Active braking methods, systems, vehicles, and storage media for tire blowouts

Abstract

This invention relates to the field of vehicle safety technology, and discloses a method, system, vehicle, and storage medium for active braking in the event of a tire blowout. Upon receiving a tire blowout warning signal, pre-pressure build-up is performed based on the brake-by-wire system to generate braking pressure in advance. Then, upon receiving a tire blowout signal, the brake-by-wire system applies braking pressure to the vehicle. Compared to the method of building pressure based on the brake-by-wire system upon receiving a tire blowout signal and then applying braking, the pre-pressure build-up method shortens the pressure build-up time upon receiving the tire blowout signal, optimizes the transmission time, and not only improves braking control performance but also enhances the stability of vehicle control in the event of a tire blowout, ensuring the safety of life and property of occupants in the event of a tire blowout.

Description

Technical Field

[0001] This invention relates to the field of vehicle safety technology, and in particular to a method, system, vehicle, and storage medium for active braking in the event of a tire blowout. Background Technology

[0002] With the development of the automotive industry, tire safety issues, especially tire blowout control, are receiving increasing attention.

[0003] In related technologies, tire pressure is monitored in real time using direct tire pressure sensors, and a signal is transmitted to the CAN bus in the event of a tire blowout. Upon receiving the blowout signal, the brake-by-wire system will apply the brakes as needed. However, the methods in these technologies require improvement. Summary of the Invention

[0004] The embodiments described in this specification aim to at least partially solve one of the technical problems in the related art. To this end, the embodiments described in this specification propose a method, system, vehicle, and storage medium for active braking in the event of a tire blowout.

[0005] This specification provides an active braking method for tire blowout, the method comprising:

[0006] Upon receiving a tire blowout warning signal, the brake-by-wire system pre-builds pressure to generate vehicle braking pressure in advance.

[0007] Upon receiving a tire blowout signal, the brake-by-wire system applies brakes to the vehicle based on the braking pressure.

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

[0009] If a tire blowout signal is received after the brake-by-wire system has completed pre-pressure build-up, the system will brake the vehicle based on the braking pressure.

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

[0011] The brake-by-wire system sends a braking command signal to the brakes so as to control the brakes to brake the vehicle based on the braking command signal.

[0012] In one implementation, the vehicle tire blowout warning signal is obtained in the following manner:

[0013] Within a preset testing period, determine the tire pressure change gradient for each tire of the vehicle.

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

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

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

[0017] Based on the tire pressure of each tire, determine the tire pressure change gradient of each tire within a preset detection period.

[0018] In one implementation, the vehicle tire blowout signal is obtained in the following manner:

[0019] During the tire blowout detection cycle, determine the tire pressure change gradient for each tire of the vehicle.

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

[0021] This specification provides an active braking system for tire blowout, 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 tire blowout warning signal is received, and to brake the vehicle based on the braking pressure when a tire blowout signal is received.

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

[0024] A brake, configured to receive the braking command signal so as to brake the vehicle based on the braking command signal;

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

[0026] A 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 brake-by-wire system.

[0027] This specification provides a vehicle including a brake-by-wire system for performing the steps of any of the methods described above.

[0028] This specification provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in any of the above embodiments.

[0029] This specification provides a computer program product that includes instructions that, when executed by a processor of a computer device, enable the computer device to perform the steps of the method described in any of the above embodiments.

[0030] In the above-described embodiment, upon receiving a tire blowout warning signal, pre-pressure is built up based on the brake-by-wire system to generate vehicle braking pressure in advance. Then, upon receiving a tire blowout signal, the brake-by-wire system applies braking pressure to the vehicle. Compared to the method of building pressure based on the brake-by-wire system upon receiving a tire blowout signal and then applying braking, the pre-pressure building-up method shortens the pressure building-up time upon receiving a tire blowout signal, optimizes the transmission time, and not only improves braking control performance but also enhances the stability of vehicle control in the event of a tire blowout, ensuring the safety of life and property of occupants in the event of a tire blowout. Attached Figure Description

[0031] Figure 1 A schematic flowchart illustrating the tire blowout active braking method provided in the embodiments of this specification;

[0032] Figure 2 A flowchart illustrating the process of obtaining a vehicle tire blowout warning signal, provided for the implementation of this specification.

[0033] Figure 3 A flowchart illustrating the process of determining the tire pressure change gradient within a preset detection cycle, provided for the implementation of this specification.

[0034] Figure 4 A schematic diagram illustrating the process of obtaining a vehicle tire blowout signal provided for the embodiments of this specification;

[0035] Figure 5 A schematic diagram of the tire blowout active braking system provided for the embodiments of this specification;

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

[0037] Figure 7 A schematic diagram of the tire blowout active braking device provided for the embodiments of this specification;

[0038] Figure 8 An internal structural diagram of a computer device provided for embodiments of this specification. Detailed Implementation

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

[0040] With the continuous development of the automotive industry, tire safety has become increasingly important. Among these, research on tire blowout stability control is of paramount importance. Firstly, research on tire blowout stability control helps improve driving safety. By studying control technologies for tire blowout stability, the occurrence of blowout incidents can be effectively reduced, thereby lowering the risk of traffic accidents and ensuring the safety of drivers and passengers. Post-blowout stability control requires highly precise technical support. Specifically, post-blowout stability control depends on two key factors: the precision of the control method and the timing of the controller receiving the blowout signal from the tire pressure sensor.

[0041] In related technologies, tire pressure is monitored in real time using a direct tire pressure sensor, and a signal is transmitted to the CAN bus in the event of a tire blowout. Upon receiving the blowout signal, the brake-by-wire system will apply the brakes as needed.

[0042] Based on this, the embodiments of this specification provide a method for active braking in the event of a tire blowout. Upon receiving a tire blowout warning signal, pre-pressure is built up using a brake-by-wire system to generate braking pressure in advance. Then, upon receiving a tire blowout signal, the brake-by-wire system applies braking pressure to the vehicle. Compared to the method of building pressure using the brake-by-wire system upon receiving a tire blowout signal and then applying braking, the pre-pressure building-up method shortens the pressure building-up time upon receiving the tire blowout signal, optimizes the transmission time, and not only improves braking control performance but also enhances the stability of vehicle control in the event of a tire blowout, ensuring the safety of life and property of occupants in the event of a tire blowout.

[0043] This specification provides an active braking method for tire blowout. Please refer to [link / reference]. Figure 1 The method may include the following steps:

[0044] S110. Upon receiving a tire blowout warning signal, pre-build pressure is performed based on the brake-by-wire system to generate vehicle braking pressure in advance.

[0045] Specifically, each tire is equipped with a tire pressure sensor that monitors tire pressure in real time. When a sharp drop in tire pressure is detected, or when a blowout warning is triggered, the tire pressure sensor generates and sends a blowout warning signal to the vehicle communication control system. The vehicle communication control system receives the blowout warning signal and forwards it to the brake-by-wire system. The brake-by-wire system has an interface for receiving signals; when it receives a blowout warning signal, it considers a blowout risk. To respond quickly in the event of an actual blowout, the brake-by-wire system activates a pre-build-up function to prepare for the impending emergency. The brake-by-wire system calculates the braking pressure based on the vehicle's dynamic behavior and rapidly adjusts the hydraulic system based on the calculated braking pressure to build up a preset braking pressure in advance. For example, the vehicle communication control system can be CAN or an electronic control unit (ECU). For example, the pre-build-up braking pressure can be determined based on the vehicle's current speed and the maximum braking force required to bring it to a stop. The time it takes for the tire pressure sensor to send the blowout warning signal to the vehicle communication control system is typically 375 ms. The time it takes for the brake-by-wire system to receive a tire blowout warning signal and complete pre-pressure build-up is typically 100 milliseconds.

[0046] S120. Upon receiving a tire blowout signal, the vehicle is braked based on braking pressure using the brake-by-wire system.

[0047] Specifically, each tire is equipped with a tire pressure sensor that monitors tire pressure in real time. When a drop in tire pressure is detected that matches a real tire blowout scenario, the tire pressure sensor generates and sends a tire blowout signal to the vehicle communication control system. The vehicle communication control system receives the tire blowout signal and sends it to the brake-by-wire system. When the brake-by-wire system receives the tire blowout signal, it determines the braking pressure for each wheel based on the pre-built braking pressure and actual needs. Based on the real-time analysis results, the brake-by-wire system distributes the pre-built braking pressure to each wheel as needed to brake the vehicle. For example, the braking range set for a real tire blowout could be braking the current vehicle speed to 20 km / h.

[0048] In the above embodiments, upon receiving a tire blowout warning signal, pre-pressure is built up based on the brake-by-wire system to generate vehicle braking pressure in advance. Then, upon receiving a tire blowout signal, the vehicle is braked based on the braking pressure using the brake-by-wire system. Compared to the method of building pressure based on the brake-by-wire system upon receiving a tire blowout signal and then braking the vehicle, the pre-pressure building-up method shortens the pressure building-up time upon receiving a tire blowout signal, optimizes the transmission time, and not only improves the braking control effect but also enhances the stability of vehicle control in the event of a tire blowout, ensuring the safety of life and property of occupants in the vehicle during a tire blowout.

[0049] In some implementations, upon receiving a tire blowout signal, braking the vehicle based on braking pressure via the brake-by-wire system may further include: if a tire blowout signal is received after the brake-by-wire system has completed pre-pressure build-up, braking the vehicle based on braking pressure via the brake-by-wire system.

[0050] Specifically, once the brake-by-wire system has established pre-pressure, it provides a baseline braking pressure for subsequent vehicle braking, allowing for rapid response to braking requests or automatic emergency braking events. When the brake-by-wire system receives a tire blowout signal, it means immediate braking is required to ensure the safety of the vehicle and passengers. In this situation, the brake-by-wire system immediately determines the braking pressure for each wheel based on the established braking pressure and actual needs. Based on real-time analysis, the brake-by-wire system distributes the baseline braking pressure to each wheel as needed to brake the vehicle.

[0051] In the above embodiments, if a tire blowout signal is received after the online braking system has completed pre-pressure build-up, the vehicle will be braked immediately based on the braking pressure through the online braking system on the basis of the pre-pressure build-up, so as to ensure that the vehicle can brake quickly when a tire blowout occurs.

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

[0053] Specifically, upon receiving a tire blowout signal, the brake-by-wire system generates a corresponding braking command signal. This signal can be based on real-time monitored data, such as vehicle speed and tire load, to ensure the braking response meets actual needs. The generated braking command signal is transmitted to each brake via the brake-by-wire system. Upon receiving the signal, each brake begins braking. Each brake adjusts its braking pressure according to the command, precisely braking the vehicle to ensure effective deceleration or stopping within a specified time.

[0054] For example, the braking command signal may include an execution signal and the magnitude of the braking deceleration to be performed. For instance, if the vehicle's current speed is 100 km / h and it needs to decelerate to 20 km / h within 3 seconds, the required braking deceleration is approximately 0.75g. Based on the braking deceleration, the required braking force is calculated (using the formula F = ma), and the brake hydraulic pressure is adjusted accordingly. It is important to note that the braking force for each wheel is adjusted according to the axle load distribution; therefore, except for the wheel with a blown tire, the braking force corresponding to the brakes of other wheels will differ. Furthermore, the braking force is adjusted in real time to adapt to changes in vehicle speed, ensuring a smooth and effective braking process.

[0055] In the above embodiments, a braking command signal is sent to the brake via a brake-by-wire system, so as to control the brake to brake the vehicle based on the braking command signal, thereby improving the vehicle's stability and handling performance.

[0056] In some implementations, please refer to Figure 2 The vehicle tire blowout warning signal can be obtained through the following methods:

[0057] S210. Within a preset detection cycle, determine the tire pressure change gradient for each tire of the vehicle.

[0058] S220. When the tire pressure change gradient of 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 that monitors the tire pressure in real time to ensure safe vehicle operation. A tire blowout detection cycle is pre-set based on the vehicle's actual conditions and needs, meaning tire pressure changes are continuously monitored within this timeframe.

[0060] Within each preset detection cycle, the tire pressure sensor in each tire periodically collects the tire pressure of its corresponding tire and calculates the tire pressure change gradient for each tire during that cycle. The calculated pressure change gradient is compared with tire blowout warning conditions. Preset tire blowout warning conditions may include a sharply decreasing rate of pressure change and pressure values ​​falling below a specific threshold. If the tire pressure change gradient for at least one tire meets the tire blowout warning conditions, a vehicle tire blowout warning signal is generated and sent to the vehicle communication control system. For example, the vehicle communication control system may be CAN or an electronic control unit (ECU). The preset detection cycle may be a single detection cycle, which may include five identification frames, with each identification frame being 10 milliseconds.

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

[0062] In some implementations, please refer to Figure 3 Within a preset detection period, determining the tire pressure change gradient for each tire of the vehicle can include the following steps:

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

[0064] S320. Based on the tire pressure of each tire, determine the tire pressure change gradient of each tire within a preset detection cycle.

[0065] Specifically, within a preset testing cycle, the tire pressure of each tire is monitored and acquired in real time using tire pressure sensors within each tire. At the start of the preset testing cycle, the initial tire pressure value of each tire is recorded using the tire pressure sensors within each tire. Then, throughout the entire testing cycle, tire pressure data for each tire is collected periodically; these data points are continuously recorded to reflect the trend of tire pressure changes during the testing cycle. At the end of each testing cycle, the tire pressure change gradient for each tire within the preset testing cycle is calculated based on the recorded data.

[0066] In the above embodiments, 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. This enables real-time acquisition and monitoring of the tire pressure change of each tire, ensuring timely detection of potential tire blowout risks.

[0067] In some implementations, please refer to Figure 4 The following methods can be used to detect a tire blowout:

[0068] S410. During the tire blowout detection cycle, determine the tire pressure change gradient for each tire of the vehicle.

[0069] S420. When the tire pressure change gradient of at least one tire meets the conditions for a real tire blowout, generate and send a vehicle tire blowout signal.

[0070] Specifically, the setting of the tire blowout detection cycle is crucial for timely response to tire blowout events. For example, if the tire blowout detection cycle is too long, it will lead to delayed identification of tire blowout events, thereby increasing driving risks. Therefore, a reasonable tire blowout detection cycle is an important factor in ensuring driving safety. Within each tire blowout detection cycle, the tire pressure sensor in each tire periodically collects the tire pressure of its corresponding tire and calculates the tire pressure change gradient for each tire during that cycle. The calculated pressure change gradient is compared with preset real tire blowout conditions. Preset real tire blowout conditions may include a sharply decreasing rate of pressure change and pressure values ​​below a specific threshold (such as close to or below atmospheric pressure). If the tire pressure change gradient for at least one tire meets the real tire blowout conditions, a vehicle blowout signal is generated and sent to the vehicle communication control system. For example, the vehicle communication control system can be CAN or an electronic control unit (ECU). The tire blowout detection cycle can be two detection cycles, and one detection cycle can include 5 identification frames, with each identification frame being 10 milliseconds.

[0071] In the above implementation, during the tire blowout detection cycle, the tire pressure change gradient corresponding to each tire of the vehicle is determined. When the tire pressure change gradient corresponding to at least one tire meets the actual tire blowout conditions, a tire blowout signal is generated and sent to enable rapid braking measures to reduce the risk of accidents and improve driving safety.

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

[0073] Specifically, during each tire blowout detection cycle, the tire pressure sensor in each tire periodically collects the tire pressure of its corresponding tire. If the tire pressure of at least one tire drops rapidly to atmospheric pressure during the detection cycle, meeting the conditions for a real tire blowout, the tire whose tire pressure has dropped to atmospheric pressure is determined to be in a real blowout state.

[0074] This specification provides an active braking system 500 for tire blowout protection. Please refer to [link / reference]. 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 tire blowout warning signal is received, and to brake the vehicle based on the braking pressure through the brake-by-wire system when a tire blowout signal is received.

[0076] Specifically, each tire is equipped with a tire pressure sensor 530 that monitors tire pressure in real time. When a sudden drop in tire pressure is detected, or when a blowout warning is triggered, the tire pressure sensor 530 generates and sends a vehicle blowout warning signal to the vehicle communication control system 540. The vehicle communication control system 540 receives the vehicle blowout warning signal and sends it to the brake-by-wire system 510. The brake-by-wire system 510 has an interface for receiving signals. When the brake-by-wire system 510 receives a vehicle blowout warning signal, it considers there to be a risk of a blowout. To respond quickly when an actual blowout occurs, the brake-by-wire system 510 activates a pre-pressure build-up function to prepare for the impending emergency. The brake-by-wire system 510 calculates the braking pressure based on the vehicle's dynamic behavior and quickly adjusts the hydraulic system based on the calculated braking pressure to build up a preset braking pressure, thus generating the vehicle's braking pressure in advance.

[0077] Each tire is equipped with a tire pressure sensor 530 that monitors tire pressure in real time. When a drop in tire pressure is detected that matches a potential tire blowout, the tire pressure sensor 530 generates and sends a tire blowout signal to the vehicle communication control system. The vehicle communication control system 540 receives the tire blowout signal and sends it to the brake-by-wire system 510. When the brake-by-wire system 510 receives the tire blowout signal, it determines the braking pressure for each wheel based on the pre-built braking pressure and actual needs. Based on the real-time analysis results, the brake-by-wire system 510 distributes the pre-built braking pressure to each wheel as needed to brake the vehicle.

[0078] In the above embodiments, the brake-by-wire system is used to pre-build pressure based on the brake-by-wire system when a tire blowout warning signal is received, so as to generate vehicle braking pressure in advance, and to brake the vehicle based on the braking pressure when a tire blowout signal is received. Compared with the method of building pressure based on the brake-by-wire system when a tire blowout signal is received and then braking the vehicle, the pre-build pressure method shortens the pressure building time when a tire blowout signal is received, optimizes the transmission time, not only improves the braking control effect, but also enhances the stability of vehicle control in the event of a tire blowout, and ensures the safety of life and property of the people on the vehicle in the event of a tire blowout.

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

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

[0081] Specifically, upon receiving a tire blowout signal, the brake-by-wire system 510 generates a corresponding braking command signal. This braking command signal can be determined based on real-time detected data, such as vehicle speed and tire load, to ensure the braking response meets actual needs. The generated braking command signal is transmitted to each brake 520 via the brake-by-wire system 510. Upon receiving the braking command signal, each brake 520 begins braking. Each brake 520 adjusts the braking pressure according to the command, thereby precisely braking the vehicle and ensuring that it can effectively decelerate or stop within a specified time.

[0082] In the above embodiments, the brake is used to receive a braking command signal so as to brake the vehicle based on the braking command signal, thereby improving the vehicle's stability and handling performance.

[0083] In some implementations, please refer to Figure 5 The tire blowout active braking system 500 may also include:

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

[0085] The vehicle communication control system 540 is used to receive tire blowout warning signals and transmit them to the brake-by-wire 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 conditions and needs of the vehicle, meaning that tire pressure changes are continuously monitored within this time period.

[0087] Within each preset detection cycle, the tire pressure sensor 530 in each tire periodically collects the tire pressure of its corresponding tire and calculates the tire pressure change gradient for each tire during that cycle. The tire pressure sensor 530 in each tire compares the calculated pressure change gradient with tire blowout warning conditions. Preset tire blowout warning conditions may include a sharp drop in the rate of pressure change and pressure values ​​falling below a specific threshold. If the tire pressure change gradient for at least one tire meets the tire blowout warning conditions, 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 it to the brake-by-wire system 510.

[0088] In the above embodiment, the tire pressure sensor determines the tire pressure change gradient of each tire of the vehicle within a preset detection period. When the tire pressure change gradient of at least one tire meets the tire blowout warning condition, a tire blowout warning signal is generated and sent. Then, the vehicle communication control system receives the tire blowout warning signal and transmits it to the brake-by-wire system to detect potential tire blowout risks as early as possible, providing conditions for subsequent measures to be implemented in advance.

[0089] In some implementations, please refer to Figure 5 The tire blowout active braking system 500 may also include:

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

[0091] The vehicle communication control system 540 is used to receive tire blowout signals and transmit them to the brake-by-wire system.

[0092] Specifically, the setting of the tire blowout detection cycle is crucial for timely response to tire blowout events. For example, if the tire blowout detection cycle is too long, it will lead to delayed identification of tire blowout events, thereby increasing driving risks. Therefore, a reasonable tire blowout detection cycle is an important factor in ensuring driving safety. During each tire blowout detection cycle, the tire pressure sensor 530 in each tire periodically collects the tire pressure of its corresponding tire and calculates the tire pressure change gradient for each tire during that cycle. The calculated pressure change gradient is compared with preset real tire blowout conditions. Preset real tire blowout conditions may include a sharp drop in the rate of pressure change and pressure values ​​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 conditions, 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 it to the brake-by-wire system 510.

[0093] In the above embodiment, the tire pressure sensor determines the tire pressure change gradient of 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 of at least one tire meets the actual tire blowout conditions. Then, the vehicle communication control system receives the vehicle tire blowout signal and transmits it to the brake-by-wire system so as to take braking measures quickly, reduce the risk of accidents, and improve driving safety.

[0094] This specification provides a scenario example of an active braking method for tire blowout. Please refer to [link / reference]. Figure 6The tire pressure sensor monitors tire pressure in real time. When it detects characteristics matching a blowout warning, it generates and sends a vehicle blowout warning signal to the CAN bus. The CAN bus receives the vehicle blowout warning signal and sends it to the brake-by-wire system (Onebox). The Onebox has a signal receiving interface. When the Onebox receives the vehicle blowout warning signal, it pre-builds up pressure to generate the vehicle's braking pressure in advance. Then, the tire pressure sensor continues to monitor tire pressure in real time. When it detects characteristics matching an actual blowout, it generates and sends a vehicle blowout signal to the CAN bus. The CAN bus receives the vehicle blowout signal and sends it to the Onebox. The Onebox has a signal receiving interface. When the Onebox receives the vehicle blowout signal, it does not need to build up pressure again; the Onebox brakes the vehicle based on the braking pressure.

[0095] This specification provides an active braking device 700 for tire blowout protection. Please refer to [link / reference]. Figure 7 The tire blowout active braking device 700 includes: a pre-pressure building module 710 and an active braking module 720.

[0096] The pre-pressure build-up module 710 is used to build up pressure based on the brake-by-wire system in advance when a tire blowout warning signal is received, so as to generate the vehicle braking pressure in advance.

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

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

[0099] This specification provides a vehicle including a brake-by-wire system for performing the steps of any of the methods described above.

[0100] This specification provides a computer device including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the method steps described above.

[0101] This specification provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method in any of the above embodiments.

[0102] One embodiment of this specification provides a computer program product including instructions that, when executed by a processor of a computer device, enable the computer device to perform the steps of the method described in 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 follows: Figure 8 As shown, the computer device includes a processor, memory, communication interface, display screen, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, carrier networks, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements a method for active braking in the event of a tire blowout. The display screen can be an LCD screen or an e-ink screen. The input devices can be a touch layer covering the display screen, buttons, a trackball, or a touchpad on the computer device's casing, or an external keyboard, touchpad, or mouse.

[0104] Those skilled in the art will understand that Figure 8 The structures shown are merely block diagrams of some structures related to the solutions disclosed in this specification, and do not constitute a limitation on the computer device to which the solutions disclosed in this specification are applied. Specifically, the computer device may include more or fewer components than shown in the figures, or combine certain components, or have different component arrangements.

[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 embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Furthermore, computer-readable media can even be paper or other suitable media on which programs can be printed, because programs can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

Claims

1. A method for active braking in the event of a tire blowout, characterized in that, The method includes: Within a preset testing period, determine the tire pressure change gradient for each tire of the vehicle. When the tire pressure change gradient corresponding to at least one of the tires meets the tire blowout warning conditions, a vehicle tire blowout warning signal is generated and sent. Upon receiving the vehicle tire blowout warning signal, the brake-by-wire system performs pre-pressure build-up to generate vehicle braking pressure in advance. During the tire blowout detection cycle, determine the tire pressure change gradient for each tire of the vehicle. When the tire pressure change gradient corresponding to at least one of the tires meets the actual tire blowout conditions, a vehicle tire blowout signal is generated and sent. If a tire blowout signal is received after the brake-by-wire system has completed pre-pressure build-up, the system will brake the vehicle based on the braking pressure.

2. The method according to claim 1, characterized in that, The method of controlling the brakes via the brake-by-wire system to brake the vehicle based on the braking pressure includes: The brake-by-wire system sends a braking command signal to the brakes so as to control the brakes to brake the vehicle based on the braking command signal.

3. The method according to claim 1, characterized in that, The step of determining the tire pressure change gradient for each tire of the vehicle within a preset detection period includes: Obtain the tire pressure corresponding to each tire of the vehicle; Based on the tire pressure of each tire, determine the tire pressure change gradient of each tire within a preset detection period.

4. A tire blowout active braking system, characterized in that, The tire blowout active braking system is used to implement the tire blowout active braking method according to any one of claims 1-3. The system is used to determine the tire pressure change gradient corresponding to each tire of the vehicle within a preset detection period; generate and send a vehicle tire blowout warning signal when the tire pressure change gradient corresponding to at least one of the tires meets the tire blowout warning condition; and determine the tire pressure change gradient corresponding to each tire of the vehicle within the tire blowout detection period. When the tire pressure change gradient corresponding to at least one of the tires meets the conditions for a real tire blowout, a vehicle tire blowout signal is generated and sent; the system includes: 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 the vehicle tire blowout warning signal is received, and to brake the vehicle based on the braking pressure when the vehicle tire blowout signal is received after the brake-by-wire system has completed the pre-build pressure.

5. The system according to claim 4, characterized in that, The brake-by-wire system is used to send braking command signals; the system also includes: A brake, configured to receive the braking command signal so as to brake the vehicle based on the braking command signal; The tire pressure sensor is used to determine the tire pressure change gradient of each tire of the vehicle within a preset detection period, and to generate and send the vehicle tire pressure warning signal and / or the vehicle tire pressure signal when the tire pressure change gradient of at least one of the tires meets the tire blowout warning condition and / or the actual tire blowout condition. A 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 brake-by-wire system.

6. A vehicle, characterized in that, The vehicle includes a brake-by-wire system for performing the steps of the method according to any one of claims 1 to 3.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 3.

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