Waterproof airbag control methods, vehicles and media

Abstract

This application provides a control method, vehicle, and medium for a flood-resistant airbag, belonging to the automotive field. The method includes: after a water depth detection device detects that the water depth at the vehicle's location has reached a depth threshold, the airbag controller controls a valve to open, allowing the inflation device to inflate the airbag; the water depth detection device determines the water level rise rate at the vehicle's location and sends this rate to the airbag controller; the airbag controller receives the water level rise rate, determines the airbag intake volume matching the rise rate, and determines the actual airbag intake volume based on the valve's historical opening; the airbag controller obtains the difference between the airbag intake volume and the actual intake volume, and based on this difference, uses a PID control method to control the valve opening. This solution maintains the airbag's intake volume at an optimal level, ensuring the vehicle floats relatively stably in water, reducing the occurrence of flooding, and improving vehicle safety.

Description

Technical Field

[0001] This application relates to the automotive field, and in particular to a method for controlling a waterproof airbag, a vehicle, and a medium. Background Technology

[0002] More and more users are choosing vehicles as their mode of transportation. However, during heavy rains, drainage pipes often fail to drain water in time, leading to flooding on roads and frequent instances of vehicles being submerged. Flooded vehicles are highly susceptible to electrical damage, creating safety hazards. Summary of the Invention

[0003] This application provides a method for controlling a flood-resistant airbag, a vehicle, and a medium, ensuring that the airbag's intake volume remains at an optimal level. This guarantees the vehicle floats relatively stably in water, reduces the risk of rollover due to excessive inflation, decreases the likelihood of flooding, and improves vehicle safety. The technical solution is as follows:

[0004] On one hand, a method for controlling a flood-proof airbag is provided, executed by a vehicle. The vehicle includes an airbag, an inflation device, a valve, an airbag controller, and a water depth detection device. The airbag is installed at the bottom of the vehicle. The inflation device is connected to the airbag via a pipe and is used to inflate the airbag through the pipe. The valve is installed at the air outlet of the inflation device. The airbag controller is electrically connected to the valve and is used to control the inflation speed of the inflation device by controlling the opening degree of the valve. The method includes:

[0005] After the water depth detection device detects that the water depth at the vehicle's location has reached a depth threshold, the airbag controller controls the valve to open so that the inflation device inflates the airbag.

[0006] The water depth detection device determines the rate of rise of the water level at the location of the vehicle and sends the rate of rise of the water level to the airbag controller.

[0007] The airbag controller receives the water level rise rate, determines the airbag intake volume matching the water level rise rate, and determines the actual airbag intake volume based on the historical opening of the valve.

[0008] The airbag controller obtains the difference between the airbag intake volume and the actual intake volume, and uses a PID control method to control the opening degree of the valve based on the difference.

[0009] In one possible implementation, the rate of water level rise is inversely proportional to the air intake of the airbag.

[0010] In one possible implementation, the vehicle further includes an air extraction device connected to the airbag via a pipe, and the air extraction device is electrically connected to the airbag controller; the method further includes:

[0011] When the air intake volume of the airbag that matches the rising water level is less than the actual air intake volume, the airbag controller obtains the difference between the air intake volume of the airbag and the actual air intake volume. Based on the difference, the controller uses a PID control method to control the air extraction device to extract the gas from the airbag.

[0012] In one possible implementation, there are multiple airbags distributed under and around the chassis of the vehicle; there are multiple inflation devices and multiple valves; the multiple airbags, multiple inflation devices, and multiple valves correspond one-to-one; the vehicle also includes attitude sensors; the method further includes:

[0013] After the airbag controller receives the airbag deployment command and controls the valve to open, the attitude sensor acquires the vehicle's tilt direction and sends the tilt direction to the airbag controller.

[0014] The airbag controller receives the tilt direction and increases the valve opening of the inflation device for inflating the airbag located in the tilt direction, so that the airbag located in the tilt direction becomes larger.

[0015] On the other hand, a vehicle is provided, the vehicle including an airbag, an inflation device, a valve, an airbag controller, and a water depth detection device, wherein the airbag is installed at the bottom of the vehicle, the inflation device is connected to the airbag via a pipe, the inflation device is used to inflate the airbag through the pipe, the valve is installed at the air outlet of the inflation device, and the airbag controller is electrically connected to the valve and is used to control the inflation speed of the inflation device by controlling the opening degree of the valve;

[0016] The airbag controller is used to control the valve to open after the water depth detection device detects that the water depth at the location of the vehicle has reached a depth threshold, so that the inflation device inflates the airbag.

[0017] The water depth detection device is used to determine the rate of rise of the water level at the location of the vehicle and send the rate of rise of the water level to the airbag controller.

[0018] The airbag controller is also used to receive the water level rise rate, determine the airbag intake volume matching the water level rise rate, and determine the actual airbag intake volume based on the historical opening of the valve.

[0019] The airbag controller is also used to obtain the difference between the airbag intake volume and the actual intake volume, and based on the difference, to control the opening degree of the valve using a PID control method.

[0020] In one possible implementation, the rate of water level rise is inversely proportional to the air intake of the airbag.

[0021] In one possible implementation, the vehicle further includes an air extraction device connected to the airbag via a pipe and electrically connected to the airbag controller.

[0022] The airbag controller is used to obtain the difference between the airbag intake volume and the actual intake volume when the airbag intake volume matched with the water level rise rate is less than the actual intake volume, and based on the difference, use a PID control method to control the air extraction device to extract the gas from the airbag.

[0023] In one possible implementation, there are multiple airbags distributed under and around the chassis of the vehicle, multiple inflation devices, and multiple valves, with each of the multiple airbags, multiple inflation devices, and multiple valves corresponding to one another. The vehicle also includes an attitude sensor.

[0024] The attitude sensor is used to obtain the tilt direction of the vehicle and send the tilt direction to the airbag controller after the airbag controller receives the airbag deployment command and controls the valve to open.

[0025] The airbag controller is also configured to receive the tilt direction and increase the valve opening of the inflation device for inflating the airbag located in the tilt direction, so as to enlarge the airbag located in the tilt direction.

[0026] On the other hand, a computer-readable storage medium is provided, wherein at least one piece of program code is stored in the computer-readable storage medium, the at least one piece of program code being loaded and executed by a processor to implement the control method for the waterproof airbag as described in any of the above implementations.

[0027] On the other hand, a computer program product is provided, the computer program product including at least one piece of program code, the at least one piece of program code being loaded and executed by a processor to implement the control method for the waterproof airbag as described in any of the above implementations.

[0028] The beneficial effects of the technical solutions provided in this application include at least the following:

[0029] This application provides a method for controlling a flood-resistant airbag. An airbag is installed at the bottom of the vehicle. When the water depth at the vehicle's location reaches a certain level, the airbag is deployed. Based on the current rate of water level rise, the airbag's air intake is controlled to maintain an optimal air intake level. This ensures the vehicle floats relatively stably in the water, reduces the risk of the car overturning due to excessive inflation, decreases the likelihood of the vehicle being flooded, and improves vehicle safety. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a vehicle provided in an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the structure of a vehicle provided in an embodiment of this application;

[0033] Figure 3 This is a flowchart of a control method for a waterproof airbag provided in an embodiment of this application. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0035] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0036] This application provides a vehicle including an airbag, an inflation device, a valve, an airbag controller, and a water depth detection device. The airbag is installed at the bottom of the vehicle. The inflation device is connected to the airbag via a pipe and is used to inflate the airbag through the pipe. The valve is installed at the air outlet of the inflation device, and the airbag controller is electrically connected to the valve and is used to control the inflation speed of the inflation device by controlling the opening degree of the valve.

[0037] When the vehicle is in water, the airbag controller can open the valve to allow the inflator to inflate the airbag. Figure 1 A schematic diagram of the vehicle's structure before the airbags inflate is shown. Figure 2 A schematic diagram of the vehicle's structure after the airbags have inflated is shown. According to... Figure 1 and Figure 2 As can be seen, after the airbag is inflated, it can increase the volume of the vehicle and improve its buoyancy, allowing the vehicle to float on the water surface and achieve the purpose of preventing flooding. Therefore, the airbag in this embodiment can be called a flood-proof airbag.

[0038] This application embodiment only limits the airbag to be installed at the bottom of the vehicle and the valve to be installed at the air outlet of the inflation device. The positions of the inflation device, airbag controller, and water depth detection device are not limited; they can be located anywhere on the vehicle. This application embodiment is only for... Figure 1 For example, see [link to example]. Figure 1 Valve 1 is installed at the air outlet of the inflation device 6. The inflation device 6 is connected to the airbag 5 through the pipe 2. Valve 1 and inflation device 6 can be located at the front of the vehicle, while airbag controller 3 and water depth detection device 4 can be located at the rear of the vehicle. Of course, valve 1, inflation device 6, airbag controller 3, and water depth detection device 4 can all be located at the front of the vehicle or at the rear of the vehicle.

[0039] An inflation device is a device for inflating an airbag. In some embodiments, the inflation device is a gas cylinder. A gas cylinder is a pressure vessel with a bottle-shaped main structure, filled with gas. Because the gas pressure inside the gas cylinder is relatively high and different from the external pressure, the gas cylinder releases gas into the airbag after the valve is opened. In some embodiments, the inflation device is an air pump. It should be noted that the inflation device in the embodiments of this application can be any device with an inflation function, and the embodiments of this application do not limit the inflation device.

[0040] A water depth measuring device is a device used to measure water depth. In some embodiments, the water depth measuring device may be a water depth meter, such as an ultrasonic water depth meter, etc., but the embodiments of this application do not limit the water depth measuring device.

[0041] In one possible implementation, the vehicle is capable of both inflating and deflating the airbag. In some embodiments, the vehicle further includes a deflator connected to the airbag via a conduit and electrically connected to an airbag controller. The airbag controller can instruct the deflator to deflate the airbag via the conduit and can also instruct the amount of air deflator to deflat the airbag.

[0042] In some embodiments, the air extraction device may be an air pump, or other devices with air extraction function. This application does not limit the air extraction device.

[0043] In one possible implementation, the vehicle is equipped with multiple airbags, distributed under and around the vehicle's chassis. Correspondingly, the vehicle has multiple inflator devices and multiple valves. The multiple airbags, multiple inflator devices, and multiple valves correspond one-to-one; that is, multiple valves are located at the outlets of multiple inflator devices, and multiple inflator devices are connected to multiple airbags via multiple pipes. In other words, one valve is located at the outlet of one inflator device, one inflator device is connected to one airbag via one pipe, and the airbag controller controls the opening of the valve of one inflator device to control the inflator device to inflate the airbag connected to that inflator device via a pipe.

[0044] In some embodiments, the vehicle further includes an attitude sensor for acquiring the vehicle's attitude. The attitude sensor may be a gyroscope, accelerometer, etc., and this application does not limit the choice of attitude sensor.

[0045] Vehicles may tilt in water, resulting in partial submersion. To avoid this, the method provided in this application detects the vehicle's attitude. When the vehicle tilts, the corresponding airbags are enlarged to restore the vehicle to a level position. In some embodiments, the airbag controller receives an airbag deployment command, controls the valve to open, and then the attitude sensor acquires the vehicle's tilt direction and sends this tilt direction to the airbag controller. The airbag controller receives this tilt direction and increases the valve opening of the inflation device used to inflate the airbags located in that tilt direction, thereby enlarging the airbags in that tilt direction.

[0046] In some embodiments, the vehicle further includes multiple air extraction devices, each corresponding to one of the multiple airbags. The airbag controller receives an airbag deployment command and, after the control valve opens, a posture sensor acquires the vehicle's tilt direction and sends this tilt direction to the airbag controller. The airbag controller receives this tilt direction, increases the valve opening of the inflator used to inflate airbags located in the tilt direction, and controls the airbags located in the opposite direction of the tilt direction to be deflated, thereby enlarging the airbags in the tilt direction and shrinking the airbags in the opposite direction of the tilt direction.

[0047] Figure 3This is a flowchart illustrating a control method for a flood-proof airbag according to an embodiment of this application. This embodiment uses a vehicle as an example for illustrative purposes. The vehicle includes an airbag, an inflation device, a valve, an airbag controller, and a water depth detection device. The airbag is installed at the bottom of the vehicle. The inflation device is connected to the airbag via a pipe and is used to inflate the airbag through the pipe. The valve is installed at the air outlet of the inflation device. The airbag controller is electrically connected to the valve and is used to control the inflation speed of the inflation device by controlling the opening degree of the valve. Figure 3 As shown, the method includes:

[0048] 301. After the water depth detection device detects that the water depth at the vehicle's location has reached the depth threshold, the airbag controller controls the valve to open so that the inflation device can inflate the airbag.

[0049] The depth threshold can be any value, and this application does not limit the depth threshold. In some embodiments, the depth threshold is a value lower than the vehicle chassis height. Since different vehicles have different chassis heights, the depth threshold may be different for different vehicles.

[0050] In one possible implementation, after the water depth detection device detects the water depth at the vehicle's location, it sends the water depth to the airbag controller. The airbag controller compares the water depth with a depth threshold. If the water depth is greater than or equal to the depth threshold, it controls the valve to open so that the inflation device inflates the airbag.

[0051] In another possible implementation, after the water depth detection device detects the water depth at the vehicle's location, it compares the water depth with a depth threshold. If the water depth is greater than or equal to the depth threshold, it sends an airbag deployment command to the airbag controller. In response to receiving the airbag deployment command, the airbag controller controls a valve to open, allowing the inflator to inflate the airbag.

[0052] 302. The water depth detection device determines the rate of rise of the water level at the vehicle's location and sends the rate of rise to the airbag controller.

[0053] During heavy rain, the water level where the vehicle is located is constantly rising, and the water is flowing. The faster the water level rises, the faster the water flows, making the vehicle more unstable and prone to overturning. Therefore, in this embodiment, the rate of water level rise is taken into account when inflating the airbags to ensure that the airbags are inflated to the appropriate amount.

[0054] Among them, the water depth detection device can detect the water depth at the vehicle's location and determine the water level rise rate by the ratio of the water depth at the current location to the water depth at the previous location and the time difference between the current time and the previous time.

[0055] It should be noted that the embodiments of this application are only exemplified by the example of the water depth detection device determining the water level rise rate and sending the water level rise rate to the airbag controller. In another embodiment, the water depth detection device only needs to send the water depth at the vehicle's location to the airbag controller, and the airbag controller determines the water level rise rate based on the water depth received at the current moment and the water depth received at the previous moment.

[0056] 303. The airbag controller receives the water level rise rate, determines the airbag intake volume that matches the water level rise rate, and determines the actual airbag intake volume based on the historical valve opening.

[0057] In one possible implementation, the airbag controller stores a correspondence between water level rise rates and airbag inflation volumes. This correspondence includes multiple water level rise rates and the corresponding airbag inflation volume for each water level rise rate. The airbag controller determines the airbag inflation volume matching the water level rise rate by: determining the water level rise rate closest to that rate from the correspondence, and then determining the airbag inflation volume corresponding to that closest rate as the airbag inflation volume matching that water level rise rate.

[0058] In another possible implementation, the airbag controller stores a functional relationship between the water level rise rate and the airbag inflation volume. The airbag controller determines the airbag inflation volume matched to the water level rise rate by calculating the airbag inflation volume matched to the water level rise rate based on the water level rise rate and the functional relationship.

[0059] It should be noted that the greater the rate of water level rise, the greater the water flow velocity. When the water flow velocity is high, if the vehicle's inflation volume is large, the vehicle is prone to instability and may even overturn. Therefore, in this embodiment, the rate of water level rise is inversely proportional to the airbag inflation volume.

[0060] It should be noted that the embodiments in this application are only illustrative examples of inflating the airbag using an inflation device. In another embodiment, considering that the rate of water level rise is irregular, the optimal air intake of the vehicle's airbag is also irregular. Therefore, the optimal air intake may be less than the actual air intake. To ensure the airbag always maintains the optimal air intake, an air extraction device is installed on the vehicle. This device is connected to the airbag via a pipe and electrically connected to the airbag controller. Optionally, the control method for the flood-resistant airbag further includes: when the airbag air intake matching the rate of water level rise is less than the actual air intake, the airbag controller obtains the difference between the airbag air intake and the actual air intake. Based on this difference, a PID control method is used to control the air extraction device to extract gas from the airbag.

[0061] In some embodiments, when the air intake volume of the airbag matched with the water level rise rate is less than the actual air intake volume, the airbag controller not only controls the air extraction device to extract the gas from the airbag, but also controls the valve of the inflation device to close, so as to prevent the inflation device from inflating the airbag.

[0062] Another point to note is that, since the vehicle also includes an air extraction device, the extraction capacity of the air extraction device should also be considered when determining the actual air intake volume of the airbag. Optionally, the actual air intake volume of the airbag can be determined based on the historical valve opening, including: determining the actual air intake volume of the airbag based on the historical valve opening and the historical extraction capacity of the air extraction device.

[0063] 304. The airbag controller obtains the difference between the airbag intake volume and the actual intake volume. Based on the difference, a PID control method is used to control the valve opening.

[0064] PID (proportional-integral-derivative) control is a control method that uses the given value and the actual output value to form a control deviation, and then combines the deviation proportionally, integrally, and derivatively to form a control quantity to control the controlled object.

[0065] In some embodiments, the principle formula of the PID control method is as follows:

[0066]

[0067] Where e(t) is the difference between the airbag intake volume and the actual intake volume, and u(t) is the change in valve opening. K p K i K d Here, represents the proportional, integral, and derivative control parameters, respectively, and t represents time. Substituting the difference between the airbag's intake volume and the actual intake volume into the above formula yields the change in valve opening. Because the rate of change is very large at the instant the difference is input, the derivative control effect is very strong. Afterward, the derivative control effect rapidly decays, but the integral effect becomes increasingly larger until the steady-state error is eventually eliminated. The PID control method combines the actions of proportional, integral, and derivative control, which can accelerate system response, reduce oscillations, overcome overshoot, and effectively eliminate steady-state error, ensuring that the airbag's intake volume is always at the optimal level. This prevents excessive inflation, which could cause buoyancy changes and lead to vehicle rollover.

[0068] In some embodiments, the vehicle has multiple airbags distributed under and around the vehicle chassis. Correspondingly, there are multiple inflator devices and multiple valves. Each airbag, inflator device, and valve corresponds one-to-one; that is, one valve is installed at the inflation port of one inflator device, and one inflator device is connected to one airbag via a pipe to inflate that airbag. After the water depth detection device detects that the water depth at the vehicle's location has reached a depth threshold, the airbag controller controls the valves of the multiple inflator devices to open, allowing the multiple inflator devices to inflate the multiple airbags. Furthermore, the water depth detection device determines the rising speed of the water level at the vehicle's location and sends this speed to the airbag controller. The airbag controller receives the rising speed and determines the airbag intake volume for each airbag to match the rising speed. Based on the historical opening of the valve of the inflation device corresponding to each airbag, the actual air intake volume of each airbag is determined. For each airbag, the airbag controller obtains the difference between the airbag intake volume matched with the rising speed and the actual air intake volume. Based on this difference, a PID control method is used to control the opening of the valve of the inflation device of that airbag.

[0069] Considering that a vehicle may tilt and sink when it falls into water or drifts with the current during heavy rain, this application provides a method for controlling a flood-resistant airbag to keep the vehicle afloat when tilted. In some embodiments, the vehicle further includes an attitude sensor, and the method further includes: after the airbag controller receives an airbag deployment command and controls the valve to open, the attitude sensor acquires the vehicle's tilt direction and sends the tilt direction to the airbag controller; the airbag controller receives the tilt direction and increases the valve opening of the inflation device used to inflate the airbag located in the tilt direction, thereby enlarging the airbag located in the tilt direction.

[0070] For example, when a car falls into water, the front of the car sinks while the rear floats. At this moment, the vehicle's attitude sensors detect that the vehicle is tilted forward. They then increase the valve opening of the inflator used to inflate the airbags located at the front of the vehicle, causing these airbags to inflate. Because the airbags at the front of the vehicle inflate at a higher rate than the other airbags, they help to lift the front of the car out of the water, allowing the vehicle to float.

[0071] Optionally, when the vehicle tilts, the inflation speed of the airbag in the tilt direction can be increased, and the inflation speed of the airbag in the opposite direction can be decreased. For example, the airbag controller receives the tilt direction, increases the valve opening of the inflation device for inflating the airbag in the tilt direction to make the airbag in that tilt direction larger, and decreases the valve opening of the inflation device for inflating the airbag in the opposite direction.

[0072] For example, when a car falls into water, the front of the car sinks while the rear floats. At this time, the vehicle's attitude sensors detect that the vehicle is tilted forward. Therefore, the valve opening of the inflator for the airbags located at the front of the vehicle is increased, while the valve opening of the inflator for the airbags located at the rear of the vehicle is decreased. Because the airbags at the front of the vehicle inflate at a higher rate than the other airbags, and the airbags at the rear of the vehicle inflate at a lower rate than the other airbags, the airbags at the front of the vehicle are more likely to lift the front of the car out of the water, allowing the vehicle to float.

[0073] The water-flooding airbag control method provided in this application embodiment involves installing an airbag at the bottom of the vehicle. When the water depth at the vehicle's location reaches a certain level, the airbag is deployed. Based on the current rate of water level rise, the airbag's air intake is controlled to maintain an optimal air intake level. This ensures that the vehicle floats relatively stably in the water, reduces the risk of the vehicle overturning due to excessive inflation during the inflation process, decreases the occurrence of vehicle flooding, and improves vehicle safety.

[0074] This application embodiment also provides a vehicle, which includes an airbag, an inflation device, a valve, an airbag controller, and a water depth detection device. The airbag is installed at the bottom of the vehicle, the inflation device is connected to the airbag through a pipe, the inflation device is used to inflate the airbag through the pipe, the valve is installed at the air outlet of the inflation device, and the airbag controller is electrically connected to the valve and is used to control the inflation speed of the inflation device by controlling the opening of the valve.

[0075] The airbag controller is used to control the valve to open after the water depth detection device detects that the water depth at the vehicle's location has reached a depth threshold, so that the inflation device can inflate the airbag.

[0076] The water depth detection device is used to determine the rate of rise of the water level at the vehicle's location and sends the rate of rise to the airbag controller.

[0077] The airbag controller is also used to receive the water level rise rate, determine the airbag intake volume that matches the water level rise rate, and determine the actual airbag intake volume based on the historical valve opening.

[0078] The airbag controller is also used to obtain the difference between the airbag intake volume and the actual intake volume. Based on the difference, a PID control method is used to control the valve opening.

[0079] In one possible implementation, the rate of water level rise is inversely proportional to the air intake of the airbag.

[0080] In one possible implementation, the vehicle also includes an air extraction device connected to the airbag via a pipe and electrically connected to the airbag controller.

[0081] The airbag controller is used to obtain the difference between the airbag intake volume and the actual intake volume when the airbag intake volume matched with the water level rise rate is less than the actual intake volume. Based on the difference, a PID control method is used to control the air extraction device to extract the gas from the airbag.

[0082] In one possible implementation, there are multiple airbags distributed under and around the vehicle chassis, multiple inflation devices, and multiple valves. The multiple airbags, multiple inflation devices, and multiple valves correspond one-to-one. The vehicle also includes attitude sensors.

[0083] The attitude sensor is used to obtain the vehicle's tilt direction after the airbag controller receives the airbag deployment command and controls the valve to open, and then sends the tilt direction to the airbag controller.

[0084] The airbag controller is also used to receive the tilt direction and increase the valve opening of the inflation device for inflating the airbag located in the tilt direction, so that the airbag located in the tilt direction becomes larger.

[0085] This application also provides a computer-readable storage medium storing at least one piece of program code, which is loaded and executed by a processor to implement the control method for the waterproof airbag as described in any of the above implementations.

[0086] This application also provides a computer program product, which includes at least one piece of program code, which is loaded and executed by a processor to implement the control method for the waterproof airbag as described in any of the above implementations.

[0087] In some embodiments, the computer program involved in the present application embodiments may be deployed and executed on a computer device, or executed on multiple computer devices located in one location, or executed on multiple computer devices distributed in multiple locations and interconnected through a communication network. Multiple computer devices distributed in multiple locations and interconnected through a communication network may constitute a blockchain system.

[0088] The above are merely optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A control method of a flood-preventing airbag, characterized by, The method is executed by a vehicle, the vehicle comprising an airbag, an inflator, a valve, an airbag controller and a water depth detection device, wherein the airbag is installed at the bottom of the vehicle, the inflator is connected with the airbag through a pipeline, the inflator is used for inflating the airbag through the pipeline, the valve is installed at the air outlet of the inflator, the airbag controller is electrically connected with the valve, and the airbag controller is used for controlling the inflation speed of the inflator by controlling the opening degree of the valve, and the method comprises the following steps: After the water depth detection device detects that the water depth of the position where the vehicle is located reaches a depth threshold, the airbag controller controls the valve to open, so that the inflator inflates the airbag; The water depth detection device determines the water level rising speed of the position where the vehicle is located, and sends the water level rising speed to the airbag controller; The airbag controller receives the water level rising speed, determines the airbag intake amount matched with the water level rising speed, determines the actual airbag intake amount based on the historical opening degree of the valve; The airbag controller obtains the difference between the airbag intake amount and the actual airbag intake amount, and controls the opening degree of the valve by using a PID control method based on the difference.

2. The method of claim 1, wherein, The water level rising speed is inversely proportional to the airbag intake amount.

3. The method of claim 1, wherein, The vehicle further comprises an air extraction device connected with the airbag through a pipeline, and the air extraction device is electrically connected with the airbag controller; the method further comprises the following steps: When the airbag intake amount matched with the water level rising speed is less than the actual airbag intake amount, the airbag controller obtains the difference between the airbag intake amount and the actual airbag intake amount, and controls the air extraction device to extract the gas in the airbag by using a PID control method based on the difference.

4. The method of claim 1, wherein, The airbag is a plurality of airbags, and the plurality of airbags are distributed below and around the chassis of the vehicle; the inflator is a plurality of inflators; the valve is a plurality of valves; the plurality of airbags, the plurality of inflators and the plurality of valves are one-to-one corresponding; the vehicle further comprises a posture sensor; the method further comprises the following steps: After the airbag controller receives the airbag opening instruction and controls the valve to open, the posture sensor obtains the tilting direction of the vehicle and sends the tilting direction to the airbag controller; The airbag controller receives the tilting direction, increases the opening degree of the valve of the inflator used for inflating the airbag located in the tilting direction, so that the airbag located in the tilting direction becomes larger.

5. A vehicle characterized by comprising: The vehicle comprises an airbag, an inflator, a valve, an airbag controller and a water depth detection device, wherein the airbag is installed at the bottom of the vehicle, the inflator is connected with the airbag through a pipeline, the inflator is used for inflating the airbag through the pipeline, the valve is installed at the air outlet of the inflator, the airbag controller is electrically connected with the valve, and the airbag controller is used for controlling the inflation speed of the inflator by controlling the opening degree of the valve; The airbag controller is used for controlling the valve to open after the water depth detection device detects that the water depth of the position where the vehicle is located reaches a depth threshold, so that the inflator inflates the airbag; The water depth detection device is configured to determine a water level rising speed of a position where the vehicle is located, and send the water level rising speed to the air bag controller. The air bag controller is further configured to receive the water level rising speed, determine an air bag intake amount matched with the water level rising speed, and determine an actual intake amount of the air bag based on a historical opening degree of the valve. The air bag controller is further configured to obtain a difference between the air bag intake amount and the actual intake amount, and control the opening degree of the valve based on the difference by using a PID control method.

6. The vehicle of claim 5, wherein, The water level rising speed is inversely proportional to the air bag intake amount.

7. The vehicle of claim 5, wherein, The vehicle further comprises an air extraction device connected to the air bag through a pipeline, and the air extraction device is electrically connected to the air bag controller. The air bag controller is configured to obtain a difference between the air bag intake amount and the actual intake amount when the air bag intake amount matched with the water level rising speed is less than the actual intake amount, and control the air extraction device to extract gas in the air bag based on the difference by using a PID control method.

8. The vehicle of claim 5, wherein, The air bag controller is configured to obtain a difference between the air bag intake amount and the actual intake amount when the air bag intake amount matched with the water level rising speed is less than the actual intake amount, and control the air extraction device to extract gas in the air bag based on the difference by using a PID control method. The vehicle further comprises a posture sensor. The posture sensor is configured to obtain a tilting direction of the vehicle after the air bag controller receives an air bag opening instruction and controls the valve to open, and send the tilting direction to the air bag controller.

9. A computer-readable storage medium, characterized in that, The air bag controller is further configured to receive the tilting direction, increase the opening degree of the valve of an inflation device for inflating an air bag located in the tilting direction, so as to make the air bag located in the tilting direction larger.

10. A computer program product, characterised in that, The computer readable storage medium stores at least one program code, and the at least one program code is loaded and executed by the processor to implement the control method of the waterproof and flood-proof air bag according to any one of claims 1 to 4. The computer program product comprises at least one program code, and the at least one program code is loaded and executed by the processor to implement the control method of the waterproof and flood-proof air bag according to any one of claims 1 to 4.

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