CN110395214A - The front bumper outside plate system and method for mitigation traffic accident based on human bioequivalence - Google Patents
The front bumper outside plate system and method for mitigation traffic accident based on human bioequivalence Download PDFInfo
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- CN110395214A CN110395214A CN201910845617.6A CN201910845617A CN110395214A CN 110395214 A CN110395214 A CN 110395214A CN 201910845617 A CN201910845617 A CN 201910845617A CN 110395214 A CN110395214 A CN 110395214A
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- Prior art keywords
- outside plate
- front bumper
- human body
- human
- electromagnet
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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
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
-
- 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
- B60R19/48—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds
-
- 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
-
- 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
- B60R2021/343—Protecting non-occupants of a vehicle, e.g. pedestrians using deformable body panel, bodywork or components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
- B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
- B60R2300/8033—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for pedestrian protection
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multimedia (AREA)
- Traffic Control Systems (AREA)
Abstract
Problem to be solved by this invention is impact force when how to cut down traffic accidents between pedestrian and front bumper outside plate.The front bumper outside plate system of mitigation traffic accident based on human bioequivalence, including human bioequivalence end, front bumper outside plate and buffer gear, human bioequivalence end is Computer Vision Recognition end or infrared induction sensor, whether there is pedestrian in a certain range in front in the real-time detection vehicle traveling process of human bioequivalence end, buffer gear is located in front bumper outside plate, including electromagnet, permanent magnet and buffer body, permanent magnet and buffer body are fixed together, electromagnet is fixed on the inside of front bumper outside plate, the switch of electromagnet is electronic switch a, the control signal of the control section connection of the electronic switch is human bioequivalence end, the electronic switch by control sections in series between the circuit that power supply and electromagnet are constituted.Human bioequivalence end identifies pedestrian, energy effective protection pedestrian, especially suitable for automatic driving technical field in real time.
Description
Technical field
The present invention relates to field of intelligent transportation technology, are based especially on the front bumper of the mitigation traffic accident of human bioequivalence
Outside plate system and method.
Background technique
The front/rear collision bumper of general automobile is all made of plastics, which is by outside plate, padded coaming and cross
Beam three parts composition.Wherein outside plate and padded coaming are made of plastic, and crossbeam is stamped to form U-lag with flat cold-rolled sheet；Outside plate and
Padded coaming is attached to crossbeam.Present invention is particularly directed to front bumper outside plates.
When pedestrian is with car collision, usually pedestrian lower leg is bumped against on bumper, and head and upper body bump against bumper glass
On, bumper has certain buffer function to impact on legs, but the shock of bumper glass buffering considers not enough.
Currently, generally believe that bumper rigidity is little, it is not serious to human impact's damage, therefore without abundant adequate attention
Buffer gear when bumper impact human body.But when protecting pedestrian and car collision, usually pedestrian lower leg bumps against front bumper
On outside plate, it is very easy to generate the serious consequences such as fracture, therefore be badly in need of designing effective front bumper outside plate buffer gear.
Summary of the invention
Problem to be solved by this invention is impact force when how to cut down traffic accidents between pedestrian and front bumper outside plate.
The front bumper outside plate system of mitigation traffic accident based on human bioequivalence, including human bioequivalence end, front bumper
Outside plate and buffer gear, human bioequivalence end are Computer Vision Recognition end or infrared induction sensor, and human bioequivalence end is real-time
Whether there is pedestrian in a certain range in front in detection vehicle traveling process, buffer gear is located in front bumper outside plate, including electricity
Magnet, permanent magnet and buffer body, permanent magnet and buffer body are fixed together, and electromagnet is fixed in front bumper outside plate
Side, the switch of electromagnet are electronic switch a, and the control signal of the control section connection of the electronic switch is human bioequivalence end, should
Electronic switch by control sections in series between the circuit that power supply and electromagnet are constituted, usually, permanent magnet and electromagnetism iron phase
Mutually attract, buffer body is located in front bumper outside plate；After human bioequivalence end recognizes human body, identification signal is fed back into electron
Switch a, electronic switch a are connected, so that electromagnet generates magnetism, mutually exclusive with permanent magnet, buffer body is pushed out to preceding guarantor
Outside dangerous thick stick outside plate, when automobile impacting human body, buffer body contacts human body at once, by the repulsive force between electromagnet and permanent magnet
Impact buffer function is played with buffer body itself.
Preferably, usually, on the outside of buffer body on the outside of front bumper outside plate in the same plane；When human bioequivalence end identifies
To after human body, buffer body is interspersed with from the gap on the outside of front bumper outside plate.
Preferably, the power supply of electromagnet is vehicle power supply, and permanent magnet is ndfeb magnet.
It preferably, further include an electronic switch b, the control signal of the control section connection of the electronic switch is speed,
When speed be greater than a certain speed when, the electronic switch connect, the electronic switch by control sections in series vehicle power supply and electricity
Between the circuit that magnet is constituted.
Preferably, when speed is greater than 10km/h, electronic switch b is connected.
Preferably, the System Utilization Procedure is as follows: a. Computer Vision Recognition end is according to the video of shooting, and extract real-time is simultaneously
Identify the human body head in video；B. due to human body head in video image shared pixel ratio size and its distance calculation
Visual identity end distance at inverse correlation, therefore, can pixel ratio size according to shared by it determine the distance between itself and automobile；
C. when the distance between human body and automobile it is a certain apart from it is interior when, by identification signal by acoustooptic prompt driver, make it
Measures to keep clear is taken, while identification signal is fed back into electronic switch a, electronic switch a is connected, so that electromagnet generates magnetism,
Mutually exclusive with permanent magnet, bumper closes dynamics reduction；D. when unidentified arrive in human body certain time period, identification signal
It disappears, electronic switch a is closed, and permanent magnet and electromagnet attract each other, and bumper closes.
Preferably, a certain distance range is 1-10m, and the distance and speed inverse correlation.
Preferably, if the distance between human body and automobile are d, then d=180s/ (r β π), at this point, Computer Vision Recognition end
It is mounted on immediately ahead of automobile, the distance between human body and Computer Vision Recognition end as the distance between human body and automobile,
Middle r is human body head diameter shared pixel ratio size in video image, is calculated by computer, Computer Vision Recognition
End visual angle is β, is Computer Vision Recognition end preset parameter, human body head diameter s, it is one that human body head size, which is not much different,
Constant.
Preferably, a certain distance refers to the distance between human body and automobile on the pre- driving trace of automobile, and a certain distance is fixed
Justice is as follows: first according to human body image spaces in video, determining the angle α of the human body deviation pre- driving trace of automobile；Then it ties
The angle is closed, according to 1-3 times of width of the distance between human body and automobile d and automobile itself, is set as k, if dsin α≤K/2,
Then judge that human body is located on the pre- driving trace of automobile；The distance between the human body and automobile are included in a certain distance.
Preferably, sometime segment limit is 1s.
It has the beneficial effect that:
1. the time of electromagnet energizing magnetic is extremely short, buffer gear tells at once, and reaction speed is exceedingly fast；
2. there is certain stroke between electromagnet and permanent magnet, it can be slow for a long time by the impact force between pedestrian and automobile
Punching, largely reduces impact force；
3. can effectively avoid automobile concussion and rolling of the wind pressure to buffer gear in such a way that buffer gear is closed in magnet absorption
It is dynamic；
4. identifying pedestrian in real time using human bioequivalence end, start buffer gear when hitting pedestrian in time, energy effective protection pedestrian is special
It Shi Yongyu not automatic driving technical field.
Detailed description of the invention
Fig. 1 is the front bumper outside plate overall system architecture schematic diagram of the mitigation traffic accident based on human bioequivalence；
Fig. 2 is front bumper outside plate partial enlargement structural representation；
Fig. 3 is human bioequivalence end partial enlargement structural representation；
Fig. 4 is that human bioequivalence end recognizes permanent magnet and the mutually exclusive structural schematic diagram of electromagnet after human body；
Fig. 5 is the distance between human body and automobile Computing Principle schematic diagram；
Fig. 6 is the schematic illustration for judging human body and whether being located on the pre- driving trace of automobile.
In figure: 1. human bioequivalence ends, 2. front bumper outside plates, 3. buffer gears, 31. electromagnet, 32. permanent magnets, 33.
Buffer body, 311. electronic switch a, 312. power supplys, 21. front bumper outside plates outsides, 22. gaps.
Specific embodiment
Embodiment 1
As shown in Figs 1-4, the front bumper outside plate system of the mitigation traffic accident based on human bioequivalence, including human bioequivalence end,
Front bumper outside plate and buffer gear, human bioequivalence end are Computer Vision Recognition end or infrared induction sensor, and human body is known
Whether there Duan not be pedestrian in a certain range in front in real-time detection vehicle traveling process, buffer gear is located at front bumper outside plate
It is interior, including electromagnet, permanent magnet and buffer body, permanent magnet and buffer body be fixed together, electromagnet is fixed on preceding insurance
On the inside of thick stick outside plate, the switch of electromagnet is electronic switch a, and the control signal of the control section connection of the electronic switch is that human body is known
Do not hold, the electronic switch by control sections in series between the circuit that power supply and electromagnet are constituted, usually, permanent magnet and electricity
Magnet attracts each other, and buffer body is located in front bumper outside plate；After human bioequivalence end recognizes human body, identification signal is fed back
Electron switch a, electronic switch a connection, so that electromagnet generates magnetism, mutually exclusive with permanent magnet, buffer body is pushed out
To outside front bumper outside plate, when automobile impacting human body, buffer body contacts human body at once, by between electromagnet and permanent magnet
Repulsive force and buffer body itself play impact buffer function.
Usually, on the outside of buffer body on the outside of front bumper outside plate in the same plane；When human bioequivalence end recognizes human body
Afterwards, buffer body is interspersed with from the gap on the outside of front bumper outside plate.
The power supply of electromagnet is vehicle power supply, and permanent magnet is ndfeb magnet.Ndfeb magnet, compared to ferrite magnetic
Iron, alnico, SmCo magnetic property greatly surmounted other several magnet, ndfeb magnet can adsorb weight itself
640 times of weight can guarantee that bumper closes.
It further include an electronic switch b, the control signal of the control section connection of the electronic switch is speed, when speed is big
When a certain speed, which is connected, which is constituted by control sections in series in vehicle power supply and electromagnet
Circuit between.
When speed is greater than 10km/h, electronic switch b is connected.
The System Utilization Procedure is as follows: a. Computer Vision Recognition end simultaneously identifies view according to the video of shooting, extract real-time
Human body head in frequency；B. due to human body head, shared pixel ratio size and its distance calculation vision are known in video image
Do not hold distance at inverse correlation, therefore, can pixel ratio size according to shared by it determine the distance between itself and automobile；C. work as people
The distance between body and automobile it is a certain apart from it is interior when, by identification signal by acoustooptic prompt driver, take it and keep away
Allow measure, while identification signal fed back into electronic switch a, electronic switch a is connected so that electromagnet generate it is magnetic, and it is permanent
Magnet is mutually exclusive, and bumper closes dynamics reduction；D. when unidentified arrive in human body certain time period, identification signal disappears,
Electronic switch a is closed, and permanent magnet and electromagnet attract each other, and bumper closes.
A certain distance range is 1-10m, and the distance and speed inverse correlation.According to correlative study, when speed 10km/h, thrust into
Meeting slight wound, when distance range is 1m, the human bioequivalence reaction time for leaving Computer Vision Recognition end for is 0.36s；Speed
When 100km/h, the death rate of thrusting into is high, when distance range is 10m, leaves the human bioequivalence reaction at Computer Vision Recognition end for
Time is similarly 0.36s.It is humanoid due to only needing to identify, recognition of face is not needed, which is enough.
As shown in figure 5, set the distance between human body and automobile as d, then d=180s/ (r β π), at this point, computer vision is known
Duan not be mounted on immediately ahead of automobile, the distance between human body and Computer Vision Recognition end be between human body and automobile away from
From wherein r is human body head diameter shared pixel ratio size in video image, is calculated by computer, computer view
Feel that identification end visual angle is β, is Computer Vision Recognition end preset parameter, human body head diameter s, human body head size difference is not
It greatly, is a constant.The image of Computer Vision Recognition end shooting is using Computer Vision Recognition end as the fan-shaped region in the center of circle, then
Have, r=s/ (π β d/180) is obtained, d=180s/ (r β π).The rule being not much different using human body head size is set to often
Amount carries out positioning and distance exam, simple and effective.
As shown in fig. 6, a certain distance refers to the distance between human body and automobile on the pre- driving trace of automobile, a certain distance
It is defined as follows: first according to human body image spaces in video, determining that human body deviates the angle α of the pre- driving trace of automobile；Then
It is set as k according to 1-3 times of width of the distance between human body and automobile d and automobile itself in conjunction with the angle, if dsin α≤k/
2, then judge that human body is located on the pre- driving trace of automobile；The distance between the human body and automobile are included in a certain distance.In order to mention
K can also be expanded to 1-3 times of the width of automobile itself by high safety factor.The definition of a certain distance can improve human body and vapour
Vehicle hits a possibility that prediction, prevents other the case where can not hitting from causing the frequent movement of electro-magnet switch, protects equipment.
Sometime segment limit is 1s.If automobile collision moment human bioequivalence blackout, bumper are closed immediately, are led
Cause can not play impact buffer function, this period is in order to avoid bumper closes in advance.From bumper to insurance
The distance of thick stick is up to 1m or so, and by taking the slight wound speed 10km/h that thrustes into as an example, the delay time for leaving electromagnet at this time is
0.36s, speed is faster, and the delay time is shorter, is enough because time period range is 1s.Meanwhile electromagnet itself generates
Magnetic and demagnetization response time is extremely short, can be neglected.
Claims (10)
1. the front bumper outside plate system of the mitigation traffic accident based on human bioequivalence, it is characterized in that including human bioequivalence end, preceding
Bumper outside plate and buffer gear, human bioequivalence end are Computer Vision Recognition end or infrared induction sensor, human bioequivalence
Whether there is pedestrian in a certain range in front in the real-time detection vehicle traveling process of end, buffer gear is located in front bumper outside plate,
Including electromagnet, permanent magnet and buffer body, permanent magnet and buffer body are fixed together, and electromagnet is fixed on outside front bumper
On the inside of plate, the switch of electromagnet is electronic switch a, and the control signal of the control section connection of the electronic switch is human bioequivalence
End, the electronic switch by control sections in series between the circuit that power supply and electromagnet are constituted, usually, permanent magnet and electromagnetism
Iron attracts each other, and buffer body is located in front bumper outside plate；After human bioequivalence end recognizes human body, identification signal is fed back to
Electronic switch a, electronic switch a are connected, so that electromagnet generates magnetism, mutually exclusive with permanent magnet, buffer body is pushed out to
Outside front bumper outside plate, when automobile impacting human body, buffer body contacts human body at once, by the row between electromagnet and permanent magnet
Repulsion and buffer body itself play impact buffer function.
2. the front bumper outside plate system of the mitigation traffic accident according to claim 1 based on human bioequivalence, feature
For usually, on the outside of buffer body and front bumper outside plate outside is in the same plane；After human bioequivalence end recognizes human body, buffering
Body is interspersed with from the gap on the outside of front bumper outside plate.
3. the front bumper outside plate system of the mitigation traffic accident according to claim 1 based on human bioequivalence, feature
Power supply for electromagnet is vehicle power supply, and permanent magnet is ndfeb magnet.
4. the front bumper outside plate system of the mitigation traffic accident according to claim 1 based on human bioequivalence, feature
To further include an electronic switch b, the control signal of the control section connection of the electronic switch is speed, when speed is greater than a certain
When speed, which is connected, the electronic switch by control sections in series in the circuit that vehicle power supply and electromagnet are constituted
Between.
5. the front bumper outside plate system of the mitigation traffic accident according to claim 4 based on human bioequivalence, feature
For when speed is greater than 10km/h, electronic switch b is connected.
6. the front bumper outside plate system of the mitigation traffic accident according to claim 1 based on human bioequivalence, feature
As follows for the System Utilization Procedure: a. Computer Vision Recognition end simultaneously identifies in video according to the video of shooting, extract real-time
Human body head；B. due to human body head in video image shared pixel ratio size and its distance calculation visual identity end
Distance is at inverse correlation, therefore, can pixel ratio size according to shared by it determine the distance between itself and automobile；C. when human body and vapour
The distance between vehicle it is a certain apart from it is interior when, by identification signal by acoustooptic prompt driver, so that it is taken measures to keep clear,
Identification signal is fed back into electronic switch a simultaneously, electronic switch a is connected, so that electromagnet generates magnetism, it is mutual with permanent magnet
Repel, bumper closes dynamics reduction；D. when unidentified arrive in human body certain time period, identification signal disappears, electronic switch a
It closes, permanent magnet and electromagnet attract each other, and bumper closes.
7. the front bumper outside plate system of the mitigation traffic accident according to claim 6 based on human bioequivalence, feature
It is 1-10m for a certain distance range, and the distance and speed inverse correlation.
8. the front bumper outside plate system of the mitigation traffic accident according to claim 6 based on human bioequivalence, feature
To set the distance between human body and automobile as d, then d=180s/ (r β π), at this point, Computer Vision Recognition end is being mounted on automobile just
Front, the distance between human body and Computer Vision Recognition end are the distance between human body and automobile, and wherein r is human body head
Diameter shared pixel ratio size in video image, is calculated by computer, and Computer Vision Recognition end visual angle is β, is
Computer Vision Recognition end preset parameter, human body head diameter s, human body head size are not much different, and are a constant.
9. the front bumper outside plate system of the mitigation traffic accident according to claim 8 based on human bioequivalence, feature
Refer to the distance between human body and automobile on the pre- driving trace of automobile for a certain distance, a certain distance definition is as follows: root first
According to human body image spaces in video, determine that human body deviates the angle α of the pre- driving trace of automobile；Then in conjunction with the angle, according to
1-3 times of width of the distance between human body and automobile d and automobile itself, is set as k, if dsin α≤K/2, judges human body position
In on the pre- driving trace of automobile；The distance between the human body and automobile are included in a certain distance.
10. the front bumper outside plate system of the mitigation traffic accident according to claim 6 based on human bioequivalence, feature
It is 1s for sometime segment limit.
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| CN201910845617.6A CN110395214A (en) | 2019-09-09 | 2019-09-09 | The front bumper outside plate system and method for mitigation traffic accident based on human bioequivalence |
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| CN201910845617.6A CN110395214A (en) | 2019-09-09 | 2019-09-09 | The front bumper outside plate system and method for mitigation traffic accident based on human bioequivalence |
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Citations (5)
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| CN106004775A (en) * | 2016-06-22 | 2016-10-12 | 浙江吉利控股集团有限公司 | Self-adaption front bumper system used for vehicle and control method |
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| CN211280939U (en) * | 2019-09-09 | 2020-08-18 | 湖南科技大学 | Front bumper outer plate system for reducing traffic accidents based on human body recognition |
-
2019
- 2019-09-09 CN CN201910845617.6A patent/CN110395214A/en active Pending
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|---|---|---|---|---|
| JPH06229759A (en) * | 1993-02-01 | 1994-08-19 | Fujitsu Ten Ltd | System for estimating distance and speed of preceding vehicle using image |
| CN104085366A (en) * | 2014-06-26 | 2014-10-08 | 华侨大学 | Automobile crash self-adaptation multi-level buffering energy-absorbing device and control method thereof |
| CN106004775A (en) * | 2016-06-22 | 2016-10-12 | 浙江吉利控股集团有限公司 | Self-adaption front bumper system used for vehicle and control method |
| CN109017774A (en) * | 2018-07-03 | 2018-12-18 | 奇瑞汽车股份有限公司 | Vehicle intelligent collision method and device, computer readable storage medium |
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