CN109910808A - A kind of control method and control system avoiding false triggering air bag - Google Patents
A kind of control method and control system avoiding false triggering air bag Download PDFInfo
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- CN109910808A CN109910808A CN201910169763.1A CN201910169763A CN109910808A CN 109910808 A CN109910808 A CN 109910808A CN 201910169763 A CN201910169763 A CN 201910169763A CN 109910808 A CN109910808 A CN 109910808A
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Abstract
The present invention provides a kind of control method and control system for avoiding false triggering air bag, and control method includes: to obtain environment sensing data, is judged whether to meet the first initiation conditions according to the environment sensing data；Vehicle acceleration data is obtained, is judged whether to meet the second initiation conditions according to the vehicle acceleration data；If the environment sensing data meet first initiation conditions and the vehicle acceleration data meets second initiation conditions, detonate air bag.The control method of air bag of the present invention introduces environment sensing data and detects to collision accident, by meeting the first initiation conditions simultaneously and the second initiation conditions can just detonate air bag, effectively prevent chassis scratch collision bring air bag miss it is quick-fried.
Description
Technical field
The present invention relates to vehicle passive security technical field, in particular to a kind of controlling party for avoiding false triggering air bag
Method and control system.
Background technique
Passive safety feature refers to can minimize the safety device of personal injury after traffic accident generation, including to multiplying
The protection of visitor and pedestrian.Detection and classification collision are remote/close according to relevant limitation system equipment such as safety belt lock state, seat
State, and application restraint assembly such as air bag, safety belt and upspring type cover etc. provide occupant appropriate/pedestrian and protect
Shield.After mitigating car crass, avoid occupant because inertia occur secondary collision when extent of injury usually in the car front (just
Co-driver), side (interior front-seat and heel row) and three directional spredings of roof have air bag.
Currently, automobile air-bag system is based on pickup variation come sensing collision.Its working principle is that when
When colliding, collision alarm is captured by acceleration transducer, safety air sac controller adopts the collision alarm of capture
Collection, analysis, judgement and processing in time issue firing command driving gas to the collision for being likely to result in driver and occupant safety
Generator igniting, thus firing safety air-bag, in this way, driver and occupant pass through and air bag flexible contact, avoid and
Interior rigid objects collide and cause personal injury.
But this method cannot 100% accurate detection collision, under some extreme vehicle behaviors, it is possible to create accidentally
Sentence, for example chassis occurs when running car and is touched with cutting to pieces for road surface foreign matter (such as stone, stub etc.), generates unexpected detonation air bag
The case where, it is possible to cause the injury of occupant.
Summary of the invention
The embodiment of the present application solves in the prior art by providing a kind of control method for avoiding false triggering air bag
Air bag misses quick-fried technical problem, so that avoiding air bag from accidentally detonating causes the corresponding injury of occupant.
In a first aspect, the present invention provides a kind of control method for avoiding false triggering air bag characterized by comprising
Environment sensing data are obtained,
Judged whether to meet the first initiation conditions according to the environment sensing data；
Vehicle acceleration data is obtained,
Judged whether to meet the second initiation conditions according to the vehicle acceleration data；
If the environment sensing data meet first initiation conditions and the vehicle acceleration data meets described
Two initiation conditions, then detonate air bag.
Further, the control method further include: if the environment sensing data are unsatisfactory for first initiation conditions,
Do not detonate then air bag.
Further, the control method further include: if the environment sensing data meet first initiation conditions, and
The vehicle acceleration data is unsatisfactory for second initiation conditions, then do not detonate air bag.
Further, the environment sensing data include obstacle information, and the obstacle information includes obstacle identity
And/or obstacles borders size.
Further, first initiation conditions are that the corresponding collision accident of the obstacle information reaches default triggering item
Part.
Further, the acceleration information includes longitudinal acceleration and/or transverse acceleration；
The longitudinal acceleration be about acceleration transducer inside safety air sac controller and safety air sac controller outside
The function for the acceleration that portion's acceleration transducer perceives in a first direction；
The transverse acceleration be about acceleration transducer inside safety air sac controller and safety air sac controller outside
The function for the acceleration that portion's acceleration transducer perceives in a second direction.
Further, when the acceleration information is the longitudinal acceleration, first initiation conditions are described vertical
It is greater than the first detonation threshold value to acceleration；
When the acceleration information is the transverse acceleration, first initiation conditions are that the transverse acceleration is big
In the second detonation threshold value；
When the acceleration information includes longitudinal acceleration and transverse acceleration, first initiation conditions are described vertical
It is greater than the first detonation threshold value to acceleration and the transverse acceleration is greater than the second detonation threshold value.
Second aspect, the present invention provide a kind of control system for avoiding false triggering air bag, comprising:
Collision detection module, for detecting environment sensing data；
First judgment module meets the first initiation conditions for judging whether according to the environment sensing data；
Acceleration detection module, for detecting vehicle acceleration data；
Second judgment module meets the second initiation conditions for judging whether according to the vehicle acceleration data；
Safety air sac controller, for responding the judging result of first judgment module and the second judgment module, and judgement is
No detonation air bag.
Further, the collision detection module is laser radar and/or image collecting device.
Further, the acceleration detection module includes internal acceleration transducer and external acceleration sensor,
The internal acceleration transducer is set in the safety air sac controller, the internal acceleration transducer with
The safety air sac controller electrical connection, the internal acceleration transducer include that first longitudinal direction acceleration transducer and first are horizontal
To acceleration transducer；
The external acceleration sensor is set to outside the safety air sac controller, the external acceleration sensor with
Safety air sac controller electrical connection, the external sensor include at least one second longitudinal direction acceleration transducer and at least
One the second lateral acceleration sensor.
By adopting the above technical scheme, the control method for avoiding false triggering air bag and control system tool of the present invention
It has the advantages that:
The control method of air bag of the present invention introduces environment sensing data and detects to collision accident, by full simultaneously
The first initiation conditions of foot and the second initiation conditions can just detonate air bag, effectively prevent chassis and scratch collision bring air bag missing
It is quick-fried, and at low cost have wide practical use.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the supplementary restraint system control method schematic diagram of the embodiment of the present invention；
Fig. 2 is the control system schematic diagram of the air bag of the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
" one embodiment " or " embodiment " referred to herein, which refers to, may be included at least one implementation of the invention
A particular feature, structure, or characteristic.In the description of the present invention, it is to be understood that, term " on ", "lower", "top", "bottom" etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can be expressed or what is implied includes one or more of the features.Moreover, term " first ",
" second " etc. is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that in this way
The data used are interchangeable under appropriate circumstances, so that the embodiment of the present invention described herein can be in addition to scheming herein
Sequence other than those of showing or describe is implemented.
Embodiment 1:
As shown in Figure 1, the present invention provides a kind of control method for avoiding false triggering air bag characterized by comprising
Environment sensing data are obtained,
Judged whether to meet the first initiation conditions according to the environment sensing data；
Vehicle acceleration data is obtained,
Judged whether to meet the second initiation conditions according to the vehicle acceleration data；
If the environment sensing data meet first initiation conditions and the vehicle acceleration data meets described
Two initiation conditions, then detonate air bag.
The control method further include: if the environment sensing data are unsatisfactory for first initiation conditions, do not detonate
Air bag.
The control method further include: if the environment sensing data meet first initiation conditions, and the vehicle
Acceleration information is unsatisfactory for second initiation conditions, then do not detonate air bag.
The environment sensing data include obstacle information, and the obstacle information includes obstacle identity and/or obstacle
Object boundary dimensions.
It should be noted that the obstacle information of vehicle front refer to vehicle front all with road ground height not
The image or structural information of identical article, the obstacle identity include that stone, the road on vehicle front road are raised, set
Stake, pedestrian, vehicle, dustbin, trees etc..Due to the height characteristic of this types of obstructions, barrier can be obtained in several ways
Hinder object information, such as sonic detection, infrared detection, the mode of video camera and laser radar.
In possible embodiment, the acquisition of the obstacles borders size the following steps are included:
The actual coordinates of vehicle are established by environment sensing data acquisition device；
The barrier image information of environment sensing data acquisition is handled, the practical seat of the boundary point of barrier is found
Mark；
The estimation that length, height and width are carried out to barrier, obtains the obstacles borders size.
In some embodiments, first initiation conditions are that the corresponding collision accident of the obstacle information reaches default
Trigger condition.
The type of the collision accident includes that chassis scratches collision and the collision of vehicle body periphery, and the preset trigger condition is vehicle
The collision of vehicle body periphery will occur.
Specifically, the chassis, which scratches, collides the chassis height that the corresponding obstacles borders size is less than vehicle, such as
The foreign matters scraping collisions such as stone, road protrusion, stub occur, the vehicle body periphery is collided the corresponding obstacles borders size and is greater than
The chassis height of vehicle, such as pedestrian, bicycle, vehicle, dustbin, the head-on crash of trees and/or side collision occurs etc..
When only chassis, which will occur, for vehicle scratches collision, near the controller that especially just strikes air bag,
The meeting of corresponding collision accident reaches the second initiation conditions, but the collision time is not enough to cause casualties, and rises at this time instead
Gas explosion capsule is possible to damage passenger, and brings higher maintenance and replacement cost.
In possible embodiment, the environment sensing data further include estimated collision time, the first detonation item
Part can also include that the estimated collision time is less than or equal to 400 milliseconds.Specifically, the estimated collision time by vehicle with
The relative velocity that the relative distance and vehicle of barrier are close with barrier is calculated.The vehicle and barrier it is opposite away from
It is acquired from the vehicle and the close relative velocity of barrier by the environment sensing data acquisition device.
In some embodiments, the acceleration information includes longitudinal acceleration and/or transverse acceleration；
The longitudinal acceleration be about acceleration transducer inside safety air sac controller and safety air sac controller outside
The function for the acceleration that portion's acceleration transducer perceives in a first direction, i.e. I=Fx of Firing (ax,axe)；
The transverse acceleration be about acceleration transducer inside safety air sac controller and safety air sac controller outside
The function for the acceleration that portion's acceleration transducer perceives in a second direction, i.e. II=Fy of Firing (ay,aye)。
It should be noted that function Fx (ax,axe) and Fy (ay,aye) algorithm can be the folded of simple acceleration threshold
Add, is also possible to the judgement to physical quantity after the processing such as integrated acceleration.Heretofore described first direction is the traveling of vehicle
Direction, the second direction is perpendicular to the first direction.
In some embodiments, when the acceleration information is the longitudinal acceleration, first initiation conditions are
The longitudinal acceleration is greater than the first detonation threshold value；
When the acceleration information is the transverse acceleration, first initiation conditions are that the transverse acceleration is big
In the second detonation threshold value；
When the acceleration information includes longitudinal acceleration and transverse acceleration, first initiation conditions are described vertical
It is greater than the first detonation threshold value to acceleration and the transverse acceleration is greater than the second detonation threshold value.
In possible embodiment, the environment sensing data can also include curb, lane line, crossroad and friendship
The associated safety driving data of logical mark.
In some embodiments, when chassis, which will occur, for vehicle scratches collision, information warning is sent to user, is such as passed through
One or more of sound, light or vibration mode warn user.
Embodiment 2:
As shown in Fig. 2, the present invention also provides a kind of control systems for avoiding false triggering air bag, comprising:
Collision detection module, for detecting environment sensing data；
First judgment module meets the first initiation conditions for judging whether according to the environment sensing data；
Acceleration detection module, for detecting vehicle acceleration data；
Second judgment module meets the second initiation conditions for judging whether according to the vehicle acceleration data；
Safety air sac controller, for responding the judging result of first judgment module and the second judgment module, and judgement is
No detonation air bag.
In some embodiments, first initiation conditions are that the corresponding collision accident of the obstacle information reaches default
Trigger condition.
The type of the collision accident includes that chassis scratches collision and the collision of vehicle body periphery, and the preset trigger condition is vehicle
The collision of vehicle body periphery will occur.
In some embodiments, the collision detection module includes laser radar and/or image collecting device.The collision
When detection module is the laser radar, the direction of the launch of at least one laser radar horizontally toward vehicle front.It is optional
, the laser radar is arranged in vehicle chassis position, and ground proximity as far as possible.In addition, the collision detection module may be used also
Think acoustic detector, infra-red ray detection device etc..In possible embodiment, the collision detection module can also be
Advanced DAS (Driver Assistant System) (Advanced Driver Assistance System, abbreviation ADAS), the ADAS is by the ring
Border perception data is sent to the safety air sac controller, the ADAS and the peace by vehicle network (CAN/Flexray)
The transmission cycle of full air spring control is 50ms.
In some embodiments, the acceleration detection module includes internal acceleration transducer and external acceleration sensing
Device, the acceleration information include longitudinal acceleration and/or transverse acceleration；
The internal acceleration transducer is set in the safety air sac controller, the internal acceleration transducer with
The safety air sac controller connection, the internal acceleration transducer include that first longitudinal direction acceleration transducer and first are lateral
Acceleration transducer；
The external acceleration sensor is set to outside the safety air sac controller, the external acceleration sensor with
The safety air sac controller connection, the external sensor includes at least one second longitudinal direction acceleration transducer and at least one
A second lateral acceleration sensor.
In some embodiments, the longitudinal acceleration is about the first longitudinal direction acceleration transducer and described second
The function for the acceleration that longitudinal acceleration sensor perceives in a first direction, i.e. I=Fx of Firing (ax,axe)；
The transverse acceleration is to sense about first lateral acceleration sensor and second transverse acceleration
The function for the acceleration that device perceives in a second direction, i.e. II=Fy of Firing (ay,aye)。
It should be noted that function Fx (ax,axe) and Fy (ay,aye) algorithm can be the folded of simple acceleration threshold
Add, is also possible to the judgement to physical quantity after the processing such as integrated acceleration.Heretofore described first direction (longitudinal direction) is vehicle
Direction of travel, the second direction (transverse direction) is perpendicular to the first direction.
In some embodiments, when the acceleration information is the longitudinal acceleration, first initiation conditions are
The longitudinal acceleration is greater than the first detonation threshold value；
When the acceleration information is the transverse acceleration, first initiation conditions are that the transverse acceleration is big
In the second detonation threshold value；
When the acceleration information includes longitudinal acceleration and transverse acceleration, first initiation conditions are described vertical
It is greater than the first detonation threshold value to acceleration and the transverse acceleration is greater than the second detonation threshold value.
In some embodiments, the control system further includes alarm module, for sending information warning to user；It is described
Alarm module can be the combination of one or more of sound alarm module, vibration alarming module, optical information alarm module.
The safety air sac controller includes at least one detonation circuit, and the detonation circuit is for triggering air bag
Detonation.In possible embodiment, the air bag includes gas generator and airbag, when a vehicle is in a collision, institute
Ignition signal is sent to described by the judging result for stating safety air sac controller response first judgment module and the second judgment module
Air bag.Specifically, the safety air sac controller provides trigger current by the detonation circuit, make the trigger current
The electric detonator of the gas generator, electric detonator lead fire medicinal powder and gas-forming agent are flowed through, bulk gas is generated.Then gas
Body rapidly enters in the airbag, and the airbag expansion breaks through decorative cover and is deployed into maximum within a preset time, and becoming one has
The air cushion of pooling feature buffers the impact force of driver and occupant.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of control method for avoiding false triggering air bag characterized by comprising
Environment sensing data are obtained,
Judged whether to meet the first initiation conditions according to the environment sensing data；
Vehicle acceleration data is obtained,
Judged whether to meet the second initiation conditions according to the vehicle acceleration data；
If the environment sensing data meet first initiation conditions and the vehicle acceleration data meets described second
Quick-fried condition, then detonate air bag.
2. the control method of air bag according to claim 1, which is characterized in that further include:
If the environment sensing data are unsatisfactory for first initiation conditions, do not detonate air bag.
3. the control method of air bag according to claim 2, which is characterized in that further include:
If the environment sensing data meet first initiation conditions, and the vehicle acceleration data is unsatisfactory for described second
Initiation conditions, then do not detonate air bag.
4. the control method of air bag according to claim 1 to 3, which is characterized in that the environment sensing
Data include obstacle information, and the obstacle information includes obstacle identity and/or obstacles borders size.
5. the control method of air bag according to claim 4, which is characterized in that first initiation conditions are described
The corresponding collision accident of obstacle information reaches preset trigger condition.
6. the control method of air bag according to claim 4, which is characterized in that the acceleration information includes longitudinal
Acceleration and/or transverse acceleration；
The longitudinal acceleration is to add about outside acceleration transducer inside safety air sac controller and safety air sac controller
The function for the acceleration that velocity sensor perceives in a first direction；
The transverse acceleration is to add about outside acceleration transducer inside safety air sac controller and safety air sac controller
The function for the acceleration that velocity sensor perceives in a second direction.
7. the control method of air bag according to claim 6, which is characterized in that
When the acceleration information is the longitudinal acceleration, first initiation conditions are that the longitudinal acceleration is greater than the
One detonation threshold value；
When the acceleration information is the transverse acceleration, first initiation conditions are that the transverse acceleration is greater than the
Two detonation threshold values；
When the acceleration information includes longitudinal acceleration and transverse acceleration, first initiation conditions are that the longitudinal direction adds
Speed is greater than the first detonation threshold value and the transverse acceleration is greater than the second detonation threshold value.
8. a kind of control system for avoiding false triggering air bag characterized by comprising
Collision detection module, for detecting environment sensing data；
First judgment module meets the first initiation conditions for judging whether according to the environment sensing data；
Acceleration detection module, for detecting vehicle acceleration data；
Second judgment module meets the second initiation conditions for judging whether according to the vehicle acceleration data；
Safety air sac controller for responding the judging result of first judgment module and the second judgment module, and has judged whether
Quick-fried air bag.
9. the control system according to claim 8 for avoiding false triggering air bag, which is characterized in that the collision detection
Module is laser radar and/or image collecting device.
10. the control system according to claim 9 for avoiding false triggering air bag, which is characterized in that the acceleration
Detection module includes internal acceleration transducer and external acceleration sensor,
The internal acceleration transducer is set in the safety air sac controller, the internal acceleration transducer with it is described
Safety air sac controller electrical connection, the internal acceleration transducer include that first longitudinal direction acceleration transducer and first laterally add
Velocity sensor；
The external acceleration sensor is set to outside the safety air sac controller, the external acceleration sensor with it is described
Safety air sac controller electrical connection, the external sensor includes at least one second longitudinal direction acceleration transducer and at least one
Second lateral acceleration sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910169763.1A CN109910808A (en) | 2019-03-06 | 2019-03-06 | A kind of control method and control system avoiding false triggering air bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910169763.1A CN109910808A (en) | 2019-03-06 | 2019-03-06 | A kind of control method and control system avoiding false triggering air bag |
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| CN109910808A true CN109910808A (en) | 2019-06-21 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910169763.1A Pending CN109910808A (en) | 2019-03-06 | 2019-03-06 | A kind of control method and control system avoiding false triggering air bag |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114132281A (en) * | 2020-09-03 | 2022-03-04 | 北京宝沃汽车股份有限公司 | Method and device for determining vehicle collision, readable storage medium and electronic equipment |
| WO2022061708A1 (en) * | 2020-09-25 | 2022-03-31 | 浙江吉利控股集团有限公司 | Method, apparatus and device for avoiding accidental deployment of airbag and storage medium |
| CN114715066A (en) * | 2021-01-04 | 2022-07-08 | 广州汽车集团股份有限公司 | Airbag detonation control method and device based on multi-information fusion and terminal |
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