CN109591755A - A kind of fast car protection people collsion damage method - Google Patents
A kind of fast car protection people collsion damage method Download PDFInfo
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- CN109591755A CN109591755A CN201910030006.6A CN201910030006A CN109591755A CN 109591755 A CN109591755 A CN 109591755A CN 201910030006 A CN201910030006 A CN 201910030006A CN 109591755 A CN109591755 A CN 109591755A
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- human body
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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
For on going result only by preventing people's vehicle from separating with protecting people collsion damage from headstock, the present invention propose to pass through move vehicle and be aided be installed on roof after edge fallUThe method that shape sack-like air bag catches pedestrian from the tailstock to collide with preventing people.When fast car detects that vehicle people's collision accident is inevitable, braking is until head and car body are hit completely；Thereafter control vehicle makes roof forward position keep certain distance to travel forward simultaneously with human body；When detect human body be higher than roof when, firing safety air-bag and control vehicle make rear window forward position and human body holding certain distance travel forward simultaneously；Start braking completely after detecting that human body and air bag contact until stationary vehicle.The present invention catches the human body of tenesmus by control vehicle and using air bag; moment human body impact force suffered by horizontal and vertical direction is caught to reduce; and air bag wraps up human body, collides with thoroughly preventing people, with thereby protecting the people under high speed impact collsion damage.
Description
Technical field
The present invention relates to pedestrian protecting field, more particularly, to a kind of fast car protection people the side of collsion damage
Method.
Background technique
Vehicle people collision accident is due to the daily life with everyone is closely related by public concern.Multiply relative to car
Member, pedestrian is in accident because the shock by hard car body is easier by mortal injury.Human body is in vehicle people's collision accident
Injury is mainly derived from hits with the shock of car body and thereafter with second of ground for the first time.Existing research show no matter
Under high speed or low speed, it is all more serious that car body hits caused injury of human, but ground struck also can not be ignored under the low speed.
More studies have found that, when speed is lower than 40km/h, human body is suffered total in accident if being avoided that ground struck damage
Injury can reduce by 2/3.Therefore existing research mostly pay close attention under low speed impact surface damage, but then very to the research of high-speed impact
It is few.
Although human body is more serious by the injury of car body under high-speed impact, human body is because suffered by ground struck under high-speed impact
Injury also be can not ignore.Under high-speed impact, the lethality of people is not 100%, no matter from humanistic angle or from lethal general
Rate is seen, the pedestrian under high-speed impact is protected to be still the project that is worth and must study.In this case, it is reasonable to phase
Letter is as can reduce high-speed impact servant ground collsion damage, and to reducing, the injury suffered in accident of entire human body is valuable.
Currently, about people the research achievement of collsion damage means of defence is few both at home and abroad, people are with more focusing on people
The research of collsion damage mechanism, only a small amount of research achievement are damaged from the discussions such as mucus type shell, headstock air bag protection people
The method of wound.Mucus type shell is proposed by 9340178 B1 of patent US, is after the accident clung human body not by headstock mucus
Allow it to land；Headstock air bag is proposed by 107690399 A of patent CN, after the accident by changing headstock air bag
Air pressure replaces ground struck to allow air bag to hit.But under high-speed impact, human body can be obtained from car body it is one very big to
The speed of oblique upper clings human body by force in such cases or only probably is difficult to protect pedestrian by headstock air bag, needs
More protecting human body schemes.
In view of future automobile has enough abilities monitoring human body real time position, at this time as can passing through mobile vehicle and auxiliary
Human body is caught with on-vehicle safety equipment, then can collide with avoiding people completely, with just reducing people naturally collsion damage.For sedan-chair
For vehicle, there are headstock (windshield and engine bonnet), roof and the tailstock (rear window) in the position that can catch human body.Note
The restricted dynamic influence of vehicle must suitably accelerate just catch up with the pedestrian to dish out under anticipating to high-speed impact, need good control plan at this time
It slightly just can guarantee the vehicle energy non-conducting generated by acceleration or be transmitted on human body less, therefore headstock connects feasible but need to well control
System strategy；The sharpest edges that roof connects are that human body falling head is minimum, so to be converted into kinetic energy fewer for its gravitional force, but
Difficulty is to need good car kits to guarantee not fall after human body and roof collide；And can both it guarantee if being connect with the tailstock
Human body tenesmus height it is not high, and can develop very easily be installed on roof after edge fallUShape sack-like air bag, naturally may be used
With preferred " meeting people " position collided with becoming protection people.
Summary of the invention
For existing scheme only by preventing people's vehicle from separating with protecting people collsion damage, a kind of fast car guarantor from headstock
Protect people collsion damage method, propose by move vehicle and be aided be installed on roof after edge fallUShape sack-like air gas
Capsule catches pedestrian from the tailstock to collide with preventing people.Invention implementation steps are as follows:
S1: when detecting that accident is inevitable, vehicle is kept to be braked completely to the t1 moment；
After the S2:t1 moment, car speed is controlled so as to keep certain distance in the horizontal direction between roof forward position and human chest
It travels forward together；
S3: if detect maximum height that human body is dished out no more than roof height, braking is until stationary vehicle completely；
S4: if detect that human body integral position is higher than roof, firing safety air-bag simultaneously controls car speed to guarantee human body
Chest keeps certain distance with rear window forward position in the horizontal direction and travels forward together；
S5: after detecting that human body is contacted with air bag, start braking completely until stationary vehicle.
When detecting that vehicle people's collision accident is inevitable, the present invention claims vehicles to keep braking completely until the t1 moment；
Then by control car speed to keep in the horizontal direction between roof forward position and human chest certain distance and together to
Preceding movement；When such as detecting maximum height that human body is dished out no more than roof height, braking is until stationary vehicle completely；Such as inspection
When measuring human body integral position higher than roof, firing safety air-bag simultaneously controls car speed to guarantee human chest and rear window
Forward position keeps certain distance in the horizontal direction and travels forward together；After detecting that human body and air bag contact, start
Full application of brake is until stationary vehicle.Pedestrian is caught by sack-like air bag to prevent it from falling ground realization and to people collide
The protection of damage.
Preferably, at the time of t1 refers to that human body head and vehicle are hit for the first time in step S1；In the individual case of pole because by shoulder,
The positions such as upper limb influence head and do not hit directly with vehicle, at the time of t1 refers to that human body is dished out for the first time by vehicle at this time.Before t1
Vehicle is kept to brake completely, it can be ensured that the stroke speed of human body and vehicle is constant, to guarantee in entire control process not
Change the injury of human caused by car body is hit.
Preferably, it is the vector that successively decreases that roof forward position keeps distance d in the horizontal direction between human chest in step S2.
The value of d according to human chest terrain clearance h1, roof height h2, t1 moment roof forward position to chest horizontal distance d1 and t1 when
The height h20 for carving chest is codetermined
Command range d in this way not only can guarantee that human body was gradually drawn close to roof but also without sharply changing in whole process
Become the speed of service of vehicle and is avoided that human body in the process by the shock again of windshield.
Preferably, car speed calculation method is as follows in step S2:
It is assumed that the distance between certain moment roof forward position and body chest positions are d0, vehicle detection to human chest is in the direction x
The speed of service be v20, it is desirable that distance is adjusted to d within the δ t time, then speed of service v of the vehicle within the δ t time is
。
Preferably, the maximum height moment for detecting that human body is dished out in step S3 refers to that human chest is few in vertical speed
In or the null moment.For this Crash characteristics of car high-speed impact pedestrian, the maximum height that human body is dished out cannot
The case where more than roof height, is extremely rare, but this rare cases occurs in individual case in order to prevent and hit vehicle acceleration
Human body is hit, therefore still needs to detect this.
Preferably, it is detected in step S4 and refers to human body head, chest, buttocks and thigh when human body integral position is higher than roof
The height at position is above roof.
Preferably, human chest with rear window forward position keeps distance d2 according to such as lower section in the horizontal direction in step S4
Method determines:
When detect chest vertical direction speed be greater than zero when, show human body also in ascent stage, d2 is calculated by following formula
It obtains
When detecting that speed of the chest in vertical direction starts to be less than or equal to zero, show that human body is begun to decline, d2 is under at this time
Formula, which calculates, to be obtained
Hmax is the maximum height of human chest in formula, and h1 is human chest terrain clearance, h2 is roof height, d3 is that roof is long
Degree.The distance is controlled in this manner, can carry out feed speed control sharply to avoid to vehicle, and can ensure that human body is final
Fall to rear window advanced position.
Preferably, car speed calculation method is as follows in step S4:
It is assumed that the distance between certain moment rear window forward position and body chest positions are d0, vehicle detection is to human chest in x
The speed of service in direction is v21, it is desirable that is adjusted distance to d2 within the δ t time, then speed of service v of the vehicle within the δ t time
For
By above formula it can be found that when human body is close to rear window forward position, people, vehicle speed in the horizontal direction will reach unanimity,
Mean that impact force suffered by its horizontal direction will be greatly lowered when human body collides car body again.
Preferably, air bag is mounted in roof at rear window forward position in step S4, apparatus to cause bursting and vehicle
Console connection, air bag and vehicle are same wide, consistent with rear window length, are in fallUShape is bag-shaped, with rear window contact portion compared with
Thickness, non-contact part are relatively thin.
Preferably, it detects that human body is contacted with air bag in step S5 and refers to human buttock, chest or head and substitute
Capsule contact.Being influenced human body by air bag at this time, speed necessarily reduces in the horizontal direction, by braking system coordination time effects vehicle
Though beginning is braked completely but its speed declines not in time, people is thus caused to move backward relative to vehicle, in addition the work of gravity
With, it can be ensured that human body rolls into sack-like air bag.
Compared with prior art, the beneficial effect of technical solution of the present invention is: by move vehicle and being mounted on roof and leans on
Nearly rear window advanced position fallsUShape sack-like air bag catches the human body of tenesmus, is caught by regulation speed to reduce
Moment human body is in the horizontal direction by the impact force of car body；Existed by reducing human body tenesmus height to which moment human body is caught in reduction
Impact force of the vertical direction by car body；Wrapping human body by air bag does not allow its born to thoroughly collide with preventing people,
With thereby protecting the people under high speed impact collsion damage.
Detailed description of the invention
Fig. 1 is flow chart of the method for the present invention.
Fig. 2 is the air bag main view after igniting.
Fig. 3 is the air bag top view after igniting.
Fig. 4 is the air bag side view after igniting.
Wherein, corresponding appended drawing reference in figure are as follows: 1- roof, 2- rear window, air bag after 3- ignites, 4- air bag peace
Holding position, 5- rear bumper, 6- vehicle width.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；
The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples.
Embodiment 1
Following step is taken when it detects that vehicle people collision is inevitable during high speed driving for a certain Future Car
Suddenly with protecting people collsion damage:
S1: when detecting that accident is inevitable, complete abrupt deceleration vehicle is got started until it detects human body head and vehicle
The t1 moment of shock.
After the S2:t1 moment, control car speed so as to keep certain in the horizontal direction between roof forward position and human chest
Distance simultaneously travels forward together.
Wherein, roof forward position keeps distance d according to human chest terrain clearance in the horizontal direction between human chest
H1, roof height h2, t1 moment roof forward position to chest horizontal distance d1 and t1 moment chest height h20 codetermine
。
And car speed is then obtained by following calculation method:
It is assumed that the distance between certain moment roof forward position and body chest positions are d0, vehicle detection to human chest is in the direction x
The speed of service be v20, it is desirable that distance is adjusted to d within the δ t time, then speed of service v of the vehicle within the δ t time is
。
S3: if detecting that human chest human body throwing elevation when vertical speed is less equal than zero still fails
More than roof, then braking completely is until stationary vehicle.Otherwise step S4 is carried out.
S4: when detecting that human body head, chest, buttocks and thigh position are above roof, firing safety air-bag is simultaneously controlled
Car speed processed keeps certain distance in the horizontal direction to guarantee human chest with rear window forward position and travels forward together；
Wherein, chest keeps distance d2 to determine as follows in the horizontal direction with rear window forward position:
When detect chest vertical direction speed be greater than zero when
When detecting that speed of the chest in vertical direction starts to be less than or equal to zero
Hmax is the maximum height of human chest in formula, and h1 is human chest terrain clearance, h2 is roof height, d3 is that roof is long
Degree.
And car speed is obtained by following calculation method:
It is assumed that the distance between certain moment rear window forward position and body chest positions are d0, vehicle detection is to human chest in x
The speed of service in direction is v21, it is desirable that is adjusted distance to d2 within the δ t time, then speed of service v of the vehicle within the δ t time
For
。
S5: after detecting that human body is contacted with air bag, start braking completely until stationary vehicle.
The invention proposes a kind of fast car protection people the method for collsion damage, this method pass through move vehicle and peace
The falling at after roofUShape sack-like air bag catches the human body of tenesmus, catches the moment by regulation speed to reduce
Human body is in the horizontal direction by the impact force of car body；Moment human body is caught vertical by reducing human body tenesmus height to reduce
Impact force of the direction by car body；Wrapping human body by air bag does not allow its born to thoroughly collide with preventing people, with this
With protecting the people under high speed impact collsion damage.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of fast car protection people collsion damage method, it is characterised in that: by move vehicle and with being mounted on vehicle
Edge falls behind topUShape air bag catches human body not allow human body to fall ground, and the protection of to people collsion damage is realized with this,
Specific implementation step is as follows:
S1: when detecting that accident is inevitable, vehicle is kept to be braked completely to the t1 moment；
After the S2:t1 moment, car speed is controlled so as to keep certain distance in the horizontal direction between roof forward position and human chest
It travels forward together；
S3: if detect maximum height that human body is dished out no more than roof height, braking is until stationary vehicle completely；
S4: if detect that human body integral position is higher than roof, firing safety air-bag simultaneously controls car speed to guarantee human body
Chest keeps certain distance with rear window forward position in the horizontal direction and travels forward together；
S5: after detecting that human body is contacted with air bag, start braking completely until stationary vehicle.
2. a kind of fast car protection people according to claim 1 collsion damage method, it is characterised in that: step S1
At the time of middle t1 refers to that human body head and vehicle are hit for the first time；Because being influenced head not by positions such as shoulder, upper limbs in the individual case of pole
It is directly hit with vehicle, then at the time of t1 refers to that human body is dished out for the first time by vehicle.
3. a kind of fast car protection people according to claim 1 collsion damage method, it is characterised in that: step S2
It is the vector that successively decreases that middle roof forward position keeps distance d in the horizontal direction between human chest, and the value of d is liftoff according to human chest
Height h1, roof height h2, t1 moment roof forward position to chest the height h20 of horizontal distance d1 and t1 moment chest determine jointly
It is fixed
。
4. a kind of fast car protection people according to claim 1 collsion damage method, it is characterised in that: step S2
Middle car speed calculates acquisition by the following method:
It is assumed that the distance between certain moment roof forward position and body chest positions are d0, vehicle detection to human chest is in the direction x
The speed of service be v20, it is desirable that distance is adjusted to d within the δ t time, then speed of service v of the vehicle within the δ t time is
。
5. a kind of fast car protection people according to claim 1 collsion damage method, it is characterised in that: step S3
In detect that maximum height moment that human body is dished out refers to human chest at the time of vertical speed is less equal than zero.
6. a kind of fast car protection people according to claim 1 collsion damage method, it is characterised in that: step S4
In detect human body integral position be higher than roof when refer to that human body head, chest, buttocks and the height at thigh position are above roof
When.
7. a kind of fast car protection people according to claim 1 collsion damage method, it is characterised in that: step S4
Middle human chest keeps distance d2 to determine as follows in the horizontal direction with rear window forward position:
When detect chest vertical direction speed be greater than zero when
When detecting that speed of the chest in vertical direction starts to be less than or equal to zero
Hmax is the maximum height of human chest in formula, and h1 is human chest terrain clearance, h2 is roof height, d3 is that roof is long
Degree.
8. a kind of fast car protection people according to claim 1 collsion damage method, it is characterised in that: step S4
Middle car speed calculation method is as follows:
It is assumed that the distance between certain moment rear window forward position and body chest positions are d0, vehicle detection is to human chest in x
The speed of service in direction is v21, it is desirable that is adjusted distance to d2 within the δ t time, then speed of service v of the vehicle within the δ t time
For
。
9. a kind of fast car protection people according to claim 1 collsion damage method, it is characterised in that: step S4
Middle air bag is mounted in roof at rear window, and apparatus to cause bursting is connect with vehicle centre console, and air bag and vehicle are same wide,
It is consistent with rear window length, inUShape is bag-shaped, and thicker with rear window contact portion, non-contact part is relatively thin.
10. a kind of fast car protection people according to claim 1 collsion damage method, it is characterised in that: step
It detects that human body is contacted with air bag in S5 and refers to that one of human buttock, chest or head are contacted with air bag.
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|---|---|---|---|
| CN201910030006.6A CN109591755B (en) | 2019-01-14 | 2019-01-14 | Method for protecting human-ground collision damage of high-speed car |
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|---|---|---|---|
| CN201910030006.6A CN109591755B (en) | 2019-01-14 | 2019-01-14 | Method for protecting human-ground collision damage of high-speed car |
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| CN109591755B CN109591755B (en) | 2021-02-19 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112572378A (en) * | 2020-12-14 | 2021-03-30 | 长沙理工大学 | Intelligent vehicle motion control method for protecting human-ground collision damage |
| CN112606833A (en) * | 2020-12-21 | 2021-04-06 | 长沙理工大学 | Model prediction control-based intelligent vehicle motion control method for protecting human-ground collision damage |
| CN112918470A (en) * | 2021-03-01 | 2021-06-08 | 长沙理工大学 | Intelligent automatic emergency braking method for protecting pedestrians |
| CN112918469A (en) * | 2021-03-01 | 2021-06-08 | 长沙理工大学 | Automatic emergency braking system with active and passive safety function for pedestrians |
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| CN112606833A (en) * | 2020-12-21 | 2021-04-06 | 长沙理工大学 | Model prediction control-based intelligent vehicle motion control method for protecting human-ground collision damage |
| CN112918470A (en) * | 2021-03-01 | 2021-06-08 | 长沙理工大学 | Intelligent automatic emergency braking method for protecting pedestrians |
| CN112918469A (en) * | 2021-03-01 | 2021-06-08 | 长沙理工大学 | Automatic emergency braking system with active and passive safety function for pedestrians |
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|---|---|
| CN109591755B (en) | 2021-02-19 |
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