CN112918424B - Air bag for reducing human-ground collision damage in ultra-low speed accident of intelligent automobile - Google Patents
Air bag for reducing human-ground collision damage in ultra-low speed accident of intelligent automobile Download PDFInfo
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- CN112918424B CN112918424B CN202110233032.6A CN202110233032A CN112918424B CN 112918424 B CN112918424 B CN 112918424B CN 202110233032 A CN202110233032 A CN 202110233032A CN 112918424 B CN112918424 B CN 112918424B
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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
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
- B60R21/36—Protecting non-occupants of a vehicle, e.g. pedestrians using airbags
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Abstract
In order to reduce the human-ground collision injury under the condition that the lower limbs and the buttocks of the pedestrians are always positioned below an engine hood in an ultra-low speed accident, the invention provides an air bag which consists of three sections and forms a U-shaped protection, the surface of a second section of the air bag is covered with a film, and quick-drying mucus is arranged below the film, and the steps of protecting the pedestrians are as follows: when an accident is detected to be unavoidable, the vehicle is completely braked and the steering is controlled to ensure that the pedestrian is positioned near the extension line of the center line of the engine cover, and the first section of the air bag is unfolded; when the human body collides with the automobile, the second and third air bags are unfolded; when the second section of air bag is detected to rotate 45 degrees under the action of the human body, the connection between the first section of air bag and the vehicle body is disconnected, so that the human body and the air bag fall to the ground together, and the air bag is attached to the human body through mucus on the surface of the air bag. The invention has the advantage that the air bag is arranged between the pedestrian and the ground at the ultra-low speed so as to reduce the collision damage of the pedestrian and the ground.
Description
Technical Field
The invention relates to the field of pedestrian safety, in particular to an air bag for reducing pedestrian and ground collision damage in an ultra-low speed accident of an intelligent automobile.
Background
In a traffic accident, casualties are mainly divided into two parts, namely persons inside and persons outside the vehicle. According to statistics, the number of people who are injured and killed by pedestrians is second to that of passengers in the vehicle, so that the trend of pedestrian protection is more and more obvious. Pedestrian injury in traffic accidents is mainly caused by vehicle body collision injury and ground collision injury. At present, most of human collision damage researches are mainly aimed at medium and high speed traffic accidents, and few researches are carried out on low speed and ultra-low speed. According to the existing research, in the accident that the vehicle speed is lower than 25km/h, the ground collision damage is larger than the vehicle collision damage. The prior research result is noticed to provide a method, when an accident happens, the landing posture of a pedestrian is changed by controlling braking of an automobile, and an air bag is popped from the lower part of a vehicle head to form an air bag cushion with a size suitable for the pedestrian in the process of separating the pedestrian from the ground, so that the collision damage of the pedestrian is reduced.
But such methods are not applicable to all ultra low speed cases. Because the automobile has low kinetic energy at ultra-low speed, when a frontal collision accident occurs, if the center of gravity of a collided pedestrian is low (such as a child), or the pedestrian is collided due to gait or head shape (such as a minibus) of the pedestrian, the motion track of the pedestrian is simple, the pedestrian can be probably considered to move along the advancing direction of the automobile, in the direction vertical to the ground, the center of mass of the pedestrian cannot move upwards or the moving quantity of the center of mass of the pedestrian is small, the lower limb of the pedestrian is always in contact with the ground or is close to the ground, and the hip is positioned below an engine cover after being collided, so the airbag does not solve the problem that the lower limb of a human body can be damaged when the airbag is unfolded.
Therefore, in response to such a collision accident, if a pedestrian can be separated from the space where the vehicle falls on the ground and a section of the airbag wall is placed, the pedestrian presses the airbag to fall on the ground, thereby isolating the contact of the pedestrian and protecting the pedestrian.
Disclosure of Invention
In order to reduce the collision damage of the lower limbs and the buttocks of the pedestrians below an engine cover cap in an ultra-low speed accident, the invention provides an air bag, which consists of three sections, wherein the first section and the third section form side protection and form U-shaped protection together with the second section of the air bag, and the steps of reducing the collision damage of the pedestrians are as follows:
s1: when the automobile detects that the accident is unavoidable, the automobile is completely braked; if the pedestrian is detected to be positioned near the extension line of the center line of the engine cover, inflating the first section of the air bag; if the pedestrian is detected to be positioned near the extension lines on the two sides of the vehicle head, controlling the steering to enable the pedestrian to approach the center line of the engine cover and then re-inflating the first section of air bag;
s2: re-inflating the first section of airbag to deploy the second and third sections of airbag when a collision between the pedestrian and the vehicle is detected;
s3: when the second section of the air bag is detected to rotate 45 degrees under the action of the human body, the connection between the first section of the air bag and the vehicle body is disconnected, so that the human body and the air bag fall to the ground together.
When the automobile detects that the accident is unavoidable, the automobile is completely braked; if detecting that the pedestrian is positioned near the extension line of the center line of the engine cover, inflating a first section of air bag; if the pedestrian is detected to be positioned on the inner sides of the extension lines on the two sides of the vehicle head, the steering is controlled to enable the pedestrian to approach the center line of the engine cover and then inflate the first section of air bag again; re-inflating the first section of airbag to deploy the second and third sections of airbag when a collision between the pedestrian and the vehicle is detected; when the second section of the air bag is detected to rotate 45 degrees under the action of the human body, the first section of the air bag is disconnected from the vehicle body; the film containing quick-drying mucus in the surface of the second section of the air bag is broken after colliding with a person, and the mucus flows out to stick the air bag to the human body, so that the human body and the air bag fall to the ground together.
Preferably, the air bag is divided into three sections and folded below the headlight on the right side of the automobile, each section shares one gas generator, and an interlayer is arranged between the first section of air bag and the second section of air bag and prevents gas from flowing to the second section of air bag after the first section of air bag is inflated for the first time; the surface of the second section of the air bag is covered with a film containing quick-drying mucus, the film on the surface of the air bag is broken after colliding with a person after being unfolded, and the mucus flows out to stick the air bag to the human body.
Preferably, in step S1, when the automobile detects that the accident is unavoidable, the automobile is fully braked to reduce the collision damage of the pedestrian and the vehicle, and the intelligent vehicle-mounted device is used to detect the relative position of the pedestrian and the vehicle in real time, if the pedestrian is detected to be located near the extension line of the center line of the engine cover, it means that the pedestrian is not hurt by igniting the first section of airbag, so the first section of airbag is inflated; because the kinetic energy obtained by the pedestrian after the vehicle collision is small at the ultra-low speed and the displacement generated by the pedestrian being impacted is short, the length of the first section of the air bag after the first section of the air bag is completely unfolded is 50cm, and the height of the first section of the air bag is 150 cm; if the pedestrian is detected to be located on the inner sides of the extension lines on the two sides of the vehicle head, the collision position of the pedestrian and the vehicle is located near the vehicle lamp, the impact force of the airbag which is detonated at the moment has the risk of seriously damaging the pedestrian, the vehicle is controlled to turn to ensure that the first collision position of the pedestrian and the vehicle is in the middle of the position of the vehicle head, if the pedestrian is located in the left area of the vehicle head, the vehicle is controlled to turn to the left, if the pedestrian is located in the right area of the vehicle head, the vehicle is controlled to turn to the right, and the first section of airbag is recharged and the vehicle is returned to the right when the pedestrian is detected to be located near the extension line of the center line of the engine cover.
Preferably, in step S2, when a collision between the pedestrian and the vehicle body is detected, the gas generator operates again to inflate the first air bag, the gas breaks through the partition between the second air bag and the third air bag, the second air bag and the third air bag are deployed, and the inflation flow of the gas generator ensures sufficient cushioning effect of the third air bag. The second section of the airbag extends in the transverse direction of the automobile, the length of the second section of the airbag is the same as the width of the automobile, the height of the second section of the airbag is 150cm, the third section of the airbag extends in the longitudinal direction of the automobile, the length of the third section of the airbag is 45cm, and the height of the third section of the airbag is 150 cm. The three sections of air bags form a U-shaped air bag wall together, and pedestrians are surrounded in the U-shaped air bag wall.
Preferably, after the pedestrian contacts with the air bag, the pedestrian applies an acting force to the air bag along the advancing direction of the automobile, and since the position of the center of mass of the pedestrian is higher than the height of the connecting point of the air bag and the automobile body, when the second section of air bag is detected to rotate 45 degrees in the longitudinal plane of the automobile by taking the connecting point of the air bag and the automobile body as a base point, the first section of air bag is disconnected from the automobile body, and the air bag is always located between the pedestrian and the ground no matter what motion posture the pedestrian is in. The surface of the second section of the air bag is covered with a film containing quick-drying mucus, the film on the surface of the air bag is broken after colliding with a person after being unfolded, and the mucus flows out to stick the air bag to the human body.
Compared with the prior art, the invention has the beneficial effects that: aiming at the condition that the lower limbs and the buttocks of a person walking at ultra-low speed are always positioned below an engine cover, a U-shaped air bag is placed between the person and the ground, and the air bag is attached to the human body by mucus, so that the person presses the air bag to fall to the ground, the contact of the person and the ground is isolated, the function of protecting the person is achieved, the two-section air bag and the three-section air bag are not directly connected with a gas generator, but can be inflated and unfolded by the gas generator, the gas amount in the air bag is sufficient, and the buffering effect is good.
Drawings
FIG. 1 is a flow chart of the operation of the present invention.
Fig. 2 is a view showing the deployment of the first stage airbag when an accident is unavoidable.
FIG. 3 is a diagram showing the deployment of a two-three airbag when a pedestrian is in contact with a vehicle.
FIG. 4 is a schematic view of pedestrian and airbag positions when the airbag is disconnected from the vehicle body.
Fig. 5 is a top view of all of the airbags after deployment.
Corresponding reference numerals in the figures are: 1-first section of air bag, 2-second section of air bag, 3-third section of air bag, 4-air bag spacing layer (said spacing layer is broken by gas) and 5-quick-drying mucus.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent.
The invention is further described with reference to the following figures and examples
Example 1:
for a car, when the speed of the car is at an ultra-low speed, and a pedestrian is detected to be in front of the car and an accident is unavoidable, the following steps are taken to reduce the damage of the collision of the pedestrian.
S1: the vehicle is fully braked and a pedestrian is detected near the center line of the hood, inflating and deploying the first section of air bag, see fig. 2.
S2: when the first collision between the pedestrian and the vehicle is detected, the gas generator works again, and the two and three sections of air bags are inflated and unfolded in sequence, as shown in figure 3.
S3: the pedestrian is separated from the vehicle body after being impacted, falls to the air bag, and breaks the surface film of the second section of the air bag after being impacted with the air bag to enable quick-drying mucus to flow out, and the air bag is adhered to the body of the pedestrian by the mucus; when the second section of the air bag is detected to rotate by 45 degrees, the first section of the air bag is disconnected from the vehicle body, so that people and the air bag fall to the ground together to achieve the effect of reducing the collision damage of people and the ground, and the figure 4 shows.
The invention provides a device for reducing human-ground collision damage in an ultra-low speed accident. The device is a three-section type air bag which is placed between a person and the ground, and the air bag is attached to the human body through mucus, so that the pedestrian presses the air bag to fall to the ground, and therefore the device can isolate the contact of the person and the ground to protect the pedestrian.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications in the foregoing will occur to those skilled in the art. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (4)
1. The utility model provides an intelligent automobile reduces gasbag of people ground collision damage in ultra low speed accident which characterized in that: the air bag consists of three sections, wherein the first section and the third section form side protection and form U-shaped protection together with the second section of the air bag; the length of the first section of air bag is 50cm, the length of the second section of air bag is equal to the width of the automobile, the length of the third section of air bag is 45cm, and the heights of the three sections of air bags are 150 cm; the surface of the second section of the air bag is covered with a film containing quick-drying mucus, the film on the surface of the air bag is broken after colliding with a person after being unfolded, and the mucus flows out to stick the air bag to the human body; the three sections of air bags share one gas generator, and an interlayer is arranged between the first section of air bag and the second section of air bag; the steps of reducing human collision damage are as follows:
s1: when the automobile detects that the accident is unavoidable, the automobile is completely braked; if the pedestrian is detected to be positioned near the extension line of the center line of the engine cover, inflating the first section of the air bag; if the pedestrian is detected to be positioned near the extension lines on the two sides of the vehicle head, controlling the steering to enable the pedestrian to approach the center line of the engine cover and then re-inflate the first section of air bag and return to the vehicle;
s2: when the collision between the pedestrian and the vehicle is detected, the first section of the air bag is inflated again, and the gas breaks through the interlayer to unfold the second and third sections of the air bags;
s3: when the second section of the air bag is detected to rotate 45 degrees under the action of the human body, the connection between the first section of the air bag and the vehicle body is disconnected, so that the human body and the air bag fall to the ground together.
2. The airbag for reducing human-ground collision damage in the ultra-low speed accident of the intelligent automobile according to claim 1, wherein: the airbag is divided into three sections and is folded below the headlight on the right side of the automobile, and each section shares one gas generator; a partition layer is arranged between the first section of the air bag and the second section of the air bag, and the partition layer prevents gas from flowing to the second section of the air bag after the first section of the air bag is inflated for the first time.
3. The airbag for reducing human-ground collision damage in the ultra-low speed accident of the intelligent automobile according to claim 1, wherein: in step S1, the method for controlling the steering of the vehicle: if the pedestrian is located in the area on the left side of the vehicle head, the vehicle is controlled to turn left, and if the pedestrian is located in the area on the right side of the vehicle head, the vehicle is controlled to turn right until the pedestrian is detected to be located near the extension line of the center line of the engine cover cap and then the vehicle is corrected.
4. The airbag for reducing human-ground collision damage in the ultra-low speed accident of the intelligent automobile according to claim 1, wherein: in step S2, when it is detected that the pedestrian collides with the vehicle for the first time, the gas generator operates again to inflate the first airbag, and the gas rushes into the second and third airbags after the pressure breaks the partition layer, so as to deploy the two airbags.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110233032.6A CN112918424B (en) | 2021-03-01 | 2021-03-01 | Air bag for reducing human-ground collision damage in ultra-low speed accident of intelligent automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110233032.6A CN112918424B (en) | 2021-03-01 | 2021-03-01 | Air bag for reducing human-ground collision damage in ultra-low speed accident of intelligent automobile |
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| CN112918424A CN112918424A (en) | 2021-06-08 |
| CN112918424B true CN112918424B (en) | 2022-06-07 |
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