CN115230652A - Control method and device for preventing mistakenly stepping on accelerator of vehicle, vehicle and storage medium - Google Patents
Control method and device for preventing mistakenly stepping on accelerator of vehicle, vehicle and storage medium Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
- B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
Abstract
The embodiment of the invention provides a control method and a control device for preventing a vehicle from stepping on an accelerator by mistake, the vehicle and a storage medium, wherein the method comprises the steps of starting an accelerator stepping-on prevention function when the vehicle speed is lower than a preset vehicle speed threshold value and the opening of the accelerator exceeds a preset opening threshold value; under the condition that the accelerator mistaken-stepping prevention function is started, acquiring road condition information of the vehicle driving direction, and judging whether acceleration is suitable or not according to the road condition information; when the vehicle is not suitable for acceleration, determining the braking distance of the vehicle according to the road condition information and the vehicle speed; and braking the vehicle according to the braking distance. Compared with the traditional mistakenly-stepping-prevention accelerator braking scheme, the technical scheme of the embodiment of the invention can identify whether the driver steps on the accelerator mistakenly or not according to the road condition information of the driving direction of the vehicle and whether the accelerator controlled by the driver exceeds the preset opening threshold or not on the premise of not adding additional components; if the vehicle is mistakenly stepped on, the vehicle is braked according to the braking distance of the vehicle, so that the intervention is actively carried out in time, and the accident rate is effectively reduced.
Description
Technical Field
The invention relates to the technical field of intelligent driving, in particular to a control method and a control device for preventing a vehicle from stepping on an accelerator by mistake, a vehicle and a storage medium.
Background
With the increasing popularity of automobiles in the daily life of the people, more and more users begin to use automobiles as the first choice vehicles for daily trips. Meanwhile, automobile traffic accidents occur in tens of thousands every year and even every day. When a driver encounters sudden braking of a front vehicle or sudden intrusion of a driving direction into a vehicle or a pedestrian or other sudden conditions in the process of driving an automobile by a user, braking measures should be taken at all. However, in some cases, if the driver is not paying attention or has a panic emotional response while driving, the driver may inadvertently press the accelerator pedal by mistake as a brake. In the automobile traffic accident, the accident caused by mistakenly stepping on the accelerator of the automobile is quite high in proportion, and the loss caused by the accident is quite serious.
In the prior art, an additional mechanical device is generally added to an automobile, so that not only can the driving experience of a driver be influenced, but also additional cost is increased, and therefore, the situation that the cost is not increased, the situation that the driver mistakenly takes an accelerator as a brake to prevent the vehicle from being out of control, and personal injury and property loss of the driver and other people are caused is urgently needed.
Disclosure of Invention
In view of the above problems, embodiments of the present invention are provided to provide a control method and a control device for preventing a wrong-way stepping on an accelerator of a vehicle, a vehicle and a storage medium that overcome or at least partially solve the above problems.
In order to solve the above problems, the embodiment of the invention discloses a control method for preventing a vehicle from stepping on an accelerator by mistake, which comprises the following steps:
when the speed of the vehicle is lower than a preset speed threshold and the opening of the accelerator exceeds a preset opening threshold, starting an accelerator mistaken-stepping prevention function;
under the condition that the accelerator mistaken-stepping prevention function is started, acquiring the road condition information of the vehicle driving direction, and judging whether the acceleration is suitable or not according to the road condition information;
when the vehicle is not suitable for acceleration, determining the braking distance of the vehicle according to the road condition information and the vehicle speed;
and braking the vehicle according to the braking distance.
Optionally, the determining whether acceleration is suitable according to the traffic information includes:
determining the safe driving distance of the driving direction of the vehicle according to the road condition information;
when the safe driving distance is larger than a preset safe distance, determining that the road condition information is suitable for acceleration;
and when the safe driving distance is not greater than the preset safe distance, determining that the road condition information is not suitable for acceleration.
Optionally, when the vehicle is not suitable for acceleration, determining the braking distance of the vehicle according to the road condition information and the vehicle speed includes:
determining the braking distance according to the vehicle speed and the safe driving distance; the braking distance is not greater than the safe driving distance.
Optionally, the traffic information includes movement information of a target object in a driving direction of the vehicle;
the determining the safe driving distance of the driving direction of the vehicle according to the road condition information comprises the following steps:
predicting the position information of the target object according to the movement information of the target object in the vehicle driving direction;
and determining the safe driving distance of the driving direction of the vehicle according to the position information of the target object.
Optionally, the braking the vehicle according to the braking distance includes:
determining the braking pressure required for braking the vehicle according to the braking distance and the vehicle speed; wherein the braking distance is inversely proportional to the braking pressure, and the vehicle speed is directly proportional to the braking pressure;
and sending a request to an electronic control brake boosting system of the vehicle according to the brake pressure so that the electronic control brake boosting system brakes the vehicle according to the request.
Optionally, the method further comprises:
and when the vehicle speed is higher than the preset vehicle speed threshold value, the accelerator mistaken-stepping prevention function is not allowed to be started.
Optionally, the method further comprises:
and when the vehicle is positioned on an uphill road section and the gradient is greater than a preset gradient threshold value, closing the accelerator step-on mistake prevention function.
Correspondingly, the embodiment of the invention discloses a control device for preventing a vehicle from stepping on an accelerator by mistake, which comprises:
the function starting module is used for starting an accelerator mistaken-stepping prevention function when the vehicle speed of the vehicle is lower than a preset vehicle speed threshold and the opening of the accelerator exceeds a preset opening threshold;
the information judging module is used for acquiring the road condition information of the vehicle driving direction under the condition that the accelerator wrong-stepping prevention function is started, and judging whether the acceleration is suitable or not according to the road condition information;
the distance determining module is used for determining the braking distance of the vehicle according to the road condition information and the vehicle speed when the vehicle is not suitable for acceleration;
and the vehicle braking module is used for braking the vehicle according to the braking distance.
Optionally, the information determining module includes:
the safe distance determining submodule is used for determining the safe driving distance of the driving direction of the vehicle according to the road condition information;
the first judgment submodule is used for determining that the road condition information is suitable for acceleration when the safe driving distance is greater than a preset safe distance;
and the second judgment submodule is used for determining that the road condition information is not suitable for acceleration when the safe driving distance is not greater than the preset safe distance.
Optionally, the distance determining module comprises:
the braking distance determining submodule is used for determining the braking distance according to the vehicle speed and the safe driving distance; the braking distance is not greater than the safe driving distance.
Optionally, the traffic information includes moving information of a target object in a driving direction of the vehicle;
the safe distance determination sub-module includes:
the pre-judging unit is used for predicting the position information of the target object according to the movement information of the target object in the vehicle driving direction;
and the safe distance determining unit is used for determining the safe driving distance of the driving direction of the vehicle according to the position information of the target object.
Optionally, the vehicle brake module comprises:
the pressure determining submodule is used for determining the braking pressure required by braking the vehicle according to the braking distance and the vehicle speed; wherein the braking distance is inversely proportional to the braking pressure, and the vehicle speed is directly proportional to the braking pressure;
the request sending submodule is used for sending a request to an electric control brake boosting system of the vehicle according to the brake pressure so that the electric control brake boosting system brakes the vehicle according to the request
Optionally, the apparatus further comprises:
and the vehicle speed judging module is used for not allowing the accelerator to be started to prevent the wrong stepping function when the vehicle speed of the vehicle is higher than the preset vehicle speed threshold value.
Optionally, the apparatus further comprises:
and the gradient judging module is used for closing the accelerator mistake-proofing stepping function when the vehicle is positioned on an uphill road section and the gradient is greater than a preset gradient threshold value.
The embodiment of the invention has the following advantages: compared with the traditional mistakenly-stepping-prevention accelerator braking scheme, the technical scheme of the embodiment of the invention can identify whether the driver steps on the accelerator mistakenly or not according to the road condition information of the driving direction of the vehicle and whether the accelerator controlled by the driver exceeds the preset opening threshold or not on the premise of not adding additional components; the preset opening threshold value can be obtained according to the actually collected opening value statistics of mistakenly stepping on the accelerator by the driver; after the statistical result is obtained specifically, whether the false stepping occupation ratio of an interval larger than a certain accelerator opening value is a large value (for example, 90%) is analyzed, and if so, the accelerator opening value is set as a preset opening threshold value, so that the accuracy of identifying whether the current driver steps the accelerator mistakenly can be improved; if the vehicle is mistakenly stepped on, the vehicle is braked according to the braking distance of the vehicle, so that the intervention is actively carried out in time, and the accident rate is effectively reduced.
Drawings
FIG. 1 is a flowchart illustrating steps of a method for controlling a vehicle to prevent a driver from stepping on an accelerator mistakenly according to an embodiment of the invention;
FIG. 2 is a flowchart illustrating steps of another method for controlling a vehicle to prevent a driver from stepping on a gas by mistake according to an embodiment of the invention;
fig. 3 is a block diagram of a control device for preventing a vehicle from stepping on an accelerator by mistake according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
In the prior art, in order to prevent a driver from carelessly stepping on the accelerator as a brake by mistake during driving, two methods are generally adopted for processing; the first is to provide a mechanical device for preventing wrong stepping, which not only affects the driving experience of the driver, but also adds extra cost; the second is that when there is collision risk in the driving direction, the power is directly cut off to stop the vehicle, if the vehicle is in fast driving, the vehicle is stopped suddenly, so that danger is easy to occur, and the rear-end collision risk is generated, which endangers the life and property safety of the vehicle and passengers in the rear vehicle.
One of the core concepts of the embodiment of the invention is to provide a method for judging whether the vehicle is accelerated or not according to the road condition information of the driving direction of the vehicle and braking the vehicle according to the braking distance when the opening of the accelerator exceeds the threshold value, so as to solve the problem that the vehicle is out of control when a driver mistakenly uses the accelerated accelerator as the brake.
Referring to fig. 1, a flowchart illustrating steps of a control method for preventing a vehicle from stepping on an accelerator by mistake according to an embodiment of the present invention is shown, where the method may specifically include the following steps:
In practical application, when a driver drives a vehicle, if an emergency occurs, the accelerator is easy to be stepped on as a brake, so that danger is very easy to occur, and therefore the accelerator needs to be controlled to ensure that no accident occurs when the driver mistakenly steps on the accelerator.
In the embodiment of the invention, whether the function of preventing the accelerator from being stepped on by mistake is started can be judged according to the speed of the vehicle and the opening degree of the accelerator. The accelerator mistaken-stepping prevention function is that when the speed of a vehicle meets a condition, the opening of an accelerator of the vehicle meets the condition and the road condition of the driving direction of the vehicle has a collision risk, namely the accelerator is stepped mistakenly or mistakenly, signals of the speed of the vehicle and the opening of the accelerator are responded to, and the vehicle is braked.
When a vehicle is traveling at high speed, if the vehicle is suddenly stopped, danger is likely to occur. Therefore, when the vehicle speed is lower than the preset vehicle speed threshold value, the accelerator wrong-stepping prevention function is allowed to be started, and when the opening degree of the accelerator exceeds the preset opening degree threshold value, the accelerator wrong-stepping prevention function is started. For example, the preset vehicle speed threshold is 60 km/h, the preset opening threshold is 80%, when the vehicle speed is 50 km/h, the vehicle is allowed to start the accelerator step-on prevention function, but the accelerator step-on prevention function is not started, at this time, if the driver suddenly steps on the accelerator to 85%, the accelerator step-on prevention function is started, and the specific preset vehicle speed threshold and the preset opening threshold are not limited in this embodiment of the present invention.
And 102, acquiring the road condition information of the vehicle driving direction under the condition that the accelerator wrong-stepping prevention function is started, and judging whether the acceleration is suitable or not according to the road condition information.
In practical application, the road condition information of the vehicle driving direction is usually obtained by using the camera and the radar of the vehicle, because the driver can not always pay attention to the condition of the vehicle driving direction when driving, at this time, the camera and the radar play a key role.
In the embodiment of the invention, under the condition that the accelerator mistaken-stepping prevention function is started, the road condition information of the driving direction of the vehicle is obtained, and when the condition that obstacles exist in the preset range of the vehicle is judged according to the road condition information, the fact that the vehicle is not suitable for acceleration is determined. The road condition information may include information such as movement information of a target object in a vehicle driving direction, object type, initial position, distance corresponding to the vehicle, and the like; the target object can be a person, an automobile, a flower bed and the like. For example, the road condition information is that a car is located 50m away from the front of the car, a pedestrian is located 10m away from the left, and a flower bed is located 1m away from the right; when it is determined that there is a pedestrian in a certain range of the driving direction according to the road condition information, it is determined that the vehicle is not suitable for acceleration, or when it is determined that there is another vehicle in a certain range of the driving direction, it is not suitable for acceleration, and the specific road condition information content and the condition of determining whether the vehicle is not suitable for acceleration according to the road condition information may be set according to actual requirements. For example, if an obstacle in a certain range of the traveling direction is in motion, it may be analyzed whether a collision will occur or not by combining the vehicle speed difference between the host vehicle and the preceding vehicle and the acceleration corresponding to the opening degree of the accelerator of the host vehicle, and if not, it is not suitable for acceleration, otherwise, it is not suitable for acceleration. If the obstacle in a certain range of the traveling direction is in a stationary state, it is possible to analyze whether or not a collision will occur in conjunction with the vehicle speed of the vehicle and the acceleration corresponding to the accelerator opening, and if not, it is appropriate to accelerate, otherwise, it is not appropriate to accelerate.
And 103, when the vehicle is not suitable for acceleration, determining the braking distance of the vehicle according to the road condition information and the vehicle speed.
And determining the braking distance of the vehicle according to the road condition information and the vehicle speed when the vehicle is not suitable for acceleration according to the judgment of the road condition information. In a specific implementation mode, the distance that the vehicle can stop can be calculated according to the road condition information, the vehicle speed of the vehicle and the preset brake pressure, and the distance is determined to be the brake distance; the preset brake pressure value is the average brake pressure which has small impact force on a driver and is most suitable for braking in the braking process.
And 104, braking the vehicle according to the braking distance.
When the braking can be finished through the preset braking pressure without collision, the braking distance is calculated according to the deceleration corresponding to the preset braking pressure and the vehicle speed of the vehicle; at this time, a preset brake pressure value is adopted to brake the vehicle. If the vehicle can not be braked by the preset brake pressure without collision, the brake distance is the maximum distance for preventing the vehicle from collision; in this case, the deceleration of the vehicle is obtained based on the braking distance and the vehicle speed of the vehicle, and the vehicle is braked based on the deceleration. The embodiment of the present invention is not limited to this.
The embodiment of the invention has the following advantages: compared with the traditional mistakenly-stepping-prevention accelerator braking scheme, the technical scheme of the embodiment of the invention can identify whether the driver steps on the accelerator mistakenly or not according to the road condition information of the driving direction of the vehicle and whether the accelerator controlled by the driver exceeds the preset opening threshold or not on the premise of not adding additional components; the preset opening threshold value can be obtained according to the actually collected opening value statistics of mistakenly stepping on the accelerator by the driver; after the statistical result is obtained specifically, whether the false stepping occupation ratio of an interval larger than a certain accelerator opening value is a larger value (for example, 90%) is analyzed, if yes, the accelerator opening value is set as a preset opening threshold value, and therefore the accuracy of identifying whether the current driver steps on the accelerator by mistake can be improved; if the vehicle is mistakenly stepped on, the vehicle is braked according to the braking distance of the vehicle, so that the intervention is actively carried out in time, and the accident rate is effectively reduced.
Referring to fig. 2, a flowchart illustrating steps of another control method for preventing a vehicle from stepping on an accelerator by mistake according to an embodiment of the present invention is shown, where the method may specifically include the following steps:
And 202, acquiring the road condition information of the driving direction of the vehicle under the condition that the accelerator wrong-stepping prevention function is started, and judging whether the acceleration is suitable or not according to the road condition information.
In an embodiment of the present invention, the step 202 may include the following sub-steps:
a substep S11, determining the safe driving distance of the vehicle driving direction according to the road condition information;
substep S12, when the safe driving distance is larger than a preset safe distance, determining that the road condition information is suitable for acceleration;
and a substep S13, determining that the road condition information is not suitable for acceleration when the safe driving distance is not greater than a preset safe distance.
Determining a safe driving distance of a vehicle driving direction according to the road condition information, and determining that the road condition information is suitable for acceleration when the safe driving distance is greater than a preset safe distance; and when the safe driving distance is not more than the preset safe distance, determining that the road condition information is not suitable for acceleration. The safe-running distance is a distance at which the host vehicle can run safely without collision. For example, if the preset safe distance is 100m, and a vehicle B is in front of the vehicle a at a position 150m, it is determined that the safe driving distance is 150m, and at this time, the safe driving distance is greater than the preset safe distance, and it can be determined that the road condition information is suitable for acceleration; if one vehicle B is in the position 50m in front of the vehicle A, the safe driving distance is determined to be 50m, and at the moment, the safe driving distance is not larger than the preset safe distance, so that the condition information is not suitable for acceleration. The preset safety distance can be set in advance according to the conditions of the speed, road conditions and the like of the vehicle. Specifically, the larger the vehicle speed is, the larger the corresponding preset safety distance is; the more crowded the road is, the smaller the corresponding preset safety distance is, and the like. For example, when the vehicle speed is a first vehicle speed, determining a first preset safe distance; when the vehicle speed is at a second vehicle speed, determining a second preset safety distance; or when the vehicle runs in an unmanned suburb, determining a first preset safe distance; and when the vehicle runs in the alarm area, determining a second preset safe distance.
When the target object in the traveling direction is in a motion state, the substep S11 may comprise: predicting the position information of the target object according to the movement information of the target object in the vehicle driving direction; and determining the safe driving distance of the driving direction of the vehicle according to the position information of the target object.
The road condition information includes movement information of the target object in the traveling direction of the vehicle. Predicting position information of the target object after a period of time according to the movement information of the target object in the driving direction of the vehicle; and determining the safe driving distance of the driving direction of the vehicle according to the position information of the target object. For example, if there is a vehicle B at a position 150m ahead of the vehicle a, the vehicle B has a vehicle speed of 30 km/hour and is traveling in the same direction as the vehicle a, the time during which the vehicle a can stop can be calculated based on the vehicle speed of the vehicle a and a preset brake pressure value, the distance traveled by the vehicle B can be predicted based on the vehicle speed of the vehicle B and the time, the travel distance of the vehicle B and the distance from the vehicle a are determined, and the sum of the distances is determined as the safe travel distance in the travel direction of the vehicle a; if the vehicle B is driven towards the direction of the vehicle A, calculating the time for stopping the vehicle A according to the speed of the vehicle A and a preset brake pressure value, calculating the driving distance of the vehicle B in the time according to the speed of the vehicle B and the time, and then subtracting the driving distance of the vehicle B from the distance to determine the safe driving distance of the driving direction of the vehicle A.
Because the prediction method may be different according to different object classes. For example, the traffic light can be calculated according to the conditions of the green light or the red light; or, the running direction of the vehicle, namely the bicycle or the electric vehicle, can be calculated according to actual conditions. Therefore, the specific calculation object and the calculation method may be set according to actual requirements, and the embodiment of the present invention is not limited to this.
When the target object in the traveling direction is in a stationary state, the substep S11 may comprise: position information of the target object according to a vehicle traveling direction; and determining the safe driving distance of the driving direction of the vehicle according to the position information of the target object and the position information of the vehicle.
If the safe driving distance is within the preset safe distance, the driver possibly mistakenly steps on the accelerator due to tension, and at the moment, the driver is judged to mistakenly step on the accelerator and is not suitable for acceleration; in the subsequent step, if the acceleration is not suitable, the braking is determined to be needed; if the safe driving distance is beyond the preset safe distance, the vehicle is suitable for accelerating, and the driver normally steps on the accelerator; the preset safe distance can be set by the driver according to own experience, if the safe driving distance is within the preset safe distance, the situation that the driving direction of the vehicle has obstacles is shown, and the vehicle is not suitable for acceleration, so that the situation that the driver steps on the accelerator by mistake is judged; if the safe driving distance is beyond the preset safe distance, no obstacle exists in the preset safe distance of the vehicle, and the vehicle can be accelerated according to the operation of stepping on the accelerator by the driver. Therefore, the safe driving distance can be more accurately judged according to the preset safe distance. The specific preset safe distance setting method is not limited in this respect in the embodiments of the present invention.
And 203, when the vehicle is not suitable for acceleration, determining the braking distance of the vehicle according to the road condition information and the vehicle speed.
In an embodiment of the present invention, the step 203 may include the following sub-steps:
a substep S21, determining the braking distance according to the vehicle speed and the safe driving distance; the braking distance is not greater than the safe driving distance.
In one example, the distance traveled by the vehicle to be braked to a stop state according to the preset brake pressure is calculated, and the distance is determined as the estimated distance; the preset brake pressure value is the average brake pressure which has small impact force on a driver and is most suitable for braking in the braking process.
And comparing the safe driving distance with the estimated distance to determine the braking distance. When the target object in the vehicle driving direction is in a stationary state, the distance between the vehicle and the target object is determined as a safe driving distance. For example, if there is a vehicle B at 50m in front of the vehicle a, the vehicle speed of the vehicle B is 0, and the vehicle speed of the vehicle a is 40 km/hour, it is determined that 50m is the safe driving distance, and then the estimated distance is calculated, if the estimated distance is not greater than 50m, the estimated distance is the braking distance, and if the estimated distance is greater than 50m, 50m is the braking distance, that is, the safe driving distance is the braking distance.
In another example, the target object in the traveling direction of the vehicle is assumed to be moving all the time, and may be based on the vehicle speed v of the vehicle 1 And a preset brake pressure a, calculating a time t at which the vehicle can be stopped,the calculation formula is as follows: v. of 1 = at; then according to the time t and the moving speed v of the target object 2 And calculating the moving distance s of the target object, wherein the calculation formula is as follows: s = v 2 * t; determining the safe driving distance plus the moving distance of the target object as a target safe driving distance; finally, comparing the target safe driving distance with the estimated distance to determine a braking distance; if the estimated distance is not greater than the target safe driving distance, determining the estimated distance as a braking distance; and if the estimated distance is greater than the target safe driving distance, determining the target safe driving distance as the braking distance. For example, the vehicle speed of the vehicle A is 40 km/h, a vehicle B is arranged at a position 50m in front of the vehicle A, the vehicle speed of the vehicle B is 40 km/h, the time for stopping the vehicle A is calculated according to the vehicle speed of the vehicle and a preset brake pressure, the moving distance of an object driven by the vehicle B is calculated according to the time and the vehicle speed of the vehicle B, and the distance plus 50m of safe driving distance is determined as a target safe driving distance; and calculating the estimated distance, and comparing the target safe driving distance with the estimated distance to determine the braking distance. The embodiment of the present invention does not limit this, and because there is not necessarily only one target object that causes the vehicle to be unsuitable for acceleration, there may be more than one corresponding distance obtained, and the embodiment of the present invention does not limit this.
And 204, braking the vehicle according to the braking distance.
If the safe driving distance is larger than the estimated distance, the final braking distance is the estimated distance, and braking can be performed according to the preset braking pressure.
If the safe driving distance is not greater than the estimated distance, the final braking distance is the safe driving distance, and the required braking force is greater than the preset braking pressure, so that the vehicle can brake at the safe driving distance; similarly, if the target safe driving distance is greater than the estimated distance, the final braking distance is the estimated distance, and braking can be performed according to the preset braking pressure; and if the target safe driving distance is not more than the estimated distance, the final braking distance is the target safe driving distance, and the required braking force is more than the preset braking pressure, so that the vehicle can brake at the target safe driving distance. In an embodiment of the present invention, if the safe driving distance is not greater than the estimated distance, the step 204 may include the following sub-steps:
a substep S31, determining the braking pressure required for braking the vehicle according to the braking distance and the vehicle speed; wherein the braking distance is inversely proportional to the braking pressure, and the vehicle speed is directly proportional to the braking pressure;
and a substep S32, sending a request to an electric control brake boosting system of the vehicle according to the brake pressure so that the electric control brake boosting system brakes the vehicle according to the request.
Determining the braking pressure required for braking the vehicle according to the braking distance and the vehicle speed; and sending a request to an electric control brake boosting system of the vehicle according to the brake pressure so that the electric control brake boosting system brakes the vehicle according to the request. The braking distance and the braking pressure are in inverse proportion, and the vehicle speed and the braking pressure are in direct proportion. In practical application, a vehicle is braked by giving a brake pressure, the electric control brake boosting system brakes the vehicle according to the brake pressure, and the brake pressure is different according to different conditions. For example, when the braking distance is small and the speed is large, the braking pressure is large; when the braking distance is large and the speed is small, the braking pressure is small. After the braking pressure is determined, a request is sent to an electronic control brake boosting system of the vehicle, so that the electronic control brake boosting system brakes the vehicle according to the request.
And step 205, when the vehicle speed is higher than the preset vehicle speed threshold, not allowing the accelerator mistaken stepping prevention function to be started.
And when the vehicle speed of the vehicle is higher than the preset vehicle speed threshold value, the accelerator wrong-stepping prevention function is not allowed to be started. In practical application, when the vehicle speed is high, sudden braking or deceleration is a dangerous thing, so the vehicle speed needs to be judged; when the speed of the vehicle is higher than the preset speed threshold, if the opening of the accelerator exceeds the preset opening threshold, the accelerator mistaken-stepping prevention function is not started.
And step 206, when the vehicle is in an uphill road section and the gradient is greater than a preset gradient threshold value, closing the accelerator mistaken stepping prevention function.
And when the vehicle is positioned on an uphill road section and the gradient is greater than a preset gradient threshold value, closing the accelerator and preventing the wrong stepping function. In practical application, the accelerator needs to be increased on an uphill slope, the opening degree of the accelerator is larger than that of the accelerator during normal driving, and if the accelerator is turned on, the vehicle can slide down, which is very dangerous. Therefore, when the gradient is larger than the preset gradient threshold value, the accelerator is closed to prevent the wrong stepping function.
The embodiment of the invention has the following advantages: compared with the traditional mistakenly-stepping-prevention accelerator braking scheme, the technical scheme of the embodiment of the invention can identify whether the driver steps on the accelerator mistakenly or not according to the road condition information of the driving direction of the vehicle and whether the accelerator controlled by the driver exceeds the preset opening threshold or not on the premise of not adding additional components; the preset opening threshold value can be obtained according to the actually collected opening value statistics of mistakenly stepping on the accelerator by the driver; after the statistical result is obtained specifically, whether the false stepping occupation ratio of an interval larger than a certain accelerator opening value is a large value (for example, 90%) is analyzed, and if so, the accelerator opening value is set as a preset opening threshold value, so that the accuracy of identifying whether the current driver steps the accelerator mistakenly can be improved; if the vehicle is mistakenly stepped on, the vehicle is braked according to the braking distance of the vehicle, so that the intervention is actively carried out in time, and the accident rate is effectively reduced.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Referring to fig. 2, a structural block diagram of a control device for preventing a vehicle from stepping on an accelerator by mistake according to an embodiment of the present invention is shown, and the structural block diagram may specifically include the following modules:
the function starting module 301 is used for starting an accelerator mistaken stepping prevention function when the vehicle speed of the vehicle is lower than a preset vehicle speed threshold and the opening of the accelerator exceeds a preset opening threshold;
the information judgment module 302 is configured to, when the accelerator wrong-stepping prevention function is turned on, acquire road condition information of the vehicle driving direction, and judge whether acceleration is suitable according to the road condition information;
the distance determining module 303 is configured to determine a braking distance of the vehicle according to the road condition information and the vehicle speed when acceleration is not suitable;
and a vehicle braking module 304, configured to brake the vehicle according to the braking distance.
Optionally, the information determining module 302 includes:
the safe distance determining submodule is used for determining the safe driving distance of the driving direction of the vehicle according to the road condition information;
the first judgment submodule is used for determining that the road condition information is suitable for acceleration when the safe driving distance is greater than a preset safe distance;
and the second judgment submodule is used for determining that the road condition information is not suitable for acceleration when the safe driving distance is not greater than the preset safe distance.
Optionally, the distance determining module 303 includes:
the safe distance determining submodule is used for determining the safe driving distance of the driving direction of the vehicle according to the road condition information;
the braking distance determining submodule is used for determining the braking distance according to the vehicle speed and the safe driving distance; the braking distance is not greater than the safe driving distance.
Optionally, the traffic information includes movement information of a target object in a driving direction of the vehicle;
the safe distance determination submodule includes:
the pre-judging unit is used for predicting the position information of the target object according to the movement information of the target object in the vehicle driving direction;
and the safe distance determining unit is used for determining the safe driving distance of the driving direction of the vehicle according to the position information of the target object.
Optionally, the vehicle brake module 304 comprises:
the pressure determining submodule is used for determining the braking pressure required by braking the vehicle according to the braking distance and the vehicle speed; wherein the braking distance is inversely proportional to the braking pressure, and the vehicle speed is directly proportional to the braking pressure;
the request sending submodule is used for sending a request to an electric control brake boosting system of the vehicle according to the brake pressure so that the electric control brake boosting system brakes the vehicle according to the request
Optionally, the apparatus further comprises:
and the vehicle speed judging module is used for not allowing the accelerator to be started to prevent the wrong stepping function when the vehicle speed of the vehicle is higher than the preset vehicle speed threshold value.
Optionally, the apparatus further comprises:
and the gradient judging module is used for closing the accelerator mistake-proofing stepping function when the vehicle is positioned on an uphill road section and the gradient is greater than a preset gradient threshold value.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
An embodiment of the present invention further provides a vehicle, including:
the control method comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, wherein when the computer program is executed by the processor, each process of the control method embodiment for preventing the vehicle from stepping on the accelerator by mistake is realized, the same technical effect can be achieved, and the process is not repeated here for avoiding repetition.
The embodiment of the invention also provides a computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when being executed by a processor, the computer program realizes each process of the control method for preventing the vehicle from stepping on the accelerator by mistake, can achieve the same technical effect, and is not repeated herein for avoiding repetition.
The embodiments in the present specification are all described in a progressive manner, and each embodiment focuses on differences from other embodiments, and portions that are the same and similar between the embodiments may be referred to each other.
As will be appreciated by one of skill in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the true scope of the embodiments of the present invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "include", "including" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or terminal device including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such process, method, article, or terminal device. Without further limitation, an element defined by the phrases "comprising one of \ 8230; \8230;" does not exclude the presence of additional like elements in a process, method, article, or terminal device that comprises the element.
The control method for preventing the accelerator from being stepped on by mistake for the vehicle, the control device for preventing the accelerator from being stepped on by mistake for the vehicle, the vehicle and the storage medium are described in detail, specific examples are applied to explain the principle and the implementation mode of the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A control method for preventing a vehicle from stepping on an accelerator by mistake is characterized by comprising the following steps:
when the speed of the vehicle is lower than a preset speed threshold and the opening of the accelerator exceeds a preset opening threshold, starting an accelerator mistaken-stepping prevention function;
under the condition that the accelerator mistaken-stepping prevention function is started, acquiring the road condition information of the vehicle driving direction, and judging whether the acceleration is suitable or not according to the road condition information;
when the vehicle is not suitable for acceleration, determining the braking distance of the vehicle according to the road condition information and the vehicle speed;
and braking the vehicle according to the braking distance.
2. The method as claimed in claim 1, wherein the determining whether acceleration is suitable according to the traffic information comprises:
determining the safe driving distance of the driving direction of the vehicle according to the road condition information;
when the safe driving distance is larger than a preset safe distance, determining that the road condition information is suitable for acceleration;
and when the safe driving distance is not greater than the preset safe distance, determining that the road condition information is not suitable for acceleration.
3. The method of claim 2, wherein determining the braking distance of the vehicle based on the road condition information and the vehicle speed when acceleration is not appropriate comprises:
determining the braking distance according to the vehicle speed and the safe driving distance; the braking distance is not greater than the safe driving distance.
4. The method according to claim 2, wherein the traffic information includes movement information of a target object in a driving direction of the vehicle;
the determining the safe driving distance of the driving direction of the vehicle according to the road condition information comprises the following steps:
predicting the position information of a target object according to the movement information of the target object in the driving direction of the vehicle;
and determining the safe driving distance of the driving direction of the vehicle according to the position information of the target object.
5. The method of claim 1, wherein braking the vehicle according to the braking distance comprises:
determining the braking pressure required for braking the vehicle according to the braking distance and the vehicle speed; wherein the braking distance is inversely proportional to the braking pressure, and the vehicle speed is directly proportional to the braking pressure;
and sending a request to an electronic control brake boosting system of the vehicle according to the brake pressure so that the electronic control brake boosting system brakes the vehicle according to the request.
6. The method of claim 1, further comprising:
and when the vehicle speed is higher than the preset vehicle speed threshold value, the accelerator mistaken-stepping prevention function is not allowed to be started.
7. The method of claim 1, further comprising:
and when the vehicle is positioned on an uphill road section and the gradient is greater than a preset gradient threshold value, closing the accelerator step-by-step prevention function.
8. A control device for preventing a vehicle from stepping on an accelerator by mistake is characterized by comprising:
the function starting module is used for starting the accelerator mistakenly-stepping prevention function when the vehicle speed of the vehicle is lower than a preset vehicle speed threshold and the opening of the accelerator exceeds a preset opening threshold;
the information judgment module is used for acquiring the road condition information of the vehicle driving direction under the condition that the accelerator mistaken-stepping prevention function is started, and judging whether the acceleration is suitable or not according to the road condition information;
the distance determining module is used for determining the braking distance of the vehicle according to the road condition information and the vehicle speed when the vehicle is not suitable for acceleration;
and the vehicle braking module is used for braking the vehicle according to the braking distance.
9. A vehicle, characterized by comprising: processor, memory and computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of a method for controlling a vehicle to prevent stepping on a gas by mistake according to any of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of a method for controlling a vehicle to prevent stepping on a gas by mistake according to any one of claims 1 to 7.
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| CN202210460790.6A CN115230652A (en) | 2022-04-28 | 2022-04-28 | Control method and device for preventing mistakenly stepping on accelerator of vehicle, vehicle and storage medium |
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| CN202210460790.6A CN115230652A (en) | 2022-04-28 | 2022-04-28 | Control method and device for preventing mistakenly stepping on accelerator of vehicle, vehicle and storage medium |
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