CN114475503A - Vehicle door unlocking control method and device - Google Patents
Vehicle door unlocking control method and device Download PDFInfo
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- CN114475503A CN114475503A CN202210007765.2A CN202210007765A CN114475503A CN 114475503 A CN114475503 A CN 114475503A CN 202210007765 A CN202210007765 A CN 202210007765A CN 114475503 A CN114475503 A CN 114475503A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000001133 acceleration Effects 0.000 claims abstract description 251
- 238000012544 monitoring process Methods 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 12
- 230000000977 initiatory effect Effects 0.000 claims 1
- 230000002427 irreversible effect Effects 0.000 description 38
- 230000004913 activation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
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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
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
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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
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0136—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to actual contact with an obstacle, e.g. to vehicle deformation, bumper displacement or bumper velocity relative to the vehicle
-
- 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
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R2021/01204—Actuation parameters of safety arrangents
- B60R2021/01252—Devices other than bags
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Abstract
The invention belongs to the technical field of automobile control, and discloses a method and a device for controlling unlocking of a vehicle door. According to the invention, when the target vehicle is detected to be collided, the collision acceleration of the target vehicle is obtained, when the collision acceleration meets the starting condition of the preset safety strategy, the preset safety strategy is started, when the collision acceleration is lower than the unlocking acceleration threshold, the duration that the collision acceleration is lower than the unlocking acceleration threshold is monitored, and when the duration exceeds the preset time threshold, the door of the target vehicle is controlled to be unlocked. According to the invention, the door unlocking is controlled when the current speed is lower than the unlocking acceleration threshold value by judging whether the collision acceleration of the target vehicle is lower than the unlocking acceleration threshold value, so that the door unlocking control on the impacted vehicle is safely and accurately realized, the condition that passengers are in danger due to the fact that the door is unlocked in advance is effectively avoided, and the safety performance of the vehicle is improved.
Description
Technical Field
The invention relates to the technical field of automobile control, in particular to a method and a device for controlling unlocking of a vehicle door.
Background
With the development of science and technology and the progress of society, automobiles become indispensable vehicles in people's lives, so that the safety problem of automobiles is also an important factor which cannot be ignored. When the automobile is impacted, due to the fact that factors such as the size and the structure of the automobile, the actual impact type and the impact speed are different, the door on the side with serious impact can already receive an irreversible restraint system impact signal to unlock the door when the impact is not worse, and therefore the door of the automobile can already be unlocked when the impact is not finished. At present, when an automobile is impacted, the automobile door can not be safely and accurately controlled to be unlocked, so that the automobile door is opened in advance when the impact is not finished, and passengers in the automobile are seriously injured.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a vehicle door unlocking control method and device, and aims to solve the technical problem that the prior art cannot safely and accurately unlock and control a vehicle door when a vehicle is impacted.
In order to achieve the above object, the present invention provides a vehicle door unlocking control method, including the steps of:
when a target vehicle is detected to be collided, acquiring collision acceleration of the target vehicle;
when the collision acceleration meets the starting condition of a preset safety strategy, starting the preset safety strategy;
when the collision acceleration is lower than an unlocking acceleration threshold value, monitoring the duration of the collision acceleration lower than the unlocking acceleration threshold value;
and controlling the door of the target vehicle to be unlocked when the duration exceeds a preset time threshold.
Optionally, when the collision acceleration meets a starting condition of a preset safety policy, starting the preset safety policy includes:
acquiring a preset safety strategy of the target vehicle and starting conditions corresponding to the safety strategy;
determining a collision acceleration threshold value of the target vehicle according to the starting condition;
and when the collision acceleration exceeds the collision acceleration threshold value, starting the preset safety strategy.
Optionally, the starting the preset safety strategy when the collision acceleration exceeds the collision acceleration threshold includes:
and when the collision acceleration exceeds the collision acceleration threshold value, locking a safety belt, unfolding an air bag, and controlling the engine of the target vehicle to stop running.
Optionally, after controlling the unlocking of the door of the target vehicle when the duration exceeds a preset time threshold, the method further includes:
and controlling the safety belt of the target vehicle to unlock and releasing the safety air bag.
Optionally, the acquiring collision acceleration of the target vehicle when it is detected that the target vehicle is collided includes:
when a target vehicle is detected to be collided, acquiring a door locking state of the target vehicle;
and when the door of the target vehicle is unlocked, controlling the unlocking of the unlocked door according to the door locking state, and acquiring the collision acceleration of the target vehicle.
In addition, in order to achieve the above object, the present invention also provides a door unlocking control device, including:
the collision detection module is used for acquiring collision acceleration of a target vehicle when the target vehicle is detected to be collided;
the safety strategy module is used for starting a preset safety strategy when the collision acceleration meets the starting condition of the preset safety strategy;
the duration monitoring module is used for monitoring the duration of the collision acceleration lower than the unlocking acceleration threshold when the collision acceleration is lower than the unlocking acceleration threshold;
and the vehicle door unlocking module is used for controlling the unlocking of the vehicle door of the target vehicle when the duration exceeds a preset time threshold.
Optionally, the safety strategy module is further configured to obtain a preset safety strategy of the target vehicle and a starting condition corresponding to the safety strategy, determine a collision acceleration threshold of the target vehicle according to the starting condition, and start the preset safety strategy when the collision acceleration exceeds the collision acceleration threshold.
Optionally, the safety strategy module is further configured to lock a seat belt, deploy an airbag, and control an engine of the target vehicle to stop operating when the crash acceleration exceeds the crash acceleration threshold.
Optionally, the safety strategy module is further configured to control the unlocking of a seat belt of the target vehicle and release an airbag.
Optionally, the collision detection module is further configured to, when it is detected that the target vehicle has a collision, acquire a door-locked state of the target vehicle, and when the door of the target vehicle is not locked, control the unlocked door to be locked according to the door-locked state, and acquire a collision acceleration of the target vehicle.
According to the method, when the target vehicle is detected to be collided, the collision acceleration of the target vehicle is obtained, when the collision acceleration meets the starting condition of a preset safety strategy, the preset safety strategy is started, when the collision acceleration is lower than an unlocking acceleration threshold value, the duration time that the collision acceleration is lower than the unlocking acceleration threshold value is monitored, and when the duration time exceeds a preset time threshold value, the door of the target vehicle is controlled to be unlocked. According to the invention, the door unlocking is controlled when the current speed is lower than the unlocking acceleration threshold value by judging whether the collision acceleration of the target vehicle is lower than the unlocking acceleration threshold value, so that the door unlocking control on the impacted vehicle is safely and accurately realized, the condition that passengers are in danger due to the fact that the door is unlocked in advance is effectively avoided, and the safety performance of the vehicle is improved.
Drawings
FIG. 1 is a schematic flow chart of a first embodiment of a vehicle door unlock control method of the present invention;
FIG. 2 is a schematic flow chart of a vehicle door unlocking control method according to a second embodiment of the present invention;
FIG. 3 is a schematic flow chart of a vehicle door unlocking control method according to a third embodiment of the present invention;
fig. 4 is a block diagram showing the structure of the first embodiment of the door unlocking control apparatus of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
An embodiment of the invention provides a vehicle door unlocking control method, and referring to fig. 1, fig. 1 is a schematic flow diagram of a first embodiment of the vehicle door unlocking control method.
In this embodiment, the vehicle door unlocking control method includes the steps of:
step S10: upon detecting that a target vehicle is collided, collision acceleration of the target vehicle is acquired.
It should be understood that the executing body of the method of the present embodiment may be a door unlocking control device with data processing, network communication and program running functions, such as a central controller of an automobile, or other devices or devices capable of implementing the same or similar functions, and will be collectively described below as an unlocking control device.
It should be noted that the target vehicle may be a vehicle equipped with a safety restraint system, for example: the automobile such as the piston internal combustion engine automobile, the electric automobile or the hybrid electric automobile can also be other types of automobiles. The collision acceleration may be the acceleration of the vehicle body subjected to the collision impact force, which is acquired by a safety restraint system controller inside the target vehicle through an internally integrated or externally arranged sensor when the target vehicle is collided, and the magnitude of the collision acceleration may be 10g, 15g, 20g or the like, wherein g is the gravity acceleration.
In specific implementation, when the unlocking control device detects that the target vehicle is collided, the unlocking control device acquires acceleration of collision impact force on the vehicle body through a sensor which is internally integrated or externally arranged.
For example, when the unlocking control device detects that the target vehicle is collided, the acceleration of the vehicle body, which is acquired by the unlocking control device through an internally integrated or externally arranged sensor, to be collided with impact force is a, when the collision acceleration exceeds B, safety measures need to be taken to protect passengers in the vehicle, and if a is larger than B, the safety measures need to be taken to protect the passengers in the vehicle.
Step S20: and starting the preset safety strategy when the collision acceleration meets the starting condition of the preset safety strategy.
It should be noted that the preset safety strategy may be a safety protection measure that is activated when the target vehicle is involved in a dangerous collision, and the preset safety strategy may be a safety protection strategy in an irreversible restraint system, wherein the irreversible restraint system may be a safety restraint system that protects passengers in the vehicle when the vehicle is involved in a dangerous collision. The preset safety strategy may be safety measures such as deploying an airbag or locking a seat belt, or other safety strategies, and this embodiment is not limited. The activation condition may be a condition that determines whether the irreversible restraint system safety strategy needs to be activated, based on the received crash acceleration of the target vehicle.
It should be understood that when the target vehicle is collided, the collision acceleration of the target vehicle is converted according to the speed of the target vehicle, the collided position (such as the position of a vehicle frontal collision, a vehicle side collision or a vehicle angle collision) and the collision type (such as the type of a rigid wall collision, a column collision, an angle collision or an obstacle avoidance collision), and whether the preset safety strategy in the irreversible restraint system needs to be started or not is judged according to the acceleration of the target vehicle so as to protect the passengers in the vehicle.
For example: when the speed of the target vehicle is lower than 15km/h, the target vehicle is collided by the front rigid wall, and the irreversible restraint system is not started; when the speed of the target vehicle is higher than 25km/h, the target vehicle is collided by the front rigid wall, and the irreversible restraint system is started; the target vehicle speed is collided by the front rigid wall when the speed is 15km/h to 25km/h, and the irreversible restraint system can be selectively started according to the actual collision scene; when the speed of the target vehicle is 32km/h, the target vehicle is collided by the front surface column, and the irreversible constraint system is started; when the target vehicle speed is at 32km/h, the target vehicle is collided by an angle of 30 degrees at the left, and the irreversible constraint system is started; when the speed of the target vehicle is 40km/h, the front side of the target vehicle penetrates into the tail part of the truck, and the irreversible constraint system is started; when the speed of the target vehicle is lower than 15km/h, the target vehicle is collided by the side deformable obstacle avoidance, and the irreversible constraint system is not started; and when the speed of the target vehicle is higher than 25km/h, the target vehicle is collided by the side deformable obstacle avoidance, and the irreversible restraint system is started.
In a specific implementation, the unlocking control device determines that the target vehicle is in a dangerous collision state when the collision acceleration meets a safety protection strategy starting condition in an irreversible restraint system of the target vehicle, and deploys an air bag and locks a safety belt to protect the safety of a passenger in the vehicle according to the safety protection strategy in the irreversible restraint system.
For example, the target vehicle is subjected to a frontal column collision at a speed of 32km/h, the unlock control apparatus determines that the collision acceleration of the target vehicle satisfies a safety protection strategy actuation condition in the irreversible restraint system of the target vehicle, and deploys an airbag and locks a seat belt to protect the safety of an occupant in the vehicle according to a preset safety strategy in the irreversible restraint system.
Step S30: when the collision acceleration is lower than an unlocking acceleration threshold value, monitoring the duration of the collision acceleration lower than the unlocking acceleration threshold value.
Note that the unlocking acceleration threshold may be a threshold for determining whether or not the target vehicle is in a safe state based on the collision acceleration, and the unlocking acceleration threshold may be 10g, 8g, 5g, or the like. The duration may be a duration that the target vehicle is in a safe state, the duration in the safe state may be a duration that the collision acceleration is maintained below the unlocking acceleration threshold, the unlocking control device starts recording the duration after the collision acceleration is lower than the unlocking acceleration threshold, and the unlocking control device restarts monitoring if the collision acceleration is higher than the unlocking acceleration threshold.
It should be appreciated that a secondary impact may occur due to the target vehicle unlocking the doors when the crash acceleration is below the unlock acceleration threshold. In order to avoid the target vehicle being impacted again after unlocking the doors, it is therefore necessary to monitor the duration of the impact acceleration below the unlocking acceleration.
In the specific implementation, the unlocking control device judges whether the target vehicle is in a safe state according to the collision acceleration of the target vehicle, judges that the target vehicle is in the safe state when the collision acceleration is lower than the unlocking acceleration threshold, monitors the duration of the collision acceleration lower than the unlocking acceleration, and determines the duration of the target vehicle in the safe state according to the duration.
For example, the unlocking acceleration threshold is 10g, the collision acceleration of the target vehicle acquired by the unlocking control device is 9g, and at this time, the collision acceleration is lower than the unlocking acceleration threshold, the target vehicle is determined to be in a safe state to unlock the control device, and the duration of the collision acceleration lower than the unlocking acceleration threshold is monitored. If the duration in which the collision acceleration of the target vehicle is lower than the unlock acceleration threshold value 10g exceeds 50ms, it is determined that the target vehicle is not subjected to a secondary collision.
Step S40: and controlling the door of the target vehicle to be unlocked when the duration exceeds a preset time threshold.
It should be noted that the preset time threshold may be a time threshold for detecting whether the collision acceleration of the target vehicle is always in the safe unlock state. The preset time threshold may be a duration of 30ms, 35ms, or 40ms, or other durations, which is not limited in this embodiment.
It should be understood that, in order to prevent the target vehicle from having a collision accident again after being collided, it is necessary to monitor whether the duration that the collision acceleration of the target vehicle is lower than the unlocking acceleration threshold exceeds a preset time threshold, and if the duration exceeds the preset time threshold, it is determined that the target vehicle is in a safe state, and the door of the target vehicle is controlled to be unlocked; and if the duration does not exceed the preset time threshold, judging that the target vehicle is likely to be subjected to secondary collision, and continuously monitoring the collision acceleration of the target vehicle.
In a specific implementation, for example, the preset time threshold is 30ms, the unlocking acceleration threshold is 10g, and when the unlocking control device monitors that the collision acceleration of the target vehicle is lower than 10g, the duration of the collision acceleration lower than the unlocking acceleration threshold is monitored. When the duration exceeds a preset time threshold value for 30ms, determining that the target vehicle is in a safe state at the moment, and controlling the door of the target vehicle to be unlocked; and if the collision acceleration rises to 12g when the duration of the collision acceleration which is lower than the unlocking acceleration threshold reaches 20ms, judging that the collision acceleration exceeds the unlocking acceleration threshold, possibly causing the target vehicle to be subjected to secondary collision, and continuously monitoring the collision acceleration of the target vehicle.
Further, after the step S40, in order to ensure that the driver or the passenger can quickly escape from the vehicle after the door of the target vehicle is unlocked, the method further includes:
step S401: and controlling the safety belt of the target vehicle to unlock and releasing the safety air bag.
It should be understood that, in order to ensure that the driver or the passenger can rapidly escape from the vehicle after the doors are unlocked, it is necessary to timely turn off the safety systems deployed by the preset safety strategies, and thus, after the doors of the target vehicle are unlocked, control the locked seat belts of the target vehicle to be unlocked and release all the airbags of the target vehicle.
The embodiment acquires the collision acceleration of the target vehicle when detecting that the target vehicle is collided, and starts the preset safety strategy when the collision acceleration meets the starting condition of the preset safety strategy, monitors that the collision acceleration is lower than the duration of the unlocking acceleration threshold when the collision acceleration is lower than the unlocking acceleration threshold, and controls the unlocking of the door of the target vehicle when the duration exceeds the preset time threshold. According to the invention, the door unlocking is controlled when the current speed is lower than the unlocking acceleration threshold value by judging whether the collision acceleration of the target vehicle is lower than the unlocking acceleration threshold value, so that the door unlocking control on the impacted vehicle is safely and accurately realized, the condition that passengers are in danger due to the fact that the door is unlocked in advance is effectively avoided, and the safety performance of the vehicle is improved.
Referring to fig. 2, fig. 2 is a flowchart illustrating a vehicle door unlocking control method according to a second embodiment of the present invention.
Based on the first embodiment described above, in the present embodiment, the step S20 includes:
step S201: and acquiring a preset safety strategy of the target vehicle and starting conditions corresponding to the safety strategy.
It should be noted that the preset safety strategy may be a safety protection strategy in an irreversible restraint system of the target vehicle, and the preset safety strategy may be safety measures such as deploying an airbag or locking a seat belt, or may be other safety strategies. The activation condition may be a condition that determines whether the irreversible restraint system safety strategy needs to be activated, based on the received crash acceleration of the target vehicle.
Step S202: determining a collision acceleration threshold of the target vehicle according to the starting condition.
It will be appreciated that in order to prevent the driver of the target vehicle from being hindered from normal driving operation by the preset safety strategy, it is therefore desirable to avoid the preset safety measures from being activated when the collision is not severe.
It should be noted that the collision acceleration threshold may be a threshold for determining whether the collision acceleration of the target vehicle reaches a condition for starting a preset safety strategy, and the collision acceleration threshold may be 15g, 20g, or 25g, or may be another value. The collision acceleration threshold is specifically set according to the model of the target vehicle, and the collision acceleration threshold differs for different vehicle models, for example, the larger the weight of the vehicle, the larger the collision acceleration threshold of the vehicle, and the embodiment is not limited.
In a specific implementation, for example, the unlocking control device determines that the collision acceleration threshold is 15g according to the model of the target vehicle, if the collision acceleration of the target vehicle is 16g, the collision acceleration exceeds the collision acceleration threshold, and the unlocking control device needs to start a preset safety strategy to ensure the safety of passengers on the vehicle.
Step S203: and when the collision acceleration exceeds the collision acceleration threshold value, starting the preset safety strategy.
It should be understood that when the target vehicle is collided, the collision acceleration of the target vehicle is converted according to the speed of the target vehicle, the collided position (such as the position of a vehicle frontal collision, a vehicle side collision or a vehicle angle collision) and the collision type (such as the type of a rigid wall collision, a column collision, an angle collision or an obstacle avoidance collision), whether the collision acceleration threshold value is exceeded is judged according to the acceleration of the target vehicle, and whether the protection of passengers in the vehicle needs to be carried out by starting a preset safety strategy in the irreversible restraint system is further determined according to the judgment result.
For example: when the speed of the target vehicle is lower than 15km/h, the target vehicle is collided by the front rigid wall, and a preset safety strategy is not started; when the speed of the target vehicle is higher than 25km/h, the target vehicle is collided by the front rigid wall, and a preset safety strategy is started; the target vehicle is collided by the front rigid wall when the speed is 15km/h to 25km/h, and the preset safety strategy can be selectively started according to the actual collision scene; when the target vehicle speed is 32km/h, the target vehicle is collided by the front column, and a preset safety strategy is started; when the target vehicle speed is at 32km/h, the target vehicle is collided by an angle of 30 degrees at the left, and a preset safety strategy is started; when the speed of the target vehicle is 40km/h, the front side of the target vehicle penetrates into the tail part of the truck, and a preset safety strategy is started; when the speed of the target vehicle is lower than 15km/h, the target vehicle is collided by the side deformable obstacle avoidance, and a preset safety strategy is not started; and when the speed of the target vehicle is higher than 25km/h, the target vehicle is collided by the side deformable obstacle avoidance, and a preset safety strategy is started.
In a specific implementation, for example, the collision acceleration threshold is 20g, and the target vehicle speed is 32km/h when a frontal column collision is received, at which time the unlock control apparatus detects that the collision acceleration of the target vehicle is 21 g. And the collision acceleration exceeds a collision acceleration threshold value, so that the collision acceleration is judged to meet the starting condition of a preset safety strategy, and an air bag is unfolded and a safety belt is locked to protect the safety of passengers in the automobile according to the preset safety strategy in the irreversible restraint system.
Further, in order to improve the safety performance of the target vehicle when the target vehicle is in a severe collision, the step S203 includes:
step S2031: and when the collision acceleration exceeds the collision acceleration threshold value, locking a safety belt, unfolding an air bag, and controlling the engine of the target vehicle to stop running.
It should be understood that, in order to avoid a dangerous accident such as further runaway or a leakage fire after a collision of the target vehicle, the unlocking control apparatus needs to control the engine of the target vehicle to stop operating.
In a specific implementation, for example, the collision acceleration threshold is 25g, and the target vehicle speed is 40km/h when a side pillar collision is received, while the unlock control apparatus detects that the collision acceleration of the target vehicle is 27 g. And the collision acceleration exceeds a collision acceleration threshold value, so that the collision acceleration is judged to meet the starting condition of a preset safety strategy, an air bag is unfolded according to the preset safety strategy in the irreversible restraint system, a safety belt is locked to protect the safety of passengers in the vehicle, and the engine of the target vehicle is controlled to stop running so as to prevent the electric leakage or fire of the engine.
In the embodiment, a preset safety strategy of the target vehicle and a starting condition corresponding to the safety strategy are obtained, a collision acceleration threshold of the target vehicle is determined according to the starting condition, and the preset safety strategy is started when the collision acceleration exceeds the collision acceleration threshold. The starting of the preset safety strategy is controlled by judging whether the collision acceleration exceeds the collision acceleration threshold value, so that the influence on the driving operation of a driver caused by the accidental starting of the preset safety strategy when the target vehicle is in a small collision is avoided, and the safety performance of vehicle driving is improved.
Referring to fig. 3, fig. 3 is a schematic flow chart of a vehicle door unlocking control method according to a third embodiment of the present invention.
Based on the first embodiment described above, in the present embodiment, the step S10 includes:
step S101: when the target vehicle is detected to be collided, the door locking state of the target vehicle is acquired.
It should be understood that, in order to avoid accidental opening of the door when the target door is not locked to cause a collision, it is necessary to acquire a door lock state of the target vehicle, determine whether each door of the target vehicle is locked according to the door lock state, and control locking of the door if there is an unlocked door.
The door-locked state may be a state of whether or not each door of the target vehicle is locked, and for example, if the target vehicle has 4 doors, and 3 doors of the 4 doors are locked, the door-locked state is 3/4 doors.
In a specific implementation, for example, the target vehicle has 4 doors, of which 1 door is locked. The unlock control apparatus acquires that the door lock state of the target vehicle is 1/4 door lock when detecting that the target vehicle has collided.
Step S102: and when the door of the target vehicle is unlocked, controlling the unlocking of the unlocked door according to the door locking state, and acquiring the collision acceleration of the target vehicle.
It should be understood that, in order to avoid accidental opening of the door when the target door is not locked to cause a collision, it is necessary to acquire a door lock state of the target vehicle, determine whether each door of the target vehicle is locked according to the door lock state, and control locking of the door if there is an unlocked door.
In a specific implementation, for example, the target vehicle has 4 doors, which are door a, door B, door C, and door D, respectively, wherein none of door B, door C, and door D are locked. The unlock control apparatus acquires that the door lock state of the target vehicle is 1/4 door lock when detecting that the target vehicle has collided. The unlock control apparatus determines that the door B, the door C, and the door D are not locked according to the door-locked state, and thus controls the unlocking of the door B, the door C, and the door D that are not locked according to the door-locked state, and acquires the collision acceleration of the target vehicle.
Referring to fig. 4, fig. 4 is a block diagram showing a structure of a first embodiment of a vehicle door unlocking control apparatus according to the present invention.
As shown in fig. 4, a vehicle door unlocking control apparatus according to an embodiment of the present invention includes:
the collision detection module is used for acquiring collision acceleration of the target vehicle when the target vehicle is detected to be collided.
It should be noted that the target vehicle may be a vehicle equipped with a safety restraint system, for example: the automobile such as the piston internal combustion engine automobile, the electric automobile or the hybrid electric automobile can also be other types of automobiles. The collision acceleration may be the acceleration of the vehicle body subjected to the collision impact force, which is acquired by the collision detection module through an internally integrated or externally arranged sensor when the target vehicle is collided, and the magnitude of the collision acceleration may be 10g, 15g, 20g or the like, wherein g is the gravity acceleration.
In a specific implementation, when the collision detection module detects that the target vehicle is collided, the collision detection module acquires the acceleration of the impact force of the collision on the vehicle body through a sensor which is internally integrated or externally arranged.
For example, when the collision detection module detects that the target vehicle is collided, the collision detection module acquires the acceleration of the impact force of the collision on the vehicle body through a sensor integrated inside or arranged outside, the acceleration of the collision is A, and when the collision acceleration exceeds B, safety measures need to be taken to protect passengers in the vehicle, and if A is larger than B, the safety measures need to be taken to protect the passengers in the vehicle.
And the safety strategy module is used for starting the preset safety strategy when the collision acceleration meets the starting condition of the preset safety strategy.
It should be noted that the preset safety strategy may be a safety protection measure that is activated when the target vehicle is involved in a dangerous collision, and the preset safety strategy may be a safety protection strategy in an irreversible restraint system, wherein the irreversible restraint system may be a safety restraint system that protects passengers in the vehicle when the vehicle is involved in a dangerous collision. The preset safety strategy may be safety measures such as deploying an airbag or locking a seat belt, or other safety strategies, and this embodiment is not limited. The activation condition may be a condition that determines whether the irreversible restraint system safety strategy needs to be activated, based on the received crash acceleration of the target vehicle.
It should be understood that the safety strategy module converts the speed, the collided position (such as the position of a front collision, a side collision or an angle collision of the vehicle) and the collision type (such as the type of a rigid wall collision, a column collision, an angle collision or an obstacle avoidance collision) of the target vehicle into the collision acceleration of the target vehicle when the target vehicle is collided, and then judges whether the preset safety strategy in the irreversible restraint system needs to be started to protect the passengers in the vehicle according to the acceleration of the target vehicle.
For example: when the speed of the target vehicle is lower than 15km/h, the target vehicle is collided by the front rigid wall, and the irreversible restraint system is not started; when the speed of the target vehicle is higher than 25km/h, the target vehicle is collided by the front rigid wall, and the irreversible restraint system is started; the target vehicle speed is collided by the front rigid wall when the speed is 15km/h to 25km/h, and the irreversible restraint system can be selectively started according to the actual collision scene; when the speed of the target vehicle is 32km/h, the target vehicle is collided by the front surface column, and the irreversible constraint system is started; when the target vehicle speed is at 32km/h, the target vehicle is collided by an angle of 30 degrees at the left, and the irreversible constraint system is started; when the speed of the target vehicle is 40km/h, the front side of the target vehicle penetrates into the tail part of the truck, and the irreversible constraint system is started; when the speed of the target vehicle is lower than 15km/h, the target vehicle is collided by the side deformable obstacle avoidance, and the irreversible constraint system is not started; and when the speed of the target vehicle is higher than 25km/h, the target vehicle is collided by the side deformable obstacle avoidance, and the irreversible restraint system is started.
In a specific implementation, the safety strategy module determines that the target vehicle is in a dangerous collision state when the collision acceleration meets a safety protection strategy starting condition in an irreversible restraint system of the target vehicle, and deploys an air bag and locks a safety belt to protect the safety of a passenger in the vehicle according to the safety protection strategy in the irreversible restraint system.
For example, when the target vehicle is subjected to a frontal column collision at a speed of 32km/h, the safety strategy module determines that the collision acceleration of the target vehicle meets the starting condition of the safety protection strategy in the irreversible restraint system of the target vehicle, and deploys the safety airbag and locks the safety belt to protect the safety of the passenger in the vehicle according to the preset safety strategy in the irreversible restraint system.
And the duration monitoring module is used for monitoring the duration of the collision acceleration lower than the unlocking acceleration threshold when the collision acceleration is lower than the unlocking acceleration threshold.
Note that the unlocking acceleration threshold may be a threshold for determining whether or not the target vehicle is in a safe state based on the collision acceleration, and the unlocking acceleration threshold may be 10g, 8g, 5g, or the like. The duration time can be the time length of the target vehicle in the safe state, the time length of the safe state can be the time length of the collision acceleration maintained below the unlocking acceleration threshold, the duration time monitoring module starts to record the duration time after the collision acceleration is lower than the unlocking acceleration threshold, and the duration time monitoring module starts to monitor again after the collision acceleration is higher than the unlocking acceleration threshold.
It should be appreciated that a secondary impact may occur due to the target vehicle unlocking the doors when the crash acceleration is below the unlock acceleration threshold. In order to avoid the target vehicle being impacted again after unlocking the doors, it is therefore necessary to monitor the duration of the impact acceleration below the unlocking acceleration.
In specific implementation, the duration monitoring module judges whether the target vehicle is in a safe state according to the collision acceleration of the target vehicle, judges that the target vehicle is in the safe state when the collision acceleration is lower than an unlocking acceleration threshold, monitors the duration of the collision acceleration lower than the unlocking acceleration, and determines the duration of the target vehicle in the safe state according to the duration.
For example, the unlocking acceleration threshold is 10g, the collision acceleration of the target vehicle acquired by the time length monitoring module is 9g, and at this time, the collision acceleration is lower than the unlocking acceleration threshold, the time length monitoring module judges that the target vehicle is in a safe state, and monitors the duration of the collision acceleration lower than the unlocking acceleration threshold. If the duration in which the collision acceleration of the target vehicle is lower than the unlock acceleration threshold value 10g exceeds 50ms, it is determined that the target vehicle is not subjected to a secondary collision.
And the vehicle door unlocking module is used for controlling the unlocking of the vehicle door of the target vehicle when the duration exceeds a preset time threshold.
It should be noted that the preset time threshold may be a time threshold for detecting whether the collision acceleration of the target vehicle is always in the safe unlock state. The preset time threshold may be a duration of 30ms, 35ms, or 40ms, or other durations, which is not limited in this embodiment.
It should be understood that, in order to prevent the target vehicle from having a collision accident again after being collided, it is necessary to monitor whether the duration that the collision acceleration of the target vehicle is lower than the unlocking acceleration threshold exceeds a preset time threshold, and if the duration exceeds the preset time threshold, it is determined that the target vehicle is in a safe state, and the door unlocking module controls the door of the target vehicle to be unlocked; and if the duration does not exceed the preset time threshold, judging that the target vehicle is likely to be subjected to secondary collision, and continuously monitoring the collision acceleration of the target vehicle.
In a specific implementation, for example, the preset time threshold is 30ms, the unlocking acceleration threshold is 10g, and when the vehicle door unlocking module monitors that the collision acceleration of the target vehicle is lower than 10g, the duration of the collision acceleration lower than the unlocking acceleration threshold is monitored. When the duration exceeds a preset time threshold value for 30ms, determining that the target vehicle is in a safe state at the moment, and controlling the door of the target vehicle to be unlocked; and if the collision acceleration rises to 12g when the duration of the collision acceleration which is lower than the unlocking acceleration threshold reaches 20ms, judging that the collision acceleration exceeds the unlocking acceleration threshold, possibly causing the target vehicle to be subjected to secondary collision, and continuously monitoring the collision acceleration of the target vehicle.
Further, the safety strategy module is further configured to obtain a preset safety strategy of the target vehicle and a starting condition corresponding to the safety strategy, determine a collision acceleration threshold of the target vehicle according to the starting condition, and start the preset safety strategy when the collision acceleration exceeds the collision acceleration threshold.
Further, the safety strategy module is further configured to lock a safety belt, deploy an airbag, and control an engine of the target vehicle to stop operating when the crash acceleration exceeds the crash acceleration threshold.
Further, the safety strategy module is also used for controlling the safety belt of the target vehicle to be unlocked and releasing the safety air bag.
Further, the collision detection module is further configured to, when it is detected that a target vehicle is collided, acquire a door-locked state of the target vehicle, and when the door of the target vehicle is not locked, control the unlocked door to be locked according to the door-locked state, and acquire a collision acceleration of the target vehicle.
The embodiment acquires the collision acceleration of the target vehicle when detecting that the target vehicle is collided, starts the preset safety strategy when the collision acceleration meets the starting condition of the preset safety strategy, monitors the duration that the collision acceleration is lower than the unlocking acceleration threshold when the collision acceleration is lower than the unlocking acceleration threshold, and controls the unlocking of the door of the target vehicle when the duration exceeds the preset time threshold. According to the invention, the door unlocking is controlled when the current speed is lower than the unlocking acceleration threshold value by judging whether the collision acceleration of the target vehicle is lower than the unlocking acceleration threshold value, so that the door unlocking control on the impacted vehicle is safely and accurately realized, the condition that passengers are in danger due to the fact that the door is unlocked in advance is effectively avoided, and the safety performance of the vehicle is improved.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not described in detail in this embodiment may refer to the vehicle door unlocking control method provided in any embodiment of the present invention, and are not described herein again.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are also included in the scope of the present invention.
Claims (10)
1. A vehicle door unlocking control method, characterized by comprising:
when detecting that a target vehicle is collided, acquiring collision acceleration of the target vehicle;
when the collision acceleration meets the starting condition of a preset safety strategy, starting the preset safety strategy;
when the collision acceleration is lower than an unlocking acceleration threshold value, monitoring the duration of the collision acceleration lower than the unlocking acceleration threshold value;
and controlling the door of the target vehicle to be unlocked when the duration exceeds a preset time threshold.
2. The vehicle door unlock control method according to claim 1, wherein the starting of a preset safety policy when the collision acceleration satisfies a starting condition of the preset safety policy includes:
acquiring a preset safety strategy of the target vehicle and starting conditions corresponding to the safety strategy;
determining a collision acceleration threshold value of the target vehicle according to the starting condition;
and when the collision acceleration exceeds the collision acceleration threshold value, starting the preset safety strategy.
3. The vehicle door unlock control method according to claim 2, wherein the initiating the preset safety strategy when the crash acceleration exceeds the crash acceleration threshold value includes:
and when the collision acceleration exceeds the collision acceleration threshold value, locking a safety belt, unfolding an air bag, and controlling the engine of the target vehicle to stop running.
4. The door unlock control method according to any one of claims 1 to 3, wherein after controlling the door of the target vehicle to be unlocked when the duration exceeds a preset time threshold, the method further includes:
and controlling the safety belt of the target vehicle to unlock and releasing the safety air bag.
5. The door unlock control method according to any one of claims 1 to 3, wherein the acquiring of the collision acceleration of the target vehicle upon detection of the target vehicle being collided, includes:
when a target vehicle is detected to be collided, acquiring a door locking state of the target vehicle;
and when the door of the target vehicle is unlocked, controlling the unlocking of the unlocked door according to the door locking state, and acquiring the collision acceleration of the target vehicle.
6. A vehicle door unlock control device, characterized by comprising:
the collision detection module is used for acquiring collision acceleration of a target vehicle when the target vehicle is detected to be collided;
the safety strategy module is used for starting a preset safety strategy when the collision acceleration meets the starting condition of the preset safety strategy;
the duration monitoring module is used for monitoring the duration of the collision acceleration lower than the unlocking acceleration threshold when the collision acceleration is lower than the unlocking acceleration threshold;
and the vehicle door unlocking module is used for controlling the unlocking of the vehicle door of the target vehicle when the duration exceeds a preset time threshold.
7. The door unlocking control device of claim 6, wherein the safety strategy module is further configured to obtain a preset safety strategy of the target vehicle and a starting condition corresponding to the safety strategy, determine a collision acceleration threshold of the target vehicle according to the starting condition, and start the preset safety strategy when the collision acceleration exceeds the collision acceleration threshold.
8. The door unlock control device of claim 7, wherein the safety strategy module is further configured to lock a seat belt, deploy an airbag, and control an engine of the target vehicle to stop operating when the crash acceleration exceeds the crash acceleration threshold.
9. The door unlock control device according to any one of claims 6 to 8, wherein the safety strategy module is further configured to control a seatbelt of the subject vehicle to unlock and release an airbag.
10. The door unlock control device according to any one of claims 6 to 8, wherein the collision detection module is further configured to acquire a door lock state of the target vehicle when it is detected that the target vehicle has a collision, control the unlocking of the unlocked door according to the door lock state when the door of the target vehicle is unlocked, and acquire the collision acceleration of the target vehicle.
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| CN202210007765.2A CN114475503A (en) | 2022-01-05 | 2022-01-05 | Vehicle door unlocking control method and device |
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| CN202210007765.2A CN114475503A (en) | 2022-01-05 | 2022-01-05 | Vehicle door unlocking control method and device |
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