CN114572200A - Driving protection method and device and vehicle - Google Patents

Driving protection method and device and vehicle Download PDF

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Publication number
CN114572200A
CN114572200A CN202011372345.1A CN202011372345A CN114572200A CN 114572200 A CN114572200 A CN 114572200A CN 202011372345 A CN202011372345 A CN 202011372345A CN 114572200 A CN114572200 A CN 114572200A
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China
Prior art keywords
vehicle
distance
preset
driving protection
current
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CN202011372345.1A
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Chinese (zh)
Inventor
刘文超
单红艳
王胜涛
吴志伟
王雪亮
贾晓伟
李洪起
索乾
李壮
王云云
杨广建
舒瑶瑶
葛九洋
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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Priority to CN202011372345.1A priority Critical patent/CN114572200A/en
Publication of CN114572200A publication Critical patent/CN114572200A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/08—Active safety systems predicting or avoiding probable or impending collision or attempting to minimise its consequences
    • B60W30/09—Taking automatic action to avoid collision, e.g. braking and steering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/08—Active safety systems predicting or avoiding probable or impending collision or attempting to minimise its consequences
    • B60W30/095—Predicting travel path or likelihood of collision
    • B60W30/0953—Predicting travel path or likelihood of collision the prediction being responsive to vehicle dynamic parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/16—Ratio selector position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2552/00—Input parameters relating to infrastructure
    • B60W2552/50—Barriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2554/00—Input parameters relating to objects
    • B60W2554/80—Spatial relation or speed relative to objects
    • B60W2554/802—Longitudinal distance
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Traffic Control Systems (AREA)

Abstract

The application provides a driving protection method, a driving protection device and a vehicle, and belongs to the technical field of automobiles. The method comprises the following steps: when the obstacle is detected to exist in the preset distance range, the distance between the obstacle and the vehicle is obtained; under the condition that the distance is smaller than a first preset distance threshold value and the accelerator opening of the vehicle is larger than a preset opening threshold value, triggering a driving protection mode; controlling the vehicle to stop running in response to the driving protection mode; when a starting signal of the vehicle is detected again, determining the current collision risk level of the vehicle according to the current gear, the vehicle speed and the distance of the vehicle; and reducing the vehicle speed of the vehicle to a preset vehicle speed corresponding to the collision risk grade according to the collision risk grade. By using the driving protection method provided by the application, when the driving protection condition is met, the driving protection mode is automatically triggered, and the problem that the vehicle is collided due to factors such as the fact that the starting speed of the vehicle is too high, the driver misjudges the distance between the obstacle and the vehicle and the like is solved.

Description

Driving protection method and device and vehicle
Technical Field
The embodiment of the application relates to the technical field of automobiles, in particular to a driving protection method, a driving protection device and a vehicle.
Background
At present, the quantity of automobiles in China is continuously increased, the parking space of the automobiles is limited, when the automobiles start again after parking, because the starting speed of the automobiles is too high, the accidents of vehicle collision caused by factors such as misjudgment of a driver on the distance between an obstacle and the automobiles are more and more, the existing automobiles do not have the function of loading automatic protection, and the collision accidents are frequent when the automobiles start.
Disclosure of Invention
The embodiment of the application provides a driving protection method, and aims to solve the problem that a driver misjudges the distance between an obstacle and a vehicle and other factors cause vehicle collision due to the fact that the starting speed of the vehicle is too high.
A first aspect of an embodiment of the present application provides a driving protection method, including:
when the obstacle is detected to exist in the preset distance range, the distance between the obstacle and the vehicle is obtained;
under the condition that the distance is smaller than a first preset distance threshold value and the accelerator opening of the vehicle is larger than a preset opening threshold value, triggering a driving protection mode;
controlling the vehicle to stop running in response to the driving protection mode;
when a starting signal of the vehicle is detected again, determining the current collision risk level of the vehicle according to the current gear, the vehicle speed and the distance of the vehicle;
and reducing the vehicle speed of the vehicle to a preset vehicle speed corresponding to the collision risk grade according to the collision risk grade.
Optionally, determining the collision risk level currently faced by the vehicle according to the current gear, the vehicle speed and the distance of the vehicle, including:
obtaining a historical gear of the vehicle when a driving protection mode is triggered;
under the condition that the traveling direction represented by the historical gear is consistent with the traveling direction represented by the current gear of the vehicle, determining the current collision risk level of the vehicle according to the current throttle opening value, the vehicle speed and the distance of the vehicle;
and under the condition that the traveling direction represented by the historical gear is inconsistent with the traveling direction represented by the current gear of the vehicle, the vehicle protection mode is released to allow the vehicle to normally travel.
Optionally, determining a current collision risk level of the vehicle according to the current throttle opening value, the vehicle speed and the distance of the vehicle, including:
when the distance between the obstacle and the vehicle is larger than a second preset distance threshold and smaller than a first preset distance threshold, determining that the current collision risk level of the vehicle is a low-risk collision level;
and when the distance between the obstacle and the vehicle is smaller than or equal to a second preset distance threshold value, and the vehicle speed is larger than or equal to a preset speed threshold value, determining that the collision risk level is a high-risk collision level.
Optionally, reducing the vehicle speed of the vehicle to a preset vehicle speed corresponding to the collision risk level according to the collision risk level includes:
when the collision risk level is a low-risk collision level, controlling the throttle opening to be kept at a preset minimum opening, and reducing the vehicle speed of the vehicle to a preset vehicle speed threshold value;
when the collision risk level is a high-risk collision level, the vehicle is controlled to stop traveling so that the vehicle speed of the vehicle is zero.
Optionally, after reducing the vehicle speed of the vehicle to a preset vehicle speed corresponding to the collision risk level, the method further comprises:
if the current gear is detected to be converted into the target gear, the driving protection mode is exited to allow the vehicle to automatically advance;
and the vehicle traveling direction represented by the target gear is different from the vehicle traveling direction represented by the current gear.
Optionally, when the collision risk level is a low-risk collision level, the throttle opening is controlled to be kept at a preset minimum opening, and the vehicle speed of the vehicle is reduced to a preset vehicle speed threshold, and the method further comprises: and outputting an alarm prompt.
Optionally, when the collision risk level is a high-risk collision level, controlling the vehicle to stop traveling so that a vehicle speed of the vehicle is zero includes:
controlling a clutch of the vehicle to be automatically opened, and controlling the gear of the vehicle to return to a P gear so as to control the vehicle to stop running;
and outputting an alarm prompt.
This application second aspect provides a driving protection device, includes:
a first obtaining module: the system comprises a distance acquisition module, a distance acquisition module and a control module, wherein the distance acquisition module is used for acquiring the distance from an obstacle to a vehicle when the obstacle is detected to exist in a preset distance range;
a first determination module: the driving protection mode is triggered according to the condition that the distance is smaller than a first preset distance threshold value and the opening degree of an accelerator of the vehicle is larger than a preset opening degree threshold value;
a first control module: the vehicle is controlled to stop running according to the response to the driving protection mode;
a second determination module: the system comprises a detection module, a control module and a display module, wherein the detection module is used for detecting the current gear, the current speed and the current distance of the vehicle when a starting signal of the vehicle is detected again, and determining the current collision risk level of the vehicle according to the current gear, the current speed and the current distance of the vehicle;
a second control module: and the vehicle speed control module is used for controlling and reducing the vehicle speed of the vehicle to a preset vehicle speed corresponding to the collision risk grade according to the collision risk grade.
A third aspect of the present application provides an automobile provided with a driving protection device as provided in the second aspect of the present application, the driving protection device being configured to perform the driving protection method as provided in the first aspect of the present application.
Has the advantages that:
according to the driving protection method, the distance between the obstacle and the vehicle and the opening degree value of the accelerator of the vehicle are detected, when the distance between the obstacle and the vehicle is smaller than the safety critical distance of the vehicle and the vehicle has the intention of starting, the system judges that the vehicle has the risk of collision, a driving protection mode is automatically triggered, and the vehicle is controlled to stop moving; when the vehicle is started through manual control, the current collision risk level of the vehicle is automatically determined according to the current gear, the speed and the distance of the vehicle, the running speed of the vehicle is controlled and reduced according to different collision risk levels, the vehicle is guaranteed not to collide when running at the speed, the problem of vehicle collision caused by improper operation of a driver is solved, and the safety performance of vehicle driving is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a flowchart illustrating steps of a driving protection method according to an embodiment of the present application;
FIG. 2 is a flowchart illustrating steps taken in determining a current collision risk level of a vehicle according to a current gear, a current vehicle speed, and a current distance of the vehicle according to an embodiment of the present application;
FIG. 3 is a flowchart illustrating a first step of reducing a vehicle speed of a vehicle to a preset vehicle speed corresponding to a collision risk level according to the collision risk level according to an embodiment of the present application;
FIG. 4 is a flowchart illustrating a second step of reducing the vehicle speed of the vehicle to a predetermined vehicle speed corresponding to the collision risk level according to an embodiment of the present application;
fig. 5 is a block diagram of a driving protection device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
In the related technology, the automobile holding capacity of China is continuously increased, the parking space of the automobile is limited, when the automobile stops and then starts, because the starting speed of the automobile is too high, the accident of vehicle collision caused by the misjudgment of a driver on the distance between an obstacle and the automobile and other factors is more and more, the existing automobile is not provided with an automatic protection function, and the collision accident is frequent when the automobile starts.
In view of the above, according to the driving protection method provided by the application, by detecting the distance from the obstacle to the vehicle and the opening degree value of the accelerator of the vehicle, when the distance from the obstacle to the vehicle is smaller than the safety critical distance of the vehicle and the vehicle has an intention to start, the system determines that the vehicle has a collision risk, automatically triggers a driving protection mode, and controls the vehicle to stop moving; when the vehicle is started through manual control, the collision risk level of the vehicle is automatically determined according to the current gear, the vehicle speed and the distance of the vehicle, the running speed of the vehicle is controlled and reduced according to different collision risk levels, and the vehicle is guaranteed not to collide when running at the speed, so that the problem of vehicle collision caused by improper operation of a driver is solved, and the safety performance of vehicle driving is improved.
Example one
Referring to fig. 1, a flowchart illustrating steps of a driving protection method according to the present application is shown, and as shown in fig. 1, a driving protection method includes:
step S101: and when the obstacle is detected to exist in the preset distance range, acquiring the distance between the obstacle and the vehicle.
In the step, the distance between the obstacle and the vehicle can be the distance between the obstacle and the front part of the vehicle or the distance between the obstacle and the tail part of the vehicle; the distance can be obtained by front and rear radars of the vehicle.
Step S102: and under the condition that the distance is smaller than a first preset distance threshold value and the accelerator opening of the vehicle is larger than a preset accelerator opening threshold value, triggering a driving protection mode.
In this step, the first preset distance threshold is used for representing that the distance is a critical distance for vehicle safety, the distance smaller than the distance represents that the vehicle has a risk of collision, and the first preset distance threshold may be 350 mm; the preset accelerator opening threshold is used for representing the intention of starting the automobile, and the preset accelerator opening threshold can be 5%; namely, when the distance between the obstacle and the vehicle is less than the safety critical distance of the vehicle, and the vehicle is started at the same time, the vehicle can be judged to have the risk of collision, so that the driving protection mode is automatically triggered.
Step S103: and controlling the vehicle to stop running in response to the driving protection mode.
In the step, the vehicle is controlled to stop running in response to the driving protection mode, so that a vehicle driver is reminded that the vehicle has collision risk, the vehicle collision caused by improper operation of the driver is actively reduced, and the safety of vehicle driving is improved. Specifically, controlling the vehicle to stop traveling may refer to controlling the gear position of the vehicle to be placed in the P range.
Step S104: and when the starting signal of the vehicle is detected again, determining the current collision risk level of the vehicle according to the current gear, the vehicle speed and the distance of the vehicle.
When the system detects that the vehicle is started through manual control, the current collision risk level of the vehicle is automatically determined according to the current gear, the speed and the distance of the vehicle, and a corresponding control method is adopted according to different collision risk levels so as to achieve the purpose of accurate control.
Step S105: and reducing the vehicle speed of the vehicle to a preset vehicle speed corresponding to the collision risk grade according to the collision risk grade.
And controlling to reduce the running speed of the vehicle to a preset vehicle speed corresponding to each collision risk level according to different collision risk levels, wherein the preset vehicle speed can be zero or not, and the preset vehicle speed can be only required to ensure that the vehicle can not collide when running at the speed.
Based on the driving protection method, the following specific examples are provided in the present application, and on the premise of not conflicting with each other, each example can be arbitrarily combined to form another driving protection method.
In a possible implementation manner, referring to fig. 2, a flowchart of steps of the present application when determining a collision risk level currently faced by a vehicle according to a current gear, a current vehicle speed and a current distance of the vehicle is shown, and as shown in fig. 2, when determining a collision risk level currently faced by a vehicle according to a current gear, a current vehicle speed and a current distance of the vehicle, the following steps may be included:
step S1041: and obtaining the historical gear of the vehicle when the driving protection mode is triggered.
The obtained historical gear can represent the historical advancing direction of the vehicle, specific gear information is not required to be recorded, and only the driving direction of the vehicle represented by the historical gear needs to be obtained.
Step S1042: and under the condition that the traveling direction represented by the historical gear is consistent with the traveling direction represented by the current gear of the vehicle, determining the current collision risk level of the vehicle according to the current throttle opening value, the vehicle speed and the distance of the vehicle.
For example: when the driving protection mode is triggered, the gear of the vehicle is a forward gear, the current gear of the vehicle is also the forward gear, namely the vehicle still drives towards the same direction, the distance between the vehicle and an obstacle is reduced, the risk of vehicle collision still exists, and the system determines the current collision risk level of the vehicle according to the current throttle opening value, the vehicle speed and the distance of the vehicle.
Step S1043: and in the case that the traveling direction represented by the historical gear is inconsistent with the traveling direction represented by the current gear of the vehicle, the vehicle protection mode is released to allow the vehicle to normally travel.
For example: when the driving protection mode is triggered, the gear of the vehicle is a forward gear, the current gear of the vehicle is a reverse gear, namely the vehicle runs towards the opposite direction, the distance between the vehicle and the obstacle is increased, namely the distance between the vehicle and the obstacle is larger than the safe critical distance of the vehicle, the vehicle has no risk of collision temporarily, and then the system automatically releases the driving protection mode to allow the vehicle to run normally.
In a possible embodiment, when determining the collision risk level currently faced by the vehicle according to the current gear, the vehicle speed and the distance of the vehicle, the method further comprises the following steps:
step S1044: and when the distance between the obstacle and the vehicle is greater than a second preset distance threshold and smaller than the first preset distance threshold, determining that the current collision risk level of the vehicle is a low-risk collision level.
The second preset distance threshold value can be used for representing the distance between the vehicle and the obstacle to be collided, the second preset distance threshold value can be 100mm, when the distance between the obstacle and the vehicle is larger than the second preset distance threshold value and smaller than the first preset distance threshold value, a certain safety distance exists between the vehicle and the obstacle, collision cannot happen immediately, and therefore the current collision risk level of the vehicle is determined to be a low-risk collision level.
Step S1045: and when the distance between the obstacle and the vehicle is smaller than or equal to the second preset distance threshold value and the vehicle speed is larger than or equal to the preset speed threshold value, determining that the collision risk level is a high-risk collision level.
And when the distance between the obstacle and the vehicle is less than or equal to the second preset distance threshold value and the vehicle speed is greater than or equal to the preset speed threshold value, the vehicle and the obstacle are about to collide, and the vehicle continues to run at the same time, so that the collision risk level is determined to be a high-risk collision level.
The running speed of the vehicle is controlled to the corresponding preset vehicle speed by determining different risk collision grades, namely, the vehicle is controlled more accurately by adopting a control method which is adaptive to the situation at that time under different conditions.
In one possible embodiment, referring to fig. 3, a flowchart illustrating a first step of reducing a vehicle speed of a vehicle to a preset vehicle speed corresponding to a collision risk level according to the collision risk level is shown, and as shown in fig. 3, the step of reducing the vehicle speed of the vehicle to the preset vehicle speed corresponding to the collision risk level according to the collision risk level includes:
step S1051: and when the collision risk level is a low-risk collision level, controlling the throttle opening to be kept at a preset minimum opening, and reducing the vehicle speed of the vehicle to a preset vehicle speed threshold value.
When the collision risk level is a low-risk collision level, the throttle opening is controlled to be kept at a preset minimum throttle opening, the vehicle speed of the vehicle is reduced to a preset vehicle speed threshold, the preset minimum throttle opening can be zero, namely the driving force of the vehicle cannot be increased through the throttle opening in the driving process of the vehicle, the driving force of the vehicle is approximately zero, and the vehicle can only creep at a low speed.
Step S1052: when the collision risk level is a high-risk collision level, the vehicle is controlled to stop traveling so that the vehicle speed of the vehicle is zero.
When the collision risk level is a high-risk collision level, the vehicle is controlled to stop running so that the speed of the vehicle is zero, the problem of vehicle collision caused by misoperation of a driver is actively reduced, and the driving safety of the vehicle is improved.
In this embodiment, after reducing the vehicle speed of the vehicle to a preset vehicle speed corresponding to the collision risk level, the method further comprises the steps of:
step S106: if the current gear is detected to be converted into the target gear, the driving protection mode is exited to allow the vehicle to automatically move; and the vehicle traveling direction represented by the target gear is different from the vehicle traveling direction represented by the current gear.
When the vehicle is manually operated to a gear position which is different from the vehicle travelling direction represented by the current gear position, namely the vehicle travels in the opposite direction, the distance between the vehicle and an obstacle is increased, and the vehicle has no risk of collision temporarily, the system automatically exits the driving protection mode to allow the vehicle to normally travel.
In a possible embodiment, referring to fig. 4, a flowchart of a second step of reducing the vehicle speed of the vehicle to a preset vehicle speed corresponding to a collision risk level according to the collision risk level is shown, as shown in fig. 4, when the collision risk level is a low-risk collision level, the throttle opening is controlled to be kept at a preset minimum opening, and the vehicle speed of the vehicle is reduced to a preset vehicle speed threshold, and thus, the following steps can be further included:
s10511: outputting an alarm prompt;
the output alarm prompt is used for reminding a driver that the vehicle has a collision risk, plays a role in warning, reduces the problem of vehicle collision caused by improper operation of the driver, and improves the safety of vehicle driving.
In the present embodiment, the step of controlling the vehicle to stop traveling so that the vehicle speed of the vehicle becomes zero when the collision risk level is a high-risk collision level includes;
s10512: controlling a clutch of the vehicle to be automatically opened, and controlling a gear of the vehicle to return to a P gear so as to control the vehicle to stop running; and outputting an alarm prompt.
The method of controlling the vehicle to stop traveling may be: controlling a clutch of the vehicle to be automatically opened, and controlling the gear of the vehicle to return to a P gear; or limiting engine torque; the specific method is not limited herein; meanwhile, the system outputs an alarm prompt to remind a driver of the risk of collision of the vehicle, so that the warning effect is achieved, the problem of vehicle collision caused by improper operation of the driver is reduced, and the safety of vehicle driving is improved.
Example two
Based on the same inventive concept, another embodiment of the present application provides a driving protection device, where the device is configured to execute the driving protection method provided in the first embodiment of the present application; referring to fig. 5, a structural block diagram of the driving protection device of the present application is shown, and as shown in fig. 5, the driving protection device includes:
the first obtaining module 11: the system comprises a distance acquisition module, a distance acquisition module and a control module, wherein the distance acquisition module is used for acquiring the distance from an obstacle to a vehicle when the obstacle is detected to exist in a preset distance range; the distance between the obstacle and the vehicle can be the distance between the obstacle and the front of the vehicle or the distance between the obstacle and the tail of the vehicle.
The first determination module 12: and the driving protection mode is triggered according to the condition that the distance is smaller than a first preset distance threshold value and the accelerator opening of the vehicle is larger than a preset opening threshold value.
The first preset distance threshold is used for representing that the distance is a critical distance for vehicle safety, the distance smaller than the distance represents that the automobile has the risk of collision, and the first preset distance threshold can be 350 mm; the preset accelerator opening threshold is used for representing the intention of starting the automobile, and can be 5%; when the distance between the obstacle and the vehicle is smaller than the safety critical distance of the vehicle and the vehicle has the intention of starting, the system judges that the vehicle has the risk of collision and automatically triggers the driving protection mode.
The first control module 13: the vehicle is controlled to stop running according to the response to the driving protection mode.
According to the driving protection mode, the first control module 13 controls the vehicle to stop running, so that a vehicle driver is reminded that the vehicle is at risk of collision, the vehicle collision caused by misoperation of the driver is actively reduced, and the driving safety of the vehicle is improved.
The second determination module 14: and the collision risk level currently faced by the vehicle is determined according to the current gear, the vehicle speed and the distance of the vehicle when the starting signal of the vehicle is detected again.
When the second determining module 14 detects that the vehicle is started through manual control, the current collision risk level of the vehicle is automatically determined according to the current gear, speed and distance of the vehicle, and a corresponding control method is adopted according to different collision risk levels, so that the purpose of accurate control is achieved.
The second control module 15: and controlling to reduce the vehicle speed of the vehicle to a preset vehicle speed corresponding to the collision risk level according to the collision risk level.
The second control module 15 controls to reduce the running speed of the vehicle to a preset vehicle speed corresponding to each collision risk level according to different collision risk levels, the preset vehicle speed may be zero or not, and the preset vehicle speed is only required to ensure that the vehicle does not collide when running at the speed.
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.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
EXAMPLE III
The embodiment of the present application further provides an automobile, where the automobile may include a driving protection device provided in the second embodiment of the present application, and the driving protection device is configured to execute the driving protection method provided in the first embodiment of the present application.
According to the automobile provided by the application, the distance between the obstacle and the automobile and the opening degree value of the accelerator of the automobile are detected, when the distance between the obstacle and the automobile is smaller than the safety critical distance of the automobile and the automobile has the intention of starting, the system judges that the automobile has the risk of collision, the driving protection mode is automatically triggered, and the automobile is controlled to stop moving; when the vehicle is started through manual control, the collision risk level of the vehicle is automatically determined according to the current gear, the vehicle speed and the distance of the vehicle, the running speed of the vehicle is controlled and reduced according to different collision risk levels, and the vehicle is guaranteed not to collide when running at the speed, so that the problem of vehicle collision caused by improper operation of a driver is solved, and the safety performance of vehicle driving is improved.
It should be understood that while the present specification has described preferred embodiments of the present application, additional variations and modifications in those 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 such alterations and modifications as fall within the true scope of the embodiments of the application.
The driving protection method provided by the present application is introduced in detail, and a specific example is applied in the description to explain the principle and the implementation of the present application, and the description of the above example is only used to help understanding the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, 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 application.

Claims (9)

1. A driving protection method is characterized by comprising the following steps:
when an obstacle is detected to exist in a preset distance range, the distance between the obstacle and a vehicle is acquired;
triggering a driving protection mode under the condition that the distance is smaller than a first preset distance threshold value and the accelerator opening of the vehicle is larger than a preset opening threshold value;
controlling the vehicle to stop traveling in response to the driving protection mode;
when a starting signal of the vehicle is detected again, determining the current collision risk level of the vehicle according to the current gear, the current speed and the current distance of the vehicle;
and reducing the speed of the vehicle to a preset speed corresponding to the collision risk grade according to the collision risk grade.
2. The driving protection method according to claim 1, wherein determining the current collision risk level of the vehicle according to the current gear, the vehicle speed and the distance comprises:
obtaining a historical gear of the vehicle when the driving protection mode is triggered;
under the condition that the traveling direction represented by the historical gear is consistent with the traveling direction represented by the current gear of the vehicle, determining the current collision risk level of the vehicle according to the current throttle opening value, the current vehicle speed and the current distance of the vehicle;
and under the condition that the traveling direction represented by the historical gear is inconsistent with the traveling direction represented by the current gear of the vehicle, the driving protection mode is released to allow the vehicle to normally travel.
3. The driving protection method according to claim 1, wherein determining the current collision risk level of the vehicle according to the current throttle opening value of the vehicle, the vehicle speed and the distance comprises:
when the distance between the obstacle and the vehicle is larger than a second preset distance threshold and smaller than a first preset distance threshold, determining that the current collision risk level of the vehicle is a low-risk collision level;
and when the distance between the obstacle and the vehicle is smaller than or equal to the second preset distance threshold value and the vehicle speed is larger than or equal to the preset speed threshold value, determining that the collision risk level is a high-risk collision level.
4. The driving protection method according to claim 2, wherein reducing the vehicle speed of the vehicle to a preset vehicle speed corresponding to the collision risk level according to the collision risk level comprises:
when the collision risk level is a low-risk collision level, controlling the opening degree of the accelerator to be kept at a preset minimum opening degree, and reducing the speed of the vehicle to a preset speed threshold value;
and when the collision risk level is a high-risk collision level, controlling the vehicle to stop running so that the speed of the vehicle is zero.
5. The driving protection method according to claim 1, characterized in that after reducing the vehicle speed of the vehicle to a preset vehicle speed corresponding to the collision risk level, the method further comprises:
if the current gear is detected to be switched to the target gear, the driving protection mode is exited to allow the vehicle to automatically move;
wherein the vehicle travel direction characterized by the target gear is different from the vehicle travel direction characterized by the current gear.
6. The driving protection method according to claim 4, wherein when the collision risk level is a low risk collision level, the method further comprises, while controlling the accelerator opening to be kept at a preset minimum opening and reducing the vehicle speed of the vehicle to a preset vehicle speed threshold value: and outputting an alarm prompt.
7. The driving protection method according to claim 4, wherein controlling the vehicle to stop traveling so that the vehicle speed of the vehicle is zero when the collision risk level is a high-risk collision level includes:
controlling a clutch of the vehicle to be automatically opened, and controlling the gear of the vehicle to return to a P gear so as to control the vehicle to stop running;
and outputting an alarm prompt.
8. A driving protection device, comprising:
a first obtaining module: the system comprises a distance acquisition module, a distance acquisition module and a control module, wherein the distance acquisition module is used for acquiring the distance from an obstacle to a vehicle when the obstacle is detected to exist in a preset distance range;
a first determination module: the driving protection mode is triggered according to the condition that the distance is smaller than a first preset distance threshold value and the accelerator opening of the vehicle is larger than a preset opening threshold value;
a first control module: the vehicle is controlled to stop running according to the response to the driving protection mode;
a second determination module: when the starting signal of the vehicle is detected again, determining the current collision risk level of the vehicle according to the current gear, the current speed and the current distance of the vehicle;
a second control module: and controlling to reduce the vehicle speed of the vehicle to a preset vehicle speed corresponding to the collision risk level according to the collision risk level.
9. A vehicle, characterized in that a driving protection device according to claim 8 is provided, which is adapted to perform the driving protection method according to any one of claims 1-7.
CN202011372345.1A 2020-11-30 2020-11-30 Driving protection method and device and vehicle Pending CN114572200A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024046343A1 (en) * 2022-08-31 2024-03-07 奇瑞汽车股份有限公司 Parameter setting method and apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024046343A1 (en) * 2022-08-31 2024-03-07 奇瑞汽车股份有限公司 Parameter setting method and apparatus

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