CN109591754A - A method of people ground collsion damage in protection vehicle people collision accident - Google Patents
A method of people ground collsion damage in protection vehicle people collision accident Download PDFInfo
- Publication number
- CN109591754A CN109591754A CN201910010617.4A CN201910010617A CN109591754A CN 109591754 A CN109591754 A CN 109591754A CN 201910010617 A CN201910010617 A CN 201910010617A CN 109591754 A CN109591754 A CN 109591754A
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- vehicle
- people
- human body
- collsion damage
- chest
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Classifications
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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
-
- 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
- B60R21/38—Protecting non-occupants of a vehicle, e.g. pedestrians using means for lifting bonnets
Abstract
For existing research achievement only by preventing the separation of people's vehicle with protecting people collsion damage, the present invention proposes to pass through move vehicle and is aided with on-vehicle safety equipment, people is protected while allowing human body to fall ground collsion damage.On-vehicle safety equipment includes the air bag that can be lifted engine bonnet and be installed in front bumper in invention.After the accident, the complete braking conditions of vehicle is kept to hit for the first time until human body head and vehicle；Then control car speed so that after vehicle motor the cover along with keep certain distance and travelling forward together between human body；After detecting that human body drops on hood again, hood inclination angle is adjusted according to human body attitude and starts complete abrupt deceleration vehicle again；It detects and ignites safety air bag outside car when human body will turn ground, and keep complete braking conditions until stationary vehicle.The present invention realizes the protection of to people collsion damage from car body energy-absorbing, the change of landing posture and three levels of air bag energy-absorbing.
Description
Technical field
The present invention relates to pedestrian protecting fields, collide damage more particularly, to people in a kind of protection vehicle people's collision accident
The method of wound.
Background technique
Intelligence has become the development trend of future technology.For future automobile, either autonomous driving vehicle
Or wisdom automobile equips big quantity sensor to perceive vehicle external environment and then safe driving automobile, makes vehicle safety, relaxes
It fits, efficiently arrive at the destination.But the complexity for considering traffic, is difficult to think future automobile absolutely not at present under human-subject test
Traffic accident can occur.And in all accident patterns, because vehicle people collision accident and everyone trip are closely related and be strong
Person naturally enough becomes focus to the mortal injury of weak person.It is ground so how to reduce human injury in such accident and become
Study carefully hot spot.
In vehicle people's collision accident the injury of human body from for the first time and the shock of vehicle and then second with ground
It hits.Although injury caused by ground struck can never neglect much studies have shown that Vehicular impact is more serious in general
Slightly, even more so under the low speed.Some researches show that being such as avoided that ground struck is injured when being lower than 40km/h, then it can make people
Body always injures reduction by 2/3.Thus people injury protection be increasingly becoming research hotspot in recent years.
But damage mechanisms, people pass through research discovery impact velocity, pedestrian's speed, step with paying close attention to people mostly for existing research
State, height and last landing position with it is vertical hit ground speed on people collsion damage influence it is significant, but for specific people
The research of injury protection method is seldom.With the having protection people scheme damaged only is seen in a small amount of document, one is by
Headstock setting air bag prevents human body to land, such as 107690399 A of patent CN, a kind of " pedestrains safety protection for vehicle
Method and apparatus "；Second it is to cover covering mucus in hood not allowing it to land to cling human body, such as United States Patent (USP) US
9,340,178 B1, " ADHESIVE VEHICLE FRONT END FOR MITIGATION OF SECONDARY
PEDESTRAN IMPACT".The starting point of these schemes is not allow human body to land after pedestrian-vehicle collision.For at present, more preferably
To be human body final after collision occurs or need to leave vehicle falls ground for the scheme of understanding, after all with the automobile of fast running
" binding " has many worth worried places together.
Noticing existing research achievement discovery human body landing position, with people collsion damage correlation is significant, and human body lands
Posture can be changed by mobile vehicle.In view of future automobile has enough ability real-time monitoring human motion appearances
State, so move vehicle can be passed through and be aided with on-vehicle safety equipment to collide caused damage with preferably protecting people.
Summary of the invention
For existing research achievement only by preventing the separation of people's vehicle with protecting people collsion damage, present invention proposition passes through shifting
Motor-car is simultaneously aided with on-vehicle safety equipment, people is protected while allowing human body to fall ground collsion damage.In the present invention
On-vehicle safety equipment includes the air bag that can be lifted engine bonnet and be installed in front bumper, and invention implementation steps are such as
Under:
S1: after the accident, keep the complete braking conditions of vehicle to the t1 moment；
After the S2:t1 moment, control car speed so that after vehicle motor the cover along and keep certain distance and one between human body
It rises and travels forward；
S3: after detecting that human body drops on hood again, hood inclination angle is adjusted according to human body attitude and is started again
Complete abrupt deceleration vehicle；
S4: detecting and ignite safety air bag outside car when human body will turn ground, and keeps complete braking conditions until vehicle is quiet
Only.
When vehicle people after the accident, keep complete braking conditions the present invention claims vehicle until detecting pedestrian head for the first time
With Vehicular impact；Then by control running velocity make after vehicle motor the cover along with a spacing is kept between human body
From travelling forward together；When dropping to hood again to human body to vehicle detection and covering, engine is adjusted according to human body attitude
The cover inclination angle simultaneously starts complete abrupt deceleration vehicle again, to allow human body with appropriate angle is detached from car body and slides to ground；When detecting
Human body ignites safety air bag outside car when will turn ground, and keeps complete braking conditions until stationary vehicle.It is realized pair with this
People collsion damage protection.
Preferably, at the time of t1 is that human body head collides for the first time with vehicle in step S1.It keeps before time tl
Vehicle is braked completely, it can be ensured that the stroke speed of human body head and vehicle is constant, to guarantee in entire control process not
Change injury of human caused by car body is hit.
Preferably, edge refers to edge and people after vehicle motor the cover at a distance from human body after vehicle motor the cover in step S2
Distance d in the horizontal direction between body chest.Excessive distance d can make engine bonnet not receive the human body fallen.And it is too small
Especially negative d can make human body drop to windshield even roof, and up, people's vehicle interaction time is too long at this time, can not only increase
Add the risk of vehicle injury human body, it is often more important that human body can obtain more kinetic energy from car body, make impact with the ground to increase
Speed, and then increase ground caused by damage risk.
Preferably, in step S2, when speed is lower than 25km/h, edge and human body distance d value after vehicle motor the cover
For after t1 moment human chest to engine bonnet along distance；When speed is higher than 25 and is lower than 35km/h, d value is t1 moment people
Subtract 0.2 meter along distance after body chest to engine bonnet；When speed is higher than 35km/h, d value is t1 moment human chest to hair
Subtract 0.4 meter along distance after motivation the cover.As taken 0 replacement when resulting value is negative in all calculating.Such distance calculating method, energy
Guarantee not accelerate or lack accelerating vehicle as far as possible in control process, only slows down or at the uniform velocity drive a car.
Preferably, car speed calculates acquisition by the following method in step S2:
It is assumed that the distance between edge and body chest positions are d0, vehicle detection to human body chest after certain moment hood of vehicle lid
The speed of service of the portion in the direction x is v20, it is desirable that is adjusted distance to d within the δ t time, then operation of the vehicle within the δ t time is fast
Spending v is
。
For existing research achievement only by preventing the separation of people's vehicle with protecting people collsion damage, present invention proposition passes through shifting
Motor-car is simultaneously aided with on-vehicle safety equipment, people is protected while allowing human body to fall ground collsion damage.In the present invention
On-vehicle safety equipment includes the air bag that can be lifted engine bonnet and be installed in front bumper, and invention implementation steps are such as
Under:
S1: after the accident, keep the complete braking conditions of vehicle to the t1 moment；
After the S2:t1 moment, control car speed so that after vehicle motor the cover along and keep certain distance and one between human body
It rises and travels forward；
S3: after detecting that human body drops on hood again, hood inclination angle is adjusted according to human body attitude and is started again
Complete abrupt deceleration vehicle；
S4: detecting and ignite safety air bag outside car when human body will turn ground, and keeps complete braking conditions until vehicle is quiet
Only.
When vehicle people after the accident, keep complete braking conditions the present invention claims vehicle until detecting pedestrian head for the first time
With Vehicular impact；Then by control running velocity make after vehicle motor the cover along with a spacing is kept between human body
From travelling forward together；When dropping to hood again to human body to vehicle detection and covering, engine is adjusted according to human body attitude
The cover inclination angle simultaneously starts complete abrupt deceleration vehicle again, to allow human body with appropriate angle is detached from car body and slides to ground；When detecting
Human body ignites safety air bag outside car when will turn ground, and keeps complete braking conditions until stationary vehicle.It is realized pair with this
People collsion damage protection.
Preferably, at the time of t1 is that human body head collides for the first time with vehicle in step S1.It keeps before time tl
Vehicle is braked completely, it can be ensured that the stroke speed of human body head and vehicle is constant, to guarantee in entire control process not
Change injury of human caused by car body is hit.
Preferably, edge refers to edge and people after vehicle motor the cover at a distance from human body after vehicle motor the cover in step S2
Distance d in the horizontal direction between body chest.Excessive distance d can make engine bonnet not receive the human body fallen.And it is too small
Especially negative d can make human body drop to windshield even roof, and up, people's vehicle interaction time is too long at this time, can not only increase
Add the risk of vehicle injury human body, it is often more important that human body can obtain more kinetic energy from car body, make impact with the ground to increase
Speed, and then increase ground caused by damage risk.
Preferably, in step S2, when speed is lower than 25km/h, edge and human body distance d value after vehicle motor the cover
For after t1 moment human chest to engine bonnet along distance；When speed is higher than 25 and is lower than 35km/h, d value is t1 moment people
Subtract 0.2 meter along distance after body chest to engine bonnet；When speed is higher than 35km/h, d value is t1 moment human chest to hair
Subtract 0.4 meter along distance after motivation the cover.As taken 0 replacement when resulting value is negative in all calculating.Such distance calculating method, energy
Guarantee not accelerate or lack accelerating vehicle as far as possible in control process, only slows down or at the uniform velocity drive a car.
Preferably, car speed calculates acquisition by the following method in step S2:
It is assumed that the distance between edge and body chest positions are d0, vehicle detection to human body chest after certain moment hood of vehicle lid
The speed of service of the portion in the direction x is v20, it is desirable that is adjusted distance to d within the δ t time, then operation of the vehicle within the δ t time is fast
Spending v is
。
Preferably, it detects human body to be dropped on hood again in step S3 and refers to human chest and engine bonnet again
Contact.Using chest as judge index, can further avoid being the pact for reaching distance d in step S2 in low speed collision accident
Beam condition and accelerating vehicle increase body kinetic energy and then with increasing people impact velocity.Under low speed impact, after engine bonnet
It has been contacted again with engine bonnet along human chest when being greater than d with distance between human chest, at this time then without continuing to walk
Rapid S2 can directly start step S3, so avoid causing because accelerating vehicle human body from car body from obtain it is more dynamic
Energy.
Preferably, if human chest-cephalad direction is consistent with vehicle forward direction in step S3.Show in such cases
Human body head can first land if abrupt deceleration vehicle, make the engine bonnet inclination angle to be so engine bonnet forward position need to be lifted
0 °, then complete abrupt deceleration vehicle makes one, vehicle is initially separated, and human body presentation level shape of dishing out is fallen to the ground.Because human body finally leaves
Vehicle is that level is dished out, then it is freely to land movement without initial velocity in vertical direction, this can significantly reduce human body Vertical Square
To landing speed.And some researches show that people damaged it is significant related to vertical direction impact velocity, so vertical direction is fast
The reduction of degree can reduce damage.
Preferably, in step S3 if detect human chest-cephalad direction and vehicle heading on the contrary, if show this
The positions such as human body lower limbs, buttocks can land prior to head in the case of kind.Engine bonnet inclination angle need not be changed at this time, braked completely
Vehicles separation people, Che Zeke, so that human body is sat to the ground with the posture slid.Because being people when human body finally leaves vehicle along hair
Motivation the cover freely slides, and human body can be sat to the ground with the posture of a similar sitting posture, it is contemplated that the positions such as human body lower limbs, buttocks
Collision energy can be absorbed, human body collsion damage will obviously be reduced to the ground by so falling.
Preferably, the height for referring to one of human body head, chest or buttocks when human body will turn ground is detected in step S4
Degree is lower than the engine bonnet forward position height moment.Firing air bag at this time can not only prevent air bag from impacting human body, and it is too early also to can avoid
Firing air bag and the movement for interfering vehicle.
Preferably, safety air bag outside car is mounted in vehicle front bumper in step S4, apparatus to cause bursting and automobile center console
Along ground clearance with high, length 1.5m under the same wide and front bumper of connection, air bag and vehicle.
Compared with prior art, the beneficial effect of technical solution of the present invention is: making vehicle and landing by move vehicle
Preceding human body carries out second of contact to absorb a part of human body tenesmus energy, is inclined at the same time by changing engine bonnet
Angle and change human body landing posture with further reduced people collsion damage risk, buffered finally by an on-vehicle safety air bag
It contacts for the first time to people, so that from car body energy-absorbing, landing posture changes and three levels of air bag energy-absorbing are realized to people
The protection of 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 front view after igniting.
Fig. 3 is the air bag side view after igniting.
Fig. 4 is the motion process schematic diagram of vehicle, human body after accident in embodiment 1.
Wherein, corresponding appended drawing reference in figure are as follows: 1- vehicle front bumper, 2- air bag, air bag after 3- ignites
Width, air bag height after 4- ignites, air bag length after 5- ignites.
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
It is illustrated in figure 4 the motion process schematic diagram of vehicle, human body after accident, t0 moment collision accident brakes vehicle after occurring completely
Until the t1 moment；Then human body is spilled over, and vehicle then keeps with human body distance being to move forward together with d；It is detected when to t2
When human body drops to hood again and covers, detect that human chest-cephalad direction is consistent with direction of vehicle movement, so raise
Engine bonnet forward position makes its inclination angle 0；To the t4 moment detect human body will turn ground so ignite 2 air bags, it
Braking completely always is until stationary vehicle afterwards.
It is as shown in Figure 2,3 respectively the front view and side view of air bag after being ignited in the present invention, substitute after 3 ignition
Bag beam degree needs and Che Tongkuan, and air bag is long after air bag height is ignited with the same height of 1 vehicle front bumper lower edge, 5 after 4 ignition
Degree is 1.5 meters.
As shown in Figure 1, the present invention provide it is a kind of protection vehicle people collision accident in people collsion damage method, by following
Step is realized:
S1: after the accident, the complete braking conditions of vehicle is kept to hit the t1 moment of vehicle for the first time to human body head.
After the S2:t1 moment, control car speed so that after vehicle motor the cover along between human chest in level side
It travels forward to holding certain distance d and together.
Wherein, it is along the calculation method with human body distance d value after vehicle motor the cover: when speed is lower than 25km/h
When, d value be t1 moment human chest to engine bonnet after along distance；When speed is higher than 25 and is lower than 35km/h, d value is t1
Subtract 0.2 meter along distance after moment human chest to engine bonnet；When speed is higher than 35km/h, d value is t1 moment human body chest
Subtract 0.4 meter along distance behind portion to engine bonnet.As taken 0 replacement when resulting value is negative in all calculating.
Wherein, car speed calculates acquisition by the following method: it is assumed that edge and human body after certain moment hood of vehicle lid
The distance between chest locations are d0, and the speed of service of the vehicle detection to human chest in the direction x is v20, it is desirable that in the δ t time
Interior to adjust distance to d, then speed of service v of the vehicle within the δ t time is
。
S3: after detecting that human body drops on hood again, hood inclination angle is adjusted according to human body attitude and is started
Complete abrupt deceleration vehicle again.
In this embodiment, t2 moment human chest is contacted again with engine bonnet, detects human chest-head at this time
Portion direction is consistent with the vehicle method of operation, shows that human body head can first collide ground, so by adjusting engine bonnet inclination angle
Make 0 ° of its inclination angle, to allow human body is horizontal to dish out.
S4: detecting and ignite safety air bag outside car when human body will turn ground, and keeps complete braking conditions until vehicle
It is static.
At the t4 moment, firing safety air-bag when human body head is lower than engine bonnet forward position height keeps system completely later
It moves until t5 moment stationary vehicle.
The invention proposes people in a kind of protection vehicle people collision accident the method for collsion damage, this method pass through locomotive
Make vehicle and the human body before landing carry out contact for second to absorb a part of human body to drop energy, pass through at the same time
Change engine bonnet inclination angle and change human body landing posture with further reduced people collsion damage risk, finally by one
On-vehicle safety air bag contacts with buffering people for the first time, thus from car body energy-absorbing, the change of landing posture and air bag energy-absorbing three
Level realizes the protection of to people 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 (9)
1. it is a kind of protection vehicle people collision accident in people collsion damage method, it is characterised in that: by move vehicle and it is auxiliary it
With on-vehicle safety equipment, protection people ground collsion damage while allowing human body to fall ground, on-vehicle safety equipment in the present invention
Including the air bag that can be lifted engine bonnet and be installed in front bumper, specific implementation step is as follows:
S1: after the accident, keep the complete braking conditions of vehicle to the t1 moment；
After the S2:t1 moment, control car speed so that after vehicle motor the cover along and keep certain distance and one between human body
It rises and travels forward；
S3: after detecting that human body drops on hood again, hood inclination angle is adjusted according to human body attitude and is started again
Complete abrupt deceleration vehicle；
S4: detecting and ignite safety air bag outside car when human body will turn ground, and keeps complete braking conditions until vehicle is quiet
Only.
2. it is according to claim 1 it is a kind of protection vehicle people collision accident in people collsion damage method, it is characterised in that:
At the time of t1 is that human body head collides for the first time with vehicle.
3. it is according to claim 1 it is a kind of protection vehicle people collision accident in people collsion damage method, it is characterised in that:
In step S2 after vehicle motor the cover along refer at a distance from human body after vehicle motor the cover along between human chest in water
Square to distance d.
4. it is according to claim 3 it is a kind of protection vehicle people collision accident in people collsion damage method, it is characterised in that:
When speed is lower than 25km/h, edge and human body distance d value are t1 moment human chest to engine after vehicle motor the cover
Along distance after the cover；When speed be higher than 25 and be lower than 35km/h when, d value be t1 moment human chest to engine bonnet after along away from
From subtracting 0.2 meter；When speed is higher than 35km/h, d value is to subtract 0.4 meter along distance after t1 moment human chest to engine bonnet,
As taken 0 replacement when resulting value is negative in all calculating.
5. it is according to claim 1 it is a kind of protection vehicle people collision accident in people collsion damage method, it is characterised in that:
Running velocity calculates acquisition by the following method in step S2:
It is assumed that distance in the horizontal direction is d0, vehicle detection between certain moment vehicle front bumper forward position and body chest positions
It is v20 to the human chest speed of service in the horizontal direction, it is desirable that adjust distance to d within the δ t time, then vehicle is in δ t
In speed of service v be
。
6. it is according to claim 1 it is a kind of protection vehicle people collision accident in people collsion damage method, it is characterised in that:
It detects that human body is dropped to again on hood in step S3 and refers to that human chest is contacted again with engine bonnet.
7. it is according to claim 1 it is a kind of protection vehicle people collision accident in people collsion damage method, it is characterised in that:
The method for adjusting hood inclination angle according to human body attitude in step S3 is as follows:
If detecting that human chest-cephalad direction is consistent with vehicle forward direction, lifting engine bonnet forward position makes engine
The cover inclination angle is 0 °；If chest-cephalad direction and vehicle heading on the contrary, if do not change engine bonnet inclination angle.
8. it is according to claim 1 it is a kind of protection vehicle people collision accident in people collsion damage method, it is characterised in that:
Step S4 detects the height for referring to one of human body head, chest or buttocks when human body will turn ground lower than before engine bonnet
Along the height moment.
9. it is according to claim 1 it is a kind of protection vehicle people collision accident in people collsion damage method, it is characterised in that:
Safety air bag outside car is mounted in vehicle front bumper in step S4, and apparatus to cause bursting is connect with automobile center console, air bag and vehicle
Along ground clearance with high, length 1.5m under same wide and front bumper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910010617.4A CN109591754B (en) | 2019-01-07 | 2019-01-07 | Method for protecting human-ground collision damage in human-ground collision accident |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910010617.4A CN109591754B (en) | 2019-01-07 | 2019-01-07 | Method for protecting human-ground collision damage in human-ground collision accident |
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| CN109591754A true CN109591754A (en) | 2019-04-09 |
| CN109591754B CN109591754B (en) | 2021-03-26 |
Family
ID=65964977
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111572491A (en) * | 2020-05-01 | 2020-08-25 | 东风汽车集团有限公司 | Active hood system based on scene control |
| CN112550526A (en) * | 2020-12-21 | 2021-03-26 | 长沙理工大学 | Intelligent vehicle head design method for protecting human-ground collision damage |
| 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 |
| CN112918424A (en) * | 2021-03-01 | 2021-06-08 | 长沙理工大学 | Air bag for reducing human-ground collision damage in ultra-low speed accident of intelligent automobile |
| CN112918470A (en) * | 2021-03-01 | 2021-06-08 | 长沙理工大学 | Intelligent automatic emergency braking method for protecting pedestrians |
| CN117438094A (en) * | 2023-11-02 | 2024-01-23 | 厦门理工学院 | Pedestrian head injury prediction method and prediction system thereof |
| CN117438094B (en) * | 2023-11-02 | 2024-05-17 | 厦门理工学院 | Pedestrian head injury prediction method and prediction system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111572491A (en) * | 2020-05-01 | 2020-08-25 | 东风汽车集团有限公司 | Active hood system based on scene control |
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| CN117438094B (en) * | 2023-11-02 | 2024-05-17 | 厦门理工学院 | Pedestrian head injury prediction method and prediction system thereof |
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