Tire burst active braking method and system, vehicle and storage medium

Abstract

The invention relates to the technical field of vehicle safety, and discloses a tire burst active braking method and system, a vehicle and a storage medium. And under the condition that the vehicle tire burst early-warning signal is received, pressure pre-building is conducted based on the brake-by-wire system, so that the vehicle brake pressure is generated in advance. Then, under the condition that the vehicle tire burst signal is received, the vehicle is braked based on the brake pressure through the brake-by-wire system, and compared with a method that under the condition that the vehicle tire burst signal is received, pressure building is carried out based on the brake-by-wire system, and then the vehicle is braked, the braking efficiency is improved; according to the pre-pressure-building method, the pressure building time under the condition that the vehicle tire burst signal is received is shortened, the transmission time is optimized, the brake control effect can be improved, the stability of vehicle control under the tire burst condition is improved, and the life and property safety of personnel on the vehicle under the tire burst working condition is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of vehicle safety technology, and in particular to a tire blowout active braking method, system, vehicle and storage medium. Background Art

[0002] With the development of the automobile industry, tire safety issues, especially tire blowout control, have received more and more attention.

[0003] In the related art, a direct tire pressure sensor is used to monitor tire pressure in real time, and transmits a signal to the CAN bus when a tire bursts. After receiving the tire burst signal, the wire control brake system will brake according to the situation. However, the method in the related art needs to be improved. Summary of the invention

[0004] The embodiments of this specification are intended to solve at least one of the technical problems in the related art to a certain extent. To this end, the embodiments of this specification propose a tire blowout active braking method, system, vehicle and storage medium.

[0005] The present specification provides a method for active braking of a tire blowout, the method comprising:

[0006] When a tire blowout warning signal is received, the brake-by-wire system is used to pre-build pressure to generate vehicle brake pressure in advance.

[0007] When a tire burst signal of the vehicle is received, the vehicle is braked based on the brake pressure through the brake-by-wire system.

[0008] In one embodiment, upon receiving a tire blowout signal of the vehicle, braking the vehicle based on the brake pressure by the brake-by-wire system comprises:

[0009] When the pre-pressure building of the brake-by-wire system is completed, if the tire blowout signal of the vehicle is received, the brake-by-wire system brakes the vehicle based on the brake pressure.

[0010] In one embodiment, controlling the brakes by the brake-by-wire control system to brake the vehicle based on the brake pressure includes:

[0011] A brake command signal is sent to a brake through the brake-by-wire system so as to control the brake to brake the vehicle based on the brake command signal.

[0012] In one embodiment, the vehicle tire blowout warning signal is obtained by:

[0013] Determine the tire pressure change gradient corresponding to each tire of the vehicle within a preset detection cycle;

[0014] When the tire pressure change gradient corresponding to at least one of the tires meets the tire blowout warning condition, the vehicle tire blowout warning signal is generated and sent.

[0015] In one embodiment, determining the tire pressure change gradient corresponding to each tire of the vehicle within a preset detection period includes:

[0016] Obtaining the tire pressure corresponding to each tire of the vehicle;

[0017] According to the tire pressure corresponding to each tire, the tire pressure change gradient of each tire within a preset detection cycle is determined.

[0018] In one embodiment, the vehicle tire blowout signal is obtained by:

[0019] During the tire blowout detection cycle, determine the tire pressure change gradient corresponding to each tire of the vehicle;

[0020] When the tire pressure change gradient corresponding to at least one of the tires meets the real tire blowout condition, the vehicle tire blowout signal is generated and sent.

[0021] The embodiment of this specification provides a tire blowout active braking system, the system comprising:

[0022] The brake-by-wire system is used to pre-build pressure based on the brake-by-wire system to generate vehicle braking pressure in advance when a vehicle tire blowout warning signal is received, and to brake the vehicle based on the braking pressure through the brake-by-wire system when a vehicle tire blowout signal is received.

[0023] In one embodiment, the brake-by-wire system is used to send a brake command signal; the system further comprises:

[0024] a brake, for receiving the brake command signal so as to brake the vehicle based on the brake command signal;

[0025] A tire pressure sensor is used to determine the tire pressure change gradient corresponding to each tire of the vehicle within a preset detection cycle, and generate and send the vehicle tire blowout warning signal and / or the vehicle tire blowout signal when the tire pressure change gradient corresponding to at least one of the tires meets the tire blowout warning condition and / or the actual tire blowout condition;

[0026] The vehicle communication control system is used to receive the tire blowout warning signal and / or the vehicle tire blowout signal, and transmit the tire blowout warning signal and / or the vehicle tire blowout signal to the wire control brake system.

[0027] An embodiment of the present specification provides a vehicle, wherein the vehicle includes a brake-by-wire system, and the brake-by-wire system is used to perform the steps of any one of the above methods.

[0028] The embodiments of this specification provide a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the method described in any of the above embodiments are implemented.

[0029] An embodiment of the present specification provides a computer program product, wherein the computer program product includes instructions, and when the instructions are executed by a processor of a computer device, the computer device is enabled to perform the steps of the method described in any one of the above embodiments.

[0030] In the above-mentioned implementation of the specification, when a vehicle tire blowout warning signal is received, a pre-pressure buildup is performed based on the wire control brake system to generate vehicle brake pressure in advance. Then, when a vehicle tire blowout signal is received, the vehicle is braked based on the brake pressure through the wire control brake system. Compared with the method of building pressure based on the wire control brake system and then braking the vehicle when a vehicle tire blowout signal is received, the pre-pressure buildup method shortens the time of building pressure when a vehicle tire blowout signal is received, optimizes the transmission time, and can not only improve the braking control effect, but also enhance the stability of vehicle control in the case of a tire blowout, and ensure the safety of life and property of people on the vehicle under a tire blowout condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of a process flow of a tire blowout active braking method provided in an embodiment of this specification;

[0032] Figure 2 A schematic diagram of a process for obtaining a vehicle tire blowout warning signal provided in an embodiment of this specification;

[0033] Figure 3 A schematic diagram of a flow chart for determining a tire pressure change gradient within a preset detection cycle provided in an embodiment of this specification;

[0034] Figure 4 A schematic diagram of a process for obtaining a vehicle tire blowout signal provided in an embodiment of this specification;

[0035] Figure 5 A schematic diagram of a tire blowout active braking system provided in an embodiment of this specification;

[0036] Figure 6 A schematic diagram of a scenario example of a tire blowout active braking method provided in an embodiment of this specification;

[0037] Figure 7 A schematic diagram of an active braking device for a tire blowout provided in an embodiment of this specification;

[0038] Figure 8 An internal structural diagram of a computer device provided for an embodiment of this specification. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0040] With the continuous development of the automobile industry, tire safety issues have received more and more attention. Among them, the control research of tire blowout stability is of great significance. First of all, the research on tire blowout stability control helps to improve driving safety. By studying the control technology of tire blowout stability, the occurrence of tire blowout incidents can be effectively reduced, thereby reducing the risk of traffic accidents and ensuring the safety of drivers and passengers. Stability control after a tire blowout requires particularly precise technical support. Specifically, stability control after a tire blowout depends on two key factors: one is the accuracy of the control method, and the other is the time when the controller receives the tire blowout signal from the tire pressure sensor.

[0041] In the related art, a direct tire pressure sensor is used to monitor tire pressure in real time, and transmits a signal to the CAN bus when a tire bursts. After receiving the tire burst signal, the wire control brake system will brake according to the situation.

[0042] Based on this, the embodiments of this specification provide an active braking method for tire blowout. When a vehicle tire blowout warning signal is received, pre-pressure is built up based on the wire control brake system to generate vehicle braking pressure in advance. Then, when a vehicle tire blowout signal is received, the vehicle is braked based on the brake pressure through the wire control brake system. Compared with the method of building pressure based on the wire control brake system and then braking the vehicle when a vehicle tire blowout signal is received, the pre-pressure building method shortens the time of building pressure when a vehicle tire blowout signal is received, optimizes the transmission time, and can not only improve the braking control effect, but also enhance the stability of vehicle control in the case of a tire blowout, and ensure the safety of life and property of people on the vehicle under tire blowout conditions.

[0043] This specification provides a tire blowout active braking method. Figure 1 , the method may include the following steps:

[0044] S110: When a vehicle tire blowout warning signal is received, pre-build pressure based on a brake-by-wire system to generate vehicle brake pressure in advance.

[0045] Specifically, the tire pressure sensor equipped in each tire monitors the tire pressure of the tire in real time. When a sharp drop in tire pressure is detected, or a tire blowout warning is met, the tire pressure sensor generates and sends a vehicle tire blowout warning signal to the vehicle communication control system. The vehicle communication control system receives the vehicle tire blowout warning signal and sends it to the wire control brake system. The wire control brake system has an interface for receiving signals. When the wire control brake system receives the vehicle tire blowout warning signal, it is considered that there is a risk of tire blowout. In order to respond quickly when a tire blowout actually occurs, the wire control brake system will start the pre-pressure building function to prepare for the impending emergency. The wire control brake system calculates the brake pressure according to the dynamic behavior of the vehicle, and quickly adjusts the hydraulic system based on the calculated brake pressure to establish a preset brake pressure to generate the vehicle brake pressure in advance. Exemplarily, the vehicle communication control system can be a CAN or an electronic control unit (ECU). Exemplarily, the pre-built brake pressure can be determined based on the current speed of the vehicle and the maximum braking force required for stopping. The time it takes for the tire pressure sensor to send the vehicle tire blowout warning signal to the vehicle communication control system is generally 375ms. The time it takes for the brake-by-wire system to receive the vehicle's tire blowout warning signal and complete the pre-pressure building is generally 100 milliseconds.

[0046] S120 : When a tire blowout signal is received, the vehicle is braked based on brake pressure by a brake-by-wire system.

[0047] Specifically, the tire pressure sensor equipped in each tire monitors the tire pressure of the tire in real time. When it is detected that the downward trend of tire pressure is consistent with the actual tire blowout situation, the tire pressure sensor will generate and send a vehicle tire blowout signal to the vehicle communication control system. The vehicle communication control system receives the vehicle tire blowout signal and sends it to the wire control brake system. When the wire control brake system receives the vehicle tire blowout signal, the wire control brake system determines the brake pressure of each wheel based on the brake pressure established by the pre-built pressure and the actual demand. Based on the results of real-time analysis, the wire control brake system distributes the brake pressure established by the pre-built pressure to each wheel as needed to brake the vehicle. Exemplarily, the braking range set for a real tire blowout can be to brake the current vehicle speed to 20 kilometers per hour.

[0048] In the above embodiment, when a vehicle tire blowout warning signal is received, a pre-pressure buildup is performed based on the wire control brake system to generate vehicle brake pressure in advance. Then, when a vehicle tire blowout signal is received, the vehicle is braked based on the brake pressure through the wire control brake system. Compared with the method of building pressure based on the wire control brake system and then braking the vehicle when a vehicle tire blowout signal is received, the pre-pressure buildup method shortens the time of building pressure when a vehicle tire blowout signal is received, optimizes the transmission time, and can not only improve the braking control effect, but also enhance the stability of vehicle control in the case of a tire blowout, and ensure the safety of life and property of people on the vehicle under a tire blowout condition.

[0049] In some embodiments, when a vehicle tire blowout signal is received, the vehicle is braked based on brake pressure by a wire control brake system. This may also include: when the wire control brake system completes pre-pressure building, if a vehicle tire blowout signal is received, the vehicle is braked based on brake pressure by the wire control brake system.

[0050] Specifically, when the wire control brake system completes the pre-pressure buildup, it provides basic brake pressure for subsequent braking of the vehicle, allowing for a quick response to a braking request or automatic emergency braking event. When the wire control brake system receives a vehicle tire blowout signal, it means that braking operation is required immediately to ensure the safety of the vehicle and passengers. In this case, the wire control brake system immediately determines the brake pressure of each wheel based on the established brake pressure and actual demand. Based on the results of real-time analysis, the wire control brake system distributes the basic brake pressure to each wheel as needed to brake the vehicle.

[0051] In the above embodiment, when the brake-by-wire system completes pre-pressure building, if a vehicle tire blowout signal is received, the brake-by-wire system immediately brakes the vehicle based on the brake pressure on the basis of the pre-pressure building, ensuring that the vehicle can be braked quickly when a tire blowout occurs.

[0052] In some embodiments, controlling the brake to brake the vehicle based on the brake pressure through the brake-by-wire system may include: sending a brake command signal to the brake through the brake-by-wire system so as to control the brake to brake the vehicle based on the brake command signal.

[0053] Specifically, when a vehicle tire blowout signal is received, the wire control brake system generates a corresponding brake command signal. The brake command signal can be determined based on real-time detected data, such as vehicle speed, tire load, etc., to ensure that the braking response meets actual needs. The generated brake command signal is transmitted to each brake through the wire control brake system. After receiving the brake command signal, the brake starts to perform the braking operation. Each brake will adjust the brake pressure according to the command, thereby accurately braking the vehicle to ensure that the vehicle can effectively slow down or stop within the specified time.

[0054] Exemplarily, the braking command signal may include an execution signal and the magnitude of the braking deceleration to be executed. For example, if the current speed of the vehicle is 100km / h, it needs to decelerate to 20km / h within 3 seconds, and the current required braking deceleration is approximately 0.75g. According to the braking deceleration, the required braking force is calculated (using the formula F=ma), and the braking hydraulic pressure is adjusted accordingly. It should be noted that the braking force of each wheel is adjusted according to the axle load distribution, so except for the tire-bursting wheel, the corresponding braking force of the brakes of other wheels will be different. In addition, the braking force will be adjusted in real time to adapt to changes in vehicle speed to ensure that the braking process is smooth and effective.

[0055] In the above embodiment, a brake command signal is sent to the brake through the wire control brake system, so as to control the brake to brake the vehicle based on the brake command signal, thereby improving the stability and handling performance of the vehicle.

[0056] In some embodiments, see Figure 2 , get the vehicle tire blowout warning signal through the following methods:

[0057] S210: Determine the tire pressure change gradient corresponding to each tire of the vehicle within a preset detection cycle.

[0058] S220: When the tire pressure change gradient corresponding to at least one tire meets the tire blowout warning condition, generate and send a vehicle tire blowout warning signal.

[0059] Specifically, each tire is equipped with a tire pressure sensor, which monitors the tire pressure inside the tire in real time to ensure the safe operation of the vehicle. A tire blowout detection cycle is pre-set according to the actual situation and needs of the vehicle, that is, the tire pressure changes are continuously monitored during this period of time.

[0060] In each preset detection cycle, the tire pressure sensor in each tire will regularly collect the tire pressure of its corresponding tire and calculate the tire pressure change gradient of each tire in the cycle. The calculated pressure change gradient is compared with the tire blowout warning condition. The preset tire blowout warning condition may include a sharply decreasing pressure change rate and a pressure value below a specific threshold. If the tire pressure change gradient corresponding to at least one tire meets the tire blowout warning condition, a vehicle tire blowout warning signal is generated and sent to the vehicle communication control system. Exemplarily, the vehicle communication control system can be a CAN or an electronic control unit (ECU). The preset detection cycle can be a detection cycle, and a detection cycle can include 5 recognition frames, and 1 recognition frame can be 10 milliseconds.

[0061] In the above implementation, within a preset detection cycle, the tire pressure change gradients corresponding to each tire of the vehicle are determined. When the tire pressure change gradient corresponding to at least one tire meets the tire blowout warning condition, a vehicle tire blowout warning signal is generated and sent, so as to detect potential tire blowout risks early and provide the conditions for executing subsequent measures in advance.

[0062] In some embodiments, see Figure 3 , within a preset detection cycle, determining the tire pressure change gradient corresponding to each tire of the vehicle may include the following steps:

[0063] S310: Obtain the tire pressure corresponding to each tire of the vehicle.

[0064] S320: Determine the tire pressure change gradient of each tire within a preset detection cycle according to the tire pressure corresponding to each tire.

[0065] Specifically, during the preset detection cycle, the tire pressure corresponding to each tire of the vehicle is monitored and obtained in real time through the tire pressure sensor in each tire. At the beginning of the preset detection cycle, the initial tire pressure value of each tire is recorded by the tire pressure sensor in each tire. Then, the tire pressure data of each tire is collected regularly during the entire detection cycle, and these data points are recorded continuously to reflect the changing trend of the tire pressure during the detection cycle. At the end of each detection cycle, the tire pressure change gradient of each tire during the preset detection cycle is calculated based on the recorded data.

[0066] In the above implementation, the tire pressure corresponding to each tire of the vehicle is obtained, and the tire pressure change gradient of each tire within a preset detection period is determined based on the tire pressure corresponding to each tire. The tire pressure change of each tire can be obtained and monitored in real time to ensure that potential tire blowout risks are discovered in a timely manner.

[0067] In some embodiments, see Figure 4 , get the vehicle tire burst signal in the following ways:

[0068] S410: Determine the tire pressure change gradient corresponding to each tire of the vehicle within a tire blowout detection cycle.

[0069] S420: When the tire pressure change gradient corresponding to at least one tire meets the actual tire blowout condition, generate and send a vehicle tire blowout signal.

[0070] Specifically, the setting of the tire blowout detection cycle is critical to whether a tire blowout event can be responded to in time. For example, if the tire blowout detection cycle is too long, it will lead to delayed identification of the tire blowout event, thereby increasing the risk of driving. Therefore, a reasonable tire blowout detection cycle is an important factor in ensuring driving safety. In each tire blowout detection cycle, the tire pressure sensor in each tire will regularly collect the tire pressure of its corresponding tire and calculate the tire pressure change gradient of each tire in the cycle. The calculated pressure change gradient is compared with the preset real tire blowout condition. The preset real tire blowout condition may include a sharply decreasing pressure change rate and a pressure value below a specific threshold (such as close to or below atmospheric pressure). If the tire pressure change gradient corresponding to at least one tire meets the real tire blowout condition, a vehicle tire blowout signal is generated and sent to the vehicle communication control system. Exemplarily, the vehicle communication control system can be CAN or an electronic control unit (ECU). The tire blowout detection cycle can be two detection cycles, one detection cycle can include 5 recognition frames, and one recognition frame can be 10 milliseconds.

[0071] In the above embodiment, during the tire blowout detection cycle, the tire pressure change gradients corresponding to each tire of the vehicle are determined, and when the tire pressure change gradient corresponding to at least one tire meets the actual tire blowout condition, a vehicle tire blowout signal is generated and sent so as to quickly take braking measures, reduce accident risks, and improve driving safety.

[0072] In some implementations, the actual tire blowout condition includes: within a tire blowout detection cycle, the tire pressure corresponding to at least one tire drops to atmospheric pressure.

[0073] Specifically, during each tire blowout detection cycle, the tire pressure sensor in each tire will regularly collect the tire pressure of its corresponding tire. If the tire pressure corresponding to at least one tire drops to atmospheric pressure quickly during the detection cycle, the real tire blowout condition is met, and it is determined that the tire whose tire pressure drops to atmospheric pressure is in a real tire blowout state.

[0074] This specification provides a tire blowout active braking system 500, see Figure 5 The tire blowout active braking system 500 may include:

[0075] The brake-by-wire system 510 is used to pre-build pressure based on the brake-by-wire system to generate vehicle braking pressure in advance when a vehicle tire blowout warning signal is received, and to brake the vehicle based on the braking pressure through the brake-by-wire system when a vehicle tire blowout signal is received.

[0076] Specifically, the tire pressure sensor 530 equipped in each tire monitors the tire pressure of the tire in real time. When a sharp drop in tire pressure is detected, or a tire blowout warning is met, the tire pressure sensor 530 will generate and send a vehicle tire blowout warning signal to the vehicle communication control system 540. The vehicle communication control system 540 receives the vehicle tire blowout warning signal and sends it to the wire control brake system 510. The wire control brake system 510 has an interface for receiving signals. When the wire control brake system 510 receives the vehicle tire blowout warning signal, it is considered that there is a risk of tire blowout. In order to respond quickly when an actual tire blowout occurs, the wire control brake system 510 will start the pre-pressure building function to prepare for an impending emergency. The wire control brake system 510 calculates the brake pressure according to the dynamic behavior of the vehicle, and quickly adjusts the hydraulic system based on the calculated brake pressure to establish a preset brake pressure to generate the vehicle brake pressure in advance.

[0077] The tire pressure sensor 530 installed in each tire monitors the tire pressure of the tire in real time. When it is detected that the downward trend of tire pressure is consistent with the actual tire blowout situation, the tire pressure sensor 530 will generate and send a vehicle tire blowout signal to the vehicle communication control system. The vehicle communication control system 540 receives the vehicle tire blowout signal and sends it to the wire control brake system 510. When the wire control brake system 510 receives the vehicle tire blowout signal, the wire control brake system 510 determines the brake pressure of each wheel based on the brake pressure that has been established by the pre-built pressure and the actual demand. According to the results of real-time analysis, the wire control brake system 510 distributes the brake pressure that has been established by the pre-built pressure to each wheel as needed to brake the vehicle.

[0078] In the above-mentioned embodiment, the brake-by-wire system is used to pre-build pressure based on the brake-by-wire system to generate vehicle braking pressure in advance when a vehicle tire blowout warning signal is received, and to brake the vehicle based on the braking pressure through the brake-by-wire system when a vehicle tire blowout signal is received. Compared with the method of building pressure based on the brake-by-wire system and then braking the vehicle when a vehicle tire blowout signal is received, the pre-pressure building method shortens the pressure building time when a vehicle tire blowout signal is received, optimizes the transmission time, and can not only improve the braking control effect, but also enhance the stability of vehicle control in the case of a tire blowout, thereby ensuring the safety of life and property of people on the vehicle under a tire blowout condition.

[0079] In some embodiments, the brake-by-wire system 510 is used to send a brake command signal; see Figure 5 The tire blowout active braking system 500 may further include:

[0080] The brake 520 is used to receive a brake command signal so as to brake the vehicle based on the brake command signal.

[0081] Specifically, when a vehicle tire blowout signal is received, the wire control brake system 510 generates a corresponding brake command signal. The brake command signal can be determined based on real-time detected data, such as vehicle speed, tire load, etc., to ensure that the braking response meets actual needs. The generated brake command signal is transmitted to each brake 520 through the wire control brake system 510. After receiving the brake command signal, the brake 520 starts to perform the braking operation. Each brake 520 will adjust the brake pressure according to the command, thereby accurately braking the vehicle to ensure that the vehicle can effectively slow down or stop within the specified time.

[0082] In the above embodiment, the brake is used to receive a brake command signal so as to brake the vehicle based on the brake command signal to improve the stability and handling performance of the vehicle.

[0083] In some embodiments, see Figure 5 The tire blowout active braking system 500 may further include:

[0084] The tire pressure sensor 530 is used to determine the tire pressure change gradient corresponding to each tire of the vehicle within a preset detection cycle, and generate and send a vehicle tire blowout warning signal when the tire pressure change gradient corresponding to at least one tire meets the tire blowout warning condition.

[0085] The vehicle communication control system 540 is used to receive the tire blowout warning signal and transmit the tire blowout warning signal to the wire control brake system.

[0086] Specifically, each tire is equipped with a tire pressure sensor 530, which monitors the tire pressure inside the tire in real time to ensure the safe operation of the vehicle. A tire blowout detection cycle is pre-set according to the actual situation and needs of the vehicle, that is, the tire pressure changes are continuously monitored during this period of time.

[0087] In each preset detection cycle, the tire pressure sensor 530 in each tire will regularly collect the tire pressure of its corresponding tire and calculate the tire pressure change gradient of each tire in the cycle. The tire pressure sensor 530 in each tire compares the calculated pressure change gradient with the tire blowout warning condition. The preset tire blowout warning condition may include a sharply decreasing pressure change rate and a pressure value below a specific threshold. If the tire pressure change gradient corresponding to at least one tire meets the tire blowout warning condition, a vehicle tire blowout warning signal is generated and sent to the vehicle communication control system 540. The vehicle communication control system 540 receives the vehicle tire blowout warning signal and sends the tire blowout warning signal to the wire control brake system 510.

[0088] In the above embodiment, the tire pressure sensor determines the tire pressure change gradient corresponding to each tire of the vehicle within a preset detection period, and generates and sends a vehicle tire blowout warning signal when the tire pressure change gradient corresponding to at least one tire meets the tire blowout warning condition. Then the vehicle communication control system receives the tire blowout warning signal and transmits the tire blowout warning signal to the wire control brake system, so as to detect potential tire blowout risks early and provide the conditions for executing subsequent measures in advance.

[0089] In some embodiments, see Figure 5 The tire blowout active braking system 500 may further include:

[0090] The tire pressure sensor 530 is used to determine the tire pressure change gradient corresponding to each tire of the vehicle during the tire blowout detection cycle, and generate and send a vehicle tire blowout signal when the tire pressure change gradient corresponding to at least one tire meets the real tire blowout condition.

[0091] The vehicle communication control system 540 is used to receive a vehicle tire blowout signal and transmit the vehicle tire blowout signal to the wire control brake system.

[0092] Specifically, the setting of the tire blowout detection cycle is critical to whether a tire blowout event can be responded to in a timely manner. For example, if the tire blowout detection cycle is too long, it will lead to delayed identification of the tire blowout event, thereby increasing the risk of driving. Therefore, a reasonable tire blowout detection cycle is an important factor in ensuring driving safety. In each tire blowout detection cycle, the tire pressure sensor 530 in each tire will regularly collect the tire pressure of its corresponding tire and calculate the tire pressure change gradient of each tire in the cycle. The calculated pressure change gradient is compared with the preset real tire blowout condition. The preset real tire blowout condition may include a sharply decreasing pressure change rate and a pressure value below a specific threshold (such as close to or below atmospheric pressure). If the tire pressure change gradient corresponding to at least one tire meets the real tire blowout condition, a vehicle tire blowout signal is generated and sent to the vehicle communication control system 540. The vehicle communication control system 540 receives the vehicle tire blowout warning signal and sends the vehicle tire blowout signal to the wire control brake system 510.

[0093] In the above embodiment, the tire pressure sensor determines the tire pressure change gradient corresponding to each tire of the vehicle during the tire blowout detection cycle, and generates and sends a vehicle tire blowout signal when the tire pressure change gradient corresponding to at least one tire meets the real tire blowout condition. Then the vehicle communication control system receives the vehicle tire blowout signal and transmits the vehicle tire blowout signal to the wire control brake system so that braking measures can be taken quickly to reduce the risk of accidents and improve driving safety.

[0094] This specification provides an example of a tire blowout active braking method. Figure 6, the tire pressure sensor monitors the tire pressure in real time. When it detects features that meet the tire blowout warning, it generates and sends a vehicle tire blowout warning signal to CAN. CAN receives the vehicle tire blowout warning signal and sends it to the wire control brake system (Onebox). Onebox has an interface for receiving signals. When Onebox receives the vehicle tire blowout warning signal, Onebox pre-builds pressure to generate vehicle brake pressure in advance. Then the tire pressure sensor continues to monitor the tire pressure in real time. When it detects features that meet the real tire blowout, it generates and sends a vehicle tire blowout signal to CAN. CAN receives the vehicle tire blowout signal and sends it to Onebox. Onebox has an interface for receiving signals. When Onebox receives the vehicle tire blowout signal, there is no need to build pressure again. Onebox brakes the vehicle based on the brake pressure.

[0095] This specification provides a tire blowout active braking device 700, see Figure 7 The tire blowout active braking device 700 includes: a pre-pressure module 710 and an active braking module 720 .

[0096] The pre-pressure building module 710 is used to build up pressure based on the wire control brake system to generate vehicle braking pressure in advance when receiving a vehicle tire blowout warning signal;

[0097] The active braking module 720 is used to brake the vehicle based on the braking pressure through the wire control brake system when receiving a vehicle tire blowout signal.

[0098] For a detailed description of the active braking device for tire blowout, reference may be made to the description of the active braking method for tire blowout above, which will not be repeated here.

[0099] An embodiment of the present specification provides a vehicle, wherein the vehicle includes a brake-by-wire system, and the brake-by-wire system is used to perform the steps of any one of the above methods.

[0100] An embodiment of the present specification provides a computer device, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the method steps in the above embodiment are implemented.

[0101] An embodiment of the present specification provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the method in any of the above embodiments are implemented.

[0102] One embodiment of the present specification provides a computer program product, which includes instructions. When the instructions are executed by a processor of a computer device, the computer device can perform the steps of the method of any of the above embodiments.

[0103] In some embodiments, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in FIG. Figure 8 As shown. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a tire blowout active braking method is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device housing, or an external keyboard, touchpad or mouse, etc.

[0104] Those skilled in the art will understand that Figure 8 The structure shown in the figure is merely a block diagram of a portion of the structure related to the solution disclosed in this specification, and does not constitute a limitation on the computer device to which the solution disclosed in this specification is applied. Specifically, the computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0105] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or otherwise processing in a suitable manner if necessary, and then stored in a computer memory.

Claims

1. A tire blowout active braking method, characterized in that: The method comprises: When a tire blowout warning signal is received, the brake-by-wire system is used to pre-build pressure to generate vehicle brake pressure in advance. When a tire burst signal of the vehicle is received, the vehicle is braked based on the brake pressure through the brake-by-wire system.

2. The method according to claim 1, characterized in that When receiving a tire blowout signal of the vehicle, braking the vehicle based on the brake pressure by the brake-by-wire system comprises: When the pre-pressure building of the brake-by-wire system is completed, if the tire blowout signal of the vehicle is received, the brake-by-wire system brakes the vehicle based on the brake pressure.

3. The method according to claim 1, characterized in that The step of controlling the brake by the brake-by-wire control system to brake the vehicle based on the brake pressure includes: A brake command signal is sent to a brake through the brake-by-wire system so as to control the brake to brake the vehicle based on the brake command signal.

4. The method according to claim 1, characterized in that: The vehicle tire blowout warning signal is obtained by: Determine the tire pressure change gradient corresponding to each tire of the vehicle within a preset detection cycle; When the tire pressure change gradient corresponding to at least one of the tires meets the tire blowout warning condition, the vehicle tire blowout warning signal is generated and sent.

5. The method according to claim 4, characterized in that Determining the tire pressure change gradient corresponding to each tire of the vehicle within the preset detection cycle includes: Obtaining the tire pressure corresponding to each tire of the vehicle; According to the tire pressure corresponding to each tire, the tire pressure change gradient of each tire within a preset detection cycle is determined.

6. The method according to claim 1, characterized in that The vehicle tire burst signal is obtained by the following method: During the tire blowout detection cycle, determine the tire pressure change gradient corresponding to each tire of the vehicle; When the tire pressure change gradient corresponding to at least one of the tires meets the real tire blowout condition, the vehicle tire blowout signal is generated and sent.

7. An active braking system for a tire blowout, characterized in that: The system comprises: The brake-by-wire system is used to pre-build pressure based on the brake-by-wire system to generate vehicle braking pressure in advance when a vehicle tire blowout warning signal is received, and to brake the vehicle based on the braking pressure through the brake-by-wire system when a vehicle tire blowout signal is received.

8. The system according to claim 7, characterized in that The brake-by-wire system is used to send a brake command signal; the system also includes: a brake, for receiving the brake command signal so as to brake the vehicle based on the brake command signal; A tire pressure sensor is used to determine the tire pressure change gradient corresponding to each tire of the vehicle within a preset detection cycle, and generate and send the vehicle tire blowout warning signal and / or the vehicle tire blowout signal when the tire pressure change gradient corresponding to at least one of the tires meets the tire blowout warning condition and / or the actual tire blowout condition; The vehicle communication control system is used to receive the tire blowout warning signal and / or the vehicle tire blowout signal, and transmit the tire blowout warning signal and / or the vehicle tire blowout signal to the wire control brake system.

9. A vehicle, characterized in that: The vehicle comprises a brake-by-wire system for performing the steps of the method according to any one of claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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