Parking braking method, parking braking system and computer readable medium

Abstract

The invention discloses a parking braking method, a parking braking system and a computer readable medium, and the parking braking method comprises the steps: obtaining state signals representing driver behaviors, including a braking state signal, a gear state signal, an engine state signal and a vehicle speed signal; judging whether the vehicle meets static parking conditions or not according to the state signal, wherein the static parking conditions comprise brake release, N gear, engine flameout and 0 current vehicle speed; when the vehicle meets the static parking condition, whether the EPB is activated within set time or not is judged; if yes, the vehicle is controlled to execute current parking operation; if not, the EPB is automatically activated, and the engine starting circuit is cut off. Parking braking is carried out based on the driver operation behavior sequence, the states of the driver operation behaviors are judged step by step, whether the driver is in the parking forgetting state or not is recognized, then the early warning strategy and the parking strategy are intelligently adjusted, the degradation processing strategy is supplemented in the operation behavior sequence, and mistaken parking and parking forgetting are effectively avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of active safety of commercial vehicles, and in particular relates to a parking brake method, a parking brake system and a computer-readable medium. Background Art

[0002] Currently, most commercial vehicle parking brake systems use a mechanical parking device (handbrake), where the driver manually controls the movement of the brake chamber to achieve parking. With the development of diversified vehicle applications, commercial vehicles are gradually adopting electronic parking brake systems, which automatically maintain the vehicle's brake state through electronic control.

[0003] However, current commercial vehicle electronic parking brake systems often rely on fragile sensors such as door switch sensors or seat pressure sensors, resulting in a high failure rate. Failure of any of these sensors can paralyze the electronic parking system. Furthermore, in temporary parking scenarios (such as boarding or alighting a bus), the rate of incorrect parking due to passengers triggering door signals reaches 38%.

[0004] Therefore, in order to solve the above technical problems, it is necessary to provide a parking brake method, a parking brake system and a computer-readable medium. Summary of the Invention

[0005] The purpose of the present invention is to provide a parking brake method, a parking brake system and a computer-readable medium, which are based on the recognition of the driver's operating behavior sequence to achieve anti-forgotten parking, and are suitable for commercial vehicles such as buses and freight trucks.

[0006] In order to achieve the above object, a specific embodiment of the present invention provides the following technical solutions:

[0007] A parking brake method, comprising:

[0008] Acquiring a status signal representing the driver's behavior, wherein the status signal includes a brake status signal, a gear status signal, an engine status signal, and a vehicle speed signal;

[0009] Determining whether the vehicle meets a static parking condition based on the status signal, the static parking condition including: the brake is released, the gear is in N gear, the engine is turned off, and the current vehicle speed is 0;

[0010] When the vehicle meets the static parking conditions, determine whether to activate EPB within the set time;

[0011] If so, the vehicle is controlled to execute the current parking operation;

[0012] If not, the EPB is automatically activated and the engine starting circuit is cut off.

[0013] In one or more embodiments of the present invention, determining whether the vehicle meets the static parking condition according to the status signal includes:

[0014] Determine whether the brake is released;

[0015] If the brake is not released, return to the previous step. If the brake is released, determine whether the gear is N gear;

[0016] If the gear is not N, return to the previous step. If the gear is N, control the vehicle to enter the first warning state and determine whether the engine is turned off.

[0017] If the engine is not turned off, return to the previous step. If the engine is turned off, determine whether the current vehicle speed is 0;

[0018] If the vehicle speed is not 0, the vehicle is controlled to perform a dynamic parking operation. If the vehicle speed is 0, the vehicle is controlled to enter a second warning state and it is determined that the vehicle meets the static parking condition.

[0019] In one or more embodiments of the present invention, the parking brake method further includes: before determining whether the gear position is N gear, determining whether the gear position state signal is lost;

[0020] If not, continue to determine whether the gear is N gear;

[0021] If so, the gear state is determined to be N gear.

[0022] In one or more embodiments of the present invention, the parking brake method further includes: before determining whether the engine is turned off, determining whether the engine status signal is lost:

[0023] If not, continue to determine whether the engine is turned off;

[0024] If so, the vehicle is controlled to automatically activate the EPB and cut off the engine start circuit after a first set time.

[0025] In one or more embodiments of the present invention, the vehicle entering the first warning state includes: the vehicle instrument panel outputting a first prompt signal; and / or,

[0026] The vehicle entering the second warning state includes: the vehicle instrument panel outputting a second prompt signal, and the brake air chamber applying a vibration prompt signal.

[0027] In one or more embodiments of the present invention, controlling a vehicle to perform a dynamic parking operation includes:

[0028] Obtaining vehicle operating parameters, including current acceleration, slope angle of the vehicle, and whether the driver has left the driving seat;

[0029] determining whether the vehicle currently meets dynamic parking conditions based on the vehicle operating parameters;

[0030] If so, the EPB is automatically activated and the engine start circuit is cut off;

[0031] If not, the vehicle is controlled to enter a progressive braking state.

[0032] In one or more embodiments of the present invention, determining whether the vehicle currently satisfies the dynamic parking condition based on the vehicle operating parameters includes: automatically activating the EPB and cutting off the engine start circuit when the vehicle satisfies at least one of the following conditions;

[0033] Condition 1: The current acceleration is less than or equal to the set acceleration threshold;

[0034] Condition 2: The slope angle of the vehicle is greater than or equal to the set slope threshold;

[0035] Condition three: The driver leaves the driving seat.

[0036] In another aspect, the present invention provides a parking brake system comprising a signal acquisition module, a behavior analysis module, a hierarchical execution module, an EPB controller, and an engine control unit;

[0037] The signal acquisition module is used to obtain status signals representing driver behavior, and the status signals include brake status signals, gear status signals, engine status signals and vehicle speed signals;

[0038] The behavior analysis module is used to determine whether the vehicle meets the static parking condition based on the status signal and to determine whether the EPB is activated within a set time. The static parking condition includes: the brake is released, the gear is in the neutral position, the engine is turned off, and the vehicle speed is zero.

[0039] The hierarchical execution module is connected to the behavior analysis module. When the EPB is not activated within a set time, the hierarchical execution module is used to drive the EPB controller to automatically activate the EPB and drive the engine control unit to cut off the engine start circuit.

[0040] In one or more embodiments of the present invention, the parking brake system further includes a fault diagnosis module, which is connected to the behavior analysis module and is used to determine whether the gear status signal is lost and whether the engine status signal is lost.

[0041] On the other hand, the present invention provides a computer-readable medium, wherein the computer-readable medium carries computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the parking brake method according to any one of claims 1 to 7.

[0042] Compared with the prior art, the parking brake method, parking brake system, and computer-readable medium of the present invention perform parking brake based on the driver's operating behavior sequence. By gradually distinguishing the state of the driver's operating behavior, it is identified whether the driver has forgotten to park the vehicle, and then intelligently adjusts the warning strategy and parking strategy.

[0043] By dynamically evaluating driver behavior and adaptively matching required warnings and actions, it not only improves parking brake safety but also enables the vehicle to respond quickly in various parking situations.

[0044] The present invention supplements the degradation processing strategy in the operation behavior sequence to ensure that the probability of incorrect parking is maintained at an extremely low level when some status signals are lost. At the same time, the method can also reduce the probability of forgotten parking, achieve a dynamic balance between incorrect parking and forgotten parking, and further improve the status judgment accuracy and parking safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in 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 only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 This is a flow chart of the parking brake method in Example 1 of the present invention;

[0047] Figure 2 This is a control logic diagram of the parking brake method in Example 1 of the present invention;

[0048] Figure 3 This is a schematic diagram of the parking brake system in Example 2 of the present invention. DETAILED DESCRIPTION

[0049] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present disclosure.

[0050] Currently, most commercial vehicle parking brake systems use a mechanical parking device (handbrake), where the driver manually controls the movement of the brake chamber to achieve parking. With the development of diversified vehicle applications, commercial vehicles are gradually adopting electronic parking brake systems, which automatically maintain the vehicle's brake state through electronic control.

[0051] However, current commercial vehicle electronic parking brake systems often rely on vulnerable sensors such as door lock sensors and seat pressure sensors, resulting in a high failure rate. Failure of any of these sensors can paralyze the electronic parking system. Furthermore, in temporary parking scenarios (such as boarding or alighting a bus), the rate of incorrect parking, caused by passengers triggering door signals, reaches 38%.

[0052] Based on an in-depth analysis of the aforementioned technical issues, this paper proposes a parking brake control strategy based on the driver's operating behavior sequence. This strategy no longer relies on door sensor signals, but instead gradually determines the driver's operating behavior to identify whether the driver has forgotten to park, and then intelligently adjusts the warning strategy and parking strategy.

[0053] The core of this disclosure is that by dynamically evaluating the driver's behavior characteristics and adaptively matching the required warnings and operations, it not only improves the safety of parking brakes, but also enables the vehicle to respond quickly in various parking situations.

[0054] The control method provided by the present disclosure supplements the degradation processing strategy in the operation behavior sequence to ensure that the probability of incorrect parking is maintained at an extremely low level when some status signals are lost. At the same time, the method can also reduce the probability of forgotten parking, achieve a dynamic balance between incorrect parking and forgotten parking, and further improve the accuracy of status judgment and parking safety.

[0055] The present disclosure provides a parking brake method, comprising:

[0056] Acquiring status signals representing driver behavior, including brake status signals, gear status signals, engine status signals, and vehicle speed signals;

[0057] Determine whether the vehicle meets the static parking conditions based on the status signal. The static parking conditions include: brake released, gear in N gear, engine off and current vehicle speed is 0;

[0058] When the vehicle meets the static parking conditions, determine whether to activate EPB within the set time;

[0059] If so, the vehicle is controlled to execute the current parking operation; if not, the EPB is automatically activated and the engine start circuit is cut off.

[0060] Furthermore, determining whether the vehicle meets the static parking condition according to the status signal includes:

[0061] Determine whether the brake is released;

[0062] If the brake is not released, return to the previous step. If the brake is released, determine whether the gear is N gear;

[0063] If the gear is not N, return to the previous step. If the gear is N, control the vehicle to enter the first warning state and determine whether the engine is turned off.

[0064] If the engine is not turned off, return to the previous step. If the engine is turned off, determine whether the current vehicle speed is 0;

[0065] If the vehicle speed is not 0, the vehicle is controlled to perform a dynamic parking operation. If the vehicle speed is 0, the vehicle is controlled to enter a second warning state and it is determined that the vehicle meets the static parking condition.

[0066] Furthermore, the parking brake method further includes: before determining whether the gear position is N gear, determining whether the gear position state signal is lost;

[0067] If not, continue to determine whether the gear is N gear;

[0068] If so, the gear state is determined to be N gear.

[0069] Furthermore, the parking brake method further includes: before determining whether the engine is turned off, determining whether the engine status signal is lost:

[0070] If not, continue to determine whether the engine is turned off;

[0071] If so, the vehicle is controlled to automatically activate the EPB and cut off the engine start circuit after a first set time.

[0072] The present invention will be further described below with reference to specific embodiments.

[0073] Example 1:

[0074] like Figure 1 As shown, this embodiment provides a parking brake method, including:

[0075] S101, obtaining a status signal representing the driver's behavior, the status signal including a brake status signal, a gear status signal, an engine status signal, and a vehicle speed signal;

[0076] S102, determining whether the vehicle meets static parking conditions based on the status signal, the static parking conditions including: brake released, gear in N, engine off, and current vehicle speed is 0;

[0077] S103, when the vehicle meets the static parking condition, determining whether the EPB is activated within the set time;

[0078] S104: If yes, the vehicle is controlled to execute the current parking operation; if not, the EPB is automatically activated and the engine start circuit is cut off.

[0079] It should be noted that the EPB in this embodiment is an electronic parking brake system (Electronic Parking Brake), which is used to replace the traditional manual parking brake, including an EPB controller and an EPB caliper mechanism. "Activating EPB" in this application includes the EPB controller controlling the EPB caliper mechanism to clamp the wheel to achieve braking of the vehicle.

[0080] The engine starting circuit in this embodiment is the core component of the vehicle's ignition system, responsible for converting battery electrical energy into mechanical energy for the starter, driving the engine crankshaft until ignition is successful. It will be appreciated that engine starting circuits are well known in the art and will not be described in detail here. Any known or unknown engine starting circuit may be used herein without restriction.

[0081] This embodiment is independent of the signals of vulnerable sensors such as door switch signals and seat pressure signals, thereby avoiding misparking caused by temporary parking of the bus.

[0082] In this embodiment, S103 specifically includes: when the vehicle meets the static parking conditions, determining whether EPB is activated within 200ms. It should be noted that this embodiment discloses "determining whether EPB is activated within a set time," which actually refers to a driver's behavior assessment. If the driver activates EPB, the vehicle is controlled to execute the current parking maneuver; otherwise, forced parking is performed, automatically activating EPB and disconnecting the engine start circuit.

[0083] like Figure 2 As shown, in this embodiment, determining whether the vehicle meets the static parking condition based on the status signal specifically includes:

[0084] Determine whether the brake is released;

[0085] If the brake is not released, return to the previous step (i.e. return to the starting state and continue to determine whether the brake is released). If the brake is released, determine whether the gear is N gear;

[0086] If the gear position is not N, return to the previous step (i.e., continue to determine whether the gear position is N). If the gear position is N, control the vehicle to enter the first warning state and determine whether the engine is turned off.

[0087] If the engine is not turned off, return to the previous step (i.e. continue to determine whether the engine is turned off). If the engine is turned off, determine whether the current vehicle speed is 0;

[0088] If the vehicle speed is not 0, the vehicle is controlled to perform a dynamic parking operation. If the vehicle speed is 0, the vehicle is controlled to enter a second warning state and it is determined that the vehicle meets the static parking condition.

[0089] The brake status signal, gear status signal, engine status signal, and vehicle speed signal in this embodiment all represent the driver's operating behavior. This embodiment implements a multi-level warning and execution mechanism based on the driver's operating behavior sequence. This embodiment provides different warnings based on different situations, avoiding the problem of frequent false triggering of parking.

[0090] When the brakes are not released, it indicates that the driver is still braking on their own and does not need to park the vehicle. When the brakes are released, the driver may be temporarily parking or have forgotten to park the vehicle. For example, if a bus driver wants to temporarily stop the vehicle while passengers are getting on or off, directly executing forced parking may increase the load on the vehicle's motor and reduce the driving experience. Therefore, this embodiment has designed a next-level logical judgment, namely, determining whether the gear is in N gear at this time.

[0091] When the gear is in N, the vehicle enters the first warning state to provide a preliminary warning to the driver. If the driver responds to the first warning state, such as parking (e.g., braking, activating EPB) or changing gears, the vehicle exits the first warning state.

[0092] If the engine is turned off, the vehicle speed is determined to be 0. The vehicle speed signal can initially reveal whether the vehicle is in a rolling state. By judging the vehicle speed, it is determined whether the vehicle needs to perform static parking or dynamic parking.

[0093] When the vehicle speed reaches 0, indicating that the vehicle meets the static parking condition, the vehicle is controlled to enter the second warning state to further remind the driver. If the driver responds to the second warning state, for example, by actively activating EPB, the vehicle exits the second warning state.

[0094] This multi-level logic analysis effectively prevents the electronic parking system from accidentally activating during temporary stops, particularly for buses that frequently make temporary stops, thereby preventing misparking. Compared to traditional strategies based on door switch signals, driver's seat signals, or a single signal, this method enables fine-grained adjustments based on the driver's actual operating status, preventing forgotten or misparked vehicles and improving the vehicle's adaptability and intelligence.

[0095] Furthermore, in this embodiment, before determining whether the gear position is N gear, it is determined whether the gear position state signal is lost;

[0096] If not, continue to determine whether the gear is N gear;

[0097] If so, the gear state is determined to be N gear.

[0098] Furthermore, before determining whether the engine is turned off, determine whether the engine status signal is lost:

[0099] If not, continue to determine whether the engine is turned off;

[0100] If so, the vehicle is controlled to automatically activate the EPB and cut off the engine start circuit after a first set time.

[0101] It is understandable that even without using vulnerable sensors, the brake status signal, gear status signal, engine status signal and vehicle speed signal may still be lost. This embodiment determines whether the vehicle meets the static parking conditions based on the status signal combined with the preset judgment logic, and supports single signal loss and multiple signal loss.

[0102] When the gear status signal is lost, the judgment logic is conservatively advanced to avoid misjudgment caused by directly returning to the previous step. At the same time, due to the existence of the next step judgment process, it can effectively avoid forgetting to park.

[0103] When the engine status signal is lost, the vehicle is directly controlled to enter the timed parking mode, that is, the EPB is automatically activated and the engine start circuit is cut off after the first set time, which greatly improves the fault coverage rate.

[0104] In one embodiment, the vehicle entering the first warning state includes: the vehicle instrument panel outputting a first prompt signal. In this embodiment, the first prompt signal includes a yellow warning light on the instrument panel, which visually prompts the driver to park the vehicle.

[0105] In one specific embodiment, the vehicle entering the second warning state includes: the vehicle instrument panel outputting a second warning signal, and the brake chamber applying a vibration warning signal. In this embodiment, the second warning signal includes a red pulse warning signal output by the vehicle instrument panel, and the vibration warning signal includes a vibration of 0.3MPa to 0.5MPa, which visually and tactilely prompts the driver to park the vehicle.

[0106] Furthermore, in this embodiment, controlling the vehicle to perform a dynamic parking operation includes:

[0107] Obtain vehicle operating parameters, including current acceleration, slope angle of the vehicle, and whether the driver has left the driving seat;

[0108] Determine whether the vehicle currently meets dynamic parking conditions based on vehicle operating parameters;

[0109] If so, the EPB is automatically activated and the engine start circuit is cut off;

[0110] If not, the vehicle is controlled to enter a progressive braking state.

[0111] The progressive braking states in this embodiment include audible and visual warnings, power restriction, delayed parking, and emergency braking. It will be appreciated that progressive braking states are well known in the prior art and will not be described in detail herein. Any known or unknown audible and visual warnings, power restriction, delayed parking, and emergency braking states may be used herein without restriction.

[0112] Furthermore, in this embodiment, determining whether the vehicle currently meets the dynamic parking condition based on the vehicle operating parameters includes: automatically activating the EPB and cutting off the engine start circuit when the vehicle meets at least one of the following conditions;

[0113] Condition 1: The current acceleration is less than or equal to the set acceleration threshold;

[0114] Condition 2: The slope angle of the vehicle is greater than or equal to the set slope threshold;

[0115] Condition three: The driver leaves the driving seat.

[0116] The system in this embodiment uses sensors to monitor parameters such as the vehicle's acceleration, the slope angle of the vehicle's location, and whether the driver has left the driver's seat, and makes judgments based on preset thresholds. The acceleration threshold set in this embodiment is -0.3m / s 2 , set the slope threshold to 5%.

[0117] It should be noted that although a seat pressure sensor is used here, the probability of triggering the judgment of whether the vehicle currently meets the dynamic parking conditions is low, and the driver leaving the driving seat is one of the judgment conditions. Even if the seat pressure sensor is damaged, the probability of the system making a misjudgment is also low.

[0118] Example 2:

[0119] like Figure 3 As shown, this embodiment provides a parking brake system, including a signal acquisition module 31 , a behavior analysis module 32 , a hierarchical execution module 33 , a fault diagnosis module 34 , an EPB controller 331 and an engine control unit 332 .

[0120] The signal acquisition module 31 is used to obtain status signals representing the driver's behavior, including brake status signals, gear status signals, engine status signals and vehicle speed signals;

[0121] The behavior analysis module 32 is used to determine whether the vehicle meets the static parking conditions based on the status signal and whether the EPB is activated within a set time. The static parking conditions include: the brake is released, the gear is in neutral, the engine is turned off, and the vehicle speed is zero.

[0122] The hierarchical execution module 33 is connected to the behavior analysis module 32. When the EPB is not activated within a set time, the hierarchical execution module is used to drive the EPB controller 331 to automatically activate the EPB and drive the engine control unit 332 to cut off the engine starting circuit.

[0123] The fault diagnosis module 34 is connected to the behavior analysis module 32 and is used to determine whether the gear status signal is lost and whether the engine status signal is lost.

[0124] Furthermore, the signal acquisition module 31 in this embodiment includes a brake pedal position sensor, a transmission gear sensor, an engine switch controller, a vehicle speed sensor, an acceleration sensor, a seat pressure sensor and a slope sensor, etc., wherein the brake pedal position sensor, the transmission gear sensor, the engine switch controller, the vehicle speed sensor, the acceleration sensor, the seat pressure sensor and the slope sensor are all connected to the behavior analysis module through the CAN bus.

[0125] It is understood that the above sensors are well known in the prior art and therefore will not be described in detail herein, and any known or unknown sensors may be used herein without limitation.

[0126] The embodiments of the present disclosure further provide a computer-readable medium carrying computer-executable instructions. When the computer-executable instructions are executed by a processor, they can be used to implement the various operations and functions of the parking brake method described in the various embodiments of this specification.

[0127] The computer-readable medium in the present disclosure can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or component, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or device.

[0128] In the present disclosure, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, RF, etc., or any suitable combination thereof.

[0129] Those skilled in the art will appreciate that embodiments of the present disclosure may be provided as methods, systems, or computer program products. Thus, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0130] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, apparatuses, systems, and computer program products of the embodiments of the present disclosure. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as the combination of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0131] It will be apparent to those skilled in the art that the present disclosure is not limited to the details of the exemplary embodiments described above and that the present disclosure can be implemented in other specific forms without departing from the spirit or essential characteristics of the present disclosure. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present disclosure is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present disclosure. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0132] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A parking brake method, characterized in that: include: Acquiring a status signal representing the driver's behavior, wherein the status signal includes a brake status signal, a gear status signal, an engine status signal, and a vehicle speed signal; Determining whether the vehicle meets a static parking condition based on the status signal, the static parking condition including: the brake is released, the gear is in N gear, the engine is turned off, and the current vehicle speed is 0; When the vehicle meets the static parking conditions, determine whether to activate EPB within the set time; If so, the vehicle is controlled to execute the current parking operation; If not, the EPB is automatically activated and the engine starting circuit is cut off.

2. The parking brake method according to claim 1, characterized in that: Determining whether the vehicle meets the static parking condition according to the status signal includes: Determine whether the brake is released; If the brake is not released, return to the previous step. If the brake is released, determine whether the gear is N gear; If the gear is not N, return to the previous step. If the gear is N, control the vehicle to enter the first warning state and determine whether the engine is turned off. If the engine is not turned off, return to the previous step. If the engine is turned off, determine whether the current vehicle speed is 0; If the vehicle speed is not 0, the vehicle is controlled to perform a dynamic parking operation. If the vehicle speed is 0, the vehicle is controlled to enter a second warning state and it is determined that the vehicle meets the static parking condition.

3. The parking brake method according to claim 2, characterized in that: The parking brake method further includes: before determining whether the gear position is N gear, determining whether the gear position state signal is lost; If not, continue to determine whether the gear is N gear; If so, the gear state is determined to be N gear.

4. The parking brake method according to claim 2, characterized in that: The parking brake method further includes: before determining whether the engine is turned off, determining whether the engine status signal is lost: If not, continue to determine whether the engine is turned off; If so, the vehicle is controlled to automatically activate the EPB and cut off the engine start circuit after a first set time.

5. The parking brake method according to claim 2, characterized in that: The vehicle entering the first warning state includes: the vehicle instrument panel outputting a first prompt signal; and / or, The vehicle entering the second warning state includes: the vehicle instrument panel outputting a second prompt signal, and the brake air chamber applying a vibration prompt signal.

6. The parking brake method according to claim 1, characterized in that: Control the vehicle to perform dynamic parking maneuvers, including: Obtaining vehicle operating parameters, including current acceleration, slope angle of the vehicle, and whether the driver has left the driving seat; determining whether the vehicle currently meets dynamic parking conditions based on the vehicle operating parameters; If so, the EPB is automatically activated and the engine start circuit is cut off; If not, the vehicle is controlled to enter a progressive braking state.

7. The parking brake method according to claim 6, characterized in that: Determining whether the vehicle currently meets the dynamic parking condition based on the vehicle operating parameters includes: automatically activating the EPB and cutting off the engine start circuit when the vehicle meets at least one of the following conditions; Condition 1: The current acceleration is less than or equal to the set acceleration threshold; Condition 2: The slope angle of the vehicle is greater than or equal to the set slope threshold; Condition three: The driver leaves the driving seat.

8. A parking brake system, characterized in that: The parking brake system includes a signal acquisition module, a behavior analysis module, a hierarchical execution module, an EPB controller and an engine control unit; The signal acquisition module is used to obtain status signals representing driver behavior, and the status signals include brake status signals, gear status signals, engine status signals and vehicle speed signals; The behavior analysis module is used to determine whether the vehicle meets the static parking condition based on the status signal and to determine whether the EPB is activated within a set time. The static parking condition includes: the brake is released, the gear is in the neutral position, the engine is turned off, and the vehicle speed is zero. The hierarchical execution module is connected to the behavior analysis module. When the EPB is not activated within a set time, the hierarchical execution module is used to drive the EPB controller to automatically activate the EPB and drive the engine control unit to cut off the engine start circuit.

9. The parking brake system according to claim 8, characterized in that: The parking brake system further includes a fault diagnosis module, which is connected to the behavior analysis module and is used to determine whether the gear status signal is lost and whether the engine status signal is lost.

10. A computer-readable medium, characterized in that The computer-readable medium carries computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the parking brake method according to any one of claims 1 to 7.

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