Electronic brake force control method, system, computer device and medium

Abstract

The application discloses an electronic brake force control method and system, computer equipment and medium. When the set vehicle in the ACC function starting state appears the EPB system in the locking state, but the accelerator pedal is stepped down, the first delay forwarding period is obtained, the ACC function is suspended, and the corresponding vehicle assistance request is continuously forwarded to the EPB system in the first delay forwarding period, so that the brake actuator of the set vehicle is continuously released. The application prevents the set vehicle from being repeatedly locked due to the ACC function being activated when the accelerator pedal is stepped down, i.e., the set vehicle needs to start, and improves the safety of the vehicle during driving.

Description

Technical Field

[0001] This invention relates to the field of electronic control technology for vehicle chassis, and more particularly to an electronic power-assisted braking control method, system, computer equipment, and medium. Background Technology

[0002] ACC (Adaptive Cruise Control) is a new generation of automotive driver assistance system developed based on traditional cruise control. It can reduce vehicle speed or even brake automatically as needed under specific driving conditions. When the vehicle's ACC function is activated and the system determines that braking is required, the ACC system needs to work with the brake actuator in the vehicle's EPB (Electrical Park Brake) electronic parking system to bring the vehicle to a stop. However, in the current common ACC-EPB takeover strategy, when the ACC system controls the brake actuator to lock and apply the brakes, the ACC system will no longer check whether the vehicle meets the starting conditions. Therefore, when the brake actuator is locked but the accelerator pedal is pressed at the same time, the vehicle will experience a dragging sensation due to the repeated clamping of the brake actuator, which affects the driver's perception. Therefore, how to achieve an electronic power-assisted braking control method that allows the vehicle to move forward normally through the accelerator pedal when the ACC system controls the brake actuator to lock has become an urgent problem to be solved. Summary of the Invention

[0003] Based on this, it is necessary to propose an electronic power-assisted braking control method, system, computer equipment, and medium that allows the vehicle to move forward normally via the accelerator pedal even when the ACC system controls the brake actuator to lock.

[0004] This invention provides an electronic power-assisted braking control method for controlling a designated vehicle entering ACC mode to brake, comprising: S1. When the EPB system of the designated vehicle is locked and the accelerator pedal is pressed, the designated vehicle sends a vehicle assistance request to the host computer that controls the internal ACC system. S2. After the host computer receives the vehicle assistance request, it pauses the ACC function and sends the vehicle assistance request to the ACC system with a delay. S3. When the ACC system starts at the beginning of the first delayed forwarding period and the set state of the set vehicle meets the set conditions, it continuously forwards the vehicle assist request to the EPB system, thereby continuously releasing the brake actuator of the set vehicle. S4. After the first delayed forwarding period ends, reactivate the ACC function and stop forwarding the vehicle assistance request.

[0005] Furthermore, step S4 specifically includes: S4a, when the first delayed forwarding period ends, the first delayed forwarding period is cleared to zero; S4b, after stopping the forwarding of the vehicle assistance request and reactivating the ACC function, return to step S1.

[0006] Furthermore, step S2 specifically includes: S2a, when the host computer obtains the vehicle assistance request, it suspends the ACC function and obtains the set second delayed forwarding period; S2b, during the second delayed forwarding period, the vehicle assistance request is continuously sent to the ACC system.

[0007] Furthermore, after step S2b, the method further includes: S2c, when the second delayed forwarding period ends, the transmission of the vehicle assistance request is paused.

[0008] Furthermore, step S3 specifically includes: S3a, obtain the pressure release status of the EPB system and clear the first delayed forwarding period; S3b, when the ACC system obtains the vehicle assistance request, it determines that the first delayed forwarding period starts timing and continuously forwards the vehicle assistance request to the EPB system; S3c, after the first delayed forwarding period ends, determine whether the set vehicle meets the starting conditions based on the pressure release state; If S3d is satisfied, the brake actuator is controlled to release the brake pressure, thereby allowing the set vehicle to start normally.

[0009] Furthermore, step S3c specifically includes: S3e, after the first delayed forwarding period ends, obtain the current output torque of the set vehicle; S3f, when the pressure release state is in the release state and the current output torque exceeds the set threshold, it is determined that the set vehicle meets the starting conditions, and the vehicle assistance request is continuously forwarded to the EPB system.

[0010] Furthermore, after step S3e, the method further includes: S3g, when the pressure release state is not released, the first delayed forwarding period is cleared to zero, and the forwarding of the vehicle assistance request is stopped.

[0011] The present invention also provides an electronic power-assisted braking control system for controlling a designated vehicle entering ACC mode to brake, comprising: The signal sending unit is used to determine that when the EPB system of the designated vehicle is in a locked state and the accelerator pedal is pressed, the designated vehicle sends a vehicle assistance request to the host computer that controls the internal ACC system. The delayed transmission unit is used to pause the ACC function and send the vehicle assistance request to the ACC system after the host computer obtains the vehicle assistance request; The forwarding unit is used to continuously forward the vehicle assist request to the EPB system when the ACC system starts at the beginning of the first delayed forwarding period and the set state of the set vehicle meets the set conditions, thereby continuously releasing the brake actuator of the set vehicle. An execution unit is configured to reactivate the ACC function and stop forwarding the vehicle assistance request after the first delayed forwarding period ends.

[0012] A computer device includes a memory and a processor, the memory storing a computer program that, when executed by the processor, causes the processor to perform the following steps: S1. When the EPB system of the designated vehicle is locked and the accelerator pedal is pressed, the designated vehicle sends a vehicle assistance request to the host computer that controls the internal ACC system. S2. After the host computer receives the vehicle assistance request, it pauses the ACC function and sends the vehicle assistance request to the ACC system with a delay. S3. When the ACC system starts at the beginning of the first delayed forwarding period and the set state of the set vehicle meets the set conditions, it continuously forwards the vehicle assist request to the EPB system, thereby continuously releasing the brake actuator of the set vehicle. S4. After the first delayed forwarding period ends, reactivate the ACC function and stop forwarding the vehicle assistance request.

[0013] A computer-readable medium storing a computer program, which, when executed by a processor, causes the processor to perform the following steps: S1. When the EPB system of the designated vehicle is locked and the accelerator pedal is pressed, the designated vehicle sends a vehicle assistance request to the host computer that controls the internal ACC system. S2. After the host computer receives the vehicle assistance request, it pauses the ACC function and sends the vehicle assistance request to the ACC system with a delay. S3. When the ACC system starts at the beginning of the first delayed forwarding period and the set state of the set vehicle meets the set conditions, it continuously forwards the vehicle assist request to the EPB system, thereby continuously releasing the brake actuator of the set vehicle. S4. After the first delayed forwarding period ends, reactivate the ACC function and stop forwarding the vehicle assistance request.

[0014] The aforementioned electronic power-assisted braking control method, system, computer equipment, and medium, when a vehicle in the ACC function is activated experiences an EPB system that is locked but the accelerator pedal is depressed, acquires the first delayed forwarding period, suspends the ACC function, and continuously forwards the corresponding vehicle power-assist request to the EPB system during the first delayed forwarding period, thereby continuously releasing the brake actuator of the vehicle. This prevents the vehicle from repeatedly locking the brake actuator when the accelerator pedal is depressed, i.e., when the vehicle needs to start, due to the ACC function still being active, causing the vehicle to jerk and unable to start smoothly, thus improving the safety of the vehicle while driving. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a flowchart of an electronic power-assisted braking control method in one embodiment; Figure 2 This is a flowchart of an electronic power-assisted braking control method in one embodiment; Figure 3 This is a flowchart of an electronic power-assisted braking control method in one embodiment; Figure 4 This is a flowchart of an electronic power-assisted braking control method in one embodiment; Figure 5 This is a flowchart of an electronic power-assisted braking control method in one embodiment; Figure 6 This is a schematic diagram of the electronic power-assisted braking control system in one embodiment; Figure 7 This is a structural block diagram of a computer device in one embodiment. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] refer to Figure 1 This invention provides an electronic power-assisted braking control method for controlling a designated vehicle entering ACC mode to brake, comprising: S1. When the EPB system of the designated vehicle is locked and the accelerator pedal is pressed, the designated vehicle sends a vehicle assistance request to the host computer that controls the internal ACC system. As described in step S1 above, when the vehicle is in ACC mode (Adaptive Cruise Control) mode but needs to stop due to road conditions, the driver presses the brake pedal. At this time, the EPB (Electrical Park Brake) system of the vehicle switches to the locked state to prevent the vehicle from rolling. If the driver judges that the current road conditions require a quick departure and presses the accelerator pedal, the vehicle sends a corresponding vehicle assistance request to the host computer that controls the ACC system in the vehicle. It is understood that the host computer is actually the vehicle system or back-end system that controls the ACC system and the EPB system. The vehicle system and the back-end system can be independent servers or cloud servers that provide basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, content delivery networks (CDN), and big data and artificial intelligence platforms. This invention does not limit the scope of these services.

[0019] S2. When the host computer obtains the vehicle assistance request, it pauses the ACC function and sends the vehicle assistance request to the ACC system with a delay. As described in step S2 above, when the host computer controlling the ACC system and the EPB system obtains the vehicle assistance request sent by the designated vehicle, it pauses the corresponding ACC function and sends the vehicle assistance request to the ACC system with a delay, so that the ACC system can recognize that the accelerator pedal is currently pressed. Understandably, the purpose of the delayed transmission is to ensure that the ACC function is in a suspended state when the ACC system receives the vehicle assistance request. This prevents the brake actuator from needing to release itself after receiving the vehicle assistance request, while the ACC function remains active and by default needs to lock the brake actuator. If the ACC function is still active when the brake actuator receives the vehicle assistance request, the ACC function will repeatedly clamp the brake actuator due to its own functional logic, causing the brake actuator to exhibit multiple clamping cycles of locking-releasing-locking-releasing, resulting in the vehicle jerking.

[0020] S3. When the ACC system starts at the beginning of the first delayed forwarding period and the set state of the set vehicle meets the set conditions, it continuously forwards the vehicle assist request to the EPB system, thereby continuously releasing the brake actuator of the set vehicle. As described in step S3 above, the ACC system obtains the set first delayed forwarding period and determines whether the set vehicle meets the set starting conditions. It is understood that the specific setting of the starting conditions can be set by the user. The purpose is to determine that the set vehicle can start when it meets the set conditions. At this time, the ACC system continuously forwards the vehicle assistance request to the EPB system at the beginning of the first delayed forwarding period. It is understood that when the EPB system obtains the vehicle assistance request, it can release the brake actuator. However, since the ACC system is currently in an active state, it needs to lock the brake actuator by default. At this time, the brake actuator will exhibit multiple clamping cycles of locking-releasing-locking-releasing, causing the set vehicle to jerk. Therefore, the ACC system continuously forwards the vehicle assistance request to the EPB system at the beginning of the first delayed forwarding period and pauses the ACC function to prevent the brake actuator from clamping multiple times.

[0021] S4. After the first delayed forwarding period ends, reactivate the ACC function and stop forwarding the vehicle assistance request.

[0022] As described in step S4 above, after the first delayed forwarding period ends, since the designated vehicle has already started successfully due to the brake actuator being in the released state, the EPB system reactivates the ACC function and stops forwarding the vehicle assist request. At this time, the ACC system takes over the driving of the designated vehicle again, achieving the effect of restoring the designated vehicle to normal start-up and driving of the ACC function.

[0023] This embodiment, through the above method, prevents the vehicle from jerking and failing to start smoothly when the ACC function is still active and the EPB system is locked while the accelerator pedal is depressed in a situation where the ACC function is activated and the set first delay forwarding period is obtained. After pausing the ACC function, the corresponding vehicle assist request is continuously forwarded to the EPB system during the first delay forwarding period, thereby continuously releasing the brake actuator of the set vehicle. This improves the safety of vehicle driving.

[0024] refer to Figure 2 In one embodiment, step S4 specifically includes: S4a, when the first delayed forwarding period ends, the first delayed forwarding period is cleared to zero; S4b, after stopping the forwarding of the vehicle assistance request and reactivating the ACC function, return to step S1.

[0025] As described in the above embodiments, after the first delayed forwarding period ends, the EPB system clears the first delayed forwarding period to zero, thereby enabling the secondary use of the first delayed forwarding period in subsequent steps. Afterwards, the EPB system stops forwarding the vehicle assistance request and reactivates the ACC function. After completing the above steps, it returns to step S1 to achieve continuous judgment on whether the vehicle assistance request is forwarded.

[0026] refer to Figure 3 In one embodiment, step S2 specifically includes: S2a, when the host computer obtains the vehicle assistance request, it suspends the ACC function and obtains the set second delayed forwarding period; S2b, during the second delayed forwarding period, the vehicle assistance request is continuously sent to the ACC system.

[0027] As described in the above embodiments, when the host computer receives the vehicle assistance request, it pauses the ACC function of the ACC system and obtains the set second delay forwarding period. Then, while the second delay forwarding period continues, the ACC system continuously sends the vehicle assistance request to the ACC system. It can be understood that at this time, the host computer can control the sending of the vehicle assistance request through both the first delay forwarding period and the second delay forwarding period, thereby controlling the clamping and releasing of the brake actuator.

[0028] In one embodiment, after step S2b, the method further includes: S2c, when the second delayed forwarding period ends, the transmission of the vehicle assistance request is paused.

[0029] As described in the above embodiments, when the second delayed forwarding period ends, the ACC system suspends the transmission of the vehicle assistance request, thereby controlling the transmission of the vehicle assistance request through the first delayed forwarding period and the second delayed forwarding period, thereby achieving the effect of controlling the clamping and releasing of the brake actuator.

[0030] refer to Figure 4 In one embodiment, step S3 specifically includes: S3a, obtain the pressure release status of the EPB system and clear the first delayed forwarding period; S3b, when the ACC system obtains the vehicle assistance request, it determines that the first delayed forwarding period starts timing and continuously forwards the vehicle assistance request to the EPB system; S3c, after the first delayed forwarding period ends, determine whether the set vehicle meets the starting conditions based on the pressure release state; If S3d is satisfied, the brake actuator is controlled to release the brake pressure, thereby allowing the set vehicle to start normally.

[0031] As described in the above embodiments, the ACC system obtains the pressure release status of the EPB system and clears the first delayed forwarding period to zero. Then, when the ACC system obtains the vehicle assistance request, it determines that the first delayed forwarding period has started timing and begins to continuously forward the vehicle assistance request to the EPB system. After the first delayed forwarding period ends, the EPB system determines whether the set vehicle meets the starting conditions based on the pressure release status. It can be understood that the specific requirements of the starting conditions can be set by the user. When the set vehicle meets the starting conditions, the EPB system controls the brake actuator to release the brake pressure, thereby enabling the set vehicle to start normally.

[0032] refer to Figure 5 In one embodiment, step S3c specifically includes: S3e, after the first delayed forwarding period ends, obtain the current output torque of the set vehicle; S3f, when the pressure release state is in the release state and the current output torque exceeds the set threshold, it is determined that the set vehicle meets the starting conditions, and the vehicle assistance request is continuously forwarded to the EPB system.

[0033] As described in the above embodiments, when the host computer determines through the EPB system that the first delayed forwarding period has ended, it obtains the current output torque of the designated vehicle. When the pressure release state corresponding to the designated vehicle is in the release state and the current output torque exceeds the set threshold, it determines that the designated vehicle meets the starting conditions and continuously forwards the vehicle assistance request to the EPB system.

[0034] In one embodiment, after step S3e, the method further includes: S3g, when the pressure release state is not released, the first delayed forwarding period is cleared to zero, and the forwarding of the vehicle assistance request is stopped.

[0035] As described in the above embodiments, when the host computer finds that the pressure release state is still not released after the first delayed forwarding period ends, it determines that the current set vehicle does not meet the starting conditions, and stops forwarding the vehicle assistance request after the first delayed forwarding period is cleared.

[0036] refer to Figure 6 The present invention also provides an electronic power-assisted braking control system for controlling a designated vehicle entering ACC mode to brake, comprising: The signal sending unit 10 is used to determine that when the EPB system of the set vehicle is in a locked state and the accelerator pedal is pressed, the set vehicle sends a vehicle assistance request to the host computer that controls the internal ACC system. The delayed transmission unit 20 is used to pause the ACC function and send the vehicle assistance request to the ACC system with a delay after the host computer obtains the vehicle assistance request. The forwarding unit 30 is used to continuously forward the vehicle assist request to the EPB system when the ACC system starts at the beginning of the set first delayed forwarding period and the set state of the set vehicle meets the set conditions, thereby continuously releasing the brake actuator of the set vehicle. The execution unit 40 is used to reactivate the ACC function and stop forwarding the vehicle assistance request after the first delayed forwarding period ends.

[0037] The above-mentioned units are responsible for implementing the electronic power-assisted braking control system, and will not be described in detail here.

[0038] Figure 7 An internal structural diagram of a computer device in one embodiment is shown. This computer device may specifically be a server, including but not limited to high-performance computers and high-performance computer clusters. Figure 7As shown, the computer device includes a processor, memory, and network interface connected via a system bus. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and may also store a computer program. When executed by the processor, this computer program enables the processor to implement the electronic power-assisted braking control method. The internal memory may also store a computer program, which, when executed by the processor, enables the processor to execute the electronic power-assisted braking control method.

[0039] In one embodiment, the electronic power-assisted braking control method provided by the present invention can be implemented as a computer program, and the computer program can be implemented as follows: Figure 3 The computer device shown runs on this system. The computer device's memory can store the various program templates that make up the electronic power-assisted braking control system. For example: 10 – signal transmission unit, 20 – delay transmission unit, 30 – forwarding unit, 40 – execution unit.

[0040] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, performs the following steps: S1. When the EPB system of the designated vehicle is locked and the accelerator pedal is pressed, the designated vehicle sends a vehicle assistance request to the host computer that controls the internal ACC system. S2. After the host computer receives the vehicle assistance request, it pauses the ACC function and sends the vehicle assistance request to the ACC system with a delay. S3. When the ACC system starts at the beginning of the first delayed forwarding period and the set state of the set vehicle meets the set conditions, it continuously forwards the vehicle assist request to the EPB system, thereby continuously releasing the brake actuator of the set vehicle. S4. After the first delayed forwarding period ends, reactivate the ACC function and stop forwarding the vehicle assistance request.

[0041] As can be seen from the above embodiments, the greatest beneficial effect of the present invention is that when the set vehicle in the ACC function is activated and the EPB system is locked but the accelerator pedal is pressed, the first delayed forwarding period is obtained, the ACC function is paused, and the corresponding vehicle assist request is continuously forwarded to the EPB system during the first delayed forwarding period, thereby continuously releasing the brake actuator of the set vehicle. This prevents the set vehicle from repeatedly locking the brake actuator when the accelerator pedal is pressed, i.e., when the set vehicle needs to start, because the ACC function is still active, causing the set vehicle to jerk and unable to start smoothly, thus improving the safety of vehicle driving.

[0042] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An electronic power-assisted braking control method for controlling a designated vehicle entering ACC mode to brake, characterized in that, include: S1. When the EPB system of the designated vehicle is locked and the accelerator pedal is pressed, the designated vehicle sends a vehicle assistance request to the host computer that controls the internal ACC system. S2. When the host computer obtains the vehicle assistance request, it pauses the ACC function and sends the vehicle assistance request to the ACC system with a delay. S3. When the ACC system starts at the beginning of the first delayed forwarding period and the set state of the set vehicle meets the set conditions, it continuously forwards the vehicle assist request to the EPB system, thereby continuously releasing the brake actuator of the set vehicle. S4. After the first delayed forwarding period ends, reactivate the ACC function and stop forwarding the vehicle assistance request.

2. The electronic power-assisted braking control method as described in claim 1, characterized in that, Step S4 specifically includes: S4a, when the first delayed forwarding period ends, the first delayed forwarding period is cleared to zero; S4b, after stopping the forwarding of the vehicle assistance request and reactivating the ACC function, return to step S1.

3. The electronic power-assisted braking control method as described in claim 1, characterized in that, Step S2 specifically includes: S2a, when the host computer obtains the vehicle assistance request, it suspends the ACC function and obtains the set second delayed forwarding period; S2b, during the second delayed forwarding period, the vehicle assistance request is continuously sent to the ACC system.

4. The electronic power-assisted braking control method as described in claim 3, characterized in that, Following step S2b, the method further includes: S2c, when the second delayed forwarding period ends, the transmission of the vehicle assistance request is paused.

5. The electronic power-assisted braking control method as described in claim 1, characterized in that, Step S3 specifically includes: S3a, obtain the pressure release status of the EPB system and clear the first delayed forwarding period; S3b, when the ACC system obtains the vehicle assistance request, it determines that the first delayed forwarding period starts timing and continuously forwards the vehicle assistance request to the EPB system; S3c, after the first delayed forwarding period ends, determine whether the set vehicle meets the starting conditions based on the pressure release state; If S3d is satisfied, the brake actuator is controlled to release the brake pressure, thereby allowing the set vehicle to start normally.

6. The electronic power-assisted braking control method as described in claim 5, characterized in that, Step S3c specifically includes: S3e, after the first delayed forwarding period ends, obtain the current output torque of the set vehicle; S3f, when the pressure release state is in the release state and the current output torque exceeds the set threshold, it is determined that the set vehicle meets the starting conditions, and the vehicle assistance request is continuously forwarded to the EPB system.

7. The electronic power-assisted braking control method as described in claim 6, characterized in that, Following step S3e, the method further includes: S3g, when the pressure release state is not released, the first delayed forwarding period is cleared to zero, and the forwarding of the vehicle assistance request is stopped.

8. An electronic power-assisted braking control system for controlling a designated vehicle entering ACC mode to brake, characterized in that, include: The signal sending unit is used to determine that when the EPB system of the designated vehicle is in a locked state and the accelerator pedal is pressed, the designated vehicle sends a vehicle assistance request to the host computer that controls the internal ACC system. The delayed transmission unit is used to pause the ACC function and send the vehicle assistance request to the ACC system after the host computer obtains the vehicle assistance request; The forwarding unit is used to continuously forward the vehicle assist request to the EPB system when the ACC system starts at the beginning of the first delayed forwarding period and the set state of the set vehicle meets the set conditions, thereby continuously releasing the brake actuator of the set vehicle. An execution unit is configured to reactivate the ACC function and stop forwarding the vehicle assistance request after the first delayed forwarding period ends.

9. A computer device, characterized in that, The system includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the electronic power-assisted braking control method as described in any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the electronic power-assisted braking control method as described in any one of claims 1 to 7.

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