Emergency protection device and method for vehicle falling into water, vehicle, equipment and storage medium

Abstract

This application provides an emergency protection device, method, vehicle, equipment, and storage medium for vehicles that have fallen into water. The emergency protection device includes: an air tank with a combined valve body, the combined valve body including an inflation outlet; an inflation solenoid valve assembly including a first air inlet and multiple first air outlets, the first air inlet being connected to the inflation outlets; an airbag device including multiple airbag components distributed around the vehicle body, each airbag component being connected to a first air outlet; and a controller electrically connected to the inflation solenoid valve assembly, used to control the sequential opening of each first air outlet of the inflation solenoid valve assembly according to the vehicle's submersion status, so that each airbag component deploys sequentially, achieving adjustment and control of the vehicle's attitude. Considering the different possible attitudes of the vehicle after falling into water, the airbag deployment combination and timing are specifically designed to achieve attitude adjustment, ensuring that the vehicle faces upwards during buoyancy, keeping the vehicle body as above the water surface as possible, facilitating the opening of the doors, and ensuring personnel self-rescue.

Description

Technical Field

[0001] This application relates to the field of vehicle emergency protection technology, and in particular to an emergency protection device, method, vehicle, equipment and storage medium for vehicles that have fallen into water. Background Technology

[0002] Vehicle submersion accidents pose a significant safety hazard to road traffic. Statistics show that the escape time for occupants after a vehicle falls into water is extremely short, often referred to as the "golden three minutes." Within this brief period, rescue forces are unlikely to reach the scene, making self-rescue and mutual rescue the most effective methods. However, most drivers and passengers lack water escape skills, and existing rescue tools are limited, resulting in occupants being unable to escape in time.

[0003] The process of a vehicle falling into water can be divided into three stages: floating, sinking, and submerging. During the floating stage, the vehicle will be upside down with the front end tilted downwards due to buoyancy. As water enters, the vehicle begins to sink, eventually submerging completely. Current emergency measures mainly rely on passive rescue equipment such as window breakers and seatbelt cutters. These methods have the following significant limitations: 1) The operation is difficult, and the tools are hard to use in underwater environments; 2) It cannot solve the fundamental problem of vehicle sinking; 3) High requirements for physical and mental fitness of personnel. Summary of the Invention

[0004] This application provides an emergency protection device, method, vehicle, equipment, and storage medium for vehicles falling into water, in order to solve at least some of the problems in the related art.

[0005] In a first aspect, embodiments of this application provide an emergency protection device for a vehicle that has fallen into water, comprising: A gas storage tank, wherein the gas storage tank is provided with a combined valve body, the combined valve body including a gas filling outlet; An inflation solenoid valve assembly includes a first air inlet and multiple first air outlets, wherein the first air inlet is connected to the inflation outlets; An airbag device includes multiple airbag components distributed around the vehicle body, and the multiple airbag components are respectively connected to multiple first air outlets. The controller is electrically connected to the inflation solenoid valve group. The controller is used to control the first air outlet of each of the inflation solenoid valve group to open in sequence according to the vehicle's submersion status, so that each airbag component can be deployed in sequence, thereby realizing the adjustment and control of the vehicle's attitude.

[0006] In some alternative embodiments, the airbag assembly includes a fixed arm, an extendable arm, and an airbag, wherein the fixed arm is connected to the first air outlet, the extendable arm is telescopically disposed within the fixed arm, and the airbag is popped outwardly disposed within the extendable arm. The airbag assembly includes a first state and a second state. In the first state, the extendable arm is located inside the fixed arm, and the airbag is located inside the extendable arm. In the second state, at least a portion of the extendable arm extends out of the fixed arm, and the airbag pops out of the extendable arm and deploys.

[0007] In some optional embodiments, the fixed arm is provided with an air chamber and an inflation inlet communicating with the air chamber, and the inflation inlet is connected to the first air outlet. The extendable arm is retractably disposed within the air chamber. In a first state, the extendable arm is located within the air chamber; in a second state, at least a portion of the extendable arm extends out of the air chamber.

[0008] In some alternative embodiments, the inner wall of the air chamber near the inflation inlet is provided with a magnetic element. In a first state, the magnetic element is used to provide a magnetic attraction force to the extension arm to keep the extension arm in the air chamber.

[0009] In some alternative embodiments, the inner wall of the air chamber on the side away from the inflation inlet is provided with a limiting part. In the second state, a part of the extension arm abuts against the limiting part, and the other part extends out of the air chamber.

[0010] In some alternative embodiments, a seal is provided at the end of the limiting portion near the inflation inlet.

[0011] In some optional embodiments, the extendable arm is provided with an airbag chamber, a decompression device, and an airbag outlet. The airbag outlet communicates with the airbag chamber, and the airbag is popped out of the airbag chamber. The decompression device is disposed between the air chamber and the airbag chamber. In a first state, the decompression device is closed, preventing gas in the air chamber from entering the airbag chamber. In a second state, the decompression device is open, allowing gas in the air chamber to enter the airbag chamber, and the airbag pops out of the airbag outlet and extends the extendable arm.

[0012] In some optional embodiments, the pressure reducing device includes a first valve seat, a first elastic element, and a sealing valve core. The first valve seat is disposed at one end of the extension arm near the inflation inlet, and the first valve seat has a first vent communicating with the air chamber. The extension arm has a through-hole receiving cavity, and the two ends of the receiving cavity are respectively connected to the first vent and the air chamber. The sealing valve core and the first elastic element are both disposed in the receiving cavity, and the first elastic element abuts against the sealing valve core. In the first state, the first elastic element provides a pre-tightening force to the sealing valve core, so that the sealing valve core fits tightly against the first valve seat and blocks the first vent. In the second state, the pressure exerted by the gas in the air chamber on the sealing valve core overcomes the pre-tightening force, pushes the sealing valve core to move away from the first valve seat and disengage from the first valve seat, and the gas in the air chamber enters the airbag chamber through the first vent and the receiving cavity to inflate the airbag, so that the airbag pops out of the airbag outlet and unfolds the extension arm.

[0013] In some alternative embodiments, a first pressure relief valve is provided on the side of the fixed arm away from the extended arm for venting gas from the fixed arm; and / or A second pressure relief valve is provided on the side of the extension arm away from the inflation inlet, for discharging gas from the extension arm.

[0014] In some alternative embodiments, a high-pressure inflation line is also included, the high-pressure inflation line comprising: A high-pressure inflation manifold connects the first air inlet to the inflation outlet. Multiple high-pressure inflation tubes connect the airbag assembly to the first air outlet.

[0015] In some optional embodiments, the combined valve body further includes an air inlet, and the emergency protection device further includes an air inlet valve connected to the air inlet; The controller is electrically connected to the inflation valve, and the controller is used to control the inflation valve to inflate the gas storage tank.

[0016] In some optional embodiments, the inflation valve includes a housing, a second valve seat, a one-way valve core, and a second elastic element. The housing is connected to the inflation port. The second valve seat is located at the end of the housing away from the inflation port. The second valve seat has a second vent, which communicates with the external atmosphere and the interior of the housing. The one-way valve core and the second elastic element are both located inside the housing, and the second elastic element abuts against the one-way valve core. When the gas level in the gas tank is not lower than the set value, the second elastic element provides a preload force to the one-way valve core, so that the one-way valve core fits tightly against the second valve seat, blocking the second vent. When the gas level in the gas tank is lower than the set value, the pressure exerted by the gas from the external gas source on the one-way valve core overcomes the preload force, pushes the one-way valve core to move and disengage from the second valve seat, and the gas from the external gas source enters the gas tank through the second vent and the inflation port to inflate the gas tank.

[0017] In some optional embodiments, the combined valve body further includes a jet outlet, and the emergency protection device further includes: A jet solenoid valve assembly, the jet solenoid valve assembly including a second air inlet and a plurality of second air outlets, the second air inlet being connected to the jet outlets; The jetting device includes multiple gas nozzles distributed around the vehicle body, and the multiple gas nozzles are respectively connected to multiple second air outlets; The controller is electrically connected to the jet solenoid valve assembly. The controller is used to control the second air outlets of the jet solenoid valve assembly to open in sequence according to the vehicle's submersion status, so that each gas nozzle can jet propulsion in sequence, thereby adjusting and controlling the vehicle's attitude.

[0018] In some alternative embodiments, a high-pressure jet line is also included, the high-pressure jet line comprising: A high-pressure jet manifold connects the second air inlet to the jet outlet. Multiple high-pressure jet pipes connect the gas nozzle to the second air outlet.

[0019] In some alternative implementations, it also includes: A water-falling monitoring sensor, electrically connected to the controller, is used to monitor the water-falling status of the vehicle, including the water depth and water-falling attitude. A pressure sensor, electrically connected to the controller, is used to monitor the gas pressure inside the gas storage tank.

[0020] Secondly, embodiments of this application provide a vehicle, including a body and an emergency protection device as described in the first aspect, the emergency protection device being installed at the bottom of the body.

[0021] Thirdly, embodiments of this application provide an emergency protection method for a vehicle falling into water, wherein the vehicle includes a body and an airbag device, and the airbag device includes multiple airbag components distributed around the body; the emergency protection method includes: The system obtains the vehicle's submersion status and, based on this status, controls each airbag component to deploy in a specific time sequence, thereby adjusting and controlling the vehicle's posture.

[0022] In some optional embodiments, the vehicle further includes a jetting device comprising a plurality of gas nozzles distributed around the vehicle body; the emergency protection method includes: The system acquires the vehicle's submersion status and, based on this status, controls the airbag components to deploy in a timely manner and the gas nozzles to deliver gas in a timely manner to assist in propulsion, thereby adjusting and controlling the vehicle's attitude.

[0023] In some optional embodiments, controlling the sequential deployment of each airbag assembly and the sequential jet propulsion of each gas nozzle according to the water landing state includes at least one of the following: In the first scenario: when the vehicle is submerged in water and the vehicle's rollover angle is less than the first set angle, all the airbag components are first deployed, and then all the gas nozzles are controlled to spray gas to assist the vehicle, so that the vehicle floats up under the action of airbag buoyancy and gas boost. The second scenario: When the vehicle is submerged in water and its rollover angle is greater than the first set angle and less than the second set angle, the airbag components that are currently positioned at the top are controlled to deploy, so that the vehicle floats up under the buoyancy of the airbags. Control the gas nozzles located below in the current attitude to provide jet propulsion, so that the vehicle will roll over under the action of jet propulsion; When the vehicle's attitude is adjusted to a tilt angle less than the first set angle, the remaining airbag components are controlled to open and the gas nozzles are controlled to provide air jet propulsion, so that the vehicle floats up under the action of airbag buoyancy and air jet propulsion; the first set angle is less than the second set angle. The third scenario: When the vehicle is submerged in water and the vehicle's rollover angle is greater than the second set angle, control the airbag components on either side of the vehicle to open and the gas nozzles on the other side of the vehicle to provide air thrust, so that the vehicle floats up under the buoyancy of the airbags and rolls over under the air thrust. When the vehicle's attitude is adjusted to a tilt angle less than the first set angle, the remaining airbag components are controlled to open and the gas nozzles are controlled to provide air thrust, so that the vehicle floats up under the action of airbag buoyancy and air thrust; the first set angle is less than the second set angle.

[0024] The emergency protection device of this application controls the first air outlet of each air outlet of the inflation solenoid valve group to open in sequence according to the vehicle's submersion status, so that each airbag component deploys in sequence, thereby adjusting and controlling the vehicle's attitude. It takes into account the different possible attitudes of the vehicle after it falls into the water, and designs the airbag opening combination and timing in a targeted manner to achieve attitude adjustment, ensure that the vehicle faces straight upward during the floating process, so that the vehicle body floats on the water surface as much as possible, making it easy to open the car door and effectively ensuring personnel self-rescue.

[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0027] Figure 1 The diagram shown is a structural schematic of an emergency protection device for vehicles falling into water, according to an exemplary embodiment of this application.

[0028] Figure 2 The diagram shown is a structural schematic of a vehicle according to an exemplary embodiment of this application.

[0029] Figure 3 and Figure 4 As shown Figure 1 A magnified view of point A from different perspectives.

[0030] Figure 5 The diagram shown is a structural schematic of an airbag assembly according to an exemplary embodiment of this application.

[0031] Figure 6 and Figure 7 The diagram shown is a schematic representation of the extension process of the extension arm of the airbag assembly according to an exemplary embodiment of this application.

[0032] Figure 8 and Figure 9 The diagram shown is a schematic representation of the inflation process of the airbag in the airbag assembly of an exemplary embodiment of this application.

[0033] Figure 10 The diagram shown is a schematic representation of the airbag deflation process of an airbag assembly according to an exemplary embodiment of this application.

[0034] Figure 11 As shown Figure 1 A magnified view of a portion of point B in the middle.

[0035] Figures 12 to 14 The diagram shows different water-falling postures of a vehicle according to an exemplary embodiment of this application.

[0036] Figure 15 The diagram shown is a structural block diagram of an electronic device according to an exemplary embodiment of this application. Detailed Implementation

[0037] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0038] Currently, there are patents for emergency protection devices for vehicles that have fallen into water, but none of them address the control and adjustment of the vehicle's rising posture. They all rely entirely on the buoyancy of airbags to lift the vehicle. The vehicle's posture after it surfaces is uncertain, and there is no other assistance during the ascent process. The effectiveness of occupants' self-rescue cannot be guaranteed. If the vehicle surfaces in a pitched position, it is difficult or even impossible for the occupants to rescue themselves.

[0039] This application provides an emergency protection device, method, vehicle, equipment, and storage medium for vehicles falling into water, to solve the aforementioned related technical problems. The emergency protection device, method, vehicle, equipment, and storage medium for vehicles falling into water according to this application will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features in the following embodiments and implementations can be combined with each other.

[0040] See Figure 1 As shown, this application embodiment provides a vehicle, including a vehicle body 90 and an emergency protection device 100 for vehicles falling into water. The emergency protection device 100 is installed at the bottom of the vehicle body 90. The emergency protection device 100 is mainly used in the field of automotive passive safety. In typical scenarios such as a vehicle accidentally falling into deep water (such as a lake or river) or being submerged due to a sudden and severe rainstorm, when the vehicle is submerged, it can trigger the inflatable airbag safety device to work, so that the vehicle can quickly float to the surface of the water, which facilitates self-rescue of the occupants and external rescue, reduces the risk of drowning of occupants, and greatly reduces search and rescue costs.

[0041] See Figure 2 As shown, the emergency protection device 100 for vehicles falling into water includes: an air tank 10, an inflation solenoid valve assembly 20, an airbag device 30, and a controller 40. Among them, as... Figure 3 and Figure 4As shown, the gas tank 10 is equipped with a combined valve body 11, which is used for distributing gases from various paths, filling the gas tank, and opening and closing the gas tank outlet. The combined valve body 11 includes an inflation outlet 12. The inflation solenoid valve assembly 20 includes a first air inlet and multiple first air outlets, with the first air inlet connected to the inflation outlet 12. The airbag device 30 includes multiple airbag assemblies 31 distributed around the vehicle body 90, with each airbag assembly 31 connected to a multiple first air outlet of the inflation solenoid valve assembly 20. It is understood that the number of airbag assemblies 31 is the same as the number of first air outlets of the inflation solenoid valve assembly 20, and they are arranged in a one-to-one correspondence. In this embodiment, there are four airbag assemblies 31, distributed at the four corners of the vehicle body 90. Correspondingly, the number of first air outlets of the inflation solenoid valve assembly 20 is also four. The air tank 10 is installed and reliably fixed under the vehicle body. It is used to store high-pressure air with an initial pressure of 30 MPa. It is used to provide an energy source for the strong inflation of the airbag assembly, adjustment of vehicle attitude, and jet boost.

[0042] The controller 40 is electrically connected to the inflation solenoid valve group 20. The controller 40 is used to control the first air outlet of the inflation solenoid valve group 20 to open in sequence according to the vehicle's submersion status, so that each airbag assembly 31 can be deployed in sequence, thereby realizing the adjustment and control of the vehicle's attitude.

[0043] Through the above settings, the emergency protection device 100 of this application controls the first air outlets of the inflation solenoid valve group 20 to open sequentially according to the vehicle's submersion status, so that each airbag assembly 31 deploys sequentially. This achieves adjustment and control of the vehicle's attitude, taking into account the different possible attitudes of the vehicle after it falls into the water. The airbag opening combination and timing are designed in a targeted manner to achieve attitude adjustment, ensuring that the vehicle faces upwards during the buoyancy process, so that the vehicle body 90 floats on the water surface as much as possible, making it easier to open the doors and effectively ensuring personnel self-rescue. It is applicable to scenarios where the vehicle falls into the water or is submerged in heavy rain and cannot be opened for escape, solving the core technical problem of rapid sinking and difficulty in escape after a traditional vehicle falls into the water.

[0044] like Figure 3 and Figure 4 As shown, in some optional embodiments, the combined valve body 11 further includes an air inlet 13, and the emergency protection device further includes an air inlet valve 14 connected to the air inlet 13. The controller 40 is electrically connected to the air inlet valve 14, and the controller 40 is used to control the air inlet valve 14 to inflate the air tank 10. The combined valve body 11 also includes a manual shut-off valve 15, which is used to open and close the air tank, facilitating vehicle maintenance, pipeline replacement, etc. Rotating the valve clockwise opens the air passage, and rotating the valve counterclockwise closes the air passage.

[0045] In some optional embodiments, the emergency protection device 100 further includes a high-pressure inflation pipeline for gas delivery. The high-pressure inflation pipeline includes a high-pressure inflation main pipe 51 and multiple high-pressure inflation branch pipes 52. The high-pressure inflation main pipe 51 connects the first air inlet and the inflation outlet 12 of the inflation solenoid valve assembly 20; that is, the inflation outlet 12 is connected to the first air inlet of the inflation solenoid valve assembly 20 via the high-pressure inflation main pipe 51. The high-pressure inflation branch pipes 52 connect the airbag assembly 31 to the first air outlet of the inflation solenoid valve assembly 20. It is understood that the number of high-pressure inflation branch pipes 52 is the same as the number of airbag assemblies 31 and the number of first air outlets of the inflation solenoid valve assembly 20, and they are arranged in a one-to-one correspondence. In this embodiment, there are four airbag assemblies 31, distributed at the four corners of the vehicle body 90. Correspondingly, there are also four first air outlets of the inflation solenoid valve assembly 20 and four high-pressure inflation branch pipes 52. Each first air outlet of the inflation solenoid valve assembly 20 is equipped with an inflation solenoid valve, which opens in sequence under the control of the controller 40.

[0046] Understandably, the inflation solenoid valve assembly 20 can be fixed under the vehicle body. According to the control strategy of the controller 40, it controls the opening and closing of different high-pressure inflation branches 52, so that the airbag components 31 in different positions are opened in sequence according to the control timing set inside the controller 40.

[0047] like Figure 3 and Figure 4 As shown, in some optional embodiments, the inflation valve 14 includes a housing 141, a second valve seat 142, a one-way valve core 143, and a second elastic element 144. The housing 141 is connected to the inflation port 13. The second valve seat 142 is disposed at the end of the housing 141 away from the inflation port 13, and the second valve seat 142 has a second vent, which communicates with the external atmosphere and the interior of the housing 141. The one-way valve core 143 and the second elastic element 144 are both disposed within the housing 141, and the second elastic element 144 abuts against the one-way valve core 143. Optionally, the second elastic element 144 can be a preloaded spring. One end of the housing 141 is connected to the inflation port 13, one end of the second elastic element 144 abuts against the inner wall of the housing 141, and the other end abuts against the one-way valve core 143. The one-way valve core 143 has a conical structure, and the second vent is a matching conical hole.

[0048] When the gas level in the gas tank 10 is not lower than the set value (which can be understood as the gas level in the gas tank 10 being sufficient and not requiring refilling), the second elastic element 144 provides a pre-tightening force to the one-way valve core 143, so that the one-way valve core 143 fits tightly against the second valve seat 142, blocking the second vent of the second valve seat 142. When the gas level in the gas tank 10 is lower than the set value (which can be understood as the gas level in the gas tank 10 being insufficient and requiring refilling), the pressure exerted by the gas from the external gas source on the one-way valve core 143 overcomes the pre-tightening force of the second elastic element 144, pushing the one-way valve core 143 to move (e.g., ...). Figure 4 (As shown, it moves to the right) and disengages from the second valve seat 142. Gas from an external gas source enters the gas storage tank 10 through the second vent and the inflation port 13 to inflate the gas storage tank 10.

[0049] Understandably, the inflation process of the air tank 10 is as follows: If the compressed air in the air tank 10 is exhausted or the pressure is insufficient, it can be replenished through the inflation valve 14. The inflation valve 14 is a one-way valve fixed to the vehicle body. The housing 141 of the inflation valve 14 is connected to the inflation port 13 of the combined valve body 11 on the air tank 10 through a high-pressure pipeline, which is used to inflate the air tank 10 with an external high-pressure air source and prevent high-pressure gas leakage from the air tank 10. During inflation, the high-pressure gas from the external gas source overcomes the pre-tightening force of the second elastic element 144 on the one-way valve core 143 inside the inflation valve 14, opening the second vent of the second valve seat 142, and then opening the inflation port 13. The high-pressure gas is then injected into the gas storage tank 10. When the combined force of the gas pressure in the gas storage tank 10 and the pre-tightening force of the second elastic element 144 is greater than the inflation pressure, the one-way valve core 143 returns to its original position, and inflation is completed. The combined force of the high-pressure gas in the gas storage tank 10 and the second elastic element 144 causes the one-way valve core 143 to fit tightly against the second valve seat 142, sealing the second vent of the second valve seat 142 and preventing the high-pressure gas from leaking out.

[0050] See Figures 5 to 10 As shown, in some optional embodiments, the airbag assembly 31 includes a fixed arm 32, an extendable arm 33, and an airbag 34. The fixed arm 32 is provided with an inflation inlet 321, which can be connected to the first air outlet of the inflation solenoid valve assembly 20 via a high-pressure inflation branch pipe 52. The extendable arm 33 is telescopically disposed within the fixed arm 32, and the airbag 34 is pop-out disposed within the extendable arm 33.

[0051] Optionally, the airbag 34 can be made of high-strength / engineering-grade TPU thermoplastic polyurethane elastomer, which has good elasticity, toughness, and tensile strength, and can withstand air pressure of 0.5–0.8 MPa, making it suitable for operation at deeper water depths. In this embodiment, there are four airbag components 31, i.e., a total of four fixed arms 32, which are fixed under the vehicle body. The fixed arms 32 are hollow and are used to house the various extension arms 33. Correspondingly, there are four extension arms 33, which are hidden inside their respective fixed arms 32 in the retracted state and can move axially along the fixed arms 32.

[0052] The airbag assembly 31 includes a first state and a second state. For example... Figure 5 As shown, in the first state, the extendable arm 33 is located within the fixed arm 32, and the airbag 34 is located within the extendable arm 33. At this time, the extendable arm 33 is in a retracted state and hidden within its respective fixed arm 32. Figure 9 As shown, in the second state, at least a portion of the extendable arm 33 extends out of the fixed arm 32, and the airbag 34 pops out of the extendable arm 33 and deploys.

[0053] Understandable, Figure 5 In the indicated state, the extendable arms 33 are retracted and hidden within their respective fixed arms 32. When the airbag assembly 31 needs to inflate, the extendable arms 33 move axially along the fixed arms 32, gradually extending out of the fixed arms 32, as shown. Figure 6 As shown, this illustrates the extension process of the extendable arm 33. Once the extendable arm 33 is fully extended, as... Figure 7 As shown. Next, the airbag 34 inside the extendable arm 33 begins to inflate, as... Figure 8 As shown. After the airbag 34 is fully inflated, it fully deploys, as indicated. Figure 9 As shown. When airbag 34 needs to deflate, as... Figure 10 As shown, after the gas in the airbag 34 has been completely released and relaxed, the user can manually retract the airbag 34 back into the extension arm 33 for reuse.

[0054] like Figures 6 to 9 As shown, in some optional embodiments, the fixed arm 32 is provided with an air chamber 322 and an inflation inlet 321 communicating with the air chamber 322. The inflation inlet 321 can be connected to the first air outlet of the inflation solenoid valve assembly 20 via a high-pressure inflation branch pipe 52. The extension arm 33 is telescopically disposed within the air chamber 322. Figure 5 As shown, in the first state, the extendable arm 33 is completely located within the air chamber 322, and the airbag 34 is located within the extendable arm 33. Figure 9 As shown, in the second state, at least a portion of the extendable arm 33 extends out of the air chamber 322, and the airbag 34 pops out of the extendable arm 33 and deploys.

[0055] In some alternative embodiments, the inner wall of the air chamber 322 near the inflation inlet 321 is provided with a magnetic element 323. For example... Figure 5 As shown, in the first state, the magnetic element 323 provides magnetic attraction to the extension arm 33, attracting and locking the extension arm 33 to keep it within the air chamber 322 and preventing it from moving within the fixed arm 32. Optionally, the magnetic element 323 can be a strong magnet.

[0056] like Figure 6 and Figure 7 As shown, in some optional embodiments, the inner wall of the air chamber 322 on the side away from the inflation inlet 321 is provided with a limiting portion 324. In the second state, a portion of the extendable arm 33 abuts against the limiting portion 324 to prevent the extendable arm 33 from disengaging from the fixed arm 32, while the other portion extends out of the air chamber 322. It can be understood that, in situations such as... Figure 7 In the state shown, when the extension arm 33 is fully extended, the left end of the extension arm 33 abuts against the limiting part 324 to prevent the extension arm 33 from disengaging from the fixed arm 32.

[0057] Furthermore, a sealing element 325 is provided at one end of the limiting part 324 near the inflation inlet 321. Optionally, the sealing element 325 can be an O-ring made of fluororubber. Figures 7 to 9 In the state shown, when the extension arm 33 is fully extended, it stops after reaching the limiting part 324. The left end of the extension arm 33 then abuts against the limiting part 324. Under the action of high pressure gas, the extension arm 33 and the limiting part 324 are tightly fitted together, and the seal 325 is compressed, which plays a role in buffering and sealing.

[0058] like Figure 9 to Figure 11 As shown, in some optional embodiments, the extendable arm 33 is provided with an airbag chamber 331 and a decompression device 333 (e.g., Figure 11 (As shown) and an airbag outlet 332, the airbag outlet 332 communicating with the airbag chamber 331, the airbag 34 being pop-outably disposed within the airbag chamber 331. The decompression device 333 is disposed between the air chamber 322 and the airbag chamber 331, as shown. Figure 5 As shown, in the first state, the pressure-reducing device 333 is closed, preventing gas in the air chamber 322 from entering the airbag chamber 331. Figure 9As shown, in the second state, the decompression device 333 opens, allowing gas from the air chamber 322 to enter the airbag chamber 331. The airbag 34 then pops out from the airbag outlet 332 and deploys into the extension arm 33. Optionally, the extension arm 33 has a hollow airbag chamber 331 inside for storing the airbag 34 in its natural state. Each extension arm 33 has two airbags 34, and the airbags 34 are sealed to the extension arm 33. Correspondingly, the outer end of the extension arm 33 has two airbag outlets 332, corresponding to the two airbags 34.

[0059] Further, the pressure reducing device 333 includes a first valve seat 334, a first elastic element 335, and a sealing valve core 336. The first valve seat 334 is disposed at one end of the extension arm 33 near the inflation inlet 321 of the fixed arm 32, and the first valve seat 334 has a first vent that communicates with the air chamber 322. The extension arm 33 has a through-hole, and the two ends of the through-hole are respectively connected to the first vent and the air chamber 331. The sealing valve core 336 and the first elastic element 335 are both disposed in the through-hole, and the first elastic element 335 abuts against the sealing valve core 336. Optionally, the first elastic element 335 can be a pre-tensioned spring, with one end of the first elastic element 335 abutting against the inner wall of the through-hole and the other end abutting against the sealing valve core 336. The sealing valve core 336 has a conical structure, and the first vent is a matching conical hole.

[0060] like Figure 5 As shown, in the first state, the first elastic element 335 provides a preload force to the sealing valve core 336, so that the sealing valve core 336 fits tightly against the first valve seat 334, blocking the first vent of the first valve seat 334. Figure 9 As shown, in the second state, the pressure exerted by the gas in the gas chamber 322 on the sealing valve core 336 overcomes the preload force of the first elastic element 335, pushing the sealing valve core 336 to move away from the first valve seat 334 (e.g., Figure 7 (As shown, it moves to the right) and disengages from the first valve seat 334. The gas in the air chamber 322 enters the airbag chamber 331 through the first vent and the receiving cavity to inflate the airbag 34, so that the airbag 34 pops out of the extension arm from the airbag outlet 332 and unfolds.

[0061] like Figure 10As shown, in some optional embodiments, the fixed arm 32 is provided with a first pressure relief valve 326 on the side away from the extendable arm 33 to discharge gas from the air chamber 322 of the fixed arm 32. The extendable arm 33 is provided with a second pressure relief valve 337 on the side away from the inflation inlet to discharge gas from the air bladder chamber 331 of the extendable arm 33. Optionally, the first pressure relief valve 326 is installed at the rear end of the fixed arm 32, and the second pressure relief valve 337 is installed at the outer end of the extendable arm 33.

[0062] Combination Figures 5 to 7 As shown, the extension process of the extendable arm 33 is as follows: Figure 5 In the shown state, the extendable arms 33 are in a retracted state, hidden within their respective fixed arms 32. The controller 40 controls the opening and closing of different high-pressure inflation branches 52 according to a control strategy, thereby controlling the sequential opening of each first air outlet of the inflation solenoid valve group 20. High-pressure gas from the storage tank 10 rapidly enters the air chamber 322 through the inflation inlet 321 of the fixed arm 32, instantly filling the air chamber 322. The thrust of the high-pressure gas overcomes the magnetic force exerted on the extendable arms 33 by the magnetic component 323, pushing the extendable arms 33 outwards. The extendable arms 33 break through the decorative cover on the vehicle body and extend outwards until they contact the limiting part 324 within the fixed arm 32 and stop. The process is as follows... Figure 6 and Figure 7 As shown. The limiting part 324 is provided with a mounting groove, and the sealing element 325 is an O-ring made of fluororubber, which is embedded in the mounting groove. The high-pressure gas from the gas tank 10 enters the fixed arm 32 and pushes the extension arm 33 to move outward along the axial direction. It stops after reaching the limiting part 324. Under the action of the high-pressure gas, the extension arm 33 and the limiting part 324 are tightly fitted, and the sealing element 325 is compressed, which plays a role in buffering and sealing. The airbag assembly adopts a "fixed arm + extension arm" scheme to keep the airbag away from the vehicle body. The airbag spacing is large and more dispersed, which can improve the stability of the rise.

[0063] Combination Figure 8 and Figure 9As shown, the gas decompression and airbag inflation process is as follows: When the extendable arm 33 is not extended, the sealing valve core 336, under the pre-tightening force of the first elastic element 335, tightly fits against the first valve seat 334 to achieve a seal. When the extendable arm 33 extends out of the vehicle body, as the gas pressure in the air chamber 322 of the fixed arm 32 continuously increases, the pressure of the high-pressure gas acting on the sealing valve core 336 continuously increases, overcoming the pre-tightening force of the first elastic element 335, pushing the sealing valve core 336 to move, further compressing the first elastic element 335, and reducing the gas pressure to achieve decompression. The decompressed gas enters the airbag chamber 331 inside the extendable arm 33. After entering the airbag chamber 331, the decompressed gas rapidly inflates the two airbags 34, overcoming the external liquid pressure, causing the airbags 34 to pop out from the corresponding airbag outlets 332. After reaching the set pressure, the airbags 34 fully deploy, and the process is as follows. Figure 8 and Figure 9 As shown.

[0064] When the combined force of the air pressure inside the airbag chamber 331 and the first elastic element 335 exceeds the high-pressure gas pressure, the sealing valve core 336 sets in and seals the first vent of the first valve seat 334 again. High-pressure gas no longer enters the airbag chamber 331 of the extension arm 33. After the airbag is fully inflated, the high-pressure gas in the air chamber 322 of the fixed arm 32 always acts on one end of the first valve seat 334 of the extension arm 33, making the extension arm 33 and the fixed arm 32 form a single unit. The extension arm 33 will not retract into the fixed arm 32 under external force. Figure 9 The controller 40 controls the inflation solenoid valve group 20 to close, ending the inflation process.

[0065] like Figure 10 As shown, the airbag and extender arm recovery process is as follows: When the rescue is completed, the gas in airbag 34, air chamber 322, and airbag chamber 331 needs to be released into the atmosphere. Loosen the fastening bolt of the second pressure relief valve 337, and the gas in airbag 34 and airbag chamber 331 will be released into the atmosphere. After the gas in airbag 34 has been completely released and relaxed, it can be manually retracted into extender arm 33 for reuse. Then, by loosening the first pressure relief valve 326, the high-pressure gas in air chamber 322 of fixed arm 32 can be completely released so that extender arm 33 can be retracted into fixed arm 32.

[0066] like Figures 2 to 4As shown, in some optional embodiments, the combined valve body 11 further includes a jet outlet 16, and the emergency protection device further includes a jet solenoid valve assembly 60 and a jet device. The jet solenoid valve assembly 60 includes a second air inlet and multiple second air outlets, with the second air inlet connected to the jet outlet 16. The jet device includes multiple gas nozzles 61 distributed around the vehicle body 90, with each gas nozzle 61 connected to a multiple second air outlet of the jet solenoid valve assembly 60. It is understood that the number of gas nozzles 61 is the same as the number of second air outlets of the jet solenoid valve assembly 60, and they are arranged in a one-to-one correspondence. In this embodiment, there are four gas nozzles 61, distributed at the four corners of the vehicle body 90. Correspondingly, the number of second air outlets of the jet solenoid valve assembly 60 is also four.

[0067] The controller 40 is electrically connected to the jet solenoid valve group 60. The controller 40 is used to control the second air outlets of the jet solenoid valve group 60 to open in sequence according to the vehicle's submerged state, so that each gas nozzle 61 jets gas in sequence to assist in propulsion, thereby adjusting and controlling the vehicle's attitude. Combined with the buoyancy provided by the airbag device 30 to the vehicle body, the speed at which the vehicle rises is increased.

[0068] In some optional embodiments, the emergency protection device 100 further includes a high-pressure jet pipeline for gas delivery. The high-pressure jet pipeline includes a high-pressure jet main pipe 53 and multiple high-pressure jet branch pipes 54. The high-pressure jet main pipe 53 connects the second air inlet of the jet solenoid valve assembly 60 to the jet outlet 16; that is, the jet outlet 16 is connected to the second air inlet of the jet solenoid valve assembly 60 via the high-pressure jet main pipe 53. The high-pressure jet branch pipes 54 connect the gas nozzles 61 to the second air outlets of the jet solenoid valve assembly 60. It is understood that the number of high-pressure jet branch pipes 54 is the same as the number of gas nozzles 61 and the number of second air outlets of the jet solenoid valve assembly 60, and they are arranged in a one-to-one correspondence. In this embodiment, there are four gas nozzles 61, distributed at the four corners of the vehicle body 90. Correspondingly, there are also four second air outlets of the jet solenoid valve assembly 60 and four high-pressure jet branch pipes 54. Each second air outlet of the jet solenoid valve assembly 60 is equipped with a jet solenoid valve, which opens sequentially under the control of the controller 40.

[0069] Understandably, the jet solenoid valve assembly 60 can be fixed under the vehicle body. According to the control strategy of the controller 40, it controls the opening and closing of different high-pressure jet branch pipes 54, and uses the gas nozzle 61 to provide jet propulsion, thereby adjusting the vehicle's attitude and helping the vehicle quickly float to the surface after falling into the water. The gas nozzle 61 has a large buffer chamber and a jet surface with multiple small nozzles evenly distributed on the jet surface. After the high-pressure gas in the gas tank 10 enters the buffer chamber, it can be ejected outward from each nozzle on the jet surface of the gas nozzle 61. Because the area of ​​the jet surface acting on the water is large, it can effectively increase the reaction force of the water.

[0070] In some optional embodiments, the emergency protection device 100 further includes a water-fall detection sensor 70 and a barometric pressure sensor 80. The water-fall detection sensor 70 is electrically connected to the controller 40 and is used to monitor the vehicle's water-fall status, including water depth and falling posture. The barometric pressure sensor 80 is electrically connected to the controller 40 and is used to monitor the gas pressure inside the gas storage tank 10. Optionally, as... Figure 2 As shown, the water depth monitoring sensor 70 can be installed at the center of the vehicle body below the vehicle body. It uses a built-in pressure sensor to monitor water depth and a built-in inertial measurement unit (IMU) to measure three-dimensional attitude angles. Figure 3 As shown, the air pressure sensor 80 can be installed on the combined valve body 11.

[0071] The controller 40 is used to receive signals from the water-falling monitoring sensor 70 and the air pressure sensor 80. Based on the vehicle's water depth and its posture after falling into the water, the controller controls the air jet solenoid valve group 60 and the air inflation solenoid valve group 20 to open and close according to the programmed timing sequence. This controls the airbags 34 in different positions to deploy in a timely manner and the gas nozzles 61 in different positions to spray gas in a timely manner, thereby adjusting and controlling the vehicle's rising posture.

[0072] Combination Figures 12 to 14 As shown, the control strategies for airbag deployment and jet propulsion under different vehicle landing postures are as follows: Vehicle submersion attitude determination: After a vehicle falls into water, the submersion monitoring sensor detects changes in water pressure and the three-dimensional attitude of the vehicle after falling into water. When the water pressure reaches 20 kPa (the set value in the controller), the controller detects that the vehicle is in a submersion state. Based on the three-dimensional attitude angle fed back by the sensor, the controller confirms the current submersion attitude of the vehicle (such as upright, pitch, tilt, upside down, and complex combinations of various attitudes) and controls the airbags in different positions to be deployed in different sequences.

[0073] Vehicle Ascent Attitude Adjustment: The controller, based on the vehicle's different submerged positions, controls the airbags in different locations to deploy first. Under the buoyancy of the airbags, the vehicle slowly moves and rises. During the ascent, the controller monitors the vehicle's attitude and controls the corresponding solenoid valves in the jet propulsion solenoid valve assembly to open, allowing high-pressure gas from the gas tank to be ejected through high-pressure gas nozzles. Utilizing the reaction force generated by the jet propulsion in the water, the vehicle moves in the opposite direction. This jet propulsion adjusts the vehicle's attitude. (See...) Figure 12 When the vehicle body is tilted until the cab's angle is within 45° upwards, the controller activates the extension arms of the two airbag components located below, rapidly deploying and inflating the airbags. Figure 13 Under the combined effect of airbag buoyancy and jet thrust, the cab is tilted to face directly upwards. The combined effect of all the airbag buoyancy and all the high-pressure gas nozzles accelerates the vehicle's ascent. (See...) Figure 14 When the water depth detected by the water depth monitoring sensor is lower than the set limit, or the gas pressure sensor detects that the gas pressure in the gas tank is lower than the set limit, the controller shuts off all the solenoid valves in the jet propulsion system, stopping the jet propulsion. Throughout the entire process, the cab remains upright and rises rapidly, ensuring the occupants can quickly escape.

[0074] Forward water landing attitude control strategy: With the vehicle cab facing directly upwards and the angle between the vehicle body plane and the ground within ±30°, and without pitching or tilting, the controller opens all the solenoid valves of the inflation solenoid valve group. The fixed arms of the airbag assembly inflate rapidly, causing all the extension arms to deploy quickly and inflate all airbags. After inflation is complete, all the solenoid valves of the jet propulsion solenoid valve group open, and all high-pressure gas nozzles jet propulsion outwards. Under the combined action of airbag buoyancy and jet propulsion, the vehicle quickly floats to the surface.

[0075] Lateral water landing attitude control strategy: For vehicles facing down (front, rear, right, left), the controller prioritizes opening the two inflatable solenoid valves on the side in contact with the ground in the opposite direction. If the front is down, the two solenoid valves on the rear side open first. If the right is down, the two inflatable solenoid valves on the left side open first. This inflates the two fixed arms at the corresponding positions, extending the extendable arms and inflating the airbags. The airbags then deploy, and the vehicle slowly rises under buoyancy. Once off the ground, the controller opens the two jet solenoid valves below, adjusting the vehicle's attitude via jet propulsion. Then, the controller opens the two inflatable solenoid valves in the opposite direction, rapidly inflating the remaining two fixed arms, causing the two extendable arms to quickly deploy and inflate the airbags. After the vehicle's attitude is corrected, the cab rises to the surface with the combined effect of buoyancy in all four directions and jet propulsion.

[0076] Pitch-down attitude control strategy: After the vehicle falls into the water, it is in a pitch-down attitude, with the top down and the bottom up. The controller controls the two inflation solenoid valves on either side (front side, rear side, or both sides) to open first. For example, if the two inflation solenoid valves on the rear side open first, the vehicle attitude can be adjusted according to the steps of the side-down attitude control strategy, so that the vehicle can quickly float to the surface.

[0077] This application provides an emergency protection method for a vehicle that has fallen into water, wherein the vehicle can be the vehicle described in the above embodiments and implementation methods. Figure 1 and Figure 2 As shown, the vehicle includes a body 90, an airbag device 30, and a jetting device. The airbag device 30 includes multiple airbag assemblies 31 distributed around the body 90. The emergency protection method can be executed by a controller 40.

[0078] The emergency protection method includes: acquiring the vehicle's submersion status, and controlling the airbag components to deploy in a timely manner based on the submersion status, thereby adjusting and controlling the vehicle's attitude. In this way, considering the different possible attitudes of the vehicle after submersion, the airbag deployment combination and timing are specifically designed to achieve attitude adjustment under the buoyancy of the airbags, ensuring that the vehicle faces upwards during ascent, maximizing the surface level of the vehicle body, facilitating the opening of the doors, and effectively guaranteeing self-rescue for personnel.

[0079] In some alternative embodiments, the vehicle may further include a jetting device comprising a plurality of gas nozzles 61 distributed around the vehicle body 90. The emergency protection method may be executed by the controller 40.

[0080] The emergency protection method includes: acquiring the vehicle's submersion status; and, based on the submersion status, controlling the sequential deployment of each airbag assembly and the sequential jet propulsion of each gas nozzle to adjust and control the vehicle's attitude. Thus, by considering the different possible attitudes of the vehicle after submersion, the targeted design of the airbag and gas nozzle deployment combinations and timing achieves attitude adjustment under the combined action of airbag buoyancy and jet propulsion, ensuring that the vehicle faces upwards during ascent, maximizing the surface surface area for easy door opening, and effectively guaranteeing self-rescue.

[0081] In some optional embodiments, controlling the sequential deployment of each airbag assembly and the sequential jet propulsion of each gas nozzle according to the water landing state includes at least one of the following: In the first scenario: when the vehicle is submerged in water and the vehicle's rollover angle is less than a first set angle (e.g., within ±30°), all the airbag components are first deployed, and then all the gas nozzles are controlled to spray gas to assist the vehicle, so that the vehicle floats up under the action of airbag buoyancy and gas thrust.

[0082] The second scenario: When the vehicle is submerged in water and its rollover angle is greater than the first set angle and less than the second set angle (e.g., within ±45°), the airbag components that are currently positioned at the top are controlled to deploy so that the vehicle floats up under the buoyancy of the airbags. Control the gas nozzles located below in the current attitude to provide jet propulsion, so that the vehicle will roll over under the action of jet propulsion; When the vehicle's attitude is adjusted to a tilt angle less than the first set angle, the remaining airbag components are controlled to open and the gas nozzles are controlled to provide air thrust, so that the vehicle floats up under the action of airbag buoyancy and air thrust; the first set angle is less than the second set angle.

[0083] The third scenario: When the vehicle is submerged in water and the vehicle's rollover angle is greater than the second set angle, control the airbag components on either side of the vehicle to open and the gas nozzles on the other side of the vehicle to provide air thrust, so that the vehicle floats up under the buoyancy of the airbags and rolls over under the air thrust. When the vehicle's attitude is adjusted to a tilt angle less than the first set angle, the remaining airbag components are controlled to open and the gas nozzles are controlled to provide air thrust, so that the vehicle floats up under the action of airbag buoyancy and air thrust; the first set angle is less than the second set angle.

[0084] Specifically, in combination Figures 12 to 14 As shown, the control strategies for airbag deployment and jet propulsion in emergency protection methods under different vehicle landing postures are as follows, and all of the following control strategies can be executed by the controller: Vehicle submersion attitude determination: After a vehicle falls into water, the submersion monitoring sensor detects changes in water pressure and the three-dimensional attitude of the vehicle after falling into water. When the water pressure reaches 20kPa (the set value in the controller), it is detected that the vehicle is in the submersion state. Based on the three-dimensional attitude angle fed back by the sensor, the current submersion attitude of the vehicle (such as upright, pitch, tilt, upside down, and complex combinations of various attitudes) is confirmed, so as to control the airbags in different positions to be deployed in different sequences.

[0085] Vehicle Ascent Attitude Adjustment: Based on the vehicle's different submerged posture, airbags in different positions are deployed first. Under the buoyancy of the airbags, the vehicle slowly moves and rises. During the ascent, the vehicle's attitude is monitored, and the corresponding solenoid valves in the jet propulsion solenoid valve group are opened, allowing high-pressure gas from the gas tank to be ejected through high-pressure gas nozzles. The reaction force generated by the jet propulsion on the water causes the vehicle to move in the opposite direction. The vehicle's attitude is adjusted through jet propulsion. (See...) Figure 12When the vehicle body is tilted until the cab's angle is within 45° upwards, the extension arms of the two airbag components located below quickly deploy and inflate the airbags. Figure 13 Under the combined effect of airbag buoyancy and jet thrust, the cab is tilted to face directly upwards. The combined effect of all the airbag buoyancy and all the high-pressure gas nozzles accelerates the vehicle's ascent. (See...) Figure 14 When the water depth detected by the water depth monitoring sensor is lower than the set limit, or when the gas pressure sensor detects that the gas pressure in the gas tank is lower than the set limit, the solenoid valves of the jet propulsion solenoid valve group are shut off, and the jet propulsion stops. Throughout the entire process, the cab remains upright and rises rapidly, ensuring the occupants can quickly save themselves.

[0086] Forward water landing attitude control strategy: With the vehicle cab facing directly upwards and the angle between the vehicle body plane and the ground within ±30°, and without pitching or tilting, all solenoid valves controlling the inflation solenoid valve group are fully open. The fixed arms of the airbag assembly inflate rapidly, causing all extendable arms to deploy quickly and inflate all airbags. After inflation is complete, all solenoid valves controlling the jet propulsion solenoid valve group are fully open, and all high-pressure gas nozzles jet propulsion outwards. Under the combined action of airbag buoyancy and jet propulsion, the vehicle quickly floats to the surface.

[0087] Lateral landing attitude control strategy: For vehicles facing down (front, rear, right, left), the two inflation solenoid valves on the side in contact with the ground open first. If the front is down, the two valves on the rear open first. If the right is down, the two valves on the left open first. The two fixed arms in the corresponding positions inflate, extending the extension arms and inflating the airbags. The airbags then deploy, and the vehicle slowly rises under buoyancy. Once off the ground, the two jet solenoid valves below open, adjusting the vehicle's attitude via jet propulsion. Then, the two inflation solenoid valves in the opposite direction open, rapidly inflating the remaining two fixed arms, causing the two extension arms to quickly deploy and inflate the airbags. After the vehicle's attitude is corrected, the cab rises to the surface with the help of buoyancy in all four directions and jet propulsion.

[0088] Pitch-down attitude control strategy: After the vehicle falls into the water, it will be in a pitch-down attitude, with the top down and the bottom up. Control the two inflation solenoid valves on any side (front side, rear side, or both sides) to open first. For example, control the two inflation solenoid valves on the rear side to open first. Then, the vehicle attitude can be adjusted according to the steps of the side-down attitude control strategy, so that the vehicle can quickly float to the surface.

[0089] The technical solution described above achieves the following technical effects: 1) High-pressure air inflation solution: High-pressure compressed air is used to inflate the airbag. The inflation speed is fast, the principle is simple, safe and environmentally friendly and low cost; the air storage tank, which is a high-pressure gas cylinder, has an inflation port. When the air pressure is insufficient or exhausted, it can be refilled for use.

[0090] 2) Adopting a combination of "airbag + jet attitude adjustment + jet boost": After the vehicle is upright and facing upward, all airbags are deployed and inflated quickly. The buoyancy overcomes the vehicle's own weight and propels the vehicle upward. At the same time, the jet boost under the vehicle is activated. The combined effect of buoyancy and boost greatly increases the vehicle's acceleration as it rises, minimizing the emergency rescue time for vehicles falling into water in deep and harsh scenarios.

[0091] 3) The airbag assembly adopts a "fixed arm + extendable arm" design: the airbag is placed inside the extendable arm, which is installed inside the fixed arm under the vehicle. During operation, high-pressure gas is introduced into the air chamber of the fixed arm, pushing the extendable arm outward. Simultaneously, the airbag inflates and ejects from inside the extendable arm. The extendable arm keeps the airbag further away from the vehicle, improving the stability of the buoyancy process. After the rescue is completed, the high-pressure gas in the airbag and fixed arm is released, and the extendable arm can be retracted into the fixed arm and locked in place by a strong magnetic attraction.

[0092] 4) Dynamic water pressure balance control: This solves the problem of imbalance between external water pressure and internal air pressure when a vehicle enters water. Traditional car doors cannot be opened due to pressure differences. For example, at a water depth of 1m, approximately 1 ton of thrust is required, making it impossible for occupants to open the door and escape. The technical solution of this application can achieve millisecond-level pressure sensing and airbag triggering coordination for rapid triggering.

[0093] 5) Buoyancy Generation and Stability Maintenance: The vehicle's weight, calculated at 3.5t, differs from the density of water, resulting in a sinking acceleration of 0.5–1 m / s². This application utilizes a distributed airbag layout, with multiple airbags arranged around the vehicle to achieve buoyancy ≥ 120% of the vehicle's weight. The airbags can deploy according to the vehicle's different submerged postures, ensuring that the vehicle remains upright and quickly floats to the surface, maintaining stability, whether sinking forward, backward, or sideways. This also enables window operation or door opening, releasing water from the driver's cabin to prevent occupants from drowning.

[0094] 6) Adaptability to extreme scenarios: Different water depths and flow rates have a significant impact on the airbag deployment speed. This application can quickly complete inflation and generate sufficient buoyancy in the shortest possible time (2s to 5s), enabling the vehicle to float to the surface quickly and allowing occupants to receive air supply as soon as possible, effectively reducing the probability of drowning.

[0095] According to embodiments of this application, this application also provides an electronic device and a computer-readable storage medium. The electronic device is intended to represent various forms of digital computers or mobile devices. The digital computer may include a desktop computer, a portable computer, a workbench, a personal digital assistant, a server, a mainframe computer, and other suitable computers. The mobile device may include a tablet computer, a smartphone, a wearable device, etc.

[0096] The electronic device may include at least one processor and a memory communicatively connected to the at least one processor. The memory stores computer instructions executable by the at least one processor, which, when executed, enable the at least one processor to perform the emergency protection method for a vehicle falling into water as described in the above embodiments and implementations.

[0097] A computer-readable storage medium storing computer instructions thereon, the computer instructions being used to cause a computer to execute the emergency protection method for a vehicle falling into water as described in the above embodiments and implementation methods. The computer-readable storage medium provided in this application can be a tangible medium, and may include, but is not limited to, electronic, magnetic, optical, electromagnetic, and other forms of storage media.

[0098] See Figure 15 As shown, the electronic device 500 may include a computing unit 501, a ROM 502 (Read-Only Memory), a RAM 503 (Random Access Memory), a bus 504, and an I / O interface 505 (Input / Output).

[0099] The computing unit 501 can perform various appropriate actions and processes based on the computer program stored in the ROM 502 or the computer program loaded into the RAM 503 from the storage unit 508. The RAM 503 can also store various programs and data required for the operation of the electronic device 500. The computing unit 501, ROM 502, and RAM 503 are interconnected via a bus 504. An I / O interface 505 (Input / Output) is also connected to the bus 504.

[0100] Multiple components in electronic device 500 are connected to I / O interface 505, including: input unit 506, such as keyboard, mouse, etc.; output unit 507, such as various types of monitors, speakers, etc.; storage unit 508, such as disk, optical disk, etc.; and communication unit 509, such as network card, modem, wireless transceiver, etc. Communication unit 509 allows device 500 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0101] The computing unit 501 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 501 include, but are not limited to, CPUs (Central Processing Units), GPUs (Graphics Processing Units), various special-purpose AI (Artificial Intelligence) computing chips, various computing units running machine learning model algorithms, DSPs (Digital Signal Processors), and any suitable processor, controller, microcontroller, etc. The computing unit 501 performs the various methods and processing steps described above, such as an emergency protection method for a vehicle falling into water. For example, in some embodiments, the emergency protection method for a vehicle falling into water can be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as storage unit 508. In some embodiments, part or all of the computer program can be loaded and / or installed on device 500 via ROM 502 and / or communication unit 509. When the computer program is loaded into RAM 503 and executed by the computing unit 501, one or more steps of the methods described above can be performed. Alternatively, in other embodiments, the computing unit 501 may be configured to perform the aforementioned emergency protection method for a vehicle falling into water by any other suitable means (e.g., by means of firmware).

[0102] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An emergency protection device for a vehicle falling into water, characterized in that, include: A gas storage tank, wherein the gas storage tank is provided with a combined valve body, the combined valve body including a gas filling outlet; An inflation solenoid valve assembly includes a first air inlet and multiple first air outlets, wherein the first air inlet is connected to the inflation outlets; An airbag device includes multiple airbag components distributed around the vehicle body, and the multiple airbag components are respectively connected to multiple first air outlets. The controller is electrically connected to the inflation solenoid valve group. The controller is used to control the first air outlet of each of the inflation solenoid valve group to open in sequence according to the vehicle's submersion status, so that each airbag component can be deployed in sequence, thereby realizing the adjustment and control of the vehicle's attitude.

2. The emergency protection device of claim 1, wherein The airbag assembly includes a fixed arm, an extendable arm, and an airbag. The fixed arm is connected to the first air outlet, the extendable arm is telescopically disposed within the fixed arm, and the airbag is popped outwardly disposed within the extendable arm. The airbag assembly includes a first state and a second state. In the first state, the extendable arm is located inside the fixed arm, and the airbag is located inside the extendable arm. In the second state, at least a portion of the extendable arm extends out of the fixed arm, and the airbag pops out of the extendable arm and deploys.

3. The emergency protection device of claim 2, wherein, The fixed arm is provided with an air chamber and an air inlet communicating with the air chamber, and the air inlet is connected to the first air outlet. The extendable arm is retractably disposed within the air chamber. In a first state, the extendable arm is located within the air chamber; in a second state, at least a portion of the extendable arm extends out of the air chamber.

4. The emergency protection device of claim 3, wherein, The inner wall of the air chamber near the inflation inlet is provided with a magnetic element. In the first state, the magnetic element is used to provide magnetic attraction to the extension arm to keep the extension arm in the air chamber.

5. The emergency protection device of claim 3, wherein The inner wall of the air chamber on the side away from the air inlet is provided with a limiting part. In the second state, a part of the extension arm abuts against the limiting part, and the other part extends out of the air chamber.

6. The emergency protection device according to claim 5, characterized in that, The limiting part is provided with a sealing element at one end near the inflation inlet.

7. The emergency protection device according to claim 3, characterized in that, The extendable arm is provided with an airbag chamber, a decompression device, and an airbag outlet. The airbag outlet communicates with the airbag chamber, and the airbag is popped out of the airbag chamber. The decompression device is disposed between the air chamber and the airbag chamber. In a first state, the decompression device is closed, preventing gas in the air chamber from entering the airbag chamber. In a second state, the decompression device is open, allowing gas in the air chamber to enter the airbag chamber, and the airbag pops out of the airbag outlet and extends the extendable arm.

8. The emergency protection device according to claim 7, characterized in that, The pressure reducing device includes a first valve seat, a first elastic element, and a sealing valve core. The first valve seat is disposed at one end of the extension arm near the inflation inlet, and the first valve seat has a first vent that communicates with the air chamber. The extension arm has a through-hole receiving cavity, and the two ends of the receiving cavity are respectively connected to the first vent and the air chamber. The sealing valve core and the first elastic element are both disposed in the receiving cavity, and the first elastic element abuts against the sealing valve core. In the first state, the first elastic element provides a pre-tightening force to the sealing valve core so that the sealing valve core fits tightly against the first valve seat, blocking the first vent. In the second state, the pressure exerted by the gas in the air chamber on the sealing valve core overcomes the pre-tightening force, pushing the sealing valve core to move away from the first valve seat and disengage from the first valve seat. The gas in the air chamber enters the airbag chamber through the first vent and the receiving cavity to inflate the airbag, so that the airbag pops out of the extension arm from the airbag outlet and unfolds.

9. The emergency protection device according to claim 3, characterized in that, A first pressure relief valve is provided on the side of the fixed arm away from the extended arm to release gas from the fixed arm; and / or A second pressure relief valve is provided on the side of the extension arm away from the inflation inlet, for discharging gas from the extension arm.

10. The emergency protection device according to claim 1, characterized in that, It also includes a high-pressure inflation line, which includes: A high-pressure inflation manifold connects the first air inlet to the inflation outlet. Multiple high-pressure inflation tubes connect the airbag assembly to the first air outlet.

11. The emergency protection device according to claim 1, characterized in that, The combined valve body also includes an air inlet, and the emergency protection device also includes an air inlet valve, which is connected to the air inlet. The controller is electrically connected to the inflation valve, and the controller is used to control the inflation valve to inflate the gas storage tank.

12. The emergency protection device according to claim 11, characterized in that, The inflation valve includes a housing, a second valve seat, a one-way valve core, and a second elastic element. The housing is connected to the inflation port. The second valve seat is located at the end of the housing away from the inflation port. The second valve seat has a second vent, which communicates with the external atmosphere and the interior of the housing. The one-way valve core and the second elastic element are both located inside the housing, and the second elastic element abuts against the one-way valve core. When the gas level in the gas tank is not lower than the set value, the second elastic element provides a preload force to the one-way valve core, so that the one-way valve core fits tightly against the second valve seat, blocking the second vent. When the gas level in the gas tank is lower than the set value, the pressure exerted by the gas from the external gas source on the one-way valve core overcomes the preload force, pushes the one-way valve core to move and disengage from the second valve seat, and the gas from the external gas source enters the gas tank through the second vent and the inflation port to inflate the gas tank.

13. The emergency protection device according to claim 1, characterized in that, The combined valve body also includes a jet outlet, and the emergency protection device also includes: A jet solenoid valve assembly, the jet solenoid valve assembly including a second air inlet and a plurality of second air outlets, the second air inlet being connected to the jet outlets; The jetting device includes multiple gas nozzles distributed around the vehicle body, and the multiple gas nozzles are respectively connected to multiple second air outlets; The controller is electrically connected to the jet solenoid valve assembly. The controller is used to control the second air outlets of the jet solenoid valve assembly to open in sequence according to the vehicle's submersion status, so that each gas nozzle can jet propulsion in sequence, thereby adjusting and controlling the vehicle's attitude.

14. The emergency protection device according to claim 13, characterized in that, It also includes a high-pressure jet line, which comprises: A high-pressure jet manifold connects the second air inlet to the jet outlet. Multiple high-pressure jet pipes connect the gas nozzle to the second air outlet.

15. The emergency protection device according to claim 1, characterized in that, Also includes: A water-falling monitoring sensor, electrically connected to the controller, is used to monitor the water-falling status of the vehicle, including the water depth and water-falling attitude. A pressure sensor, electrically connected to the controller, is used to monitor the gas pressure inside the gas storage tank.

16. A vehicle, characterized in that, It includes a vehicle body and an emergency protection device as described in any one of claims 1-15, wherein the emergency protection device is installed at the bottom of the vehicle body.

17. An emergency protection method for a vehicle that has fallen into water, characterized in that, The vehicle includes a body and an airbag system, the airbag system including multiple airbag components distributed around the body; the emergency protection method includes: The system obtains the vehicle's submersion status and, based on this status, controls each airbag component to deploy in a specific time sequence, thereby adjusting and controlling the vehicle's posture.

18. The emergency protection method according to claim 17, characterized in that, The vehicle also includes a jetting device, which comprises multiple gas nozzles distributed around the vehicle body; the emergency protection method includes: The system acquires the vehicle's submersion status and, based on this status, controls the airbag components to deploy in a timely manner and the gas nozzles to deliver gas in a timely manner to assist in propulsion, thereby adjusting and controlling the vehicle's attitude.

19. The emergency protection method according to claim 18, characterized in that, The step of controlling the deployment of each airbag assembly and the sequential ejection of each gas nozzle according to the water landing state includes at least one of the following situations: In the first scenario: when the vehicle is submerged in water and the vehicle's rollover angle is less than the first set angle, all the airbag components are first deployed, and then all the gas nozzles are controlled to spray gas to assist the vehicle, so that the vehicle floats up under the action of airbag buoyancy and gas boost. The second scenario: When the vehicle is submerged in water and its rollover angle is greater than the first set angle and less than the second set angle, the airbag components that are currently positioned at the top are controlled to deploy, so that the vehicle floats up under the buoyancy of the airbags. Control the gas nozzles located below in the current attitude to provide jet propulsion, so that the vehicle will roll over under the action of jet propulsion; When the vehicle's attitude is adjusted to a tilt angle less than the first set angle, the remaining airbag components are controlled to open and the gas nozzles are controlled to provide air jet propulsion, so that the vehicle floats up under the action of airbag buoyancy and air jet propulsion; the first set angle is less than the second set angle. The third scenario: When the vehicle is submerged in water and the vehicle's rollover angle is greater than the second set angle, control the airbag components on either side of the vehicle to open and the gas nozzles on the other side of the vehicle to provide air thrust, so that the vehicle floats up under the buoyancy of the airbags and rolls over under the air thrust. When the vehicle's attitude is adjusted to a tilt angle less than the first set angle, the remaining airbag components are controlled to open and the gas nozzles are controlled to provide air thrust, so that the vehicle floats up under the action of airbag buoyancy and air thrust; the first set angle is less than the second set angle.

20. An electronic device, characterized in that, include: At least one processor; as well as A memory communicatively connected to the at least one processor; wherein the memory stores computer instructions executable by the at least one processor, the computer instructions being executed by the at least one processor to enable the at least one processor to perform the emergency protection method as described in any one of claims 17-19.

21. A computer-readable storage medium storing computer instructions thereon, characterized in that, The computer instructions are used to cause the computer to execute the emergency protection method as described in any one of claims 17-19.

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