Tire burst emergency braking control method and device, vehicle and storage medium

Abstract

The invention relates to a tire burst emergency braking control method and device, a vehicle and a storage medium, and belongs to the technical field of vehicle control. The method comprises the steps that monitoring data of the vehicle in the driving process are obtained, and whether the monitoring data meet preset conditions or not is judged; if yes, the tire burst state of the wheels is determined according to the monitoring data, and when the tire burst state is that tire burst happens to the steering wheels, a first tire burst emergency braking control mode of the vehicle is started; wherein the first tire burst emergency braking control mode can be used for braking non-steering wheels; therefore, when tire burst happens to the steering wheels, the non-steering wheels are braked, the vehicle is balanced, the stability of the vehicle is kept, and the safety of the vehicle is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle control, and in particular to a tire blowout emergency braking control method, device, vehicle and storage medium. Background Art

[0002] According to relevant data survey statistics, more than 70% of traffic accidents on highways are caused by tire blowouts on cars traveling at high speeds. In addition, due to the lack of experience in emergency response to tire blowouts, drivers may make wrong operations, which may lead to car destruction and death. Following cars often rear-end collisions, and cars with tire blowouts may collide with surrounding vehicles, causing more serious traffic accidents. Therefore, tire blowout control technology is extremely important.

[0003] In the prior art, once a tire blows out on the steering wheel, there is no control over the braking force of the vehicle. The driver needs to use the brakes to slowly reduce the speed of the vehicle to avoid directional instability during fast driving, which places high demands on the driver's correct emergency response in an emergency. Drivers who lack driving experience instinctively step on the brake pedal to slow down the vehicle. At this time, the braking force on the left and right steering wheels is uneven, which aggravates the directional deflection of the wheels and steering wheel, thereby causing the vehicle to lose directional stability.

[0004] Therefore, it is urgent to propose a tire blowout emergency braking control method, device, vehicle and storage medium to solve the technical problem in the prior art that when a steering wheel has a tire blowout, if the vehicle decelerates, the braking force on the left and right steering wheels is uneven, aggravating the directional deflection of the wheels and the steering wheel, thereby causing the vehicle to lose directional stability. Summary of the invention

[0005] In view of this, it is necessary to provide a tire blowout emergency braking control method, device, vehicle and storage medium to solve the technical problem in the prior art that when a steering wheel has a tire blowout, if the vehicle decelerates, the braking force on the left and right steering wheels is uneven, aggravating the directional deflection of the wheels and steering wheels, thereby causing the vehicle to lose directional stability.

[0006] In order to solve the above problems, the present invention provides a tire blowout emergency braking control method, comprising: Acquire monitoring data of the vehicle during driving, and determine whether the monitoring data meets preset conditions; If yes, determining the tire blowout status according to the monitoring data; When the tire blowout state is a tire blowout of a steering wheel, a first tire blowout emergency braking control mode of the vehicle is activated; the first tire blowout emergency braking control mode is to brake the non-steering wheel.

[0007] In a possible implementation, the monitoring data includes vehicle speed and brake pedal signal; and the determining whether the monitoring data meets a preset condition includes: Determining whether the vehicle speed is greater than a preset speed threshold; If so, then when the brake pedal signal satisfies the preset time condition, it is determined that the monitoring data satisfies the preset condition.

[0008] In a possible implementation, when the vehicle speed is greater than the preset vehicle speed threshold, the method includes: Determine the duration of a single brake application according to the brake pedal signal; Determine whether the duration of the single braking is greater than a preset time threshold; If so, it is determined that the preset time condition is met.

[0009] In a possible implementation, the method further includes: Determining whether to apply the brake according to the brake pedal signal; If yes, apply normal braking force to all wheels.

[0010] In a possible implementation, the monitoring data includes the tire pressure of the steering wheel; and determining the tire blowout state according to the monitoring data includes: Determining whether the tire pressure of the steering wheel is less than a preset tire pressure threshold; If so, it is confirmed that the tire blowout state is that the steering wheel has a tire blowout.

[0011] In a possible implementation, the method further includes: When the tire blowout state is that the non-steering wheel has a tire blowout, determining the wheel that has a tire blowout according to the monitoring data; If the wheels are two coaxial wheels on one side, a second tire blowout emergency braking control mode is activated; the second tire blowout emergency braking control mode outputs normal braking force to the steering wheel and outputs half of the braking force to the non-steering wheel.

[0012] In a possible implementation, after determining the wheel having a tire blowout according to the monitoring data, the following steps are performed: If the wheels are not two coaxial wheels on one side, the normal braking force is output to all wheels.

[0013] On the other hand, the present invention also provides a tire blowout emergency brake control device, comprising: A data monitoring module is used to obtain monitoring data of the vehicle during driving and determine whether the monitoring data meets preset conditions; A data judgment module is used to determine the tire blowout state according to the monitoring data if yes; The mode determination module is used to start the first tire blowout emergency braking control mode of the vehicle when the tire blowout state is a tire blowout of the steering wheel; the first tire blowout emergency braking control mode is to brake the non-steering wheel.

[0014] On the other hand, an embodiment of the present invention discloses a vehicle, comprising: a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program implements the various steps of the above-mentioned tire blowout emergency braking control method embodiment when executed by the processor.

[0015] On the other hand, an embodiment of the present invention discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, each step of the above tire blowout emergency braking control method embodiment is implemented.

[0016] The beneficial effects of the present invention are as follows: by acquiring monitoring data of a vehicle during driving, it can be determined whether the monitoring data meets preset conditions; if so, the tire blowout state of the wheel can be determined based on the monitoring data, and when the tire blowout state is that a tire blowout occurs on a steering wheel, a first tire blowout emergency braking control mode of the vehicle can be activated; wherein, the first tire blowout emergency braking control mode can be to brake the non-steering wheel; thereby, when a tire blowout occurs on the steering wheel, the non-steering wheel can be braked to balance the vehicle, maintain the stability of the vehicle, and improve the safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic flow chart of an embodiment of a tire blowout emergency braking control method provided by the present invention; Figure 2 A schematic diagram of the structure of an embodiment of the overall process provided by the present invention; Figure 3 A schematic structural diagram of an embodiment of a tire blowout emergency brake control device provided by the present invention; Figure 4 A schematic structural diagram of an embodiment of a vehicle provided by the present invention. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0019] like Figure 1 As shown, a specific embodiment of the present invention discloses a tire blowout emergency braking control method, comprising: S101, obtaining monitoring data of the vehicle during driving, and determining whether the monitoring data meets preset conditions; S102: If yes, determine the tire blowout status based on the monitoring data; S103: When the tire blowout state is that the steering wheel has a tire blowout, start a first tire blowout emergency braking control mode of the vehicle; the first tire blowout emergency braking control mode is to brake the non-steering wheel.

[0020] It should be understood that: the tire blowout state is usually manifested as a sudden loss of air pressure in the tire, causing the vehicle to lose control and may even cause a traffic accident. The main causes of tire blowouts include excessive or low tire pressure, severe tire wear, tire aging, and tire puncture by sharp objects. The steering wheel refers to a wheel that can change the direction of movement of the object it carries, and is usually used in vehicles such as airplanes. In a car, the steering wheel alignment refers to the installation of the steering wheel, steering knuckle and front axle of the car with a certain relative position. This installation method is called steering wheel alignment. The steering wheel alignment includes four contents: the kingpin castor angle, the kingpin inclination angle, the front wheel camber angle and the front wheel toe. The non-steering wheel is the other wheel on the car except the steering wheel. The embodiment of the present invention can be applied to any vehicle, and the vehicle can be installed with a vehicle controller, a brake controller and a tire pressure monitoring system. The vehicle controller (Vehicle Control Unit, VCU) is the core technical component of a pure electric vehicle, responsible for managing and coordinating various functions of the vehicle. It is the brain of electric vehicles, responsible for managing the vehicle's power output, energy recovery, and coordination with various onboard vehicles. The brake controller is an important component in the vehicle's electronic control system. It is mainly responsible for controlling the operation of the vehicle's braking system by sensing the vehicle's status and the driver's intention, thereby achieving the acceleration, deceleration, and parking of the vehicle. The brake controller is widely used in the braking systems of various motor vehicles and is an important guarantee for vehicle driving safety. The tire pressure monitoring system (TPMS) is an electronic system used to monitor tire pressure and temperature, designed to ensure driving safety and improve driving experience. The system is mainly divided into two types: indirect and direct. The indirect tire pressure monitoring system compares the speed difference between tires through the wheel speed sensor of the car's ABS system. When the tire pressure decreases, the weight of the vehicle will reduce the tire diameter, resulting in a change in vehicle speed, thereby triggering the alarm system. The advantage of this system is that it is low cost and is suitable for vehicles that have been equipped with an ABS system. The tire pressure monitoring system can not only prevent traffic accidents caused by abnormal tire pressure, but also help car owners save fuel and improve the economy and environmental protection of the vehicle. Statistics show that insufficient tire pressure can increase fuel consumption by 3.3%, so it is very important to always understand the tire condition through the tire pressure monitoring system.

[0021] In a specific embodiment of the present invention, the tire pressure monitoring system can be used as the sensing part, the vehicle controller can be used as the tire blowout emergency brake control part, and the brake controller can be used as the execution part. The data of the vehicle during driving can be monitored in real time to obtain monitoring data, which can include tire pressure, vehicle speed, rotation speed and other data, and then it can be determined whether the monitoring data meets the preset conditions. For example, the vehicle speed and rotation speed can be used to determine whether the vehicle is started. If it is not started, there is no need to start the tire blowout emergency braking strategy; if so, the monitoring data can be analyzed and processed to determine the tire blowout status, wherein the tire pressure controller monitors the tire pressure of the vehicle during driving, so as to determine the tire blowout status. The specific analysis and processing can be set according to the actual situation, and the present invention is not limited here. It is also possible to determine whether the tire blowout state is a blowout of the steering wheel. If so, the vehicle's first tire blowout emergency braking control mode can be activated through the brake controller. The vehicle's first tire blowout emergency braking control mode can be to brake the non-steering wheels. For example, the braking demand is provided to the brake controller, so that when the driver steps on the brake pedal, only the non-steering wheels are braked. Since only the rear wheels of the vehicle are involved in braking, the vehicle's directional instability caused by the difference in braking force between the left and right steering wheels can be avoided.‌

[0022] Compared with the prior art, the monitoring data obtained during the driving of the vehicle provided in this embodiment can determine whether the monitoring data meets the preset conditions; if so, the tire blowout state of the wheel can be determined based on the monitoring data, and when the tire blowout state is that the steering wheel has a tire blowout, the first tire blowout emergency braking control mode of the vehicle can be activated; wherein, the first tire blowout emergency braking control mode can be braking the non-steering wheel; thereby, when the steering wheel has a tire blowout, the non-steering wheel can be braked to balance the vehicle, maintain the stability of the vehicle, and improve the safety of the vehicle.

[0023] In some embodiments of the present invention, the monitoring data includes vehicle speed and brake pedal signal; step S101 includes: Determine whether the vehicle speed is greater than a preset speed threshold; If so, when the brake pedal signal meets the preset time condition, it is determined that the monitoring data meets the preset condition.

[0024] In a specific embodiment of the present invention, the monitoring data also includes the vehicle speed and the brake pedal signal. After obtaining the vehicle speed, the vehicle controller can determine whether the vehicle is in motion. Only when the vehicle speed is higher than the preset speed threshold, other subsequent judgments will be made, and the tire blowout emergency braking control may be activated when a tire blowout occurs. Therefore, it is necessary to determine whether the vehicle speed is greater than the preset speed threshold. If so, when the brake pedal signal meets the preset time condition, it is determined that the monitoring data meets the preset condition. If not, the vehicle's monitoring data is re-acquired and real-time monitoring is re-performed, wherein the preset speed threshold can be set according to actual conditions, and the embodiment of the present invention is not limited here.

[0025] In some embodiments of the present invention, when the vehicle speed is greater than a preset vehicle speed threshold, the method includes: Determine the duration of a single brake application according to the brake pedal signal; Determine whether the duration of a single brake application is greater than a preset time threshold; If so, it is determined that the preset time condition is met.

[0026] In a specific embodiment of the present invention, after obtaining the brake pedal signal, the brake pedal signal can be analyzed, and the brake pedal signal can be analyzed to determine the duration of a single brake application. For example, according to the time the driver applies the brake pedal and the time the brake pedal is continuously applied, the duration of a single brake application can be obtained, and then it can be determined whether the duration of a single brake application is greater than a preset time threshold. If so, it can be determined that the preset time condition is met, and the vehicle controller can determine that the monitoring data meets the preset condition, and then the first tire blowout emergency braking control program will be activated, and the braking demand will be provided to the brake controller, so that when the driver applies the brake pedal, only the non-steering wheels are braked. Since only the rear wheels of the vehicle are involved in braking, the vehicle direction instability caused by the difference in braking force between the left and right steering wheels is avoided. Among them, the preset time threshold can be set according to actual conditions, and the embodiment of the present invention is not limited here.

[0027] In some embodiments of the present invention, the monitoring data includes the tire pressure of the steering wheel; step S102 includes: Determine whether the tire pressure of the steering wheel is less than a preset tire pressure threshold; If so, the tire blowout state is indeed that the steering wheel has a tire blowout.

[0028] In a specific embodiment of the present invention, the monitoring data may include the tire pressure of the steering wheel. The tire pressure controller monitors the tire pressure of the vehicle tire and then determines whether the tire pressure of the steering wheel is less than a preset tire pressure threshold. If so, it can be determined that the steering wheel has a tire blowout and the tire blowout status is determined to be a steering wheel tire blowout, and then a subsequent tire blowout emergency braking control process is performed.

[0029] In some embodiments of the present invention, the method further comprises: Determine whether to apply the brake according to the brake pedal signal; If yes, apply normal braking force to all wheels.

[0030] In a specific embodiment of the present invention, after obtaining the brake pedal signal and determining that the steering wheel has a tire blowout, it is possible to analyze whether the driver has applied the brakes based on the brake pedal signal. Applying the brakes means that the driver has stepped on the brake pedal. If so, the braking system can output braking force to all wheels as normal.

[0031] In some embodiments of the present invention, the method further comprises: When the tire burst state is that the non-steering wheel has a tire burst, the wheel that has a tire burst is determined according to the monitoring data; If the wheels are two coaxial wheels on one side, the second tire blowout emergency braking control mode is activated; the second tire blowout emergency braking control mode outputs normal braking force to the steering wheel and half the braking force to the non-steering wheel.

[0032] In a specific embodiment of the present invention, after obtaining the monitoring data, the wheel that has a tire blowout can be judged according to the monitoring data, thereby determining the tire blowout status. If the tire blowout status is that a non-steering wheel has a tire blowout, the wheel that has a tire blowout can be monitored by the vehicle controller. If the vehicle controller detects that two wheels on a single side of the coaxial axis have tire blowouts at the same time, the second tire blowout emergency braking control mode can be activated. The second tire blowout emergency braking control mode provides the braking demand to the braking controller, so that when the driver steps on the brake pedal, the braking force is normally output to the steering wheel, and the braking force to the non-steering wheel is output at 50%, thereby avoiding vehicle directional instability due to the difference in braking force between the left and right steering wheels.

[0033] In some embodiments of the present invention, after determining the wheel having a tire blowout according to the monitoring data, the method includes: If the wheels are not two coaxial wheels on one side, the normal braking force is output to all wheels.

[0034] In a specific embodiment of the present invention, if the tire blowout state is that a non-steering wheel has a tire blowout, and the vehicle controller detects that two wheels that are not coaxial on one side have tire blowouts at the same time, the vehicle controller maintains a normal braking control request, and the braking controller outputs the original normal braking force, that is, outputs the braking force to all wheels normally.

[0035] In a specific embodiment of the present invention, Figure 2As shown, when the real-time monitoring of the vehicle starts, the monitoring data can be obtained. The monitoring data may include the tire pressure of the steering wheel, the brake pedal signal and the vehicle speed. The three need to be judged. It can be judged first whether the vehicle speed exceeds the preset speed threshold. If not, the braking system can output the braking force to all wheels normally. If yes, it is judged according to the brake pedal signal whether the single braking time is greater than the preset time threshold. If not, the braking system can output the braking force to all wheels normally. If yes, it can be judged by the tire pressure of the steering wheel whether the tire blowout state is a tire blowout of the steering wheel. If yes, the first tire blowout emergency braking control mode can be started. The first tire blowout emergency braking control mode can be braking the non-steering wheel. If not, it can be judged whether the two wheels on the single coaxial side have a tire blowout. If yes, the second tire blowout emergency braking control mode is started. The second tire blowout emergency braking control mode is to output the braking force to the steering wheel normally and output half of the braking force to the non-steering wheel. If not, it can be judged by the tire pressure of the steering wheel whether the tire blowout state is a tire blowout of the steering wheel.

[0036] When the embodiment of the present invention determines that the steering wheel has a tire blowout, if the driver continues to step on the brake pedal, the braking system only performs braking control on the non-steering wheel. When the steering wheel has a tire blowout, if the driver steps on the brake pedal, the braking system performs braking control on all wheels. When the non-steering wheel has a tire blowout, the original braking control is maintained. When no tire blowout occurs, the braking system brakes all wheels and maintains the original braking control, which does not affect the braking performance of the vehicle.

[0037] In order to better implement the tire blowout emergency braking control method in the embodiment of the present invention, based on the tire blowout emergency braking control method, the embodiment of the present invention also provides a tire blowout emergency braking control device, such as Figure 3 As shown, the tire blowout emergency brake control device 300 includes: The data monitoring module 301 is used to obtain monitoring data of the vehicle during driving and determine whether the monitoring data meets the preset conditions; The data judgment module 302 is used to determine the tire blowout state according to the monitoring data; The mode determination module 303 is used to start the first tire blowout emergency braking control mode of the vehicle when the tire blowout state is a tire blowout of the steering wheel; the first tire blowout emergency braking control mode is to brake the non-steering wheel.

[0038] The tire blowout emergency brake control device 300 provided in the above embodiment can implement the technical solution described in the above tire blowout emergency brake control method embodiment. The specific implementation principles of the above modules or units can refer to the corresponding contents in the above tire blowout emergency brake control method embodiment, which will not be repeated here.

[0039] like Figure 4 As shown, the present invention also provides a vehicle accordingly. The vehicle 400 includes a processor 401 , a memory 402 and a display 403 . Figure 4 Only some of the components of the vehicle 400 are shown, but it should be understood that implementation of all of the components shown is not required, and more or fewer components may be implemented instead. The components 401-403 of the vehicle 400 communicate with each other via a system bus.

[0040] In some embodiments of the present invention, when the processor 401 executes the tire blowout emergency brake control program in the memory 402, the following steps may be implemented: Obtain monitoring data of the vehicle during driving and determine whether the monitoring data meets preset conditions; If yes, determine the tire blowout status based on the monitoring data; When the tire blowout state is that the steering wheel has a tire blowout, the first tire blowout emergency braking control mode of the vehicle is activated; the first tire blowout emergency braking control mode is to brake the non-steering wheel.

[0041] It should be understood that: when the processor 401 executes the tire blowout emergency brake control program in the memory 402, in addition to the above functions, other functions may also be implemented, and details may refer to the description of the corresponding method embodiments above.

[0042] Accordingly, an embodiment of the present application also provides a computer-readable storage medium, which is used to store computer-readable programs or instructions. When the program or instructions are executed by a processor, the steps or functions of the tire blowout emergency braking control method provided in the above-mentioned method embodiments can be implemented.

[0043] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware (such as a processor, a controller, etc.) through a computer program, and the computer program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0044] The tire blowout emergency braking control method, device, vehicle and storage medium provided by the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A tire blowout emergency braking control method, characterized in that: include: Acquire monitoring data of the vehicle during driving, and determine whether the monitoring data meets preset conditions; If yes, determining the tire blowout status according to the monitoring data; When the tire blowout state is a tire blowout of a steering wheel, a first tire blowout emergency braking control mode of the vehicle is activated; the first tire blowout emergency braking control mode is to brake the non-steering wheel.

2. The tire blowout emergency braking control method according to claim 1, characterized in that: The monitoring data includes vehicle speed and brake pedal signal; the determining whether the monitoring data meets the preset conditions includes: Determining whether the vehicle speed is greater than a preset speed threshold; If so, then when the brake pedal signal satisfies the preset time condition, it is determined that the monitoring data satisfies the preset condition.

3. The tire blowout emergency braking control method according to claim 2, characterized in that: When the vehicle speed is greater than the preset vehicle speed threshold, the method includes: Determine the duration of a single brake application according to the brake pedal signal; Determine whether the duration of the single braking is greater than a preset time threshold; If so, it is determined that the preset time condition is met.

4. The tire blowout emergency braking control method according to claim 3, characterized in that: The method further comprises: Determining whether to apply the brake according to the brake pedal signal; If yes, apply normal braking force to all wheels.

5. The tire blowout emergency braking control method according to claim 1, characterized in that: The monitoring data includes the tire pressure of the steering wheel; and determining the tire blowout state according to the monitoring data includes: Determining whether the tire pressure of the steering wheel is less than a preset tire pressure threshold; If so, it is confirmed that the tire blowout state is that the steering wheel has a tire blowout.

6. The tire blowout emergency braking control method according to claim 1, characterized in that: The method further comprises: When the tire blowout state is that the non-steering wheel has a tire blowout, determining the wheel that has a tire blowout according to the monitoring data; If the wheels are two coaxial wheels on one side, a second tire blowout emergency braking control mode is activated; the second tire blowout emergency braking control mode outputs normal braking force to the steering wheel and outputs half of the braking force to the non-steering wheel.

7. The tire blowout emergency braking control method according to claim 6, characterized in that: After determining the wheel with a tire blowout according to the monitoring data, the method includes: If the wheels are not two coaxial wheels on one side, the normal braking force is output to all wheels.

8. A tire blowout emergency brake control device, characterized in that: include: A data monitoring module is used to obtain monitoring data of the vehicle during driving and determine whether the monitoring data meets preset conditions; A data judgment module is used to determine the tire blowout state according to the monitoring data if yes; The mode determination module is used to start the first tire blowout emergency braking control mode of the vehicle when the tire blowout state is a tire blowout of the steering wheel; the first tire blowout emergency braking control mode is to brake the non-steering wheel.

9. A vehicle, characterized in that: include: A processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, the steps of the tire burst emergency braking control method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the tire blowout emergency braking control method according to any one of claims 1 to 7 are implemented.

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