CN114802089B - Control method and control system for vehicle safety airbag - Google Patents

Control method and control system for vehicle safety airbag Download PDF

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Publication number
CN114802089B
CN114802089B CN202210475754.7A CN202210475754A CN114802089B CN 114802089 B CN114802089 B CN 114802089B CN 202210475754 A CN202210475754 A CN 202210475754A CN 114802089 B CN114802089 B CN 114802089B
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China
Prior art keywords
target obstacle
vehicle
type
airbag
igniting
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CN202210475754.7A
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CN114802089A (en
Inventor
佟洋
王姣
祝贺
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Zhejiang Geely Holding Group Co Ltd
Geely Automobile Research Institute Ningbo Co Ltd
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Zhejiang Geely Holding Group Co Ltd
Geely Automobile Research Institute Ningbo Co Ltd
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Priority to CN202210475754.7A priority Critical patent/CN114802089B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • 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
    • 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
    • B60R2021/01211—Expansion of air bags
    • 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
    • B60R2021/01211—Expansion of air bags
    • B60R2021/01231—Expansion of air bags control of expansion timing or sequence
    • 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
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Abstract

The invention provides a control method and a control system for a vehicle safety airbag, and relates to the technical field of vehicle safety. The method comprises the steps of firstly obtaining the type, the moving speed and the distance from a target obstacle to a vehicle within a preset range of the vehicle by adopting a V2X technology; judging whether the target obstacle can collide with the own vehicle or not according to the type, the moving speed and the distance between the target obstacle and the own vehicle and the running speed of the own vehicle; and then selectively and normally igniting the safety airbag of the self-vehicle or not igniting the safety airbag or igniting the safety airbag in advance according to the type of the target obstacle when the self-vehicle and the target obstacle are determined to have unavoidable collision. Compared with the image acquisition technology, the V2X technology is adopted, the method is more accurate and wider in applicability, the explosion time of the safety air bag is controlled according to the type of the target obstacle, better protection can be provided for passengers, and the situation that the safety air bag is unnecessarily exploded can be avoided.

Description

Control method and control system for vehicle safety airbag
Technical Field
The invention relates to the technical field of vehicle safety, in particular to a control method and a control system of a vehicle safety airbag.
Background
The existing automobile air bag controller in the market detects that the collision algorithm is based on the current acceleration, the air bag is ignited as long as the acceleration of the automobile is larger than a certain value, the acceleration-based air bag controller is difficult to judge the 'under-drilling collision' and the 'small offset collision' in time, and the speed of the whole automobile cannot be quickly reduced due to the collision, so that the deceleration-based air bag controller can sense the collision for a relatively long time, the air bag is opened untimely, and the protection effect of automobile passengers is poor. And the existing airbag controller cannot control the explosion timing of the airbag based on the type of the identified collision target, so that the explosion timing of the airbag is not very accurate due to no pertinence.
Disclosure of Invention
An object of a first aspect of the present invention is to provide a control method for a vehicle airbag, which solves the technical problem of inaccurate ignition timing of the vehicle airbag in the prior art.
An object of a second aspect of the present invention is to provide a control system for a vehicle airbag.
According to an object of a first aspect of the present invention, there is provided a control method of a vehicle airbag, comprising:
acquiring the type and the moving speed of a target obstacle in a preset range from a vehicle and the distance of the target obstacle from the vehicle by adopting a V2X technology;
judging whether the target obstacle can collide with the own vehicle or not according to the type, the moving speed, the distance between the target obstacle and the own vehicle and the running speed of the own vehicle;
and selectively and normally igniting the safety airbag of the self-vehicle according to the type of the target obstacle or not igniting the safety airbag or igniting the safety airbag in advance when the self-vehicle is determined to collide with the target obstacle inevitably.
Optionally, the step of acquiring the type, the moving speed and the distance from the target obstacle to the own vehicle within the preset range by adopting the V2X technology specifically includes:
and acquiring the type, the moving speed and the distance of the target obstacle from the vehicle through signal transmission between a first wireless communication device installed on the vehicle and a second wireless communication device installed on the target obstacle.
Optionally, the types of the target obstacle are classified into a first type of target obstacle including a person or a two-wheeled vehicle, a second type of target obstacle including a passenger car, and a third type of target obstacle including a truck.
Optionally, when it is determined that the vehicle and the target obstacle may collide inevitably, the method selectively and normally ignites an airbag of the vehicle or does not ignite the airbag or explodes the airbag in advance according to the type of the target obstacle, specifically including:
the airbag is not imploding when it is determined that an unavoidable collision of the own vehicle with the target obstacle occurs and that the type of the target obstacle is a first type of target obstacle.
Optionally, the step of selectively and normally igniting the airbag of the own vehicle or not igniting the airbag or igniting the airbag in advance according to the type of the target obstacle when it is determined that the own vehicle and the target obstacle may collide inevitably, further comprises:
the airbag is normally ignited when it is determined that an unavoidable collision of the own vehicle with the target obstacle occurs and the type of the target obstacle is a second type of target obstacle.
Optionally, the step of selectively and normally igniting the airbag of the own vehicle or not igniting the airbag or igniting the airbag in advance according to the type of the target obstacle when it is determined that the own vehicle and the target obstacle may collide inevitably, further comprises:
the airbag is ignited in advance when it is determined that an unavoidable collision occurs between the own vehicle and the target obstacle and the type of the target obstacle is a third type of target obstacle.
Optionally, the seat belt is tightened in advance while the airbag is being pre-ignited when it is determined that an unavoidable collision of the own vehicle with the target obstacle occurs and the type of the target obstacle is a third type of target obstacle.
Optionally, the advance time of the advance ignition of the airbag is any value ranging from 10ms to 20ms.
According to a second object of the present invention, there is also provided a control system of a vehicle airbag, comprising:
the control module comprises a memory and a processor, wherein a computing program is stored in the memory, and the computing program is used for realizing the control method when being executed by the processor.
Optionally, the method further comprises:
the first wireless communication device is arranged on the bicycle;
and the second wireless communication device is in signal connection with the first wireless communication device when the distance between the second wireless communication device and the first wireless communication device is within a preset range, and is arranged on the target obstacle.
The method comprises the steps of firstly obtaining the type, the moving speed and the distance from a target obstacle to a vehicle within a preset range of the vehicle by adopting a V2X technology; judging whether the target obstacle can collide with the own vehicle or not according to the type, the moving speed and the distance between the target obstacle and the own vehicle and the running speed of the own vehicle; and then selectively and normally igniting the safety airbag of the self-vehicle or not igniting the safety airbag or igniting the safety airbag in advance according to the type of the target obstacle when the self-vehicle and the target obstacle are determined to have unavoidable collision. The technical scheme adopts the V2X technology, compared with the existing image acquisition technology, the method is more accurate and wider in applicability, and the ignition timing of the safety airbag is controlled according to the type of the target obstacle, so that better protection can be provided for passengers, and the situation of unnecessary ignition of the safety airbag can be avoided.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
FIG. 1 is a schematic flow chart of a control method of a vehicle airbag according to one embodiment of the invention;
FIG. 2 is a schematic block diagram of a control system for a vehicle airbag according to one embodiment of the invention;
fig. 3 is a schematic structural view of a control system of a vehicle airbag according to another embodiment of the present invention.
Reference numerals:
100-control system, 10-control module, 11-memory, 12-processor, 20-first wireless communication device, 30-second wireless communication device, 40-air bag.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
Fig. 1 is a schematic flowchart of a control method of a vehicle airbag according to an embodiment of the present invention. As shown in fig. 1, in a specific embodiment, the control method of the vehicle airbag includes the steps of:
step S100, acquiring the type, the moving speed and the distance from the target obstacle to the own vehicle within a preset range of the own vehicle by adopting a V2X technology;
step S200, judging whether the target obstacle can collide with the own vehicle or not according to the type, the moving speed, the distance between the target obstacle and the own vehicle and the running speed of the own vehicle;
and step S300, selectively and normally igniting the safety airbag of the self-vehicle or not igniting the safety airbag or igniting the safety airbag in advance according to the type of the target obstacle when the self-vehicle and the target obstacle are determined to generate unavoidable collision.
The embodiment adopts the V2X technology, and compared with the existing image acquisition technology, the method is more accurate and wider in applicability, and because the V2X technology senses that the vision distance is exceeded, the image acquisition technology is limited by certain working conditions, such as cloudy days, foggy days and ghost detection lamps, and the V2X technology has great advantages relative to cameras and radars. And the explosion time of the air bag is controlled according to the type of the target obstacle, so that better protection can be provided for passengers, and the situation that the air bag is unnecessarily ignited can be avoided. The conventional technology adopts an image acquisition technology, and a target obstacle is required to appear in the lens to be used as an obstacle, but in the embodiment, even if the target obstacle does not appear in the field of view or is blocked by other objects, the hidden target obstacle can be found out through a V2X technology, so that the safety of passengers is further ensured.
In this embodiment, step S100 specifically includes the steps of:
the type, the moving speed and the distance of the target obstacle from the vehicle are acquired through signal transmission between a first wireless communication device installed on the vehicle and a second wireless communication device installed on the target obstacle. The embodiment can judge whether the own vehicle inevitably collides with the target obstacle according to the acquired type, moving speed and distance of the target obstacle from the own vehicle and the speed of the own vehicle. The embodiment adopts the signal transmission between the first wireless communication device and the second wireless communication device, and can find out the dangerous target obstacle even if the target obstacle does not appear in the field of view of the vehicle.
In this embodiment, the types of target obstacles are classified into a first type of target obstacle including a first type of article and a first type of living thing, a second type of target obstacle including a pedestrian, a first type of non-motor vehicle, and a first type of automobile, and a third type of target obstacle including a truck. In other embodiments, the type of target obstacle may also be set according to specific design requirements.
In this embodiment, the step S300 specifically includes the steps of:
step one: the airbag is not ignited when it is determined that an unavoidable collision of the own vehicle with the target obstacle occurs and the type of the target obstacle is the first type of target obstacle.
Step two: the airbag is normally ignited when it is determined that an unavoidable collision of the own vehicle with the target obstacle occurs and the type of the target obstacle is the second type of target obstacle.
Step three: the airbag is ignited in advance when it is determined that an unavoidable collision of the own vehicle with the target obstacle occurs and the type of the target obstacle is a third type of target obstacle.
That is, if the target obstacle is a person or a two-wheeled vehicle or a moving object, even if the own vehicle collides with it, there is no great influence on the passenger, in which case it is unnecessary to spot-fire the airbag, and the cost of repairing the airbag is saved. It is understood that when the type of the target obstacle is an uncomfortable point explosion or irreversible protection device, even if the collision strength has reached a preset point explosion threshold, the irreversible device will not be point exploded to avoid false explosion, for example, the pedestrian protection pop-up protection hood collides with other vehicles, rather than collides with people, and then the hood should not be point exploded to pop up, thereby reducing the false explosion rate. The V2X has the following advantages relative to the camera: in the communication range, the target obstacle and the vehicle can communicate, the sensing range of the camera is small, the sensing time is late, extreme working conditions such as a 'ghost probe' working condition, and V2X is more accurate and earlier than the sensing of the camera and the radar. If the target obstacle is a passenger car, the safety airbag is only required to be ignited according to the ignition time of the emergency normally, so that the safety of passengers is ensured. If the target obstacle is a truck, the situation that the vehicle drills to the bottom of the truck occurs when the vehicle collides, and the safety air bag judged based on acceleration can be perceived for a long time, and the situation is not enough if the safety air bag is exploded according to a normal time point, so that the safety air bag needs to be exploded in advance to ensure the safety of passengers aiming at the working condition. In a preferred embodiment, the seat belt is tightened in advance while the airbag is being ignited in advance when it is determined that an unavoidable collision of the own vehicle with the target obstacle occurs and the type of the target obstacle is the third type of target obstacle, which embodiment can further secure the safety of the passenger by tightening the seat belt in advance. Here, the advance time of the advance ignition airbag is any value ranging from 10ms to 20ms. For example, it may be 10ms or 15ms or 20ms.
Fig. 2 is a schematic structural view of a control system 100 of the vehicle airbag 40 according to one embodiment of the invention. As shown in fig. 2, in a specific embodiment, the control system 100 of the vehicle airbag 40 includes a control module 10, where the control module 10 includes a memory 11 and a processor 12, and a computer program is stored in the memory 11, and the computer program is executed by the processor 12 to implement the control method described above. The processor 12 may be a central processing unit (central processing unit, CPU for short), or a digital processing unit or the like. The processor 12 transmits and receives data through a communication interface. The memory 11 is used to store programs executed by the processor 12. The memory 11 is any medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, and may be a combination of multiple memories 11. The above-described computer program may be downloaded from a computer readable storage medium to a corresponding computing/processing device or downloaded to a computer or an external memory device via a network (e.g., the internet, a local area network, a wide area network, and/or a wireless network).
Fig. 3 is a schematic structural view of a control system of a vehicle airbag according to another embodiment of the present invention. As shown in fig. 3, in this embodiment, the control system 100 further includes a first wireless communication device 20 and a second wireless communication device 30, the first wireless communication device 20 being mounted on the host vehicle. The second wireless communication device 30 is signal-connected to the first wireless communication device 20 while being within a predetermined range from the first wireless communication device 20, and is installed on the target obstacle.
According to the embodiment, the type of a target obstacle (such as a truck, a car, a pedestrian, a motorcycle, an electric motorcycle and the like) can be transmitted to the vehicle before collision through a V2X technology, so that under a specific working condition (such as a drilling truck), the ignition threshold is dynamically changed in cooperation with conventional collision sensing, early tightening of a safety belt is realized, early ignition of an airbag is realized, and the protection effect of a restraint system on passengers is improved.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (8)

1. A control method of an airbag for a vehicle, characterized by comprising:
acquiring the type and the moving speed of a target obstacle in a preset range from a vehicle and the distance of the target obstacle from the vehicle by adopting a V2X technology;
judging whether the target obstacle can collide with the own vehicle or not according to the type, the moving speed, the distance between the target obstacle and the own vehicle and the running speed of the own vehicle;
selectively and normally igniting an airbag of the own vehicle according to the type of the target obstacle or not igniting the airbag or igniting the airbag in advance when it is determined that the own vehicle and the target obstacle can collide with each other inevitably;
the types of the target obstacles are divided into a first type of target obstacle, a second type of target obstacle and a third type of target obstacle, wherein the first type of target obstacle comprises a first type of person or two-wheeled vehicle, the second type of target obstacle comprises a first type of passenger vehicle, and the third type of target obstacle comprises a truck;
the method comprises the steps of selectively and normally igniting an airbag of the vehicle according to the type of the target obstacle or not igniting the airbag or igniting the airbag in advance when the vehicle is determined to collide with the target obstacle inevitably, and further comprises the steps of:
the airbag is ignited in advance when it is determined that an unavoidable collision occurs between the own vehicle and the target obstacle and the type of the target obstacle is a third type of target obstacle.
2. The control method according to claim 1, characterized in that the step of acquiring the type of the target obstacle, the moving speed and the distance of the target obstacle from the own vehicle within a preset range of the own vehicle using V2X technology, specifically comprises:
and acquiring the type, the moving speed and the distance of the target obstacle from the vehicle through signal transmission between a first wireless communication device installed on the vehicle and a second wireless communication device installed on the target obstacle.
3. The control method according to claim 2, characterized in that the step of selectively and normally igniting or not igniting the airbag of the own vehicle or igniting the airbag in advance according to the type of the target obstacle when it is determined that an unavoidable collision of the own vehicle with the target obstacle occurs, specifically comprises:
the airbag is not imploding when it is determined that an unavoidable collision of the own vehicle with the target obstacle occurs and that the type of the target obstacle is a first type of target obstacle.
4. A control method according to claim 3, wherein the step of selectively and normally igniting or not igniting the airbag of the own vehicle or igniting the airbag in advance in accordance with the type of the target obstacle when it is determined that an unavoidable collision of the own vehicle with the target obstacle occurs, further comprises:
the airbag is normally ignited when it is determined that an unavoidable collision of the own vehicle with the target obstacle occurs and the type of the target obstacle is a second type of target obstacle.
5. The control method according to claim 4, characterized in that the webbing is tightened in advance while the airbag is being pre-ignition-exploded when it is determined that an unavoidable collision of the own vehicle with the target obstacle occurs and the type of the target obstacle is a third type of target obstacle.
6. The control method according to claim 5, wherein,
the advance time of the advance ignition of the air bag is any value ranging from 10ms to 20ms.
7. A control system of an airbag for a vehicle, characterized by comprising:
a control module comprising a memory and a processor, the memory having stored therein a computing program which when executed by the processor is adapted to carry out the control method according to any one of claims 1-6.
8. The control system of claim 7, further comprising:
the first wireless communication device is arranged on the bicycle;
and the second wireless communication device is in signal connection with the first wireless communication device when the distance between the second wireless communication device and the first wireless communication device is within a preset range, and is arranged on the target obstacle.
CN202210475754.7A 2022-04-29 2022-04-29 Control method and control system for vehicle safety airbag Active CN114802089B (en)

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US8554461B2 (en) * 2007-02-19 2013-10-08 Ford Global Technologies, Llc System and method for pre-deploying restraints countermeasures using pre-crash sensing and post-crash sensing
JP6224932B2 (en) * 2013-07-12 2017-11-01 タカタ株式会社 Air bag and air bag device
JP6534980B2 (en) * 2016-09-08 2019-06-26 トヨタ自動車株式会社 Passenger seat airbag device for vehicle
US10183641B2 (en) * 2017-03-23 2019-01-22 Baidu Usa Llc Collision prediction and forward airbag deployment system for autonomous driving vehicles
CN107161098A (en) * 2017-04-07 2017-09-15 吉利汽车研究院（宁波）有限公司 A kind of vehicle safety control system and control method
CN111891062B (en) * 2020-07-23 2022-07-26 北京汽车研究总院有限公司 Control method and device of vehicle safety airbag, vehicle-mounted equipment and vehicle

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