CN108528376B - Vehicle impact safety system and method and vehicle - Google Patents
Vehicle impact safety system and method and vehicle Download PDFInfo
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- CN108528376B CN108528376B CN201810481041.5A CN201810481041A CN108528376B CN 108528376 B CN108528376 B CN 108528376B CN 201810481041 A CN201810481041 A CN 201810481041A CN 108528376 B CN108528376 B CN 108528376B
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims abstract description 16
- 238000010009 beating Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/42—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects extending primarily along the sides of, or completely encircling, a vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R19/20—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact containing mainly gas or liquid, e.g. inflatable
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
The embodiment of the invention discloses a vehicle collision safety system, a method and a vehicle, wherein the vehicle collision safety system comprises the following components: the device comprises a gas generator, a monitoring module, a controller and an airbag, wherein the gas generator is used for lifting a crashed vehicle to enable the crashed vehicle to crash into the airbag on a threshold of the crashed vehicle, the gas generator supplies gas into the airbag, the monitoring module is used for monitoring the speed of the crashed vehicle and the distance between the crashed vehicle and the pre-crashed vehicle and sending the speed and the distance to the controller, and the controller is used for controlling the gas generator to work when the speed is larger than a preset speed and the distance is smaller than the preset distance. The embodiment of the invention can lift the crashed vehicle before the side collision occurs, so that the pre-crashed vehicle can collide with the threshold of the crashed vehicle, the strength of the threshold position is higher, the energy of the side collision can be absorbed to the maximum extent, the expanding space of the air bag in the automobile can be ensured, the air bag in the automobile can be better expanded, passengers can be better protected, the safety performance is improved, the structure is simple, and the production cost is low.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a vehicle collision safety system and method and a vehicle.
Background
On the side of the vehicle, the door region is structurally weak because the interior has no strong structural support. When an automobile is impacted laterally, the door area is subjected to strong impact and is easy to deform seriously. After the vehicle door area is severely deformed, the space in the vehicle is greatly reduced, the airbag in the vehicle is insufficient in unfolding space, the ideal effect of protecting passengers is not achieved, and the safety performance is required to be improved.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a vehicle crash safety system, a vehicle crash safety method, and a vehicle, so as to solve the above-mentioned technical problems.
An embodiment of the present invention proposes a vehicle crash safety system including: the device comprises a gas generator, a monitoring module, a controller and an airbag, wherein the airbag is used for lifting a crashed vehicle to enable the crashed vehicle to crash on a threshold of the crashed vehicle, the gas generator supplies gas into the airbag, the monitoring module is used for monitoring the speed of the crashed vehicle and the distance between the crashed vehicle and the crashed vehicle, and sending the speed and the distance to the controller, and the controller is used for controlling the gas generator to work when the speed is larger than a preset speed and the distance is smaller than the preset distance. Because the threshold material of vehicle is the panel beating, threshold position intensity is higher, can furthest absorb the energy of side collision, and can guarantee the expansion space of inside gasbag of car for inside gasbag of car expands better, protects the passenger better, improves the security performance, simple structure moreover, low in production cost.
Optionally, the method further comprises: the angle sensor is used for acquiring a first included angle between a connecting line of the angle sensor and the top of the head of the pre-crash vehicle and a road surface, a second included angle between a connecting line of the angle sensor and the bottom of the head of the pre-crash vehicle and the road surface, and sending the first included angle and the second included angle to the controller, and the controller calculates the impact height of the pre-crash vehicle according to the first included angle and the second included angle and controls the air supply amount of the gas generator according to the impact height. The collision height is calculated, and the lifting height of the crashed vehicle is controlled according to the collision height, so that the device can adapt to the collision of different pre-crashed vehicles and improve the safety coefficient.
Optionally, the striking height is the height of the front end middle position of the head of the pre-striking vehicle, and the raising height of the struck vehicle is reduced under the condition that the pre-striking vehicle is struck on the threshold of the struck vehicle, so that the struck vehicle is raised more quickly.
Optionally, the number of the gas generators is at least two, so that the gas supply speed and the gas supply amount can be improved, the crashed vehicle can be lifted faster, the gas supply amount is used for adjusting the lifting height of the doorsill, and the safety factor is further improved.
The embodiment of the invention provides a vehicle, which comprises a vehicle body and the vehicle impact safety system, wherein the vehicle impact safety system is arranged on the vehicle body. Because the threshold material of vehicle is the panel beating, threshold position intensity is higher, can furthest absorb the energy of side collision, and can guarantee the expansion space of inside gasbag of car for inside gasbag of car expands better, protects the passenger better, improves the security performance, simple structure moreover, low in production cost.
Optionally, the vehicle collision safety system further comprises a threshold, the threshold is installed on the side face of the vehicle body, the vehicle collision safety system is installed on the threshold, and the air bags are arranged along the length direction of the threshold, so that the weight of the lifted vehicle body can be reduced, the crashed vehicle can be lifted faster, the pre-crashed vehicle is prevented from striking the door area of the crashed vehicle, and the riding safety performance is improved better.
Optionally, the vehicle collision safety system further comprises an outer threshold, the outer threshold is installed on the threshold of the vehicle body, the vehicle collision safety system is integrated in the outer threshold, and the air bags are arranged along the length direction of the outer threshold, so that the vehicle collision safety system can be conveniently assembled on the vehicle body, and the installation efficiency of the vehicle collision safety system is improved.
The embodiment of the invention also provides a vehicle collision safety method, which comprises the following steps: acquiring the speed of a pre-collision vehicle and the distance between the pre-collision vehicle and a crashed vehicle; and when the speed is higher than the preset speed and the distance is smaller than the preset distance, controlling the gas generator to inflate the air bag, and lifting the crashed vehicle so that the pre-crashed vehicle collides with the threshold of the crashed vehicle. Because the threshold material of vehicle is the panel beating, threshold position intensity is higher, can furthest absorb the energy of side collision, and can guarantee the expansion space of inside gasbag of car for inside gasbag of car expands better, protects the passenger better, improves the security performance, simple structure moreover, low in production cost.
Optionally, the airbag lifts the collided side of the collided vehicle, so that the weight of the lifted vehicle body can be reduced, the collided vehicle can be lifted faster, the pre-collision vehicle is prevented from striking the door area of the collided vehicle, and the riding safety performance is improved better.
Optionally, when the speed is greater than a predetermined speed and the distance is less than a predetermined distance, controlling the gas generator to inflate the airbag to raise the crashed vehicle so that the pre-crashed vehicle collides with the rocker of the crashed vehicle includes: when the speed is greater than a preset speed and the distance is smaller than a preset distance, a first included angle between a connecting line of the angle sensor and the top of the head of the pre-collision vehicle and the road surface and a second included angle between a connecting line of the angle sensor and the bottom of the head of the pre-collision vehicle and the road surface are obtained; calculating the impact height of the pre-collision vehicle according to the first included angle and the second included angle; when the impact height is smaller than a first preset impact height, the gas generator is controlled to inflate an airbag on the impacted side of the impacted vehicle according to the impact height, and the impacted side of the impacted vehicle is lifted up, so that the pre-impacted vehicle impacts a threshold of the impacted vehicle; when the impact height is larger than a first preset impact height, the gas generator is controlled to respectively inflate the air bag on the impacted side and the air bag on the opposite side of the impacted vehicle according to the impact height, so that the impacted vehicle is lifted, and the pre-impacted vehicle is impacted on a threshold of the impacted vehicle. The collision height is calculated, and the lifting height of the crashed vehicle is controlled according to the collision height, so that the device can adapt to the collision of different pre-crashed vehicles and improve the safety coefficient.
According to the vehicle collision safety system, the vehicle collision safety method and the vehicle, the gas generator, the monitoring module, the controller and the gas bag are arranged, so that the gas bag is lifted by the crashed vehicle before side collision occurs, the pre-crashed vehicle collides with the threshold of the crashed vehicle, the threshold is made of metal plates, the strength of the position of the threshold is higher, the energy of the side collision can be absorbed to the greatest extent, the unfolding space of the gas bag in the vehicle can be ensured, the gas bag in the vehicle can be unfolded better, passengers can be protected better, the safety performance is improved, the structure is simple, and the production cost is low.
Drawings
FIG. 1 is a schematic installation view of a vehicle impact safety system according to an embodiment of the present invention.
Fig. 2 is a schematic view showing an operating state of the vehicle crash safety system according to the embodiment of the present invention.
Fig. 3 is a schematic diagram of the head thickness calculation of a pre-crash vehicle according to an embodiment of the present invention.
Fig. 4 is a cross-sectional view of A-A in fig. 1.
Fig. 5 is a flowchart of a vehicle crash safety method according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is described in detail below with reference to the accompanying drawings and the specific embodiments. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
Example 1
As shown in fig. 1, a vehicle crash safety system provided in an embodiment of the present invention includes: the inflator 3a, the monitoring module 4, the controller and the airbag 2 for raising the crashed vehicle after inflation to cause the pre-crashed vehicle to crash into the rocker of the crashed vehicle.
The gas generator 3a supplies gas into the airbag 2. The monitoring module 4 is used for monitoring the speed of the pre-crash vehicle, the distance between the pre-crash vehicle and the crashed vehicle and sending the speed and the distance to the controller.
The controller may be a programmable logic controller, the monitoring module 4 may be a radar, and the speed may be an average speed or an instantaneous speed.
The controller receives the speed and the distance and controls the gas generator 3a to operate when the speed is greater than a predetermined speed and the distance is less than the predetermined distance.
In use of the vehicle impact safety system, as shown in fig. 2, the monitoring module 4 monitors the speed of the pre-crash vehicle located on the side of the crashed vehicle and the distance of the pre-crash vehicle from the crashed vehicle in real time.
The side surface of the crashed vehicle is the side where the driver seat door is located or the side where the co-driver seat door is located.
When the speed of the pre-crash vehicle (for example, 100 km/h) is greater than a predetermined speed (for example, 50 km/h) and the distance (for example, 20 m) between the pre-crash vehicle and the crashed vehicle is smaller than a predetermined distance (for example, 50 m), the controller considers that the crash is unavoidable, the controller controls the gas generator 3a to operate, the gas generator 3a instantaneously outputs a large amount of gas into the airbag 2, the airbag 2 is inflated to contact with the ground, and the reaction force is raised by the crashed vehicle, for example, by 0.5m. In the event of a collision, the pre-crash vehicle strikes the rocker of the crashed vehicle.
According to the vehicle collision safety system provided by the embodiment of the invention, the gas generator, the monitoring module, the controller and the airbag are arranged, so that the airbag is lifted by a crashed vehicle before side collision occurs, the crashed vehicle is impacted on the threshold of the crashed vehicle, the threshold is made of sheet metal, the strength of the position of the threshold is higher, the energy of the side collision can be absorbed to the greatest extent, the unfolding space of the airbag in the vehicle can be ensured, the airbag in the vehicle can be unfolded better, passengers can be protected better, the safety performance is improved, the structure is simple, and the production cost is low.
Example two
In addition to the first embodiment, optionally, as shown in fig. 3, the vehicle crash safety system further includes: an angle sensor 5.
The angle sensor 5 is used for acquiring a first included angle theta 1 between a connecting line of the angle sensor 5 and the top of the head of the pre-crash vehicle and a road surface, and a second included angle theta 2 between a connecting line of the angle sensor 5 and the bottom of the head of the pre-crash vehicle and the road surface, and sending the first included angle theta 1 and the second included angle theta 2 to the controller.
The controller receives the first and second angles θ1 and θ2, calculates an impact height of the pre-crash vehicle according to the first and second angles θ1 and θ2, and controls an air supply amount of the gas generator 3a according to the impact height. The collision height is calculated, and the lifting height of the crashed vehicle is controlled according to the collision height, so that the device can adapt to the collision of different pre-crashed vehicles and improve the safety coefficient.
As shown in fig. 3, the installation height of the angle sensor 5 is H0, the distance between the pre-crash vehicle and the crashed vehicle collected by the monitoring module is S, and the thickness d=h1+h2=s×tan θ1+s×tan θ2 of the vehicle head. The height of the head bottom of the pre-crash vehicle is as follows: h Vehicle head bottom ＝H0-H2＝H0-S*tanθ2。
Setting the impact point of the pre-crash vehicle to be 2/3 of the thickness of the front end of the pre-crash vehicle from the bottom of the vehicle, the impact height is H=H Vehicle head bottom +2D/3＝H0+S*tanθ1-(S*tanθ2)/3。
The controller controls the air supply amount of the air generator according to the impact height H, and lifts the threshold of the crashed vehicle to the height H.
Further, the striking height is the height of the front end middle position of the head of the pre-striking vehicle, and the raising height of the crashed vehicle is reduced under the condition that the pre-striking vehicle is guaranteed to strike the threshold of the crashed vehicle, so that the crashed vehicle is raised more quickly.
Preferably, as shown in fig. 1, the number of the gas generators is at least two, namely the gas generators 3a and 3b, and the two gas generators supply gas to the same air bag 2, so that the gas supply speed and the gas supply amount can be improved, the crashed vehicle can be lifted faster, the gas supply amount is used for adjusting the lifting height of the threshold, and the safety factor is further improved.
Example III
The embodiment of the invention also provides a vehicle, which comprises a vehicle body and the vehicle impact safety system in the first embodiment or the second embodiment, wherein the vehicle impact safety system is arranged on the vehicle body.
According to the vehicle provided by the embodiment of the invention, the gas generator, the monitoring module, the controller and the gas bag are arranged, so that the gas bag is lifted by the crashed vehicle before the side collision occurs, the crashed vehicle is impacted on the threshold of the crashed vehicle, the threshold is made of metal plates, the strength of the position is higher, the energy of the side collision can be absorbed to the maximum extent, the expanding space of the gas bag in the vehicle can be ensured, the gas bag in the vehicle can be better expanded, passengers can be better protected, the safety performance is improved, the structure is simple, and the production cost is low.
Preferably, as shown in fig. 4, the vehicle further includes a rocker 6, the rocker 6 being mounted on a side of the vehicle body, the vehicle impact safety system being mounted on the rocker 6, and the airbag 2 being arranged along a length direction of the rocker 6. Both sides of the vehicle are provided with door sills 6, each door sill 6 being fitted with a vehicle impact safety system.
The side of the vehicle body refers to the side where the driver's seat door is located and the side where the passenger's seat door is located.
In the event of a collision, the gas generator 3a supplies gas to the airbag 2 on the side where the vehicle is crashed, and the airbag 2 lifts up on the crashed side, so that the weight of the lifted vehicle body can be reduced, the crashed vehicle can be lifted up faster, the pre-crashed vehicle can be prevented from striking the door area of the crashed vehicle, and the riding safety performance can be improved better.
Further, the vehicle further includes an outer rocker 1, and the outer rocker 1 is mounted on the rocker 6. The vehicle impact safety system is integrated in the outer threshold 1, and the air bags 2 are arranged along the length direction of the outer threshold 1, so that the vehicle impact safety system can be conveniently assembled on a vehicle body, and the installation efficiency of the vehicle impact safety system is improved.
Example IV
Based on the vehicle crash safety system in the first embodiment or the second embodiment, or the vehicle in the third embodiment, the present invention further provides a vehicle crash safety method, including:
s110, acquiring the speed of the pre-crash vehicle and the distance between the pre-crash vehicle and the crashed vehicle;
and S120, when the speed is greater than the preset speed and the distance is smaller than the preset distance, controlling the gas generator to inflate the air bag, and lifting the crashed vehicle so that the pre-crashed vehicle collides with a threshold of the crashed vehicle.
Because the threshold material of vehicle is the panel beating, threshold position intensity is higher, can furthest absorb the energy of side collision, and can guarantee the expansion space of inside gasbag of car for inside gasbag of car expands better, protects the passenger better, improves the security performance.
Further, the air bag lifts up the crashed side of the crashed vehicle, so that the weight of the lifted vehicle body can be reduced, the crashed vehicle can be lifted up more quickly, the pre-crashed vehicle is prevented from striking the door area of the crashed vehicle, and the riding safety performance is improved better.
Preferably, S120 specifically includes:
s1210, when the speed is greater than the preset speed and the distance is smaller than the preset distance, acquiring a first included angle between a connecting line of the angle sensor and the top of the head of the pre-crash vehicle and the road surface and a second included angle between a connecting line of the angle sensor and the bottom of the head of the pre-crash vehicle and the road surface;
s1220, calculating the impact height of the pre-crash vehicle according to the first included angle and the second included angle;
s1230, when the impact height is smaller than the first preset impact height, controlling the gas generator to inflate the airbag on the impacted side of the impacted vehicle according to the impact height, and lifting the impacted side of the impacted vehicle so as to enable the pre-impacted vehicle to impact the threshold of the impacted vehicle;
wherein the first predetermined impact height is a height at which the side of the crashed vehicle is lifted after the airbag is filled, i.e., a maximum height at which the side of the vehicle is lifted.
If the calculated impact height is 0.4m and the maximum height of the vehicle lifting is 0.5m, the pre-hit vehicle can hit the threshold of the hit vehicle as long as the air bag on the hit side is inflated and the hit vehicle is lifted to 0.4 m.
When the impact height is greater than the first preset impact height, the gas generator is controlled to respectively inflate the air bag on the impacted side and the air bag on the opposite side of the impacted vehicle according to the impact height, so that the impacted vehicle is lifted, and the pre-impacted vehicle is impacted on the threshold of the impacted vehicle.
If the calculated impact height is 0.6m and is larger than the lifting height of the impacted side, the air bag on the impacted side is inflated, and simultaneously the air bag on the opposite side of the impacted side is inflated, so that the two air bags lift the impacted vehicle to the height of 0.6 m. Wherein the airbag on the collided side is filled first.
The technical scheme of the invention is described in detail in the above with reference to the specific embodiments, and the specific embodiments are used for helping to understand the idea of the invention. Those skilled in the art will appreciate that many modifications and variations are possible in light of the above teaching.
Claims (8)
1. A vehicle impact safety system, comprising: the device comprises a gas generator, a radar, a controller and an airbag, wherein the gas generator is used for lifting a crashed vehicle to enable the crashed vehicle to crash into the threshold of the crashed vehicle, the gas generator is used for supplying gas into the airbag, the radar is used for monitoring the speed of the crashed vehicle and the distance between the crashed vehicle and the crashed vehicle, the speed and the distance are sent to the controller, and the controller is used for controlling the gas generator to work when the speed is larger than a preset speed and the distance is smaller than the preset distance;
further comprises: the angle sensor is used for acquiring a first included angle between a connecting line of the angle sensor and the top of the head of the pre-crash vehicle and a road surface, a second included angle between a connecting line of the angle sensor and the bottom of the head of the pre-crash vehicle and the road surface, and sending the first included angle and the second included angle to the controller, and the controller calculates the impact height of the pre-crash vehicle according to the first included angle and the second included angle and controls the air supply amount of the gas generator according to the impact height.
2. The vehicle impact safety system according to claim 1, wherein the impact height is a height of a front end intermediate position of the pre-crash vehicle head.
3. The vehicle impact safety system of claim 2, wherein the number of gas generators is at least two.
4. A vehicle comprising a body and a vehicle impact safety system according to any one of claims 1-3, said vehicle impact safety system being mounted on said body.
5. The vehicle of claim 4, further comprising a rocker mounted on a side of the vehicle body, the vehicle impact safety system being mounted on the rocker, the airbag being disposed along a length of the rocker.
6. The vehicle of claim 5, further comprising an outer rocker mounted to a rocker of the vehicle body, the vehicle impact safety system being integrated within the outer rocker, the air bag being disposed along a length of the outer rocker.
7. A vehicle crash safety method, comprising:
acquiring the speed of a pre-collision vehicle and the distance between the pre-collision vehicle and a crashed vehicle;
when the speed is higher than a preset speed and the distance is smaller than the preset distance, the gas generator is controlled to inflate the air bag, and the crashed vehicle is lifted up, so that the pre-crashed vehicle collides with a threshold of the crashed vehicle;
when the speed is greater than a predetermined speed and the distance is less than a predetermined distance, controlling the inflator to inflate the airbag to lift the crashed vehicle so that the pre-crashed vehicle crashes into the threshold of the crashed vehicle comprises:
when the speed is greater than a preset speed and the distance is smaller than a preset distance, a first included angle between a connecting line of the angle sensor and the top of the head of the pre-collision vehicle and the road surface and a second included angle between a connecting line of the angle sensor and the bottom of the head of the pre-collision vehicle and the road surface are obtained;
calculating the impact height of the pre-collision vehicle according to the first included angle and the second included angle;
when the impact height is smaller than a first preset impact height, the gas generator is controlled to inflate an airbag on the impacted side of the impacted vehicle according to the impact height, and the impacted side of the impacted vehicle is lifted up, so that the pre-impacted vehicle impacts a threshold of the impacted vehicle;
when the impact height is larger than a first preset impact height, the gas generator is controlled to respectively inflate the air bag on the impacted side and the air bag on the opposite side of the impacted vehicle according to the impact height, so that the impacted vehicle is lifted, and the pre-impacted vehicle is impacted on a threshold of the impacted vehicle.
8. The vehicle impact safety method according to claim 7, wherein the airbag lifts up a crashed side of the crashed vehicle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810481041.5A CN108528376B (en) | 2018-05-18 | 2018-05-18 | Vehicle impact safety system and method and vehicle |
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| CN201810481041.5A CN108528376B (en) | 2018-05-18 | 2018-05-18 | Vehicle impact safety system and method and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116001715A (en) * | 2023-02-09 | 2023-04-25 | 重庆赛力斯新能源汽车设计院有限公司 | Integrated active safety system |
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| CN108528376A (en) | 2018-09-14 |
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