drowning. For example, the patented anti-drowning recognition method based on pattern recognition and fingerprint matching positioning algorithm (CN104484654B) uses computer vision technology to identify whether a person is drowning. If drowning occurs, the fingerprint database and the WiFi module worn by the drowning person are used to locate the person and inform the rescuers to carry out the rescue. Although the use of computer vision recognition is more cost-effective than sensor detection, its detection accuracy is only suitable for detection in a small range, such as swimming pools, ponds, etc., and cannot achieve accurate coverage for large areas such as lakes, rivers, and oceans.

[0007] The fourth is to set up drowning rescue devices, that is, to use measures such as improved drowning warning and rescue devices to reduce the mortality rate of drowning accidents. For example, a patented multifunctional intelligent first aid device (CN216394491U) can enable drowning people to receive professional equipment rescue at the first time by using some first aid facilities related to drowning. However, this method is only suitable for setting up in special places, not in the wild environment, and is not easy to popularize.

[0008] Because the above schemes are often prone to problems such as insufficiently intuitive safety education and teaching, expensive equipment, inability to popularize on a large scale, and inconvenient to carry and use when dealing with how to reduce the incidence and mortality of drowning accidents. In daily drowning accidents, many minors swim in rivers and ponds of unknown depth. In these accidents, swimmers do not have enough experience of drowning and are not sufficiently awed by the possibility of drowning accidents. At the same time, they react in a panic when drowning accidents occur, and do not respond calmly and soberly to drowning situations. Previous accident statistics show that the calm response of drowning people is the most critical link in successful self-rescue. In line with the goal of improving "prevention and reasonable self-rescue", it is necessary to design a drowning experience and training device suitable for safety emergency teaching.

[0009] The purpose of this device is twofold: 1. to make the experiencer feel the feeling of drowning, so that the experiencer, especially the minors, will be alert to the waters of unknown depth; 2. to enable the experiencer to make a calm and reasonable response in the possible drowning process, so as to increase the chance of self-rescue. Summary of the invention

[0010] The purpose of the present invention is to realize experiential sudden drowning training, and to allow the experiencer to experience a real drowning scenario through scene simulation. A drowning emergency experience and training device using drowning scenario simulation is proposed, which can realize a real sudden drowning experience, can effectively train the drowning person's drowning emergency psychology and ability, has the characteristics of low cost and easy popularization, and can fill a gap in drowning safety emergency teaching and training devices.

[0011] The specific technical solution is as follows.

[0012] A drowning emergency experience and training device consists of five parts: a mask, a water inlet device, a drainage device, a sensor detection device, and an early warning response device.

[0013] The mask includes a frame, a sealing ring, a water inlet, a water outlet, a fixing belt, and a nose wing sealing layer; the frame is made of plastic, and in order to fit the human face, a convex part similar to glasses is provided on the upper part thereof, wherein the middle nose wing area is similar to a small hillock bulge, and the lower part is made into a spherical convex shape to ensure sufficient water filling; the sealing ring is laid around the outer contour of the frame, and is made of rubber material, so that the mask can fit closely to the human face; the water inlet is located just above the nose wing area in the middle of the frame to simulate the scene of the face being hit by water flow when drowning suddenly; the water outlet is at the bottom of the frame and has an internal thread to increase the drainage rate by the water's own gravity; the fixing belt is divided into two parts, which are respectively connected to the left and right sides of the outer edge of the frame, and the single-side fixing belt is Y-shaped, and the ends of the fixing belts on the left and right sides are connected with buckles, which are buckled together to fix the mask; the nose wing sealing layer is located in the nose wing area in the middle of the frame, and the experiencer can install and disassemble it as needed. Removing it can experience the feeling of drowning more completely. If the experiencer is worried about eye infection, the nose wing sealing layer can be installed by himself.

[0014] The water inlet device includes a water inlet hose, a water inlet joint, a sealing layer, a valve, a pure water bucket, a fast water pump, a switch, a chip and a power supply; the water inlet hose is made of a slightly hard plastic and has a certain degree of supportability to prevent it from bending and blocking the water flow into the mask; the sealing layer is tightly attached to the edge of the first end of the water inlet joint to ensure the sealing of the mask; the water inlet joint is fan-shaped, and the cross-section of the top end is a long arc, which is used to snap-fit ​​and connect with the water inlet hole of the mask, and the cross-section of the end is a circular surface and is connected to the water inlet hose below; the valve is a double-layer spherical structure with a very small radius difference, the outer layer is a thin spherical surface, the inner layer is a solid sphere, and the control rotor with a structure penetrating the middle part has a protruding The control end is connected to a steering gear, and according to the sudden drop height of the drowning person input, the steering gear is used to control the control end through a program, so that the control rotor rotates a corresponding angle to control the size of the valve opening, and finally changes the instantaneous water filling volume in the mask, forming a water inlet controllable system corresponding to the sudden drop height-control rotor rotation angle-valve opening size-instantaneous water filling volume; the valve is connected to the end of the water inlet hose connected to the water inlet joint, and the lower end of the valve is connected to a section of water inlet hose; the end of the water inlet hose below the valve is closely connected to a fast water pump, and is inserted into a pure water bucket to fill the mask with pure water while preventing infection; the valve, fast water pump, switch, chip and power supply are connected in sequence with wires.

[0015] The drainage device includes a drainage hose, a drainage connector, a water pump, a switch, a chip and a power supply; the drainage hose is made of the same material as the water inlet hose of the water inlet device, but the diameter of the drainage hose is larger than that of the water inlet hose, which is convenient for quick drainage; the drainage connector is cylindrical, with threads on the upper outer surface and a smooth lower outer surface, the threaded end is used to connect to the water outlet of the mask, and the smooth end is connected to the drainage hose; the end of the drainage hose is connected to the water pump to pump out the accumulated water in the mask, and the end of the water pump is connected to a section of drainage hose to drain the accumulated water for water recovery; the water pump, switch, chip and power supply are connected in sequence with wires.

[0016] The sensing detection device includes a shell, a sensor, an LCD display, a lead-out hole, a chip and a power supply; the shell is made of plastic, has a square structure and a lead-out hole, and is fixed to the upper surface of the mask frame by gluing; the sensor is tightly attached to the inner wall of the shell, and its connecting wire is led out through the lead-out hole of the shell and connected to the chip; the LCD display is a long strip display with black text on a blue background, and the signal transmitted by the sensor is processed by a program to display the training score and experience time; the chip is an ARM chip with its own Linux system and an integrated WiFi module, and is connected to a power supply.

[0017] The early warning response device includes a main switch, LED light, buzzer, injection molding box, chip, power supply and access port. In order to facilitate the experiencer to control the experience process by himself, the main switch is an independent module, which is only electrically connected to the chip by wires. The LED light changes to green, blue and red according to the current status of the person and the breath-holding time to display the status. When the breath-holding time is t<t1, it will display green, when t1≤t≤t2, it will display blue, and when t>t2, it will display red. The buzzer is used to give early warning reminders in abnormal conditions. When the experiencer When the breath-holding time exceeds the average time, the buzzer sounds; the injection molding box is rectangular and has access holes on the surface to accommodate the LCD display, LED light, buzzer and chip. The LCD display is attached to the surface of the injection molding box, the LED light protrudes from the top surface of the injection molding box, the sounding end of the buzzer protrudes from the front of the injection molding box, the chip is glued to the inside of the injection molding box, and external wires must be connected to the chip through the access holes; the power supply is powered by a 12V DC battery, the outside of the power supply is covered with insulating tape and placed inside the injection molding box.

[0018] The drowning emergency experience and training device provided by the present invention has the following beneficial technical effects:

[0019] (1) As a training device for drowning safety education methods, it can transform drowning safety education from the traditional oral and written education mode to a more intuitive scene simulation education mode.

[0020] (2) A controllable water inlet system corresponding to the sudden drop height, the control head rotation angle, the valve opening size and the instantaneous water filling volume is formed. The size of the valve opening in the water inlet device can be adjusted by directly inputting the sudden drop height of the person in the water, thereby realizing the change of the instantaneous water filling volume in the training mask, thereby achieving different degrees of drowning experience.

[0021] (3) Since the valve opening size is adjustable, the training mask can be used for breath-holding training when the valve opening size remains stable (the instantaneous water inflow is stable); when the valve opening size (the instantaneous water inflow changes) changes with the sudden drop in height of the human body, it can be used as a sudden drowning experience device.

[0022] (4) Early warning response device can minimize the corresponding safety risks that may be encountered during training, and at the same time, the effectiveness of drowning training can be evaluated and scored based on the collected data.

[0023] (5) The modular design of the device makes it small in size and easy to disassemble, assemble, carry, use and maintain, and easy to promote on a large scale.

[0024] (6) When learning to swim, overcoming the initial fear of water is an important part of swimming training, and introducing the adaptability of water is the key to learning swimming skills. This device can also provide effective services for the implementation efficiency of this link. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an illustration of a sudden drowning scene.

[0026] Figure 2 This is a diagram of the mask structure.

[0027] Figure 3 It is the structural diagram of the water inlet device.

[0028] Figure 4 This is a diagram of the internal structure of the valve.

[0029] Figure 5 This is a structural diagram of the drainage device.

[0030] Figure 6 It is a structural diagram of the sensor detection device.

[0031] Figure 7 This is a structural diagram of the early warning response device.

[0032] Figure 8 It is the overall structural diagram of the drowning emergency experience and training device.

[0033] Fig. 9 It is the work flow chart of the drowning emergency experience and training device.

[0034] Fig.10 It is a flow chart of evaluation scoring calculation.

[0035] Fig.11 This is the effect diagram obtained by using this device.

[0036] All structure numbers in the figure: 1-mask, 2-water inlet device, 3-drainage device, 4-sensing detection device, 5-early warning response device, 11-frame, 12-sealing ring, 13-water inlet hole, 14-water outlet hole, 15-fixing belt, 16-nose wing sealing layer, 21-water inlet hose, 22-water inlet connector, 23-sealing layer, 24-valve, 25-pure water bucket, 26-fast water pump, 27-switch, 31-drainage hose, 32-drainage connector, 33-water pump, 41-housing, 42-sensor, 43-LCD display, 44-lead-out hole, 51-main switch, 52-LED lamp, 53-buzzer, 54-injection molding box, 55-chip, 56-power supply, 57-access hole. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] A drowning emergency experience and training device comprises five parts: a mask 1, a water inlet device 2, a drainage device 3, a sensor detection device 4 and an early warning reaction device 5, wherein the mask 1 comprises a frame 11, a sealing ring 12, a water inlet hole 13, a water outlet hole 14, a fixing belt 15, and a nose wing sealing layer 16; the water inlet device 2 comprises a water inlet hose 21, a water inlet joint 22, a sealing layer 23, a valve 24, a pure water bucket 25, a fast water pump 26, a switch 27, a chip 55, and a power supply 56; the drainage device 3 comprises a drainage hose 31, a drainage joint 32, a water pump 33, a switch 27, a chip 55, and a power supply 56; the sensor detection device 4 comprises a shell 41, a sensor 42, an LCD display 43, an outlet hole 44, a chip 55, and a power supply 56; the early warning reaction device 5 comprises a main switch 51, an LED lamp 52, a buzzer 53, an injection molding box 54, a chip 55, a power supply 56, and an access hole 57.

[0039] like Figure 1 The process of drowning is as follows: when a person falls into the water unconsciously, water quickly fills the respiratory tract and alveoli, causing hypoxia and suffocation; water absorbed into the blood circulation causes changes in blood osmotic pressure, electrolyte disorders and tissue damage; and finally causes respiratory arrest and cardiac arrest, leading to death. Falling into the water unconsciously and suddenly is often caused by a sudden change in the height of the ground, which causes the body to become unstable.

[0040] like Figure 2, (a) is a front view of the mask 1; (b) is a rear view of the mask 1; (c) is a side view of a person wearing the mask 1; (d) is a diagram of the internal thread of the water outlet 14 of the mask 1. The frame 11 is made of plastic, with a convex part similar to glasses on its upper part, and a convex part similar to a small hill in the middle of the nose area, and a spherical convex shape in the lower part to ensure sufficient water filling; the sealing ring 12 is made of rubber material and is laid around the outer contour of the frame 11; the water inlet 13 is located just above the nose area in the middle of the frame 11 to simulate the scene of the face being hit by the water flow when drowning suddenly; the water outlet 14 is at the bottom of the frame 11 and has an internal thread to increase the drainage rate by the water's own gravity; the fixing belt 15 consists of two parts, which are respectively connected to the left and right sides of the outer edge of the frame 11. The single-sided fixing belt 15 is Y-shaped, and the ends of the left and right fixing belts 15 are connected with buckles, which are buckled together to fix the mask 1; the nose wing sealing layer 16 is located in the nose wing area in the middle of the frame 11, and the experiencer can assemble and disassemble it as needed.

[0041] like Figure 3 , (e) is the overall structure of the water inlet device 2; (f) is the front view of the water inlet connector 22 structure; (g) is the side view of the water inlet connector 22 structure. The sealing layer 23 is tightly attached to the edge of the head end of the water inlet connector 22, and the end of the water inlet connector 22 is connected to a section of water inlet hose 21; the end of the water inlet hose 21 is closely connected to the valve 24; the end of the valve 24 is connected to another section of the water inlet hose 21, and the end of the connected water inlet hose 21 is closely connected to the fast water pump 26, and the two are inserted into the pure water bucket 25; the valve 24, the fast water pump 26, the switch 27, the chip 55 and the power supply 56 are connected by wires. The water inlet connector 22 is fan-shaped, with a long arc cross section at the top and a round surface cross section at the end, connected to the water inlet hose 21, and the water inlet connector 22 is also connected to the water inlet hole 13 on the mask 1.

[0042] like Figure 4 , (h) is the internal structure diagram of valve 24; (i) is the structure diagram of the control rotor inside valve 24 rotated 90° counterclockwise; (j), (k), and (m) are the control rotor structure diagrams inside valve 24. Valve 24 is a double-layer spherical structure with a very small radius difference. The outer layer is a thin spherical surface, the inner layer is a solid sphere, and the middle part is a control rotor with a penetrating structure. There is a protruding control end on the control rotor, and the control end is connected to a steering gear; according to the input drowning person's sudden drop height, the steering gear is used to program the control end, so that the control rotor rotates the corresponding angle to control the valve opening size, and finally changes the instantaneous water filling volume in the mask 1, forming a water inlet controllable system corresponding to the sudden drop height-control rotor rotation angle-valve opening size-instantaneous water filling volume.

[0043] like Figure 5The drainage hose 31 is made of the same material as the water inlet hose 21 of the water inlet device 2, but the diameter of the drainage pipe 31 is larger than that of the water inlet hose 21, which is convenient for rapid drainage; the drainage joint 32 is cylindrical, with a threaded upper outer surface and a smooth lower outer surface. The threaded end is used to connect with the water outlet hole 14 of the mask 1, and the lower end is connected to the drainage hose 31; the end of the drainage hose 31 is connected to the water pump 33 to extract the accumulated water in the mask 1, and the end of the water pump 33 is connected to a section of the drainage hose 31 to drain the accumulated water for water recovery; the water pump 33, the switch 27, the chip 55 and the power supply 56 are electrically connected by wires.

[0044] like Figure 6 The shell 41 is made of plastic, has a square structure and is provided with a lead-out hole 44. The shell 41 is fixed to the upper surface of the frame 11 of the mask 1 by glue; the sensor 42 is tightly attached to the inner wall of the shell 41, and its connecting wire is led out through the lead-out hole 44 of the shell 41 and connected to the chip 55; the LCD display 43 is connected to the chip 55 through a wire; the chip 55 is an ARM chip with a built-in Linux system and an integrated WiFi module, and is connected to the power supply 56 through a wire.

[0045] like Figure 7 , (n) is the internal structure diagram of the early warning reaction device 5; (o) is the appearance display diagram of the early warning reaction device 5. The main switch 51 is an independent module, which is only electrically connected to the chip 55 by a wire; the LED light 52 changes to green, blue and red according to the current status of the person and the breath-holding time to display the status. When the breath-holding time is t<t1, it is displayed in green, when t1≤t≤t2, it is displayed in blue, and when t>t2, it is displayed in red; the buzzer 53 is used to give a warning reminder of abnormal status. When the breath-holding time of the experiencer exceeds the average time, the buzzer 53 makes a sound; the injection molding box 54 is a rectangular parallelepiped and has an access hole 57 on the surface , used to hold LCD display 43, LED lamp 52, buzzer 53 and chip 55. LCD display 43 is attached to the surface of injection molding box 54, LED lamp 52 protrudes from the top surface of injection molding box 54, the sounding end of buzzer 53 protrudes from the front of injection molding box 54, chip 55 is glued to the inside of injection molding box 54 by glue, and external wires must be connected to chip 55 through access hole 57; power supply 56 is powered by 12V DC battery, the outside of power supply 56 is covered with insulating tape and placed inside injection molding box 54.

[0046] like Figure 8, (p) is the overall structural installation diagram of the drowning emergency experience and training device; (q) is the side wearing diagram of the drowning emergency experience and training device as a whole. The water inlet device 2 is connected to the water inlet hole 13 of the mask 1 by a water inlet joint 22 wrapped with a sealing layer 23; the drainage device 3 is connected to the water outlet hole 14 of the mask 1 by a threaded screw connection through the drainage joint 32; the housing 41 of the sensor detection device 4 is fixed to the top of the mask 1 by glue; the early warning reaction device 5 centralizes components such as LED lights 52, buzzers 53, chips 55 and power supplies 56 through an injection molding box 54, and the peripheral equipment: valve 24, fast water pump 26, switch 27, water pump 33 and sensor 42, main switch 51 are electrically connected to the chip 55 and power supply 56 in the injection molding box 54 through wires through the access hole 57, and are finally driven by the power supply 56 to form the drowning emergency experience and training device as a whole.

[0047] Implementation Process

[0048] Step 1: Installation and inspection of water inlet device 2; the sealing layer 23 is tightly attached around the edge of the head end of the water inlet connector 22, and a section of water inlet hose 21 is connected to the end of the water inlet connector 22; the end of the water inlet hose 21 is closely connected to the valve 24; the end of the valve 24 is connected to another section of water inlet hose 21, and the end of the connected water inlet hose 21 is closely connected to the fast water pump 26, and they are inserted into the pure water bucket 25 together; the two poles of the valve 24 are connected to the chip 55, and the wires of the chip 55 are connected to the power supply 56; the two poles of the fast water pump 26 are respectively electrically connected to the NO1 pin of the switch 27 and the power supply 56 by wires; the DC+ pin and DC- pin of the switch 27 are connected to the power supply 56, the IN1 pin is connected to the chip 55, and then the COM1 end of the switch 27 is connected to the power supply 56. Turn on the power supply 56 and check whether the valve 24 and the fast water pump 26 are working normally; check whether there is water flowing out of the connection between the valve 24, the water inlet connector 22 and the water inlet hose 21.

[0049] Step 2 Installation and inspection of drainage device 3; insert the smooth end of drainage connector 32 into the head end of drainage hose 31, and connect the end of drainage hose 31 to water pump 33; connect another section of drainage hose 31 below water pump 33; connect the two poles of water pump 33 to NO2 pin of switch 27 and power supply 56 with wires; connect DC+ pin and DC- pin of switch 27 to power supply 56, connect IN2 pin to chip 55, and then connect COM2 end of switch 27 to power supply 56. Turn on power supply 56 and check whether water pump 33 can drain water normally; check whether water flows out from the connection between water pump 33, drainage connector 32 and drainage hose 31.

[0050] Step 3: Check the air tightness of the mask 1; wear the mask 1 and check whether the sealing ring 12 of the frame 11 fits the face. If there is no abnormality, connect the entire device, otherwise adjust the sealing ring 12 to achieve a sealing effect.

[0051] Step 4: Install and inspect the sensor detection device 4; the housing 41 is fixed to the upper surface of the frame 11 of the mask 1 by gluing; the sensor 42 is closely attached to the inner wall of the housing 41, and its connecting wire is led out through the lead-out hole 44 and connected to the chip 55; the LCD display 43 is connected to the chip 55 by a wire; the chip 55 is connected to the power supply 56 by a wire. Turn on the power supply 56, shake the mask 1, and check whether the sensor 42 works normally.

[0052] Step 5: External structure connection: snap-fit ​​the water inlet device 2 with the water inlet hole 13 of the mask 1 through the water inlet connector 22 of the outer sealing layer 23; screw-fit the drainage device 3 with the water outlet hole 14 of the mask 1 through the drainage connector 32. Turn on the power 56 and check whether there is water flowing out of the two connections.

[0053] Step 6: Install the early warning reaction device 5; open the injection molding box 54, put the LED lamp 52, buzzer 53, chip 55 and power supply 56 into the corresponding positions in the injection molding box 54 and connect them with wires; the main switch 51 is connected to the chip 55 through the access hole 57 with a wire.

[0054] Step 7: Check the overall functionality of the device; turn on the power supply 56, check whether the LED light 52 is green and whether the LCD display 43 is outputting data; if the LED light 52 is not green or lights up in other colors, check whether the line connection is missing or reversed. If the LCD display 43 does not output data or is a black screen, check whether the line connection is normal or adjust the capacitor knob behind the LCD display 43; if there is no abnormality, open the software supporting the device, check whether the relevant instructions can be used normally, whether the software interface data is output normally, and whether the data graph is drawn normally. If there is an abnormality, check whether the IP address is entered correctly; check whether the LED light 52 will realize the transition from green to blue to red in sequence as time increases; shake the mask 1 vigorously to observe whether the LED light 52 flashes red and whether the buzzer 53 triggers an alarm. If there is no abnormality, the device can work normally.

[0055] Step 8: Disassembly of the drowning emergency experience and training device; remove the power supply 56 in the injection molding box, and remove all wires connected to the chip 55; then take out the chip 55, LCD display 43, LED light 52 and buzzer 53 from the injection molding box 54, take out the sensor 42 from the housing 41, and then remove all wires on the switch 27; finally, remove the water inlet device 2 and the drainage device 3 from the mask 1 to complete the device removal.

[0056] During the implementation process, the operation process of a drowning emergency experience and training device is as follows: Fig. 9As shown: After wearing the drowning emergency experience and training device, the server inputs the sudden fall height experienced by the training participants (simulating the fall scene, but the actual human height remains unchanged), and the chip 55 calculates the rotation angle of the control joint in the valve 24 according to the height, and then the water inlet device 2 fills the mask 1 with water. After the water filling is completed, the sensor detection device 4 starts real-time monitoring, and the monitored data is transmitted to the chip 55, and then the chip 55 transmits it to other components and controls it. After the sensor detection device 4 starts detection, the LCD display 43 starts to display the time and score. The LED light 52 starts working at the same time. When the breath-holding time t<t1, the LED light 52 displays green and continues to monitor; when the breath-holding time t1≤t≤t2, the LED light 52 displays blue and continues to monitor; when the breath-holding time t>t2, the LED light 52 displays red and makes an early warning reminder. When the LED light 52 gives an early warning, the buzzer 53 sounds, and the user presses the main switch 51 before the water pump 33 starts to drain water. If the user fails to press the main switch 51 in time, the observer inputs a shutdown command to control the water pump 33, and the program outputs the score. t1 and t2 are characteristic values, and different values ​​can be set for people of different ages and physical conditions.

[0057] The evaluation and scoring calculation process of a drowning emergency experience and training device is as follows: Fig.10 As shown: The assessment score is determined by three basic quantities: height level, shaking level and training time. Enter the height command in the software interface, and the corresponding height weight A can be obtained by judging the height level. i (i=1, 2, 3); The height level is designed to simulate the inconsistency of water flow impact felt by the human face at different falling heights. The higher the height, the higher the corresponding height level. The height weight A i The larger the value, the greater the instantaneous water flow impact force entering the mask 1; the height level corresponds to the height weight A i The value range is 0.6 to 1.0, and users can modify it according to their needs. After determining the height level, the system obtains the shaking weight B by determining the user's shaking degree. i (i=1, 2, 3); The shaking degree level is designed according to the shaking amplitude and frequency of the user. The larger the shaking amplitude and the higher the frequency, the higher the shaking degree and the lower the corresponding weight coefficient; The shaking weight B corresponding to the shaking degree level i The value range is 0.6 to 0.9, and users can modify it according to their needs. i and sway weight B i After that, the system will calculate the training time according to the formula t*A i *B i Calculate the final score.

[0058] The effect of using a drowning emergency experience and training device is as follows Fig.11 As shown, (r) is the test result diagram of level 1-1; (s) is the test result diagram of level 1-3; (t) is the test result diagram of level 3-1; (u) is the test result diagram of level 3-3. In order to verify the reliability and accuracy of this device, relevant experiments were carried out using this device. In the experiment, height levels 1 and 3 and shaking levels 1 and 3 were selected respectively, and four experiments were carried out in pairs. The data result diagram is named after the height level-shaking level. Each test lasts for 20 seconds. At about 15 seconds, the experiencer begins to shake his head (because the shaking of the head of a person is not easy to control quantitatively, there will be a certain deviation in the degree of shaking, but it is still within the corresponding shaking level). Comparing (r) and (s), the height level is the same as 1, the corresponding height weight A1 is the smallest, and the shaking levels are 1 and 3 respectively. The final result shows that at height level 1, the smaller the shaking, the higher the score, that is, under the same height level, the shaking level 1 is 0.372 points higher than the shaking level 3; comparing (t) and (u), the height level is the same as 3, the corresponding height weight A3 is the largest, and the shaking levels are 1 and 3 respectively. The final result shows that at height level 3, the smaller the shaking, the higher the score, and the shaking level 1 is 2.608 points higher than the shaking level 3. Comparing (r) and (t), when the shaking level is the same as 1, the higher the height level, the higher the score, and the difference between the two scores is 7.476 points; comparing (s) and (u) is also the same as the former conclusion. Therefore, the reliability and accuracy of this device are verified through experimental data analysis.

Claims

1. A drowning emergency experience and training device, comprising a mask (1), a water inlet device (2), a water discharge device (3), a sensor detection device (4), and an early warning response device (5); wherein the mask (1) comprises a frame (11), a sealing ring (12), a water inlet hole (13), a water outlet hole (14), a fixing belt (15), and a nose wing sealing layer (16); the sealing ring (12) is laid around the outer contour of the frame (11); the water inlet hole (13) is located in the middle of the frame (11) just above the nose wing area; the water outlet hole (14) is at the bottom of the frame (11); the fixing belt (15) is composed of two parts, which are respectively connected to the frame (11) and the nose wing sealing layer (16). The nose wing sealing layer (16) is located at the nose wing area in the middle of the frame (11); the water inlet device (2) comprises a water inlet hose (21), a water inlet joint (22), a sealing layer (23), a valve (24), a pure water bucket (25), a fast water pump (26), a switch (27), a chip (55) and a power supply (56); the sealing layer (23) is tightly attached to the edge of the front end of the water inlet joint (22); the end of the water inlet joint (22) is connected to a section of the water inlet hose (21); the end of the water inlet hose (21) is closely connected to the valve (24); the end of the valve (24) is further connected to a section of the water inlet hose (21); The end of the water inlet hose (21) is closely connected to the fast water pump (26) and inserted into the pure water bucket (25). The valve (24), the fast water pump (26), the switch (27), the chip (55) and the power supply (56) are connected by wires. The drainage device (3) comprises a drainage hose (31), a drainage connector (32), a water pump (33), a switch (27), a chip (55) and a power supply (56). The lower end of the drainage connector (32) is connected to the drainage hose (31). The end of the drainage hose (31) is connected to the water pump (33). The end of the water pump (33) is further connected to a section of the drainage hose (31). The water pump (33), the switch (27) and the power supply (56) are connected to each other. The switch (27), the chip (55) and the power supply (56) are electrically connected by wires; the sensing detection device (4) comprises a housing (41), a sensor (42), an LCD display (43), an extraction hole (44), a chip (55) and a power supply (56); the housing (41) has an extraction hole (44) on its surface; the sensor (42) is closely attached to the inner wall of the housing (41); a connecting wire of the sensor (42) is extracted through the extraction hole (44) and connected to the chip (55); the LCD display (43) and the chip (55) are connected by wires; and the chip (55) is connected to the power supply (56) by wires;The early warning reaction device (5) comprises a main switch (51), an LED light (52), a buzzer (53), an injection molding box (54), a chip (55), a power supply (56) and an access hole (57). The injection molding box (54) is provided with an access hole (57) on its surface. The main switch (51) is placed outside the injection molding box (54). The LCD display (43) is attached to the outer surface of the injection molding box (54). The LED light (52) protrudes from the top surface of the injection molding box (54). The sounding end of the buzzer (53) protrudes from the front surface of the injection molding box (54). The chip (55) is bonded to the inside of the injection molding box (54). The outside of the power supply (56) is covered with an insulating tape and placed inside the injection molding box (54). The main switch (51), the LED light (52), the buzzer (53), the chip (55) and the power supply (56) are electrically connected by wires. The device (2) is connected to the water inlet hole (13) of the mask (1) by a buckle connection through a water inlet joint (22) wrapped with a sealing layer (23); the drainage device (3) is connected to the water outlet hole (14) of the mask (1) by a threaded screw connection through a drainage joint (32); the housing (41) of the sensing detection device (4) is fixed to the top of the mask (1) by gluing; the early warning reaction device (5) centralizes the LED light (52), the buzzer (53), the chip (55) and the power supply (56) through an injection molding box (54), and the peripheral equipment: the valve (24), the fast water pump (26), the switch (27), the water pump (33) and the sensor (42), the main switch (51) are electrically connected to the chip (55) and the power supply (56) in the injection molding box (54) through the access hole (57) by wires. ; 2. A drowning emergency experience and training device according to claim 1, characterized in that The ends of the fixing belts (15) on both sides are connected with lock buckles; the chip (55) is an ARM chip with a built-in Linux system and an integrated WiFi module; the LED light (52) can display three colors: green, blue and red according to the current state of the person and the breath-holding time, and the buzzer (53) can issue an early warning reminder for abnormal states.

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