CN105946755B - A kind of buffering automobile collision energy-absorbing safeguard and its control method - Google Patents
A kind of buffering automobile collision energy-absorbing safeguard and its control method Download PDFInfo
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- CN105946755B CN105946755B CN201610397364.7A CN201610397364A CN105946755B CN 105946755 B CN105946755 B CN 105946755B CN 201610397364 A CN201610397364 A CN 201610397364A CN 105946755 B CN105946755 B CN 105946755B
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- air bag
- air
- bumper
- peace
- pressure
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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
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R19/20—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact containing mainly gas or liquid, e.g. inflatable
- B60R19/205—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact containing mainly gas or liquid, e.g. inflatable inflatable in the direction of an obstacle upon impending impact, e.g. using air bags
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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
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
-
- 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
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0134—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to imminent contact with an obstacle, e.g. using radar systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Air Bags (AREA)
Abstract
The invention belongs to a kind of buffering automobile collision energy-absorbing safeguard and its control method of buffering automobile collision energy-absorbing technical field, described device includes testing agency, executing agency, hydraulic damper, several air bags, turbo charging installation, high pressure tank, low pressure gasholder and electronic control unit；Method of the present invention by adding in air bag between bumper and vehicle frame, the energy of collision can be changed into when automobile collides the energy of compressed gas, and air is discharged into air bag, crusherbull zone is achieved the purpose that with this, mitigates the injury that car crass is brought.Whether the present invention calculates judge automobile in safe distance in real time according to distance between the speed of automobile and automobile and barrier.Meanwhile whether Distance Judgment air bag of the electronic control unit according to residing for automobile is inflated bumper is made to protract, and effectively improves Crash Safety Design of Vehicles energy.Energy consumption can be saved under to a certain degree by recycling with cycling and reutilization by charging and discharging gas.
Description
Technical field
The invention belongs to buffering automobile collision energy-absorbing technical fields, and in particular to a kind of buffering automobile collision energy-absorbing safe dress
It puts and its control method.
Background technology
Automobile quantity increases year by year, collision is made to knock into the back, traffic accidents is waited to occur again and again, automotive safety has become industry
The major issue of interior concern.In order to ensure the safety of automobile and people, many safe practices are come into being, buffering automobile collision skill
Art is also therefore gradually ripe and is applied.The sixties in last century, Benz Co. take the lead in proposing the concept of " buffering energy-absorbing ",
" buffering energy-absorbing " is then developed by Honda Motor factory, they adjust vehicle body varying strength by optimizing the structure of vehicle body
The ratio of steel achievees the effect that buffering energy-absorbing.As safe practice is constantly progressive, also occur various crash protections on automobile
Device, such as bumper, air bag, collision energy absorbing box, collision bumper etc..However, existing crusherbull zone technology is most
Buffering energy-absorbing is carried out by the way of spring triggering or fluid triggering, although buffering effect is improved, there are still this
Some problems.Spring triggering has from shake phenomenon, easily transfers low-frequency vibration, and weight is big；And then there is response and delay in fluid triggering
The problem of slow.
The content of the invention
The purpose of the present invention is providing a kind of buffering automobile collision energy absorption device and its control method regarding to the issue above, lead to
The method for cross air bag inflation, compressing and discharging, changes into the energy of collision the energy of compressed gas, then air is discharged
The mode of air bag achievees the purpose that crusherbull zone, solves the drawbacks of spring, fluid triggering mode, improves buffering effect.
The technical scheme is that：A kind of buffering automobile collision energy-absorbing safeguard including testing agency, performs machine
Structure, hydraulic damper, several air bags, high pressure tank and electronic control unit；
The testing agency includes velocity sensor, range sensor a, range sensor b and air pressure probe；Institute
Velocity sensor is stated mounted on car body front end；The range sensor a is mounted on car body front end；The range sensor b installations
In bumper back edge；The air pressure probe is located in air bag；
The executing agency includes air inlet electromagnetic valve, outlet solenoid valve and high-pressure inflating pump；
There are two the quantity of the hydraulic damper, is separately mounted to the both sides of vehicle frame, one end of the hydraulic damper
It is connected with bumper, the other end is connected with vehicle frame；
One end of the air bag is connected with bumper, and the other end is connected with vehicle frame；One end of the high pressure tank
It is connected by one end of air inlet pipe and air bag, the other end of the air bag and one end of air outlet pipe connect, high pressure storage
The other end of gas tank is connected by pipeline with high-pressure inflating pump；The air inlet electromagnetic valve is mounted on admission line, the outlet
Solenoid valve is mounted in air outlet pipe；
The electronic control unit includes input module, output module and computing module；The input module and detection machine
Structure is electrically connected, for receiving the speed signal of velocity sensor detection, the barrier of range sensor a detections and the reality of garage
When distance signal, range sensor b detection bumper outreach signal, air pressure probe detection pressure signal,
And the signal received is transmitted to computing module；The computing module carries out the comprehensive descision of safe condition, and generates air
Airbag aeration or instruction of deflating, and output module is transferred the instructions to, the output module is electrically connected with executing agency, is used for
By the signal output of computing module to executing agency, the high-pressure inflating pump is for being inflated high pressure tank, into pneumoelectric
Magnet valve is used to inflate air bag according to inflation instruction, and the outlet solenoid valve is used to put air bag according to instruction of deflating
Gas.
In said program, the air bag is air-spring bellows.
In said program, the quantity of the air bag is four, is respectively air bag a, air bag b, air gas
Capsule c, air bag d；
The air bag a is connected with air bag d with tracheae；The air bag b and air bag c tracheae phases
Connection.
In said program, low pressure gasholder, turbo charging installation and check valve are further included；
The low pressure gasholder is mounted on vehicle frame, and one end of the low pressure gasholder and the other end of air outlet pipe connect,
One end of the turbo charging installation is connected by pipeline with the other end of the low pressure gasholder, the turbo charging installation
The other end is connected by pipeline with high pressure tank；The check valve is mounted on turbo charging installation and high-pressure gas are tank connected
On pipeline.
In said program, two groups of damper protective devices are further included, the damper protective device is sleeve-shaped, right respectively
On the both sides for being nested in bumper answered and the both sides of vehicle frame.
A kind of control method according to the buffering automobile collision energy-absorbing safeguard comprises the following steps：
Speed signal, range sensor a detection barriers and vapour are detected by velocity sensor in S1, vehicle traveling process
The real-time range signal in workshop, range sensor b detection bumper outreach signals, air pressure probe detection pressure letter
Number, and the input module of electronic control unit is passed the signal to, input module passes the signal to computing module；
A minimum safe distance standard S is preset in S2, the computing modulePeace, computing module is according to the vehicle of detection
The real-time range signal of fast signal and barrier and garage calculates automobile minimum safe distance SPeace, according to the real-time range of detection
S and minimum safe distance SPeaceMagnitude relationship, carry out the comprehensive descision of safe condition, and generate air bag inflation or deflate
Instruction：Judge whether air inlet electromagnetic valve is opened to be inflated to air bag, bumper is made to protract, meanwhile, computing module is being pressed
According to the size of the range sensor b bumper extension distances measured in compression process, judging whether pneumoelectric magnet valve is opened makes sky
Gas air bag is deflated；Air bag is inflated or deflated to instruct by computing module is sent to executing agency by output module；
S3, the executing agency, which inflate or deflate according to air bag, instructs control air inlet electromagnetic valve or outlet solenoid valve
Unlatching.
In said program, the step S3 is specially：
If vehicle velocity V is less than 30km/h, bumper does not stretch out, and crusherbull zone is carried out with original gas in air bag；
If vehicle velocity V is more than 30km/h, continuous three groups of real time data S are measured by velocity sensor and range sensor a1、V1；
S2、V2；S3、V3, and electronic control unit is passed to, minimum safe distance under each time is counted respectively by electronic control unit
It calculates, is denoted as SPeace 1、SPeace 2、SPeace 3, and by S1、S2、S3Respectively with SPeace 1、SPeace 2、SPeace 3It is compared：
The first situation, i.e., as each moment minimum safe distance SPeaceBoth it is more than wherein SxValue, again smaller than wherein SyValue, wherein
Sx、SyFor S1、S2、S3Among value, belong to temporary precarious position at this time, air bag is not stretched out without inflation, bumper；
The second situation, i.e., as each moment minimum safe distance SPeace 1、SPeace 2、SPeace 3Less than corresponding moment S1、S2、S3, belong at this time
In safe condition, air bag is not stretched out without inflation, bumper, and testing agency continues gathered data and carries out next round
Compare, next round result then continues to be judged according to three kinds of situations of appearance；
The third situation, i.e., as each moment minimum safe distance SPeace 1、SPeace 2、SPeace 3More than the distance S at corresponding moment1、S2、S3,
Belong to precarious position at this time, the air inlet electromagnetic valve of electronic control unit control at this time is opened, and high-pressure inflating pump starts to air bag
It is inflated, makes air bag expansion extension, so as to which bumper be driven to protract, surveyed by the air pressure probe in air bag
During fixed final air bag cavity pressure P1, stop inflation, close air inlet electromagnetic valve；Meanwhile it is measured by range sensor b and insured at this time
Thick stick extension distance, is denoted as SIt stretches；
It after bumper stretches out, then carries out a real-time data acquisition and compares, carry out final result confirmation：When result occurs
During the first situation, bumper extension state is kept, and continues gathered data and is compared；When there is the second situation, by
Electronic control unit controls the outlet solenoid valve of air bag a, air bag b, air bag c and air bag d to open, and carries out
Gas is discharged, until bumper recovers to original position, it is P0 to ensure the pressure in air bag；When finally there is the third situation
When, that is, represent collision, bumper starts to bounce back.
In said program, the first described situation is specifically divided into：
If a) minimum safe distance SPeaceMinimum value be not present in S3、V3In one group, belong to temporary precarious position, air gas
Capsule is not stretched out without inflation, bumper, is continued gathered data and is carried out next round comparison, is judged according to result；
If b) minimum safe distance SPeaceMinimum value appear in S3、V3One group, belong to temporary precarious position, air bag is not
It is inflated, bumper does not stretch out, and is needed at this time with S3Initial data of the group numerical value as next data, then proceedes to acquisition number
According to next round comparison is carried out, next round result then continues to be judged according to three kinds of situations of appearance.
In said program, the bumper retraction process is specially：Collision impact makes bumper start to bounce back, so as to press
Contracting air bag makes pressure rise in air bag, becomes when range sensor b measures bumper elongated distanceWhen, it is empty
Air pressure force snesor records the air pressure P2 in air bag at this time and passes to electronic control unit, electronic control unit control
System opens the outlet solenoid valve of inside air air bag b and air bag c, gas release is carried out, when air pressure probe measures
Air bag b and air bag c cavity pressures becomeWhen, pneumoelectric magnet valve is used by electronic control unit effect and is closed；
Become when range sensor b measures bumper elongated distanceWhen, it is empty to be controlled by an electronic control unit opening outside
The outlet solenoid valve of gas air bag a and air bag d, carries out release gas, until SIt stretchesFor 0.
In said program, gases at high pressure recycling step is further included, the gases at high pressure recycling step is specially：Gas is from institute
It states after air bag is discharged by outlet solenoid valve into low pressure gasholder, gases at high pressure is generated by turbo charging installation, and are passed through
Check valve is crossed to store into high pressure tank.
The beneficial effects of the invention are as follows：Compared with prior art, the present invention is inflated by air bag, compressed and discharged
Method changes into the energy of collision the energy of compressed gas, then the mode of air discharge air bag is reached to the mesh of crusherbull zone
, it solves the drawbacks of spring, fluid triggering mode, improves buffering effect；Due to using electronic control unit, electromagnetism is controlled
The switch of valve, corresponding speed is fast, makes the time needed for the unlatching of air bag inflation/deflation very short, ensure that control accuracy；Due to passing
Sensor can gather speed and distance signal in real time, and computing module can carry out real-time operation according to range formula, accomplish dynamic in real time
State is adjusted, and is conducive to improve the reliability and stability of crusherbull zone；Since by the use of gas as buffer medium, light weight uses
The energy of collision is changed into the energy of compressed gas and air is discharged to the mode of air bag, good buffer effect；Charging and discharging gas can
Can energy consumption be saved with cycling and reutilization under to a certain degree by recycling.
Description of the drawings
Fig. 1 is the structure diagram of an embodiment of the present invention；
Fig. 2 is an embodiment of the present invention electronic control unit connection diagram.
In figure：1st, range sensor a；2nd, range sensor b；3rd, hydraulic damper；4th, air bag；5th, air pressure passes
Sensor；6th, vehicle frame；7th, outlet solenoid valve；8th, air inlet electromagnetic valve；9th, turbo charging installation；10th, high-pressure inflating pump；11st, check valve；
12nd, high pressure tank；13rd, air inlet pipe；14th, low pressure gasholder；15th, air outlet pipe；16th, damper protective device；17th, bumper；
18th, velocity sensor.
Specific embodiment
In order to which the technical features, objects and effects to invention are more clearly understood, now control description of the drawings is of the invention
Specific embodiment, in the various figures identical label represent the same or similar part.Attached drawing is merely to illustrate the present invention, no
Represent the practical structures and actual proportions of the present invention.
Fig. 1 show a kind of embodiment of buffering automobile collision energy-absorbing safeguard of the present invention, and the automobile touches
Buffering energy-absorbing safety device is hit, including testing agency, executing agency, hydraulic damper 3, several air bags 4, turbocharging dress
Put 9 high pressure tanks 12, low pressure gasholder 14 and electronic control unit ECU.
The testing agency includes velocity sensor 18, range sensor a1, range sensor b2 and air pressure sensing
Device 5；The velocity sensor 18 is mounted on car body front end, for measuring real-time speed；The range sensor a1 is mounted on vehicle
Body front end, for measuring the real-time range of barrier and garage；The range sensor b2 is mounted on 17 back edge of bumper,
For detecting bumper outreach；The air pressure probe 5 is located in air bag, for detecting in air bag 4
Pressure.
The executing agency includes outlet solenoid valve 7, air inlet electromagnetic valve 8 and high-pressure inflating pump 10；The outlet solenoid valve 7
For 2/2-way formula solenoid valve, the quantity of the outlet solenoid valve 7 is four, is denoted as outlet electromagnetism in Fig. 1 successively from left to right
Valve a, outlet solenoid valve b, outlet solenoid valve c and outlet solenoid valve d, are separately mounted in air outlet pipe 15, for gas to be controlled to arrange
Go out air bag 4.The air inlet electromagnetic valve 8 is 2/2-way formula solenoid valve, and the quantity that air inlet electromagnetic valve 8 is is four, in Fig. 1
Air inlet electromagnetic valve a, air inlet electromagnetic valve b, air inlet electromagnetic valve c and air inlet electromagnetic valve d are followed successively by from left to right, are separately mounted to air inlet
On pipe 13, for gas to be controlled to enter air bag 4, outlet solenoid valve 7 and air inlet electromagnetic valve 8 are in when being not powered on disconnects shape
State.The high-pressure inflating pump 10 is fixed on vehicle frame, connects high pressure tank 12, and gases at high pressure are pressed by high-pressure inflating pump 10
In high pressure tank 12, in order to which each air bag 4 is inflated.
The air bag 4 is air-spring bellows, and air bag can extend contraction, for carrying out crusherbull zone, the sky
Gas air bag 4 is located at behind bumper 17.One end of the air bag 4 is connected with bumper 17, and the other end is connected with vehicle frame 6,
Initially ensure that there is the gas of certain pressure P0 in air bag 4.The quantity of the air bag 4 is four, is respectively sky
Gas air bag a, air bag b, air bag c, air bag d；For ensure gas air bag a with air bag d air pressures identical, air
Air bag b is identical with air bag c air pressures, and the air bag a is connected with air bag d with tracheae, the air bag b and
Air bag c is connected with tracheae.It is inflated when needing elongation, when compression deflates, and drives bumper 17 with this
Extension and contraction, for carrying out crusherbull zone.The corresponding air pressure probe 5 altogether there are four, from Fig. 1 left-to-right according to
Secondary is air pressure probe a, air pressure probe b, air pressure probe c and air pressure probe d, is respectively used to
Detect the pressure in air bag a, air bag b, air bag c and air bag d.
There are two the quantity of the hydraulic damper 3, is separately mounted to the both sides of vehicle frame 6, for connect bumper 17 with
Vehicle frame 6, one end of the hydraulic damper 3 are connected with bumper 17, and the other end is connected with vehicle frame 6.The hydraulic damper 3
Main function is play the guiding role when bumper 17 moves, and has certain buffering effect.In addition 3 both ends of fixed hydraulic damper
Periphery damper protective device 16 is installed, hydraulic damper 3 is made to be initially in elongation state, and allows hydraulic damper
3 can not be fully retracted to bottom, it is therefore an objective to prevent that damper is made to collapse when shrinking when impact force is excessive.
The damper protective device 16 has two groups, and the damper protective device 16 is sleeve-shaped, respectively positioned at hydraulic pressure
The junction of damper 3 and bumper 17 and hydraulic damper 3 and vehicle frame 6, it is corresponding to be nested in the two of bumper 17
On side and the both sides of vehicle frame 6, when bumper 17 does not stretch out, the half of 3 length of hydraulic damper is exactly damper protective device
16 length, effect is that hydraulic damper 3 is made to be initially in elongation state, and hydraulic damper 3 can not be shunk completely
On earth, it is therefore an objective to prevent that hydraulic damper 3 is made to collapse when shrinking when impact force is excessive.
The high pressure tank 12 is fixed on vehicle frame, the one of the high pressure tank 12 for storing gases at high pressure
End is connected respectively by air inlet pipe 13 with one end of air bag a, air bag b, air bag c, air bag d, the sky
The one end of gas air bag a, air bag b, air bag c, the other end of air bag d respectively with air outlet pipe 15 is connected, high pressure storage
The other end of gas tank 12 is connected by pipeline with high-pressure inflating pump 10, is facilitated each airbag aeration, is not interfere with each other.
The low pressure gasholder 14 is mounted on vehicle frame 6, for storing the gas of the discharge of air outlet pipe 15；The low pressure gas storage
One end of tank 14 is connected with the other end of air outlet pipe 15, and one end of the turbo charging installation 9 is stored up by pipeline and the low pressure
The other end connection of gas tank 14, the other end of the turbo charging installation 9 are connected by pipeline with high pressure tank 12, for returning
The gas that air bag 4 is discharged is received, high pressure gas storage is regenerated and is stored in high pressure tank 12；Turbo charging installation 9 and height
Check valve 11 is installed on the pipeline that pressure air accumulator 12 connects, for controlling gas by turbo charging installation 9 to high pressure tank
12 one-way flow prevents the gas overflowing of high pressure tank 12.
As shown in Fig. 2, the electronic control unit includes input module, output module and computing module；The input mould
Block is electrically connected with testing agency, for receiving the speed signal of the detection of velocity sensor 18, the obstacle of range sensor a1 detections
The real-time range signal of object and garage, the 17 outreach signal of bumper of range sensor b2 detections, air pressure sensing
The pressure signal that device 5 detects, and the signal received is transmitted to computing module；The computing module carries out the comprehensive of safe condition
Close and judge, and generate air bag 4 and inflate or deflates instruction, and transfer the instructions to output module, the output module and
Executing agency is electrically connected, for by the signal output of computing module to executing agency, the high-pressure inflating pump 10 to be used for high pressure
Air accumulator 12 is inflated, and the air inlet electromagnetic valve 8 is used to inflate air bag 4 according to inflation instruction, the outlet electromagnetism
Valve 7 is used to deflate to air bag 4 according to instruction of deflating.
A kind of control method according to the buffering automobile collision energy-absorbing safeguard comprises the following steps：
Speed signal, range sensor a1 detection barriers are detected by velocity sensor 18 in S1, vehicle traveling process
With the real-time range signal of garage, range sensor b2 detection 17 outreach signals of bumper, air pressure probe 5 is examined
Pressure measurement force signal, and the input module of electronic control unit is passed the signal to, input module passes the signal to computing module.
A minimum safe distance standard S is preset in S2, the computing modulePeace, computing module is according to the vehicle of detection
The real-time range signal of fast signal and barrier and garage calculates automobile minimum safe distance SPeace, according to the real-time range of detection
S and minimum safe distance SPeaceMagnitude relationship, carry out the comprehensive descision of safe condition, and generate air bag 4 and inflate or put
Gas instructs：Judge whether air inlet electromagnetic valve 8 is opened to be inflated to air bag 4, bumper 17 is made to protract；Meanwhile computing mould
Block, according to the size of the range sensor b2 extension distances of bumper 17 measured, judges that pneumoelectric magnet valve 7 is in compression process
No unlatching makes air bag 4 deflate, in addition, outlet solenoid valve 7 is not turned in intake process；The computing module will be by sky
Gas air bag 4 is inflated or deflate to instruct is sent to executing agency by output module.
Minimum safe distance standard SPeaceValue Main Basiss automobile braking when braking distance.In the automobile brake stage
It is divided into four-stage：1) the operator brake stage of reaction；2) the brake stage of reaction；3) braking deceleration build phase；4)
The brake stabilization stage.In the operator brake stage of reaction, if time of driver's reaction is ta, speed va, during which travel
Distance is sa, it is known that taAbout 0.3~1.0s takes its maximum, i.e. ta=1.0s；In the brake stage of reaction, if brake
Reaction time is tb, operating range sb, t is made through consulting reference materialsb=0.16s；In braking deceleration build phase, if the time is tc,
Operating range is sc, make tc=0.2s；It is smaller on speed influence since braking time is shorter in the brake stabilization stage,
Speed v can be setd=va, through consult reference materials maximum braking deceleration a is about 5m/s2, braking distance sd。
SoWherein vaIt can be measured by velocity sensor 18.
S3, the executing agency, which inflate or deflate according to air bag 4, instructs control air inlet electromagnetic valve 8 or outlet electromagnetism
The unlatching of valve 7, concretely comprises the following steps：
If vehicle velocity V is less than 30km/h, bumper 17 does not stretch out, and crusherbull zone is carried out with original gas in air bag 4；
If vehicle velocity V is more than 30km/h, continuous three groups of real time datas are measured by velocity sensor 18 and range sensor a1, i.e.,
Distance S under synchronization txWith speed Vx：S1、V1；S2、V2；S3、V3, and electronic control unit is passed to, pass through electronic control
Unit calculates minimum safe distance under each time respectively, is denoted as SPeace 1、SPeace 2、SPeace 3, and by S1、S2、S3Respectively with SPeace 1、
SPeace 2、SPeace 3It is compared, comparative result can be divided into three kinds of situations：
The first situation, i.e., as each moment minimum safe distance SPeaceBoth it is more than wherein SxValue, again smaller than wherein SyValue, wherein
SxAnd SyFor S1、S2、S3Among value, belong to temporary precarious position at this time, air bag 4 is not stretched without inflation, bumper 17
Go out；
The first situation is specifically divided into a) and b) two situations again：
If a) minimum safe distance SPeaceMinimum value be not present in S3、V3In one group, belong to temporary precarious position, air gas
Capsule 4 is not stretched out without inflation, bumper 17, is continued gathered data and is carried out next round comparison, is judged according to result；
If b) minimum safe distance SPeaceMinimum value appear in S3、V3One group, belong to temporary precarious position, air bag 4 is not
It is inflated, bumper 17 does not stretch out, and is needed at this time with S3Initial data of the group numerical value as next data, then proceedes to gather
Data carry out next round comparison, and next round result then continues to be judged according to three kinds of situations of appearance.
The second situation, i.e., as each moment minimum safe distance SPeace 1、SPeace 2、SPeace 3Less than corresponding moment S1、S2、S3, belong at this time
In safe condition, air bag 4 is not stretched out without inflation, bumper 17, and testing agency continues gathered data and carries out down
One wheel compares, and next round result then continues to be judged according to three kinds of situations of appearance；
The third situation, i.e., as each moment minimum safe distance SPeace 1、SPeace 2、SPeace 3More than the distance S at corresponding moment1、S2、S3,
Belong to precarious position at this time, the air inlet electromagnetic valve 8 of electronic control unit control at this time is opened, and high-pressure inflating pump 10 starts to air gas
Capsule 4 is inflated, and makes the expansion extension of air bag 4, so as to which bumper 17 be driven to protract, by the air pressure in air bag 4
When sensor 5 measures final air bag cavity pressure P1, stop inflation, close air inlet electromagnetic valve 8；Meanwhile by range sensor b2
The extension of bumper 17 distance at this time is measured, is denoted as SIt stretches；
It after bumper 17 stretches out, then carries out a real-time data acquisition and compares, carry out final result confirmation：When result goes out
During the first existing situation, the extension state of bumper 17 is kept, and continues gathered data and is compared；When there is the second situation
When, the outlet solenoid valve 7 for being controlled by an electronic control unit air bag a, air bag b, air bag c and air bag d is opened
It opens, carries out release gas, until bumper 17 recovers to original position, it is P0 to ensure the pressure in air bag；Occur the when final
During three kinds of situations, that is, represent that collision has occurred and that.
When a collision occurs, collision impact makes bumper 17 start to bounce back, and so as to compressed air air bag 4, makes air gas
Pressure rise in capsule 4 becomes when range sensor b2 measures 17 elongated distance of bumperWhen, air pressure probe 5 is remembered
It records the air pressure P2 in air bag 4 at this time and passes to electronic control unit, it is empty that inside is opened in electronic control unit control
The outlet solenoid valve 7 of gas air bag b and air bag c carries out gas release；When air pressure probe 5 measure air bag b and
Air bag c cavity pressures becomeWhen, pneumoelectric magnet valve 7 is used by electronic control unit effect and is closed；When position Distance-sensing
Device b2 measures 17 elongated distance of bumper and becomesWhen, it is controlled by an electronic control unit and opens outside air air bag a and air gas
The outlet solenoid valve 7 of capsule d, carries out release gas, until displacement SIt stretchesFor 0.
This method further includes gases at high pressure recycling step, and the gases at high pressure recycling step is specially：Gas is from air gas
Capsule 4 enters low pressure gasholder 14 after being discharged by outlet solenoid valve 7, and gases at high pressure are generated by turbo charging installation 9, and by single
It is stored to valve 11 into high pressure tank 12.
Method of the present invention by adding in air bag 4 between bumper 17 and vehicle frame 6, can collide in automobile
When the energy of collision is changed into the energy of compressed gas, and air is discharged into air bag, crusherbull zone is achieved the purpose that with this, is subtracted
The injury that light car crass is brought.The present invention calculates judge in real time according to distance between the speed of automobile and automobile and barrier
Whether automobile is in safe distance.Meanwhile whether Distance Judgment air bag 4 of the electronic control unit according to residing for automobile is inflated
Bumper 17 is made to protract, effectively improves Crash Safety Design of Vehicles energy.
It should be appreciated that although this specification is described according to each embodiment, not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
Bright book is as an entirety, and the technical solutions in each embodiment can also be properly combined, and forming those skilled in the art can be with
The other embodiment of understanding.
Those listed above is a series of to be described in detail illustrating only for possible embodiments of the invention,
They are not to limit the scope of the invention, all equivalent embodiments made without departing from skill spirit of the present invention or change
It should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of buffering automobile collision energy-absorbing safeguard, which is characterized in that including testing agency, executing agency, hydraulic damping
Device (3), several air bags (4), high pressure tank (12) and electronic control unit；
The testing agency includes velocity sensor (18), range sensor a (1), range sensor b (2) and air pressure and passes
Sensor (5)；The velocity sensor (18) is mounted on car body front end；The range sensor a (1) is mounted on car body front end；Institute
Range sensor b (2) is stated mounted on bumper (17) back edge；The air pressure probe (5) is located in air bag；
The executing agency includes air inlet electromagnetic valve (8), outlet solenoid valve (7) and high-pressure inflating pump (10)；
There are two the quantity of the hydraulic damper (3), is separately mounted to the both sides of vehicle frame (6), the hydraulic damper (3)
One end is connected with bumper (17), and the other end is connected with vehicle frame (6)；
One end of the air bag (4) is connected with bumper (17), and the other end is connected with vehicle frame (6)；The high pressure tank
(12) one end is connected by air inlet pipe (13) with one end of air bag (4), the other end and outlet of the air bag (4)
One end connection of (15) is managed, the other end of high pressure tank (12) is connected by pipeline with high-pressure inflating pump (10)；The air inlet
Solenoid valve (8) is mounted on admission line, and the outlet solenoid valve (7) is mounted in air outlet pipe (15)；
The electronic control unit includes input module, output module and computing module；The input module and testing agency's electricity
Connection, for receiving the speed signal of velocity sensor (18) detection, the barrier and garage of range sensor a (1) detections
Real-time range signal, range sensor b (2) detection bumper (17) outreach signal, air pressure probe (5) inspection
The pressure signal of survey, and the signal received is transmitted to computing module；The synthesis that the computing module carries out safe condition is sentenced
It is disconnected, and generate air bag (4) inflation or deflate and instruct, and output module is transferred the instructions to, the output module is with holding
Row mechanism is electrically connected, for by the signal output of computing module to executing agency, the high-pressure inflating pump (10) to be used for high pressure
Air accumulator (12) is inflated, air inlet electromagnetic valve (8) be used for according to inflation instruction to air bag (4) inflate, it is described go out pneumoelectric
Magnet valve (7) is used to deflate to air bag (4) according to instruction of deflating.
2. buffering automobile collision energy-absorbing safeguard according to claim 1, which is characterized in that the air bag (4)
For air-spring bellows.
3. buffering automobile collision energy-absorbing safeguard according to claim 1, which is characterized in that the air bag (4)
Quantity for four, be respectively air bag a, air bag b, air bag c, air bag d；
The air bag a is connected with air bag d with tracheae；The air bag b is connected with air bag c with tracheae
It is logical.
4. buffering automobile collision energy-absorbing safeguard according to claim 1, which is characterized in that further include low pressure gasholder
(14), turbo charging installation (9) and check valve (11)；
The low pressure gasholder (14) is mounted on vehicle frame (6), one end and the air outlet pipe (15) of the low pressure gasholder (14)
The other end connects, and one end of the turbo charging installation (9) is connected by pipeline with the other end of the low pressure gasholder (14),
The other end of the turbo charging installation (9) is connected by pipeline with high pressure tank (12)；The check valve (11) is mounted on
On the pipeline that turbo charging installation (9) is connected with high pressure tank (12).
5. buffering automobile collision energy-absorbing safeguard according to claim 1, which is characterized in that further include two groups of dampers
Protective device (16), the damper protective device (16) be sleeve-shaped, the corresponding both sides for being nested in bumper (17)
On the both sides of vehicle frame (6).
6. a kind of control method of the energy-absorbing safeguard of buffering automobile collision according to claim 1, which is characterized in that including
Following steps：
Speed signal, range sensor a (1) detection barriers are detected by velocity sensor (18) in S1, vehicle traveling process
With the real-time range signal of garage, range sensor b (2) detection bumper (17) outreach signals, air pressure sensing
Device (5) detects pressure signal, and passes the signal to the input module of electronic control unit, and input module passes the signal to fortune
Calculate module；
A minimum safe distance standard S is preset in S2, the computing modulePeace, computing module is according to the speed of detection letter
Number and the real-time range signal of barrier and garage calculate automobile minimum safe distance SPeace, according to the real-time range s of detection with
Minimum safe distance SPeaceMagnitude relationship, carry out the comprehensive descision of safe condition, and generate air bag (4) and inflate or deflate
Instruction：Judge whether air inlet electromagnetic valve (8) is opened to be inflated to air bag (4), bumper (17) is made to protract, meanwhile, fortune
Module is calculated in compression process according to the size of range sensor b (2) bumper (17) the extension distances measured, judges pneumoelectric
Whether magnet valve (7), which is opened, makes air bag (4) deflate；Air bag (4) is inflated or deflated to instruct by computing module to be led to
It crosses output module and is sent to executing agency；
S3, the executing agency, which inflate or deflate according to air bag (4), instructs control air inlet electromagnetic valve (8) or outlet electromagnetism
The unlatching of valve (7).
7. control method according to claim 6, which is characterized in that the step S3 is specially：
If vehicle velocity V is less than 30km/h, bumper (17) does not stretch out, and crusherbull zone is carried out with original gas in air bag (4)；
If vehicle velocity V is more than 30km/h, continuous three groups of real time data S are measured by velocity sensor (18) and range sensor a (1)1、
V1；S2、V2；S3、V3, and electronic control unit is passed to, minimum safe distance under each time is distinguished by electronic control unit
It calculates, is denoted as SPeace 1、SPeace 2、SPeace 3, and by S1、S2、S3Respectively with SPeace 1、SPeace 2、SPeace 3It is compared：
The first situation, i.e., as each moment minimum safe distance SPeaceBoth it is more than wherein SxValue, again smaller than wherein SyValue, wherein Sx、Sy
For S1、S2、S3Among value, belong to temporary precarious position at this time, air bag (4) is not stretched without inflation, bumper (17)
Go out；
The second situation, i.e., as each moment minimum safe distance SPeace 1、SPeace 2、SPeace 3Less than corresponding moment S1、S2、S3, belong to peace at this time
Total state, air bag (4) are not stretched out without inflation, bumper (17), and testing agency continues gathered data and carries out down
One wheel compares, and next round result then continues to be judged according to three kinds of situations of appearance；
The third situation, i.e., as each moment minimum safe distance SPeace 1、SPeace 2、SPeace 3More than the distance S at corresponding moment1、S2、S3, at this time
Belong to precarious position, electronic control unit control air inlet electromagnetic valve (8) is opened at this time, and high-pressure inflating pump (10) starts to air gas
Capsule (4) is inflated, and makes air bag (4) expansion extension, so as to which bumper (17) be driven to protract, by air bag (4)
When air pressure probe (5) measures final air bag cavity pressure P1, stop inflation, close air inlet electromagnetic valve (8)；Meanwhile by
Range sensor b (2) measures bumper (17) extension distance at this time, is denoted as SIt stretches；
It after bumper (17) stretches out, then carries out a real-time data acquisition and compares, carry out final result confirmation：When result occurs
During the first situation, bumper (17) extension state is kept, and continues gathered data and is compared；When there is the second situation
When, it is controlled by an electronic control unit the outlet solenoid valve (7) of air bag a, air bag b, air bag c and air bag d
It opens, carries out release gas, until bumper (17) recovers to original position, it is P0 to ensure the pressure in air bag；Go out when finally
During the third existing situation, that is, represent collision, bumper (17) starts to bounce back.
8. control method according to claim 7, which is characterized in that the first described situation is specifically divided into：
If a) minimum safe distance SPeaceMinimum value be not present in S3、V3In one group, belong to temporary precarious position, air bag (4)
Without inflation, bumper (17) does not stretch out, and continues gathered data and carries out next round comparison, is judged according to result；
If b) minimum safe distance SPeaceMinimum value appear in S3、V3One group, belong to temporary precarious position, air bag (4) not into
Row inflation, bumper (17) are not stretched out, needed at this time with S3Initial data of the group numerical value as next data, then proceedes to gather
Data carry out next round comparison, and next round result then continues to be judged according to three kinds of situations of appearance.
9. control method according to claim 7, which is characterized in that bumper (17) retraction process is specially：
Collision impact makes bumper (17) start to bounce back, and so as to compressed air air bag (4), makes the interior pressure liter of air bag (4)
Height becomes when range sensor b (2) measures bumper (17) elongated distanceWhen, air pressure probe (5) records at this time
Air pressure P2 in air bag (4) simultaneously passes to electronic control unit, and inside air gas is opened in electronic control unit control
The outlet solenoid valve (7) of capsule b and air bag c, carry out gas release, when air pressure probe (5) measure air bag b and
Air bag c cavity pressures becomeWhen, pneumoelectric magnet valve (7) is used by electronic control unit effect and is closed；
Become when range sensor b (2) measures bumper (17) elongated distanceWhen, it is controlled by an electronic control unit opening outside
The outlet solenoid valve (7) of air bag a and air bag d, carries out release gas, until SIt stretchesFor 0.
10. method according to claim 7, which is characterized in that further include gases at high pressure recycling step, the gases at high pressure return
Receiving step is specially：Gas enters low pressure gasholder (14) after being discharged from the air bag (4) by outlet solenoid valve (7),
Gases at high pressure are generated by turbo charging installation (9), and are stored by check valve (11) into high pressure tank (12).
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| CN201610397364.7A CN105946755B (en) | 2016-06-07 | 2016-06-07 | A kind of buffering automobile collision energy-absorbing safeguard and its control method |
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| CN201610397364.7A CN105946755B (en) | 2016-06-07 | 2016-06-07 | A kind of buffering automobile collision energy-absorbing safeguard and its control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239468A (en) * | 2019-06-06 | 2019-09-17 | 南京理工大学 | A kind of adjustable air energy-absorbing bumper of buffer intensity and its energy-absorbing method |
| WO2021159119A1 (en) * | 2020-02-06 | 2021-08-12 | Weeks Bruce V | Impact absorption elements, systems, and methods of use |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106740612A (en) * | 2016-11-10 | 2017-05-31 | 刘红才 | Buffer device for collision |
| CN108482288B (en) * | 2018-03-12 | 2021-04-09 | 新乡职业技术学院 | Safety protection device for automobile passenger |
| CN109532733A (en) * | 2018-10-09 | 2019-03-29 | 安徽信息工程学院 | The anti-error collision device of automobile and its control method |
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| CN109532729B (en) * | 2018-11-23 | 2021-06-18 | 淮安聚友新能源科技有限公司 | Shock-absorbing and anti-collision automobile front bumper |
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| CN112406754B (en) * | 2020-11-04 | 2022-07-12 | 东风越野车有限公司 | Vehicle collision buffer device and vehicle |
| CN113665515A (en) * | 2021-09-14 | 2021-11-19 | 李全星 | New energy automobile anti-collision protection device and anti-collision protection method thereof |
| CN114043956B (en) * | 2021-11-15 | 2022-09-06 | 东风柳州汽车有限公司 | Air bag grading explosion control method, device, equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5111172Y2 (en) * | 1971-05-10 | 1976-03-25 | ||
| CN2417076Y (en) * | 2000-03-27 | 2001-01-31 | 李洪儒 | Bumper with means to absorb impact for automobiles |
| US9150175B1 (en) * | 2014-09-18 | 2015-10-06 | Ford Global Technologies, Llc | Vehicle front end airbag assembly and system |
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2016
- 2016-06-07 CN CN201610397364.7A patent/CN105946755B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239468A (en) * | 2019-06-06 | 2019-09-17 | 南京理工大学 | A kind of adjustable air energy-absorbing bumper of buffer intensity and its energy-absorbing method |
| CN110239468B (en) * | 2019-06-06 | 2021-09-28 | 南京理工大学 | Air energy absorption bumper with adjustable buffer strength and energy absorption method thereof |
| WO2021159119A1 (en) * | 2020-02-06 | 2021-08-12 | Weeks Bruce V | Impact absorption elements, systems, and methods of use |
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| CN105946755A (en) | 2016-09-21 |
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