Vehicle braking control method and device and electronic equipment

Abstract

The invention provides a vehicle braking control method and device and electronic equipment, and the method comprises the steps: starting a brake-by-wire system to carry out active braking control on a target vehicle after the target vehicle sends a collision signal; detecting an intervention state of a brake pedal of the target vehicle by a user; and when the intervention state reaches a preset intervention state, active braking control over the target vehicle is stopped, so that a user obtains the braking control authority of the target vehicle. By the adoption of the method, the problems that in the prior art, after a vehicle receives a collision signal, when a secondary collision prevention function works, misoperation intervention of a driver can cause function interruption and exit, and the risk that follow-up collision continues to happen is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle control, and in particular to a vehicle braking control method, device and electronic equipment. Background Art

[0002] Secondary Collision Mitigation (SCM) is a technology designed to reduce or avoid the damage caused by a secondary collision after the initial collision. This function is mainly achieved through advanced technical means such as intelligent braking systems. After the initial collision, the vehicle will automatically brake to reduce the speed or stop the vehicle completely, thereby reducing or avoiding the occurrence of secondary collision accidents and the damage caused by them. The existing secondary collision prevention function will be interrupted and exited if the driver intervenes by mistake after receiving the collision signal, causing the risk of subsequent collisions. Summary of the invention

[0003] The present invention provides a vehicle braking control method, device and electronic equipment, which are used to solve the problem in the prior art that after the vehicle receives a collision signal, when the secondary collision prevention function is working, the driver's misoperation intervention will cause the function to be interrupted and exited, resulting in the risk of subsequent collisions.

[0004] The present invention provides a vehicle braking control method, comprising: When the target vehicle sends a collision signal, the wire control brake system is activated to perform active braking control on the target vehicle; Detecting a user's intervention status on a brake pedal of the target vehicle; When the intervention state reaches a preset intervention state, active braking control of the target vehicle is stopped, so that the user obtains the braking control authority of the target vehicle.

[0005] According to a vehicle brake control method provided by the present invention, the detecting of the user's intervention state on the brake pedal of the target vehicle comprises: detecting a displacement depth of a brake pedal of the target vehicle; When the displacement depth is greater than or equal to a preset displacement depth, it is detected that the displacement depth maintains a first time period greater than or equal to the preset displacement depth, and the intervention state is determined according to the displacement depth and the first time period.

[0006] According to a vehicle braking control method provided by the present invention, when the intervention state reaches a preset intervention state, stopping active braking control of the target vehicle includes: When the first time period is greater than or equal to a preset time period, active braking control of the target vehicle is stopped.

[0007] A vehicle braking control method provided by the present invention further includes: When the first duration is less than a preset duration, maintaining the brake-by-wire system to perform active braking control on the target vehicle, the duration of maintaining the active braking control is a second duration, and the second duration is greater than or equal to the preset duration; When the second time period is reached, active braking control of the target vehicle is stopped, so that the user obtains braking control authority of the target vehicle.

[0008] A vehicle braking control method provided by the present invention further includes: When the displacement depth is less than a preset displacement depth, the brake-by-wire system is maintained to perform active braking control on the target vehicle until the target vehicle stops.

[0009] According to a vehicle braking control method provided by the present invention, before starting the brake-by-wire system to perform active braking control on the target vehicle, the method further includes: When the brake-by-wire system receives the collision signal N times in succession, the brake-by-wire system is started to perform active braking control on the target vehicle; wherein N is a preset number of times the collision signal is received.

[0010] The present invention provides a vehicle braking control device, comprising: An active braking unit, used to start the wire control brake system to perform active braking control on the target vehicle when the target vehicle sends a collision signal; a pedal detection unit, used to detect a user's intervention status on a brake pedal of the target vehicle; The authority control unit is used to stop the active braking control of the target vehicle when the intervention state reaches a preset intervention state, so that the user obtains the braking control authority of the target vehicle.

[0011] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, a vehicle braking control method as described above is implemented.

[0012] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the vehicle braking control method as described in any one of the above is implemented.

[0013] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the vehicle braking control method as described above is implemented.

[0014] The present invention provides a vehicle braking control method and device. When a vehicle collision occurs and the wire control brake system is activated, the user's intervention status on the brake pedal of the target vehicle is detected to further determine whether to continue the vehicle's braking control or hand over the braking control authority to the user, thereby avoiding the risk of subsequent vehicle collisions caused by the driver's erroneous intervention and the interruption and exit of the vehicle's active braking function after the vehicle collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a flow chart of a vehicle braking control method provided by the present invention.

[0017] Figure 2 It is a structural schematic diagram of a vehicle braking control device provided by the present invention.

[0018] Figure 3 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the descriptions used in this way can be interchanged where appropriate, so that the embodiments can be implemented in a sequence other than that illustrated or described in the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or modules is not necessarily limited to those steps or modules that are clearly listed, but may include other steps or modules that are not clearly listed or inherent to these processes, methods, products or devices. The naming or numbering of the steps that appear in the present application does not mean that the steps in the method flow must be executed in the time / logical sequence indicated by the naming or numbering. The process steps that have been named or numbered can change the execution order according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved. The division of modules in this application is a logical division. There may be other division methods when it is implemented in actual applications. For example, multiple modules can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between units can be electrical or other similar forms, which are not limited in this application. In addition, the modules or submodules described as separate components may or may not be physically separated, may or may not be physical units, or may be distributed in multiple circuit units, and some or all of the units may be selected according to actual needs to achieve the purpose of the present application.

[0021] The present invention provides a vehicle braking control method, device and electronic equipment, which are used to solve the problem in the prior art that after the vehicle receives a collision signal, when the secondary collision prevention function is working, the driver's misoperation intervention will cause the function to be interrupted and exited, resulting in the risk of subsequent collisions.

[0022] Combine the following Figure 1-Figure 3 The specific contents of the present invention are described.

[0023] Figure 1 A schematic flow chart of a vehicle braking control method provided by the present invention is applied in a brake-by-wire system, and includes steps S101-S103.

[0024] Step S101, when the target vehicle sends out a collision signal, the brake-by-wire system is started to perform active braking control on the target vehicle.

[0025] Step S102, detecting the user's intervention status on the brake pedal of the target vehicle.

[0026] Step S103, when the intervention state reaches a preset intervention state, the active braking control of the target vehicle is stopped, so that the user obtains the braking control authority of the target vehicle.

[0027] Specifically, when the target vehicle collides with the vehicle in front during driving. When the vehicle's sensors (such as radar, camera or acceleration sensor) detect the collision, a collision signal is immediately issued, and the target vehicle's brake-by-wire system starts the secondary collision prevention function to reduce or avoid subsequent secondary collisions. At the same time, the system begins to detect the driver's intervention status on the brake pedal. If the driver's intervention reaches the preset intervention status (such as the depth of depression, duration, etc.), the system stops active braking control and returns the braking control to the driver.

[0028] Exemplarily, after the brake-by-wire system is started, the SCM is activated, the brake-by-wire system actively builds pressure, the target vehicle starts to decelerate and the brake lights are activated, the emergency hazard lights are activated until the target vehicle stops, and then the parking function (EPB) is activated.

[0029] In an embodiment of the present invention, the brake-by-wire system may include a mechanical brake-by-wire system and a hydraulic brake-by-wire system. Mechanical brake-by-wire system (EMB): uses electrical energy as the energy source, drives the brake pads through a motor, transmits energy through wires, and transmits signals through data lines. There is no brake line connected to the entire system, the structure is simple, the volume is small, the signal is transmitted through electricity, the response is sensitive, the braking distance is reduced, the operation is stable, the maintenance is simple, there is no hydraulic oil line, there is no hydraulic oil leakage problem, it is directly controlled by the ECU, and it is easy to realize functions such as ABS, TCS, ESP, and ACC.

[0030] Hydraulic brake-by-wire system (EHB): Developed from the traditional hydraulic brake system, but very different from the traditional braking method. EHB replaces some of the original mechanical components with electronic components. It is an advanced mechatronic system that combines electronic systems with hydraulic systems. EHB is mainly composed of an electronic pedal, an electronic control unit (ECU), and a hydraulic actuator.

[0031] In the embodiments of the present invention, the specific structure and implementation of the brake-by-wire system are not specifically limited, and all contents of the embodiments of the present invention can be implemented.

[0032] In a possible implementation, before starting the brake-by-wire system to perform active braking control on the target vehicle, the method further includes: when the brake-by-wire system receives a collision signal N times in a row, starting the brake-by-wire system to perform active braking control on the target vehicle; wherein N is a preset number of times the collision signal is received.

[0033] Specifically, in order to prevent the accidental occurrence of false alarms or single collision signals, a preset number of collision signal receptions N (for example, N=3) is set. Active braking control is initiated only when the brake-by-wire system receives collision signals N times in a row. This increases the reliability and stability of the system and prevents excessive braking measures due to a single false alarm.

[0034] In a possible implementation, detecting the user's intervention state on the brake pedal of the target vehicle includes: Detecting the displacement depth of the brake pedal of the target vehicle; When the displacement depth is greater than or equal to the preset displacement depth, the displacement depth is detected to be maintained for a first time period greater than or equal to the preset displacement depth, and the intervention state is determined according to the displacement depth and the first time period.

[0035] Specifically, in an embodiment of the present invention, the user's intervention state on the brake pedal of the target vehicle is determined by two aspects: the displacement depth of the brake pedal and the first time length during which the displacement depth is maintained greater than or equal to the preset displacement depth when the displacement depth is greater than or equal to the preset displacement depth.

[0036] When the displacement depth is greater than or equal to the preset displacement depth, it is determined that the user has intervened in the brake pedal, and then the duration of the action is detected to avoid brake pedal displacement due to user misoperation, which may lead to errors in the subsequent braking authority switching process.

[0037] In a possible implementation, when the intervention state reaches a preset intervention state, active braking control of the target vehicle is stopped, including: when the first time length is greater than or equal to a preset time length, active braking control of the target vehicle is stopped.

[0038] Specifically, the displacement depth of the brake pedal of the target vehicle is detected; when the displacement depth is greater than or equal to the preset displacement depth, the displacement depth is detected to be maintained for a first time period greater than or equal to the preset displacement depth, and when the first time period is greater than or equal to the preset time period, it is determined that the intervention state reaches the preset intervention state, and active braking control of the target vehicle is stopped, so that the user obtains braking control authority of the target vehicle.

[0039] In a possible implementation, the method further includes: when the first duration is less than a preset duration, maintaining the brake-by-wire system to perform active braking control on the target vehicle, and maintaining the active braking control for a second duration, which is greater than or equal to the preset duration.

[0040] Specifically, the displacement depth of the brake pedal of the target vehicle is detected; when the displacement depth is greater than or equal to a preset displacement depth, the displacement depth is detected to be maintained for a first time period greater than or equal to the preset displacement depth, and when the first time period is less than the preset time period, the brake-by-wire system is maintained to perform active braking control on the target vehicle.

[0041] When the second time period is reached, active braking control of the target vehicle is stopped, so that the user obtains braking control authority of the target vehicle.

[0042] In the above embodiment, since the displacement depth is greater than or equal to the preset displacement depth, but the first duration during which the displacement depth is maintained greater than or equal to the preset displacement depth does not reach the preset duration. At this time, the intervention state has not completely reached the preset intervention state, but the user has a certain intervention ability at this time, so a second duration is set, and during the second duration, the brake-by-wire system is maintained to actively brake the target vehicle. After the second duration, the target vehicle has reached a safe braking state (such as a complete stop) through active braking; at this time, the user can regain the braking control authority of the target vehicle and perform subsequent operations on the target vehicle.

[0043] In the embodiment of the present invention, the first duration and the second duration are specifically set according to actual application, and the embodiment of the present invention is not specifically limited here.

[0044] In a possible implementation, the method further includes: when the displacement depth is less than a preset displacement depth, maintaining the brake-by-wire system to perform active braking control on the target vehicle until the target vehicle stops.

[0045] Specifically, when the displacement depth is less than the preset displacement depth, the displacement depth may be zero or small. The user's intervention state is significantly different from the preset intervention state, and the user's intervention ability on the target vehicle is low at this time; therefore, the wire control brake system is maintained to perform active braking control on the target vehicle until the target vehicle stops.

[0046] By adopting the above method, the present invention can achieve at least one of the following beneficial effects: 1. When the brake-by-wire system is activated due to a vehicle collision, the user's intervention status on the brake pedal of the target vehicle is detected to further determine whether to continue the vehicle's braking control or hand over the braking control authority to the user, thereby avoiding the risk of subsequent vehicle collisions caused by the driver's misoperation intervention and the interruption and exit of the vehicle's active braking function.

[0047] 2. By detecting the displacement depth of the brake pedal and its maintenance time, it is possible to more accurately determine whether the user really intends to intervene in the brake control and avoid misjudgment. The introduction of dual conditions (displacement depth and maintenance time) to determine the user's intervention status makes the system more robust in handling complex situations.

[0048] 3. When a user's continuous and strong braking intention is detected (i.e. the displacement depth is maintained for a preset time), active braking control is stopped in time to ensure that the user can fully take over the braking operation. This reduces unnecessary intervention in the brake-by-wire system and improves the user's operating experience in emergency situations.

[0049] 4. When the user's initial intervention is detected but the intention is unclear (i.e. the displacement depth is not maintained for the preset time), the brake-by-wire system continues to maintain active braking control, giving the user more time to make a clear response. By setting a second time, it ensures that the vehicle is still under safe control before the user clearly intervenes, reducing the risk of secondary collision.

[0050] 5. When the user's intervention is insufficient (i.e. the brake pedal displacement depth does not reach the preset value), the brake-by-wire system continues to brake automatically until the vehicle comes to a complete stop, ensuring that the risk of secondary collision is effectively reduced under any circumstances.

[0051] 6. By requiring the brake-by-wire system to receive collision signals multiple times in a row before initiating active braking control, false braking caused by a single false alarm or signal interference is effectively avoided.

[0052] A vehicle braking control device provided by the present invention is described below. The vehicle braking control device described below and the vehicle braking control method described above can refer to each other.

[0053] like Figure 2 As shown, the present invention also provides a structural schematic diagram of a vehicle braking control device, the device comprising: The active braking unit 210 is used to start the brake-by-wire system to perform active braking control on the target vehicle when the target vehicle sends a collision signal; a pedal detection unit 220 for detecting a user's intervention status on a brake pedal of a target vehicle; The authority control unit 230 is used to stop the active braking control of the target vehicle when the intervention state reaches a preset intervention state, so that the user obtains the braking control authority of the target vehicle.

[0054] In a possible implementation, the pedal detection unit 220 includes: A displacement detection module, used to detect the displacement depth of the brake pedal of the target vehicle; The duration detection module is used to detect a first duration for which the displacement depth remains greater than or equal to the preset displacement depth when the displacement depth is greater than or equal to the preset displacement depth, and the intervention state is determined according to the displacement depth and the first duration.

[0055] In a possible implementation, the authority control unit 230 includes: The first control module is used to stop active braking control of the target vehicle when the first time length is greater than or equal to the preset time length.

[0056] In a possible implementation, the authority control unit 230 further includes: The second control module is used to maintain the active braking control of the target vehicle by the wire control brake system when the first time length is less than the preset time length, and the time length for maintaining the active braking control is a second time length, and the second time length is greater than or equal to the preset time length; when the second time length is reached, the active braking control of the target vehicle is stopped to allow the user to obtain the braking control authority of the target vehicle.

[0057] In a possible implementation, the authority control unit 230 further includes: The third control module is configured to maintain the active braking control of the target vehicle by the wire control brake system when the displacement depth is less than a preset displacement depth until the target vehicle stops.

[0058] In a possible implementation manner, the active braking unit 210 further includes: The signal detection module is used to start the brake-by-wire system to perform active braking control on the target vehicle when the brake-by-wire system receives the collision signal N times in succession; wherein N is a preset number of times the collision signal is received.

[0059] Figure 3 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 3 As shown, the electronic device may include: a processor 310, a communications interface 320, a memory 330 and a communication bus 340, wherein the processor 310, the communications interface 320 and the memory 330 communicate with each other via the communication bus 340. The processor 310 may call the logic instructions in the memory 330 to execute a vehicle braking control method, the method comprising: When the target vehicle sends out a collision signal, the brake-by-wire system is activated to actively brake the target vehicle; Detecting the user's intervention status on the brake pedal of the target vehicle; When the intervention state reaches a preset intervention state, active braking control of the target vehicle is stopped, so that the user obtains the braking control authority of the target vehicle.

[0060] In addition, the logic instructions in the above-mentioned memory 330 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0061] On the other hand, the present invention further provides a computer program product, the computer program product includes a computer program, the computer program can be stored in a non-transitory computer-readable storage medium, when the computer program is executed by a processor, the computer can execute a vehicle braking control method provided by the above methods, the method includes: When the target vehicle sends out a collision signal, the brake-by-wire system is activated to actively brake the target vehicle; Detecting the user's intervention status on the brake pedal of the target vehicle; When the intervention state reaches a preset intervention state, active braking control of the target vehicle is stopped, so that the user obtains the braking control authority of the target vehicle.

[0062] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, a vehicle braking control method provided by the above methods is implemented, the method comprising: When the target vehicle sends out a collision signal, the brake-by-wire system is activated to actively brake the target vehicle; Detecting the user's intervention status on the brake pedal of the target vehicle; When the intervention state reaches a preset intervention state, active braking control of the target vehicle is stopped, so that the user obtains the braking control authority of the target vehicle.

[0063] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0064] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle braking control method, characterized in that: include: When the target vehicle sends a collision signal, the wire control brake system is activated to perform active braking control on the target vehicle; Detecting a user's intervention status on a brake pedal of the target vehicle; When the intervention state reaches a preset intervention state, active braking control of the target vehicle is stopped, so that the user obtains the braking control authority of the target vehicle.

2. The vehicle braking control method according to claim 1, characterized in that: The detecting the user's intervention state on the brake pedal of the target vehicle includes: detecting a displacement depth of a brake pedal of the target vehicle; When the displacement depth is greater than or equal to a preset displacement depth, it is detected that the displacement depth maintains a first time period greater than or equal to the preset displacement depth, and the intervention state is determined according to the displacement depth and the first time period.

3. The vehicle braking control method according to claim 2, characterized in that: When the intervention state reaches a preset intervention state, stopping the active braking control on the target vehicle includes: When the first time period is greater than or equal to a preset time period, active braking control of the target vehicle is stopped.

4. The vehicle braking control method according to claim 2, characterized in that: Also includes: When the first duration is less than a preset duration, maintaining the brake-by-wire system to perform active braking control on the target vehicle, the duration of maintaining the active braking control is a second duration, and the second duration is greater than or equal to the preset duration; When the second time period is reached, active braking control of the target vehicle is stopped, so that the user obtains braking control authority of the target vehicle.

5. The vehicle braking control method according to claim 2, characterized in that: Also includes: When the displacement depth is less than a preset displacement depth, the brake-by-wire system is maintained to perform active braking control on the target vehicle until the target vehicle stops.

6. The vehicle braking control method according to claim 1, characterized in that: Before starting the brake-by-wire system to perform active braking control on the target vehicle, the method further includes: When the brake-by-wire system receives the collision signal N times in succession, the brake-by-wire system is started to perform active braking control on the target vehicle; wherein N is a preset number of times the collision signal is received.

7. A vehicle brake control device, characterized in that: include: An active braking unit, used to start the wire control brake system to perform active braking control on the target vehicle when the target vehicle sends a collision signal; a pedal detection unit, used to detect a user's intervention status on a brake pedal of the target vehicle; The authority control unit is used to stop the active braking control of the target vehicle when the intervention state reaches a preset intervention state, so that the user obtains the braking control authority of the target vehicle.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the vehicle braking control method according to any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the vehicle braking control method according to any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the vehicle braking control method according to any one of claims 1 to 6 is implemented.

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