Control method for preventing accelerator from being stepped on mistakenly

Abstract

The invention relates to a control method for an accelerator mistaken stepping prevention function, and the method comprises the steps: under the condition that the accelerator mistaken stepping prevention function of a vehicle is started, obtaining the vehicle speed, the accelerator opening degree, the accelerator opening degree change rate, the type of a collision target closest to the vehicle track, the distance collision time, the gear and the parking braking state in real time; when the vehicle speed is 0, based on the accelerator opening degree, the accelerator opening degree change rate, the distance collision time and the collision target type, a first target accelerator mistaken stepping prevention function control strategy is determined and executed; a first target accelerator mistaken stepping prevention function control strategy is adjusted according to the accelerator opening degree and the gear; when the vehicle speed meets the preset low-speed condition, based on the accelerator opening degree, the accelerator opening degree change rate and the distance collision time, a second target accelerator mistaken stepping prevention function control strategy is determined and executed; a second target accelerator mistaken stepping prevention function control strategy is adjusted according to the accelerator opening degree and the gear; and when the vehicle speed meets the preset high-speed condition, based on the distance collision time, a third target accelerator mistaken stepping prevention function control strategy is executed.

Description

Technical Field

[0001] The present application relates to the field of vehicle safety control technology, and in particular to a control method for an accelerator anti-misstepping function. Background Art

[0002] At present, new energy vehicles use electric motors to output torque, have a faster acceleration response at low speeds, and provide a more superior driving experience than traditional internal combustion engine vehicles, especially when parked. Due to the fast start-up and acceleration response of the vehicle, accidentally stepping on the accelerator is more likely to lead to serious consequences.

[0003] Most car manufacturers have achieved a certain degree of throttle accidental step prevention by combining sensing devices such as radars and cameras with the AEB (Autonomous Emergency Braking) function. However, there is currently no clear exit mechanism for the throttle accidental step prevention function. If the multi-level control mode of the throttle accidental step prevention function is not considered when the AEB activation conditions are met, it is easy to cause the throttle accidental step prevention function to be triggered by mistake, causing the driver to be unable to drive the vehicle or interfering with the driver's normal operation. Summary of the invention

[0004] Based on this, it is necessary to provide a control method for the throttle anti-misstepping function to solve the above technical problems, and the method includes:

[0005] When the vehicle's throttle misstepping prevention function is turned on, obtain the vehicle speed, throttle opening, throttle opening change rate, the type of the nearest collision target on the vehicle trajectory, the time to collision, the gear position and the parking brake status in real time;

[0006] When the vehicle speed is 0, determining and executing a first target throttle mis-stepping prevention function control strategy based on the throttle opening, the throttle opening change rate, the distance-to-collision time, and the collision target type;

[0007] adjusting the first target throttle anti-misoperation function control strategy according to the throttle opening and the gear position;

[0008] When the vehicle speed meets the preset low-speed condition, based on the throttle opening, the throttle opening change rate and the distance-to-collision time, a second target throttle mis-stepping prevention function control strategy is determined and executed;

[0009] adjusting the second target throttle anti-misoperation function control strategy according to the throttle opening and the gear position;

[0010] When the vehicle speed meets the preset high speed condition, a third target accelerator mis-stepping prevention function control strategy is executed based on the distance-to-collision time.

[0011] As an optional implementation, when the vehicle speed is 0, based on the throttle opening, the throttle opening change rate, the distance-to-collision time and the collision target type, determining and executing a first target throttle mis-stepping prevention function control strategy includes:

[0012] When the vehicle speed is 0, if it is detected that the throttle opening increases from a preset first throttle opening threshold to a preset second throttle opening threshold, and the throttle opening change rate increases from a preset first change rate threshold to a preset second change rate threshold, and the distance-to-collision time is less than a preset first time threshold, then according to the collision target type, a target collision alarm level corresponding to the collision target type is determined;

[0013] According to the collision warning level, a collision warning message and a prompt to exit the accelerator mis-stepping prevention function are sent to the driver, and the driving torque output is limited.

[0014] As an optional implementation manner, determining the target collision alarm level corresponding to the collision target type according to the collision target type includes:

[0015] If the collision target type is a static target, a preset first-level collision alarm level is determined as the target collision alarm level;

[0016] If the collision target type is a dynamic target, the preset secondary collision warning level is determined as the target collision warning level.

[0017] As an optional implementation manner, the control strategy for adjusting the first target throttle anti-misoperation function according to the throttle opening and the gear position includes:

[0018] When it is detected that the throttle opening increases, the target collision warning level is increased, and a collision warning message is sent to the driver;

[0019] When it is detected that the throttle opening is reduced to a preset third throttle opening threshold; or,

[0020] detecting that the gear is switched to the parking gear; or,

[0021] When it is detected that the parking brake state is activated, the accelerator mis-stepping prevention function is exited.

[0022] As an optional implementation, when the vehicle speed meets the preset low-speed condition, based on the throttle opening, the throttle opening change rate and the distance-to-collision time, determining and executing a second target throttle mis-stepping prevention function control strategy includes:

[0023] When the vehicle speed meets the low-speed condition, if it is detected that the throttle opening increases from a preset first throttle opening threshold to a preset second throttle opening threshold, and the throttle opening change rate increases from a preset first change rate threshold to a preset second change rate threshold, and the distance-to-collision time is less than a preset second time threshold, a collision warning message and a prompt to exit the throttle anti-misstep function are sent to the driver according to the preset first-level collision warning level, and the drive torque output is limited.

[0024] As an optional implementation manner, the control strategy for adjusting the second target throttle anti-misoperation function according to the throttle opening and the gear position includes:

[0025] When the throttle opening is detected to be increased, a collision warning message and a prompt to exit the throttle accidental stepping prevention function are sent to the driver according to a preset secondary collision warning level;

[0026] adjusting brake pressure according to the distance-to-collision time;

[0027] When it is detected that the throttle opening is reduced to a preset third throttle opening threshold, the driving torque output is restored;

[0028] When it is detected that the gear is switched to the parking gear; or,

[0029] When it is detected that the parking brake state is activated, the accelerator mis-stepping prevention function is exited.

[0030] As an optional implementation, the method further includes:

[0031] When the vehicle speed is greater than 0 and less than or equal to a preset vehicle speed threshold, it is determined that the vehicle speed meets the low speed condition.

[0032] As an optional implementation, when the vehicle speed meets the preset high speed condition, based on the distance-to-collision time, executing a third target throttle mis-stepping prevention function control strategy includes:

[0033] When the vehicle speed meets the high-speed condition, if it is detected that the distance-to-collision time is less than a preset third time threshold, automatic emergency braking is triggered and an automatic emergency braking alarm message is sent to the driver.

[0034] As an optional implementation, the method further includes:

[0035] When the vehicle speed is greater than a preset vehicle speed threshold, it is determined that the vehicle speed meets the high speed condition.

[0036] As an optional implementation, the method further includes:

[0037] When the vehicle's throttle anti-misstep function is turned on and the gear is one of the forward gear, sports gear or reverse gear, if the steering wheel angle is detected to be greater than or equal to a preset angle threshold, the throttle anti-misstep function is exited.

[0038] The present application provides a control method for an accelerator anti-misstepping function. The technical solution provided by the embodiments of the present application brings at least the following beneficial effects: when the accelerator anti-misstepping function of the vehicle is turned on, the vehicle speed, throttle opening, throttle opening change rate, the type of the nearest collision target on the vehicle trajectory, the distance collision time, the gear position and the parking brake state are obtained in real time; when the vehicle speed is 0, based on the throttle opening, the throttle opening change rate, the distance collision time and the collision target type, a first target throttle anti-misstepping function control strategy is determined and executed; the first target throttle anti-misstepping function control strategy is adjusted according to the throttle opening and the gear position; when the vehicle speed meets the preset low-speed condition, based on the throttle opening, the throttle opening change rate and the distance collision time, a second target throttle anti-misstepping function control strategy is determined and executed; the second target throttle anti-misstepping function control strategy is adjusted according to the throttle opening and the gear position; when the vehicle speed meets the preset high-speed condition, based on the distance collision time, a third target throttle anti-misstepping function control strategy is executed. This application can set the corresponding throttle anti-misstep function control strategy according to the vehicle speed, collision target type and driver operation conditions, so that the throttle anti-misstep function is more in line with the actual driving scenario, and the vehicle can display the operation method of exiting the throttle anti-misstep function to the driver, guide the driver's operation, so that the driver can get effective response in time, and reduce the impact of the throttle anti-misstep function on normal driving needs when it is activated.

[0039] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A flow chart of a method for controlling a throttle anti-misstepping function provided in an embodiment of the present application;

[0042] Figure 2 A flow chart of a throttle anti-misoperation function control strategy provided in an embodiment of the present application;

[0043] Figure 3 A flowchart of a method for determining a collision warning level provided in an embodiment of the present application;

[0044] Figure 4 A flowchart of a method for adjusting a throttle anti-misoperation function control strategy provided in an embodiment of the present application;

[0045] Figure 5 A flowchart of another method for adjusting the throttle anti-misoperation function control strategy provided in an embodiment of the present application;

[0046] Figure 6 A flowchart of an example of a method for controlling the throttle anti-misstepping function provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0048] The following will describe in detail a method for controlling the throttle anti-misoperation function provided in an embodiment of the present application in conjunction with a specific implementation method. Figure 1 A flow chart of a control method for an accelerator anti-misoperation function provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the specific steps are as follows:

[0049] Step 101, when the throttle error prevention function of the vehicle is turned on, the vehicle speed, throttle opening, throttle opening change rate, the type of the nearest collision target on the vehicle trajectory, the time to collision, the gear position and the parking brake status are obtained in real time.

[0050] In practice, the vehicle system can fully understand the current operating status of the vehicle by acquiring multiple parameters of the vehicle in real time. By analyzing the distance and time between the vehicle trajectory and the collision target, combined with the gear position and parking status, it can provide comprehensive data support for the risk assessment of accidentally stepping on the accelerator. For example, when an autonomous vehicle is driving, the real-time collected throttle opening is 30%, the throttle opening change rate is 5% / s, the nearest collision target on the vehicle trajectory is a pedestrian, the distance to the collision time is 1.5 seconds, the current gear is D gear, and the parking brake is not activated. The system comprehensively analyzes these data and proceeds to the next step of decision-making.

[0051] Step 102 : when the vehicle speed is 0, based on the throttle opening, the throttle opening change rate, the distance to collision time and the collision target type, determine and execute the first target throttle mis-stepping prevention function control strategy.

[0052] In practice, when the vehicle is stationary (vehicle speed is 0), the driver's mistaken stepping on the accelerator may cause the vehicle to suddenly start and hit an obstacle or pedestrian. Based on parameters such as the throttle opening and its rate of change, combined with the distance to collision time and target type, a control strategy suitable for the stationary state can be determined to reduce the possibility of danger. For example: when the vehicle speed is 0, the system detects that the throttle opening increases rapidly to 40%, with a rate of change of 10% / s, and there is only 1 second of collision time left with the pedestrian in front. The system triggers the first target throttle anti-misstep function control strategy, such as: forcibly limiting the engine output power to keep the vehicle in place.

[0053] As an optional implementation, Figure 2 A flowchart of a throttle anti-misoperation function control strategy provided in an embodiment of the present application, such as Figure 2 As shown, in step 102, when the vehicle speed is 0, the specific steps of determining and executing the first target throttle mis-stepping prevention function control strategy based on the throttle opening, the throttle opening change rate, the distance collision time and the collision target type are as follows:

[0054] Step 201, when the vehicle speed is 0, if it is detected that the throttle opening increases from a preset first throttle opening threshold to a preset second throttle opening threshold, and the throttle opening change rate increases from a preset first change rate threshold to a preset second change rate threshold, and the distance-to-collision time is less than the preset first time threshold, then according to the collision target type, determine the target collision alarm level corresponding to the collision target type.

[0055] In practice, when the vehicle speed is 0, the driver's mistaken stepping on the accelerator may cause the vehicle to start suddenly and cause a collision. By detecting the throttle opening and the rate of change of the opening, combined with the type of collision target and the distance to the target, the potential risk can be accurately judged. Based on the danger level of different target types (such as pedestrians, vehicles, etc.), determining the appropriate alarm level helps to warn in advance and take measures. For example: When the vehicle is stationary, the system detects the following situations: the throttle opening increases rapidly from 10% (the first throttle opening threshold) to 40% (the second throttle opening threshold), the throttle opening change rate increases from 5% / s (the first change rate threshold) to 20% / s (the second change rate threshold), the distance to collision time is 1 second, which is less than the preset 2-second threshold, and the collision target type is a pedestrian. The system judges it as a high-risk situation and sets the target collision alarm level to "high", ready to issue a warning and limit the vehicle's power output.

[0056] As an optional implementation, Figure 3 A flowchart of a method for determining a collision warning level provided in an embodiment of the present application is shown in FIG. Figure 3 As shown, in step 201, according to the collision target type, determining the target collision alarm level corresponding to the collision target type includes:

[0057] Step 301: If the collision target type is a static target, the preset first-level collision alarm level is determined as the target collision alarm level.

[0058] In practice, static targets (such as roadblocks, parked vehicles or buildings) do not move and their risk level is relatively low. By setting them to the first level of collision warning, excessive intervention can be avoided, but the driver can still be reminded to pay attention and take measures to ensure safety.

[0059] Step 302: If the collision target type is a dynamic target, the preset secondary collision warning level is determined as the target collision warning level.

[0060] In practice, dynamic targets (such as pedestrians, cyclists or other vehicles) are mobile and unpredictable in direction, and are more risky. Setting them to the secondary collision warning level can provide stronger reminders or restrictions to reduce the possibility of accidents. For example: the system detects that a pedestrian is crossing the road ahead, the time to collision is 1 second, and the collision target type is a dynamic target. The system sets the secondary collision warning level to the target collision warning level according to the preset rules.

[0061] Step 202 : sending a collision warning message and a prompt to exit the accelerator mis-stepping prevention function to the driver according to the collision warning level, and limiting the driving torque output.

[0062] In implementation, the system can send out sound and light or screen alarm information to the driver in time according to the collision alarm level, reminding him to pay attention and giving the exit prompt of the throttle anti-misoperation function. At the same time, the driving torque output is limited to prevent the vehicle from starting suddenly due to misoperation of the accelerator, thereby minimizing the risk of collision. The exit prompt of the throttle anti-misoperation function further guarantees the driver's control over the vehicle. For example: when the system determines that the collision alarm level is "high", the system can display the following information to the driver: display the text prompt "Collision alarm level: Pedestrians are approaching, please release the accelerator!" on the instrument panel, and issue a rapid beep, limit the vehicle's driving torque, reduce the engine output power to zero, keep the vehicle stationary, and display the exit prompt of the throttle anti-misoperation function, such as "The throttle anti-misoperation function has been activated, release the accelerator to exit the restriction mode". After the driver releases the accelerator, the system exits the anti-misoperation function and the vehicle resumes normal operation.

[0063] Step 103, adjusting the first target throttle anti-misoperation function control strategy according to the throttle opening and the gear position.

[0064] In practice, different gears and throttle openings will affect the vehicle's power output. By adjusting the control strategy in a stationary state, improper vehicle starts can be more accurately restricted to avoid accidents.

[0065] As an optional implementation, Figure 4 A flowchart of a method for adjusting a throttle anti-misoperation function control strategy provided in an embodiment of the present application, such as Figure 4 As shown, the specific steps of adjusting the first target throttle anti-misoperation function control strategy according to the throttle opening and the gear position in step 103 are as follows:

[0066] Step 401: when it is detected that the throttle opening is increased, the target collision warning level is increased, and a collision warning message is sent to the driver.

[0067] In practice, when the system detects that the accelerator opening is further increased, the driver may have stepped on the accelerator by mistake, and the vehicle's power output may increase the risk of collision. At this time, by raising the target collision alarm level and sending a warning message, the driver can be reminded in time to reduce the probability of an accident.

[0068] Step 402, when it is detected that the throttle opening is reduced to a preset third throttle opening threshold; or,

[0069] Detection of a gear shift to the parking position; or,

[0070] When the parking brake is detected to be activated, the accelerator anti-misoperation function is exited.

[0071] In practice, when it is detected that the throttle opening is reduced to a safety threshold, or the vehicle is switched to the parking gear, or the parking brake is activated, the vehicle is in a stable or no-power output state, indicating that the risk of misoperation has been eliminated. At this time, the throttle misoperation prevention function can be exited to restore the vehicle to normal operation and avoid unnecessary interference to the driver.

[0072] Step 104 : when the vehicle speed meets the preset low speed condition, a second target throttle mis-stepping prevention function control strategy is determined and executed based on the throttle opening, the throttle opening change rate and the distance-to-collision time.

[0073] In practice, when the vehicle is at a low speed, accidentally stepping on the accelerator may lead to faster acceleration and increase the risk of collision. Through real-time analysis of the throttle opening, the rate of change of the opening, and the time to collision, a more flexible low-speed control strategy is determined to minimize the occurrence of danger. For example: when the vehicle is traveling at a low speed of 3km / h, the throttle opening suddenly increases to 50%, the rate of change reaches 20% / s, and the distance to the target in front is shortened to 2 seconds. The system triggers the second target throttle anti-accidental step function control strategy, such as limiting acceleration, keeping the vehicle speed below 5km / h, and warning the driver through sound.

[0074] As an optional implementation, in step 104, when the vehicle speed meets the preset low-speed condition, the specific method of determining and executing the second target throttle mis-stepping prevention function control strategy based on the throttle opening, the throttle opening change rate and the distance-to-collision time is as follows:

[0075] When the vehicle speed meets the low-speed condition, if it is detected that the throttle opening increases from a preset first throttle opening threshold to a preset second throttle opening threshold, and the throttle opening change rate increases from a preset first change rate threshold to a preset second change rate threshold, and the time to collision is less than a preset second time threshold, a collision warning message and a prompt to exit the throttle anti-misstep function are sent to the driver according to the preset first-level collision warning level, and the drive torque output is limited.

[0076] In practice, when the vehicle is in a low-speed driving condition, the driver's mistaken stepping on the accelerator may cause the vehicle to accelerate suddenly and collide with the target in front. By monitoring parameters such as throttle opening, throttle opening change rate and distance to collision time, the degree of danger can be accurately assessed. When the above conditions are met, the system triggers a first-level collision alarm, sends a warning to the driver and limits the drive torque output, thereby avoiding the danger from increasing. In addition, through the exit prompt of the anti-misstep function, the driver can regain active control of the vehicle and reduce the impact of excessive system intervention. For example: when the vehicle is driving at a low speed (the speed is 8km / h), the system detects in real time that the throttle opening increases rapidly from 10% (the first throttle opening threshold) to 40% (the second throttle opening threshold), the throttle opening change rate increases from 5% / s (the first change rate threshold) to 15% / s (the second change rate threshold), and the distance to collision time is 1.5 seconds, which is less than the preset 2 seconds (the second time threshold). The system sends a collision alarm message and an exit prompt of the throttle anti-misstep function to the driver according to the preset first-level collision alarm level, and limits the drive torque output.

[0077] As an optional implementation, when the vehicle speed is greater than 0 and less than or equal to a preset vehicle speed threshold, it is determined that the vehicle speed meets the low speed condition.

[0078] Step 105, adjusting the second target throttle anti-misoperation function control strategy according to the throttle opening and the gear position.

[0079] In implementation, the control strategy is dynamically adjusted by combining the gear position and throttle opening at low speed, which can improve the accuracy and applicability of the anti-misstep function and ensure the stability and safety of vehicle driving.

[0080] As an optional implementation, Figure 5 A flowchart of another method for adjusting the throttle anti-misoperation function control strategy provided in an embodiment of the present application, such as Figure 5 As shown, the specific steps of adjusting the second target throttle anti-misoperation function control strategy according to the throttle opening and the gear position in step 105 are as follows:

[0081] Step 501, when it is detected that the throttle opening is increased, a collision warning message and a prompt to exit the throttle accidental stepping prevention function are sent to the driver according to a preset secondary collision warning level.

[0082] In practice, when the throttle opening increases further, it indicates that the driver has stepped on the accelerator by mistake and there is a potential risk of collision. The system sends a secondary collision warning message and a prompt to exit the throttle anti-misstepping function to promptly warn the driver and provide suggestions for corrective operations to reduce the possibility of accidents.

[0083] Step 502, adjusting the brake pressure according to the time to collision.

[0084] In practice, the braking pressure is adjusted according to the distance to collision time, and the vehicle braking force can be dynamically adjusted when a potential collision risk occurs, thereby ensuring a smooth braking process and effectively reducing the risk of collision. For example: the system detects that the distance to collision time between the vehicle in front and the vehicle is 1.2 seconds, and as the throttle opening increases, the distance to collision time is further shortened to 0.8 seconds. The system can trigger the braking mechanism according to the collision time, gradually increase the braking pressure from the initial 0.2MPa to 0.5MPa, and the vehicle gradually slows down to a safe range.

[0085] Step 503: when it is detected that the throttle opening is reduced to a preset third throttle opening threshold, the driving torque output is restored.

[0086] In practice, when the accelerator opening is reduced to the preset safety threshold, the risk of accidentally pressing the accelerator is eliminated. At this time, the system resumes the drive torque output, allowing the vehicle to return to normal power state, thereby avoiding the continuous impact of system intervention on the driving experience.

[0087] Step 504, when it is detected that the gear is switched to the parking gear; or,

[0088] When the parking brake is detected to be activated, the accelerator anti-misoperation function is exited.

[0089] In practice, when the gear is switched to the parking gear or the parking brake is activated, the vehicle enters a stationary state and the risk of accidentally stepping on the accelerator is completely eliminated. At this time, exiting the anti-accelerator function can avoid ineffective occupation of system resources and restore the vehicle's normal control mode.

[0090] Step 106 : When the vehicle speed meets the preset high speed condition, a third target accelerator mis-stepping prevention function control strategy is executed based on the distance-to-collision time.

[0091] In practice, at high speeds, the risk of collision increases due to accidental accelerator pedaling, and the time to collision is a key parameter. Through a control strategy based on the time to collision, braking or other intervention measures can be taken in time to reduce the probability of a collision. The vehicle is traveling at a speed of 80km / h, and the system detects a target object (another vehicle) in front of it, with a time to collision of 2 seconds. The system triggers the third target accelerator anti-accelerator accidental pedaling function control strategy, such as taking emergency braking as a priority, quickly reducing the vehicle speed to a safe range, and warning the driver to stop the wrong operation.

[0092] As an optional implementation, in step 106, when the vehicle speed meets the preset high speed condition, the specific method of executing the third target throttle mis-stepping prevention function control strategy based on the distance-to-collision time is as follows:

[0093] When the vehicle speed meets the high-speed condition, if it is detected that the time to collision is less than the preset third time threshold, automatic emergency braking is triggered and an automatic emergency braking alarm message is sent to the driver.

[0094] In practice, under high-speed driving conditions, the inertia and reaction time of the vehicle are significantly increased, and the wrong accelerator may lead to a serious collision accident. Through dynamic monitoring based on the distance to collision time, the system can quickly trigger automatic emergency braking when the distance to collision time is less than the safety threshold, thereby effectively reducing the risk of collision or mitigating the impact of the collision. At the same time, sending an automatic emergency braking alarm message can remind the driver that the system has intervened and guide him to perform subsequent operations. For example: the vehicle is driving on the highway at a speed of 80km / h. The system detects that the vehicle in front suddenly decelerates. The distance to collision time is 1 second, which is lower than the preset third time threshold (1.5 seconds). The throttle opening remains unchanged and the driver does not take deceleration measures. The system triggers automatic emergency braking, immediately controls the vehicle braking system, applies a braking force of 0.8MPa, and the vehicle begins to decelerate rapidly. After the automatic emergency braking is adjusted to a safe distance, the braking force is gradually reduced to ensure that the vehicle stops smoothly or resumes a safe driving state. The prompt message is displayed on the dashboard: "Warning: The distance to collision time is too short, and the automatic emergency braking has been activated!", and a continuous high-frequency beep sound is emitted to remind the driver to pay attention to the current dangerous situation. After braking is completed, the dashboard can also display a text prompt "Emergency braking completed, please recheck the road conditions!" The system exits the automatic emergency braking mode and returns the vehicle control to the driver, thus effectively avoiding possible high-speed collision accidents while maintaining driving smoothness and safety as much as possible.

[0095] As an optional implementation, when the vehicle speed is greater than a preset vehicle speed threshold, it is determined that the vehicle speed meets the high-speed condition.

[0096] As an optional implementation, when the vehicle's throttle anti-misstep function is turned on and the gear is one of the forward gear, sports gear or reverse gear, if the steering wheel angle is detected to be greater than or equal to a preset angle threshold, the throttle anti-misstep function is exited.

[0097] In implementation, when the steering wheel angle is greater than or equal to the preset angle threshold, it usually means that the driver is performing a steering operation, such as a U-turn, a turn, or parking. In this case, the vehicle's power demand and the driver's throttle control intention may be clearer. In order to avoid excessive intervention of the throttle anti-misstep function affecting normal operation, the system chooses to exit the anti-misstep function and completely returns the vehicle control to the driver, thereby ensuring smooth driving and flexibility. For example: the vehicle's throttle anti-misstep function is turned on, the gear is D gear (forward gear), the speed is 12km / h, and the steering wheel angle reaches 45 degrees (preset angle threshold). The driver is turning right and gradually increases the throttle to complete the turn. The system monitors the steering wheel angle in real time, and when the angle value reaches the preset threshold (45 degrees), it determines that the driver is performing a steering operation. The system exits the throttle accidental pedal prevention function and restores normal throttle response, and displays a prompt message on the instrument panel: "The accidental pedal prevention function has been exited, the steering wheel angle is large, and normal throttle control is restored." Another example: the vehicle is in R gear (reverse gear), the steering wheel angle reaches 50 degrees, and the driver is reversing into a garage. After the system detection, the accidental pedal prevention function is also exited, allowing the driver to accurately control the vehicle's driving trajectory.

[0098] As an optional implementation, Figure 6 This is a flowchart of an example of a method for controlling the throttle anti-misstepping function provided in an embodiment of the present application, such as Figure 6 As shown, the specific steps are as follows:

[0099] Step 601, when the throttle mis-stepping prevention function of the vehicle is turned on, the vehicle speed, throttle opening, throttle opening change rate, the type of the nearest collision target on the vehicle trajectory, the time to collision, the gear position and the parking brake status are obtained in real time.

[0100] Step 602: When the vehicle speed is 0, if it is detected that the throttle opening increases from a preset first throttle opening threshold to a preset second throttle opening threshold, and the throttle opening change rate increases from a preset first change rate threshold to a preset second change rate threshold, and the distance-to-collision time is less than a preset first time threshold, if the collision target type is a static target, the preset first-level collision alarm level is determined as the target collision alarm level. If the collision target type is a dynamic target, the preset second-level collision alarm level is determined as the target collision alarm level.

[0101] Step 603: Send collision warning information and a prompt to exit the accelerator mis-stepping prevention function to the driver according to the collision warning level, and limit the driving torque output.

[0102] Step 604: when it is detected that the throttle opening is increased, the target collision warning level is increased, and a collision warning message is sent to the driver.

[0103] Step 605, when it is detected that the throttle opening is reduced to a preset third throttle opening threshold; or,

[0104] Detection of a gear shift to the parking position; or,

[0105] When the parking brake is detected to be activated, the accelerator anti-misoperation function is exited.

[0106] Step 606, when the vehicle speed is greater than 0 and less than or equal to a preset vehicle speed threshold, it is determined that the vehicle speed meets the low-speed condition. If it is detected that the throttle opening increases from a preset first throttle opening threshold to a preset second throttle opening threshold, and the throttle opening change rate increases from a preset first change rate threshold to a preset second change rate threshold, and the distance collision time is less than a preset second time threshold, a collision warning message and an exit prompt of the throttle anti-misstep function are sent to the driver according to the preset first-level collision warning level, and the drive torque output is limited.

[0107] Step 607, when it is detected that the throttle opening is increased, a collision warning message and a prompt to exit the throttle accidental stepping prevention function are sent to the driver according to the preset secondary collision warning level.

[0108] Step 608, adjusting the brake pressure according to the time to collision.

[0109] Step 609 : when it is detected that the throttle opening is reduced to a preset third throttle opening threshold, the driving torque output is restored.

[0110] Step 610, when it is detected that the gear is switched to the parking gear; or,

[0111] When the parking brake is detected to be activated, the accelerator anti-misoperation function is exited.

[0112] Step 611, when the vehicle speed is greater than a preset vehicle speed threshold, it is determined that the vehicle speed meets the high-speed condition. If it is detected that the time to collision is less than a preset third time threshold, automatic emergency braking is triggered and an automatic emergency braking alarm message is sent to the driver.

[0113] Step 612, when the vehicle's throttle anti-misoperation function is turned on and the gear is one of the forward gear, sports gear or reverse gear, if the steering wheel angle is detected to be greater than or equal to the preset angle threshold, the throttle anti-misoperation function is exited.

[0114] The embodiment of the present application provides a control method for an accelerator anti-misstepping function. The technical solution provided by the embodiment of the present application brings at least the following beneficial effects: when the accelerator anti-misstepping function of the vehicle is turned on, the vehicle speed, throttle opening, throttle opening change rate, the type of the nearest collision target on the vehicle trajectory, the distance collision time, the gear position and the parking brake status are obtained in real time; when the vehicle speed is 0, based on the throttle opening, the throttle opening change rate, the distance collision time and the collision target type, a first target throttle anti-misstepping function control strategy is determined and executed; the first target throttle anti-misstepping function control strategy is adjusted according to the throttle opening and the gear position; when the vehicle speed meets the preset low-speed condition, based on the throttle opening, the throttle opening change rate and the distance collision time, a second target throttle anti-misstepping function control strategy is determined and executed; the second target throttle anti-misstepping function control strategy is adjusted according to the throttle opening and the gear position; when the vehicle speed meets the preset high-speed condition, based on the distance collision time, a third target throttle anti-misstepping function control strategy is executed. This application can set the corresponding throttle anti-misstep function control strategy according to the vehicle speed, collision target type and driver operation conditions, so that the throttle anti-misstep function is more in line with the actual driving scenario, and the vehicle can display the operation method of exiting the throttle anti-misstep function to the driver, guide the driver's operation, so that the driver can get effective response in time, and reduce the impact of the throttle anti-misstep function on normal driving needs when it is activated.

[0115] It should be understood that although Figures 1 to 6 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figures 1 to 6 At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0116] It can be understood that the same / similar parts between the various embodiments of the above method in this specification can refer to each other, and each embodiment focuses on the differences from other embodiments. For related points, please refer to the description of other method embodiments.

[0117] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0118] It should also be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for display, data for analysis, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0119] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0120] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0121] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A control method for preventing accidental stepping of the accelerator, characterized in that: The method comprises: When the vehicle's throttle misstepping prevention function is turned on, obtain the vehicle speed, throttle opening, throttle opening change rate, the type of the nearest collision target on the vehicle trajectory, the time to collision, the gear position and the parking brake status in real time; When the vehicle speed is 0, determining and executing a first target throttle mis-stepping prevention function control strategy based on the throttle opening, the throttle opening change rate, the distance-to-collision time, and the collision target type; adjusting the first target throttle anti-misoperation function control strategy according to the throttle opening and the gear position; When the vehicle speed meets the preset low-speed condition, based on the throttle opening, the throttle opening change rate and the distance-to-collision time, a second target throttle mis-stepping prevention function control strategy is determined and executed; adjusting the second target throttle anti-misoperation function control strategy according to the throttle opening and the gear position; When the vehicle speed meets the preset high speed condition, a third target accelerator mis-stepping prevention function control strategy is executed based on the distance-to-collision time.

2. The method according to claim 1, characterized in that When the vehicle speed is 0, based on the throttle opening, the throttle opening change rate, the distance-to-collision time and the collision target type, determining and executing a first target throttle mis-stepping prevention function control strategy includes: When the vehicle speed is 0, if it is detected that the throttle opening increases from a preset first throttle opening threshold to a preset second throttle opening threshold, and the throttle opening change rate increases from a preset first change rate threshold to a preset second change rate threshold, and the distance-to-collision time is less than a preset first time threshold, then according to the collision target type, a target collision alarm level corresponding to the collision target type is determined; According to the collision warning level, a collision warning message and a prompt to exit the accelerator mis-stepping prevention function are sent to the driver, and the driving torque output is limited.

3. The method according to claim 2, characterized in that The step of determining, according to the collision target type, a target collision alarm level corresponding to the collision target type includes: If the collision target type is a static target, a preset first-level collision alarm level is determined as the target collision alarm level; If the collision target type is a dynamic target, the preset secondary collision warning level is determined as the target collision warning level.

4. The method according to claim 2, characterized in that: The control strategy for adjusting the first target throttle anti-misoperation function according to the throttle opening and the gear position includes: When it is detected that the throttle opening increases, the target collision warning level is increased, and a collision warning message is sent to the driver; When it is detected that the throttle opening is reduced to a preset third throttle opening threshold; or, detecting that the gear is switched to the parking gear; or, When it is detected that the parking brake state is activated, the accelerator mis-stepping prevention function is exited.

5. The method according to claim 1, characterized in that When the vehicle speed meets the preset low speed condition, based on the throttle opening, the throttle opening change rate and the distance-to-collision time, determining and executing a second target throttle mis-stepping prevention function control strategy includes: When the vehicle speed meets the low-speed condition, if it is detected that the throttle opening increases from a preset first throttle opening threshold to a preset second throttle opening threshold, and the throttle opening change rate increases from a preset first change rate threshold to a preset second change rate threshold, and the distance-to-collision time is less than a preset second time threshold, a collision warning message and a prompt to exit the throttle anti-misstep function are sent to the driver according to the preset first-level collision warning level, and the drive torque output is limited.

6. The method according to claim 5, characterized in that The control strategy for adjusting the second target throttle anti-misoperation function according to the throttle opening and the gear position includes: When it is detected that the throttle opening is increased, a collision warning message and a prompt to exit the throttle mis-stepping prevention function are sent to the driver according to a preset secondary collision warning level; adjusting brake pressure according to the distance-to-collision time; When it is detected that the throttle opening is reduced to a preset third throttle opening threshold, the driving torque output is restored; When it is detected that the gear is switched to the parking gear; or, When it is detected that the parking brake state is activated, the accelerator mis-stepping prevention function is exited.

7. The method according to claim 5, characterized in that The method further comprises: When the vehicle speed is greater than 0 and less than or equal to a preset vehicle speed threshold, it is determined that the vehicle speed meets the low speed condition.

8. The method according to claim 1, characterized in that When the vehicle speed meets the preset high speed condition, based on the distance-to-collision time, executing a third target throttle mis-stepping prevention function control strategy includes: When the vehicle speed meets the high-speed condition, if it is detected that the distance-to-collision time is less than a preset third time threshold, automatic emergency braking is triggered and an automatic emergency braking alarm message is sent to the driver.

9. The method according to claim 8, characterized in that The method further comprises: When the vehicle speed is greater than a preset vehicle speed threshold, it is determined that the vehicle speed meets the high speed condition.

10. The method according to claim 1, characterized in that The method further comprises: When the vehicle's throttle anti-misstep function is turned on and the gear is one of the forward gear, sports gear or reverse gear, if the steering wheel angle is detected to be greater than or equal to a preset angle threshold, the throttle anti-misstep function is exited.

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