Parking control method and device, storage medium and vehicle

Abstract

The invention relates to the technical field of vehicle braking, in particular to a parking control method and device, a storage medium and a vehicle. The parking control method comprises the steps that when a vehicle control module and a parking control module are in response to disconnection, the parking control module receives a vehicle state signal and a braking intention signal collected by an integrated braking module, the integrated braking module and the parking control module are located on the same network segment, and parking calipers are controlled to conduct clamping or releasing according to the vehicle state signal and the braking intention signal, so that vehicle parking or parking releasing is achieved. The parking safety can be guaranteed, and the fault handling difficulty is reduced.

Description

Technical Field

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

[0002] Nowadays, most vehicles are equipped with electronic parking brakes (EPB). In line with this trend, the traditional separate EPB switch is gradually being replaced by the P gear operation method to conveniently realize the parking and releasing functions of the EPB system.

[0003] However, the current technical solution has significant flaws. In the vehicle's electronic architecture, the vehicle control module is deployed in the power network segment, while the electronic parking system is located in the chassis network segment. If the gateway responsible for signal relay or the vehicle control module fails, the parking clamp or release signals will not be properly issued and forwarded. As a result, the parking control module of the electronic parking system will be unable to clamp or release the parking caliper. As a result, the driver will be unable to temporarily park the vehicle to ensure safety, nor will they be able to release the brake caliper to allow normal driving. Summary of the Invention

[0004] The object of the present invention is to provide a parking control method, device, storage medium and vehicle, which can ensure parking safety and reduce the difficulty of fault handling.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention discloses a parking control method, which includes: in response to the disconnection between the vehicle control module and the parking control module, the parking control module receives a vehicle status signal and a braking intention signal collected by an integrated braking module, the integrated braking module and the parking control module are located in the same network segment, and controls the clamping or release of the parking caliper according to the vehicle status signal and the braking intention signal to achieve vehicle parking or parking release.

[0006] Furthermore, controlling the clamping or release of the parking caliper based on the vehicle status signal and the braking intention signal specifically includes: comparing the vehicle status signal received by the parking control module with a first preset condition, and comparing the received braking intention signal with a second preset judgment condition; in response to the vehicle status signal satisfying the first preset condition and the braking intention signal satisfying the second preset judgment condition, controlling the parking caliper to clamp or release; otherwise, terminating the process and not executing parking control.

[0007] Furthermore, the vehicle status signal includes a vehicle speed, and the first preset condition includes that the vehicle speed does not exceed a preset vehicle speed threshold.

[0008] Furthermore, the braking intention signal includes a brake pedal signal, and the second preset condition includes a parking caliper clamping determination condition and a parking caliper release condition; the parking caliper clamping determination condition includes that the brake pedal stroke is greater than a first preset stroke threshold and the duration exceeds a first preset time threshold; the parking caliper release condition includes that the brake pedal is depressed N times continuously, that is, the brake pedal stroke is greater than the second preset stroke N times continuously, the time interval between two adjacent depressions does not exceed the second preset time threshold, and the brake pressure of the last depression of the brake pedal is greater than the preset pressure threshold and the duration exceeds a third time threshold.

[0009] Furthermore, it also includes: in response to the vehicle control module and the parking control module being in a connected state, the parking control module receives a parking action instruction sent by the vehicle control module, and controls the clamping or release of the parking caliper according to the parking action instruction.

[0010] Furthermore, the generation of the parking action instruction includes: the vehicle control module collects the vehicle gear signal, and generates a parking caliper clamping action instruction in response to the vehicle gear being in P gear or switching to P gear from a gear other than P gear; and generates a parking caliper release action instruction in response to the vehicle gear switching from P gear to a gear other than P gear.

[0011] Furthermore, the vehicle control module and the parking control module are in different network segments, and the two are connected for data transmission via a gateway.

[0012] In a second aspect, the present invention discloses a parking control device, comprising: Integrated braking module for collecting vehicle status signals and braking intention signals; The parking control module receives a vehicle status signal and a braking intention signal collected by an integrated braking module in response to the disconnection between the vehicle control module and the parking control module. The integrated braking module and the parking control module are located in the same network segment, and controls the clamping or release of the parking caliper according to the vehicle status signal and the braking intention signal to achieve vehicle parking or parking release.

[0013] In a third aspect, the present invention discloses a computer-readable storage medium having a computer program stored thereon, which implements the steps of the above-mentioned parking control method when executed by a processor.

[0014] In a fourth aspect, the present invention discloses a vehicle, comprising: a memory storing computer program instructions; and one or more processors for executing the computer program instructions in the memory to implement the steps of the above-mentioned parking control method.

[0015] The present invention has the following unexpected beneficial effects: The parking control method of the present invention, when the connection between the vehicle control module and the parking control module is disconnected, receives the vehicle status signal and braking intention signal collected by the integrated braking module through the parking control module. The integrated braking module and the parking control module are located on the same network segment and control the clamping or releasing of the parking caliper based on the vehicle status signal and braking intention signal, thereby parking or releasing the vehicle. This method overcomes the limitation of traditional solutions that rely on signal relay between the vehicle control module and the gateway. When the vehicle control module and the parking control module are disconnected, the integrated braking module and the parking control module are located on the same network segment, allowing direct transmission of the vehicle status signal and braking intention signal. This allows the parking control module to still accurately control the movement of the parking caliper based on real-time vehicle driving status information, thereby temporarily parking or releasing the vehicle. This method effectively reduces the difficulty of handling vehicle failures, avoids safety hazards such as the vehicle rolling down a slope or becoming immobile due to the inability to park or release the brakes, greatly improves vehicle safety during driving and parking, and reduces the risk of property damage and traffic accidents caused by vehicle loss of control. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the implementation or prior art description. Obviously, the drawings described below are only some embodiments of the present invention.

[0017] Figure 1 A flow chart of an implementation of the parking control method according to an embodiment of the present invention is shown.

[0018] Figure 2 A flow chart of another implementation of the parking control method according to an embodiment of the present invention is shown.

[0019] Figure 3 A schematic flow chart of an implementation method of controlling caliper clamping according to an embodiment of the present invention is shown.

[0020] Figure 4 A schematic flow chart of an implementation method of controlling the release of a caliper according to an embodiment of the present invention is shown.

[0021] Figure 5 A flow chart of another implementation of the parking control method according to an embodiment of the present invention is shown.

[0022] Figure 6 FIG2 shows a schematic structural diagram of a parking control device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The following describes the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily appreciate the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the various details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0024] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. The illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0025] In one embodiment, the present invention discloses a parking control method, see Figure 1 As shown, the method includes: in response to the disconnection between the vehicle control module and the parking control module, the parking control module receives the vehicle status signal and the braking intention signal collected by the integrated braking module, the integrated braking module and the parking control module are located in the same network segment, and controls the clamping or release of the parking caliper according to the vehicle status signal and the braking intention signal to achieve vehicle parking or parking release.

[0026] On the one hand, the parking control method described herein, when the connection between the vehicle control module and the parking control module is disconnected, receives the vehicle status signal and braking intention signal collected by the integrated braking module through the parking control module. The integrated braking module and the parking control module are located on the same network segment and control the clamping or releasing of the parking caliper based on the vehicle status signal and braking intention signal, thereby parking or releasing the vehicle. This overcomes the limitation of traditional solutions that rely on signal relay between the vehicle control module and the gateway. When the connection between the two is disconnected due to a failure, the integrated braking module and the parking control module are located on the same network segment, allowing direct transmission of the vehicle status signal and braking intention signal. This allows the parking control module to still accurately control the movement of the parking caliper based on real-time vehicle driving status information, thereby temporarily parking or releasing the vehicle. This effectively reduces the difficulty of handling vehicle failures, avoids safety hazards such as the vehicle rolling down a slope or becoming immobile due to the inability to park or release the brakes, greatly improves vehicle safety during driving and parking, and reduces the risk of property damage and traffic accidents caused by vehicle loss of control.

[0027] On the other hand, since the integrated braking module and the parking control module are located in the same network segment, that is, by deploying the key signal acquisition and processing modules in the same network segment, the delay, interference and failure risks caused by cross-segment signal transmission are reduced, an independent and stable emergency parking control link is constructed, the redundant design of the vehicle electronic control system is improved, the stability and reliability of the entire parking control system are enhanced, and the fault tolerance performance of the vehicle electronic architecture is improved.

[0028] As a preferred embodiment of the present invention, see Figure 2 As shown, controlling the parking caliper to clamp or release based on the vehicle status signal and the braking intention signal specifically includes: comparing the vehicle status signal received by the parking control module with a first preset condition, and comparing the received braking intention signal with a second preset judgment condition; in response to the vehicle status signal satisfying the first preset condition and the braking intention signal satisfying the second preset judgment condition, controlling the parking caliper to clamp or release; otherwise, terminating the process without executing parking control.

[0029] This preferred implementation enhances control accuracy by implementing dual-condition filtering. Triggering parking based on a single signal (e.g., vehicle status or braking intent alone) can lead to erroneous operation due to signal interference or sensor failure. For example, the vehicle speed sensor could falsely indicate "zero speed" and trigger automatic parking, or the brake pedal could accidentally engage and engage. This approach requires both the vehicle status signal and the braking intent signal to meet a first pre-set condition for parking to occur. This logical AND relationship significantly reduces the probability of false triggering.

[0030] Among them, the first preset condition is usually associated with the vehicle's stationary state (such as the vehicle speed is 0), and the second preset condition is associated with the driver's active operation (such as stepping on the brake). The combination of the two makes the parking trigger more in line with the real scenario of "the vehicle is stopped and the driver intends to park", avoiding the problem of multiple operations or false triggering in traditional single-condition triggering.

[0031] As a preferred embodiment of the present invention, see Figure 3 and Figure 4 As shown, the vehicle status signal includes vehicle speed, and the first preset condition includes that the vehicle speed does not exceed a preset vehicle speed threshold.

[0032] Vehicle speed is the most direct parameter to measure whether the vehicle is in a "parkable state". When the vehicle speed is ≤ the preset threshold, for example, the preset speed threshold is set to 5km / h or 0km / h, the system determines that the vehicle is close to or has stopped. At this time, executing parking clamping can avoid abnormal force on the parking caliper due to the vehicle still being in motion, or safety hazards such as vehicle slipping or tailspinning caused by dynamic parking.

[0033] By adjusting the preset speed threshold, you can adapt to different driving scenarios. For example, the preset speed threshold for urban roads is set to 3km / h, and the preset speed threshold for off-road scenes is set to 8km / h. For example, the application scenarios are: Low-speed creeping scenario: For example, when moving a car in a parking lot, parking can be triggered when the vehicle speed is ≤5km / h, which is convenient for short-distance parking operations.

[0034] Emergency failure scenario: If the system detects an emergency situation such as brake failure, it can temporarily raise the threshold. For example, if the preset speed threshold is set to 10km / h, the vehicle can be forced to park at a higher speed to improve emergency safety.

[0035] As a preferred embodiment of the present invention, see Figure 3 and Figure 4 As shown, the braking intention signal includes a brake pedal signal, and the second preset condition includes a parking caliper clamping determination condition and a parking caliper releasing condition.

[0036] See also Figure 3 As shown, the conditions for determining the clamping of the parking caliper include the duration of the brake pedal stroke being greater than the first preset stroke threshold exceeding the first preset time threshold. Through the "stroke + time" double verification to avoid misoperation, the brake pedal stroke must exceed the first preset threshold to prevent the driver from lightly stepping on the pedal to trigger parking. For example: if the first preset stroke threshold is set to 50% of the stroke, the timing will only start when the driver actively steps deeply on the brake pedal. The duration exceeds the first preset time threshold (such as 1.5 seconds), which can distinguish between "emergency braking" and "parking operation". For example: during emergency braking, the pedal stroke may exceed the first preset stroke threshold, but the duration is short, and the system will not mistakenly judge it as parking; while when parking, the driver usually keeps the pedal deeply depressed, and clamping is performed only after the time condition is met, thereby reducing incorrect parking during dynamic driving.

[0037] See also Figure 4 As shown, the release conditions of the parking caliper include the brake pedal being stepped on N times continuously, that is, the brake pedal stroke is greater than the second preset stroke N times in a row, the time interval between two adjacent steppings does not exceed the second preset time threshold, and the duration of the brake pressure of the last stepping of the brake pedal being greater than the preset pressure threshold exceeds the third time threshold. This setting can avoid the release of the parking caliper due to a single mistake. For example: if the driver accidentally steps on the pedal once, the system will not respond; if it is stepped on three times in a row, it will be determined as "active release intention", which is especially suitable for bumpy roads or scenarios where the driver's limbs accidentally touch the pedal. By setting the interval between adjacent steppings not to exceed the second preset time, and the pressure of the last step lasting more than the third time, "unconscious rapid stepping" can be further filtered. Only the driver's rhythmic and continuous force operation will be recognized by the system as a release instruction, thereby improving operational safety.

[0038] This preferred implementation method converts the driver's "parking intention" into quantifiable operating parameters through "multi-dimensional brake pedal signal + combined condition judgment", which not only realizes the underlying logic of "anti-mistouch and high safety", but also improves user experience and system flexibility through "adjustable parameters and scene adaptation".

[0039] As a preferred embodiment of the present invention, see Figure 5 As shown, the parking control method of the present invention also includes: in response to the vehicle control module and the parking control module being in a connected state, the parking control module receives a parking action instruction sent by the vehicle control module, and controls the clamping or release of the parking caliper according to the parking action instruction.

[0040] When the communication link is normal, the parking control module acts as an execution unit, directly receiving parking action commands from the vehicle control module without the need to independently process complex signal fusion. This setting, on the one hand, ensures the uniformity of commands, and the vehicle control module can integrate all vehicle signals (such as vehicle speed, gear position, battery status, and driver operation) to prevent the parking control module from malfunctioning due to misjudgment of local signals. On the other hand, it can form a complete redundant system with the failure mode. When the connection is normal, the vehicle control module has the highest control authority, ensuring that the parking action is coordinated with the vehicle status. When the communication is disconnected, the parking control module maintains basic functions by directly connecting to the integrated brake module, avoiding the risk of "parking failure due to vehicle-wide communication failure" and minimizing the impact of single-point failures. It is particularly suitable for new energy vehicles or autonomous vehicles with high functional safety requirements.

[0041] As a preferred embodiment of the present invention, the generation of the parking action instruction includes: the vehicle control module collects the vehicle gear signal, and generates a parking caliper clamping action instruction in response to the vehicle gear being in P gear or switching to P gear from a gear other than P gear; and generates a parking caliper release action instruction in response to the vehicle gear switching from P gear to a gear other than P gear.

[0042] For example, in the clamping scenario, when the gear is shifted into P (regardless of whether it is switched from D / R / N or directly engaged after the vehicle starts), the vehicle control module automatically generates a clamping command, without the driver having to apply the electronic parking brake, in line with the intuitive operating habit of "engaging P means parking"; Release scenario: When the gear is switched out of P gear, for example, when shifting into D gear to start, the system automatically releases the parking caliper to avoid brake wear caused by the driver forgetting to release the handbrake. It is especially suitable for novice drivers.

[0043] As a preferred embodiment of the present invention, the vehicle control module and the parking control module are in different network segments, and the two are connected for data transmission via a gateway.

[0044] Different network segments have independent communication protocols and electrical characteristics. If a fault occurs in one segment, it is limited to that segment and does not spread to other segments. For example, if the parking control module's segment experiences communication anomalies due to wiring harness wear, the segment containing the vehicle control module will continue to operate normally, ensuring that key functions such as the powertrain and steering system are not affected.

[0045] As the hub for cross-segment communication, the gateway can verify and filter the transmitted data.

[0046] In one embodiment, the present invention discloses a parking control device, see Figure 6 As shown, the control device includes: An integrated braking module 10 for collecting vehicle status signals and braking intention signals; The parking control module 20 receives the vehicle status signal and the braking intention signal collected by the integrated braking module 10 in response to the disconnection between the vehicle control module 30 and the parking control module 20. The integrated braking module 10 and the parking control module 20 are located in the same network segment, and controls the clamping or release of the parking caliper according to the vehicle status signal and the braking intention signal to achieve vehicle parking or parking release.

[0047] Further, see Figure 6 As shown, the vehicle control module 30 and the parking control module 20 are in different network segments, and the two are connected for data transmission via a gateway 40 .

[0048] In one embodiment, the present invention discloses a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the above-mentioned parking control method are implemented.

[0049] In one embodiment, the present invention discloses a vehicle, comprising: a memory storing computer program instructions; and one or more processors configured to execute the computer program instructions in the memory to implement the steps of the above-mentioned parking control method.

[0050] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by those skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. A parking control method, characterized in that: include: In response to the disconnection between the vehicle control module and the parking control module, the parking control module receives the vehicle status signal and braking intention signal collected by the integrated braking module. The integrated braking module and the parking control module are located in the same network segment. The parking caliper is clamped or released according to the vehicle status signal and braking intention signal to achieve vehicle parking or parking release.

2. The parking control method according to claim 1, characterized in that: Controlling the parking caliper to clamp or release according to the vehicle state signal and the braking intention signal specifically includes: The vehicle status signal received by the parking control module is compared with a first preset condition, and the received braking intention signal is compared with a second preset judgment condition. In response to the vehicle status signal satisfying the first preset condition and the braking intention signal satisfying the second preset judgment condition, the parking caliper is controlled to clamp or release; otherwise, the process is terminated and parking control is not performed.

3. The parking control method according to claim 1, characterized in that: The vehicle status signal includes a vehicle speed, and the first preset condition includes that the vehicle speed does not exceed a preset vehicle speed threshold.

4. The parking control method according to claim 2, characterized in that: The braking intention signal includes a brake pedal signal, and the second preset condition includes a parking caliper clamping determination condition and a parking caliper releasing condition; The parking caliper clamping determination condition includes that the duration of the brake pedal stroke being greater than a first preset stroke threshold exceeds a first preset time threshold; The parking caliper release condition includes that the brake pedal is pressed N times continuously, that is, the brake pedal stroke is greater than the second preset stroke N times in a row, the time interval between two adjacent pressings does not exceed the second preset time threshold, and the brake pressure of the last pressing of the brake pedal is greater than the preset pressure threshold for a duration that exceeds the third time threshold.

5. The parking control method according to claim 1, characterized in that: Also includes: In response to the vehicle control module and the parking control module being in a connected state, the parking control module receives a parking action instruction sent by the vehicle control module, and controls the parking caliper to clamp or release according to the parking action instruction.

6. The parking control method according to claim 5, characterized in that: The generation of parking action command includes: The vehicle control module collects a vehicle gear position signal and generates a parking caliper clamping action instruction in response to the vehicle gear position being in the P gear or being switched to the P gear from a gear other than the P gear; In response to the vehicle gear position being switched from the P position to a gear position other than the P position, a parking caliper release operation command is generated.

7. The parking control method according to claim 5, characterized in that: The vehicle control module and the parking control module are in different network segments, and the two are connected for data transmission via a gateway.

8. A parking control device, characterized in that: include: Integrated braking module for collecting vehicle status signals and braking intention signals; The parking control module receives a vehicle status signal and a braking intention signal collected by an integrated braking module in response to the disconnection between the vehicle control module and the parking control module. The integrated braking module and the parking control module are located in the same network segment, and controls the clamping or release of the parking caliper according to the vehicle status signal and the braking intention signal to achieve vehicle parking or parking release.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the parking control method according to any one of claims 1 to 7 are implemented.

10. A vehicle, characterized in that: The vehicle comprises: a memory having computer program instructions stored therein; One or more processors, configured to execute computer program instructions in the memory to implement the steps of the parking control method according to any one of claims 1 to 7.

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