CN103359037B - Crash sensor for vehicle - Google Patents
Crash sensor for vehicle Download PDFInfo
- Publication number
- CN103359037B CN103359037B CN201310097821.7A CN201310097821A CN103359037B CN 103359037 B CN103359037 B CN 103359037B CN 201310097821 A CN201310097821 A CN 201310097821A CN 103359037 B CN103359037 B CN 103359037B
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- CN
- China
- Prior art keywords
- vehicle
- collision
- row
- rigid element
- rigid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 230000006698 induction Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- 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
- B60R21/0136—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 actual contact with an obstacle, e.g. to vehicle deformation, bumper displacement or bumper velocity relative to the vehicle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Air Bags (AREA)
Abstract
A kind of collision sensing device for vehicle, which includes: longitudinal chamber, it includes fluid and there is at least one to be located at the sensor of the intracavitary deformation for induction cavity；And at least one close to chamber and is suitable for Receiving collision load and the impact load is transmitted to the rigid element of the lengthwise-extending region of chamber longitudinally extended.
Description
Technical field
The present invention relates to the sensors for being mountable on vehicle and be suitable for incuding vehicle and object collision.Specifically but it is non-only
One ground on bus, and is suitable for incuding the pressure sensing of vehicle and object collision the present invention relates to elongated vehicle is installed on
Device.
Background technique
Typically, the sensor based on acceleration or pressure causes when being collided with induction close to the deformed region of Vehicle structure
Acceleration or pressure.The parameter incuded in collision accident can be used in that restraint system, such as air bag is unfolded.It is well-known
, for example one or more pressure sensors are installed in front door chamber, pressure phase is typically observed in collision accident
Variation for atmospheric pressure about 8% to 10%.Pressure signal is directly proportional to the rate and amount that are punched into closed chamber.
Vehicle with longer vehicle body, such as bus, pressure sensor may be needed to cover multiple rows of seat,
It is exactly multiple lengthwise positions.However, such as can recorde in the pressure sensor of the intracavitary installation of rear portion body side with low vibration
The signal of width, and/or the fluctuation of positive or negative pressure can be incuded.This is attributed to many factors.
Firstly, the size of chamber is relative to long more of front door, so that volume change is fairly small.It can be to chamber in addition, lacking
Displacement the body Structure of resistance is provided, such as A and B column causes the more lateral displacements bigger than local deformation.Bus
Side surface configurations lack side support component usually to fight the intrusion of object, such as column.For such vehicle, it has been found that
It is difficult with traditional sensing setting and starts restraint system within the suitable period.
Further, the presence of inherent ruggedized construction, stabilization male member etc. can be as the baffle for reflecting or weakening pressure wave.
8% to 10% pressure change is no longer incuded in some positions, but is only capable of the variation of induction as little as 2%.Because of non-crash events
Pressure change, such as may be about 0.5% when by another vehicle.There is likely to be one or more to reduce pressure change
The leakage approach of (increase).Therefore, signal-to-noise ratio can be relatively low and be extremely important that restraint system and be unfolded improperly.
Further, because of the longer transmission range between the point of impingement and sensor position, there are signal delays.Vibration
Collide wave in dry air with about 340mm/ms(millimeter/millisecond) velocity of sound pass through construct.If the sensor distance point of impingement
Very remote, this can be fairly slow in side collision.
It needs to provide the sensing device without using big quantity sensor for elongated vehicle.Need to provide device to enhance collision thing
The signal generated in part.It needs to provide device to receive in the time earlier that sensed position allows than traditional device after an event
The signal generated in collision accident.
Summary of the invention
According to the first aspect of the invention, a kind of collision sensing device for vehicle is provided, which includes:
Longitudinal chamber it includes fluid and there is at least one to be located at the sensor of the intracavitary deformation for induction cavity；
And
At least one is close to chamber and is suitable for Receiving collision load and the impact load is transmitted to the lengthwise-extending region of chamber
The rigid element longitudinally extended.
The longitudinal chamber can be provided by elastic pipeline, such as tube of material.The pipeline may include elastic material, such as
PVC or silicon.
Selectively, longitudinal chamber can be provided by the inner cavity of layer of material.The layer material may include elastic material.
Longitudinal chamber can be sealing.Selectively, longitudinal chamber can be open at least one position.In hose
Fluid can just be pressurized or negative compression, so that sensor senses non-zero pressure before collision accident.
Fluid can be air.Selectively, fluid can be liquid.
Rigid element can be contacted with longitudinal chamber.
Rigid element may include wood materials.Selectively, rigid element may include rigidity plastics or metal.
The geometry of rigid element may be adapted to promote hardness.Rigid element can be on the direction of transfer of impact load
It is rigid.Rigid element can have low compressive tension on the direction of transfer of impact load.Rigid element can remove
There is smaller hardness on other directions of direction of transfer.
Rigid element can arrive firmly enough to be transmitted to impact load lengthwise-extending region and has elasticity in other aspects.
Rigid element can be with buckling vehicle is auxiliarily fixed.
Device can be fixed between two panels of vehicle.
Rigid element may include one or more rigid bodies longitudinally extended.The rigid body can be set into it is multiple rows of, often
One row is substantially parallel to longitudinal chamber.First row can be contacted with longitudinal chamber.Second row can be with the plate contact of vehicle.
At least a row may include multiple main bodys.At least two rows may include multiple main bodys and the main body can in a row be set
It sets, so that row's main body staggeredly or is deviated relative to another plate-laying.
Selectively, a row may include single rigid body.Single rigid body can connect with multiple rigid bodies of another row
Touching.
Sensor can be pressure sensor.Pressure sensor can be differential pressure pickup.Differential pressure pickup can be set
To provide information in position of collision.
According to the second aspect of the invention, the vehicle including collision sensing device according to the first aspect of the invention is provided
?.
Collision sensing device can be operatively attached to the safety restraint system of vehicle, so that the exhibition when sensing collision
Open restraint system.
Vehicle can be elongated vehicle, such as bus.
Detailed description of the invention
Referring to the drawings, only as the example embodiment that the present invention will be described in detail, in which:
Fig. 1 is mounted in the first implementation of the collision sensing device between two panels of vehicle and before collision accident
The perspective view of example.
Fig. 2 is the perspective view of the device of Fig. 1 after collision accident；
Fig. 3 is the side view of the device of Fig. 1；
Fig. 4 is the plan view of the device of Fig. 1；
Fig. 5 is the plan view of the second embodiment of collision sensing device；And
Fig. 6 is the curve graph of the pressure change that is measured in collision accident relative to the time.
Specific embodiment
Fig. 1 and Fig. 2 shows vehicles 100, is bus in figure comprising two vertical side panels, it is specifically outer
Panel 102 and inner panel 104.It can be seen that collision sensing device between two panels in Fig. 1.
As shown in Figure 3 and Figure 4, collision sensing device includes the longitudinal chamber of 10 form of elastic pipeline or hose.Hose 10 by
PVC is made, and is sealing in each end, and include the fluid of gaseous form.The specific lengthwise position being mounted in hose 10
Be pressure sensor 12, the pressure change of the air in hose 10 can be incuded.If hose 10, which is compressed or deformed, to be made
The internal volume for obtaining hose 10 reduces, then will generate pressure change.Pressure sensor 12 can be along each position of hose 10
Installation, but be mounted in shown in Fig. 3 close to one end of hose 10.
Collision sensing device further includes rigid element, and it includes multiple rigid plate 20(figures longitudinally extended as shown in Figure 4
One of these is only shown) in 3.Plate 20 is made and is arranged close to of timber hose 10 and is arranged at two rows.In fact,
Interior row contacts (although this is not shown in figs. 3 and 4) with hose 10.The outlet of plate 20 contacted with interior row and with outer panels 102
Contact.Plate 20 is set in a row so that a plate-laying 20 is interlocked or deviated relative to other plate-layings.
The plate 20 and hose 10 contacted with each other with outer panels 102 is suitable for receiving the impact load for being applied to outer panels 102
110, and send the impact load 110 to hose 10.
The geometry of plate 20 is suitable at least being lifted up rigidity in the sender of impact load.Plate 20 is relative to sender
To with relatively large transverse width, so that bending is reduced to minimum.Moreover, wood materials have low compressive tension.
Anyway, plate 20 has elasticity to allow certain global bucklings, to be auxiliarily fixed between panel.
Fig. 4 shows the impact load 110 for being applied to the specific position of outer panels 102, and in this case, the position is longitudinal
Position far from pressure sensor 12.Because plate 20 is rigid, impact load 110 is in the longitudinal extension for being sent to hose 10
Region 26 before, be first sent to the first plate 22 of outlet, be then delivered to two plates 24 of interior row.
This causes the obvious compression of hose 10, and therefore causes the relatively high pressure that will be sensed by pressure sensor 12
Variation.Moreover, impact load 110 is very high by the speed that rigid body transmits.
In an alternate embodiment, fluid can be liquid, such as water, rather than air.Impact load 110 passes through
The speed of water transmission is about 1450mm/ms, this is apparently higher than air.
Fig. 6 is the curve graph of the pressure change that is measured in collision accident relative to the time.Initial pressure is atmospheric pressure, because
This is about 1 bar (bar)., it can be seen that pressure change quickly rises to 0.2 bar from 0 bar after collision.This indicates that 20% pressure becomes
Change, it is permitted that this is substantially greater than traditional device.Therefore, the value that pressure sensor 12 incudes has been exaggerated.Constraint system
Unite incorrect expansion a possibility that therefore greatly reduce.Moreover, the present invention allows the sensor using minimum number.
Fig. 5 shows the second embodiment of collision sensing device, and identical feature is marked with identical appended drawing reference.
In this embodiment, outlet 30 includes the single rigid body 30 for being parallel to the extension of hose 10.Interior row 32 includes multiple
Stiff Block 32.It is fast that the load is theoretically transmitted to each rigidity by the impact load that outer panels 102 are applied to outlet 30
32, although actually component is not perfect rigidity, and more multi-load will be received closer to the block of position of collision 32.No matter such as
What, impact load is transmitted to most of lengthwise-extending region of hose 10 by block 32.
The present invention on the side panel of elongated vehicle especially have advantage, but its on any vehicle, in any of vehicle
It still is able to provide preferably induction and response faster (for example, preceding collision or pedestrian's induction) on position.
The pressure sensor used can be differential pressure pickup.Each transverse side of such sensor determination sensor
Pressure difference.This feature can be used in providing information (side of the sensor at least occurred in collision) in position of collision.This energy
It is enough in and takes collision accident more intelligent response, such as restraint system only is unfolded in the main region of position of collision.
In certain embodiments, hose is sealing.Fluid in hose can be positive (or negative) and be pressurized, so that sensor
Non-zero pressure is sensed at nominal conditions.This can be used in checking sensor at work, and hose is not revealed.
It is above-mentioned that specific embodiments of the present invention have been disclosed, it should be understood that the deformation of these embodiments still falls within this
The protection scope of invention.
Claims (22)
1. a kind of collision sensing device for vehicle, which is characterized in that the device includes:
Longitudinal chamber it includes fluid and there is at least one to be located at the sensor of the intracavitary deformation for induction cavity；And
At least one is close to chamber and is suitable for Receiving collision load and the impact load is transmitted to the vertical of the lengthwise-extending region of chamber
To the rigid element of extension,
Rigid element arrives firmly enough to be transmitted to impact load lengthwise-extending region and has elasticity in other aspects,
Rigid element includes one or more longitudinal extended rigid bodies, and the rigid body is arranged to multiple rows of, and at least a row includes
Multiple main bodys.
2. the apparatus according to claim 1, which is characterized in that the longitudinal chamber is provided by elastic pipeline.
3. device according to claim 1 or 2, which is characterized in that the longitudinal chamber is sealing.
4. device according to claim 3, which is characterized in that the fluid in hose is just being pressurized or negative compression, so that sensing
Device senses non-zero pressure before collision accident.
5. the apparatus according to claim 1, which is characterized in that fluid is air.
6. the apparatus according to claim 1, which is characterized in that fluid is liquid.
7. the apparatus according to claim 1, which is characterized in that rigid element is contacted with longitudinal chamber.
8. the apparatus according to claim 1, which is characterized in that rigid element includes wood materials.
9. the apparatus according to claim 1, which is characterized in that rigid element is rigidity on the direction of transfer of impact load
, there is smaller hardness on other directions in addition to direction of transfer.
10. the apparatus according to claim 1, which is characterized in that rigid element has on the direction of transfer of impact load
Low compressive tension.
11. the apparatus according to claim 1, which is characterized in that rigid element can buckling vehicle is auxiliarily fixed
?.
12. the apparatus according to claim 1, which is characterized in that each row is substantially parallel to longitudinal chamber.
13. device according to claim 12, which is characterized in that first row is contacted with longitudinal chamber.
14. device according to claim 13, which is characterized in that the plate contact of second row and vehicle.
15. device according to claim 12, which is characterized in that wherein a row includes single rigid body, the single rigidity
Body is contacted with multiple rigid bodies.
16. device according to claim 12, which is characterized in that at least two rows are comprising multiple main bodys and the main body is in a row set
It sets, so that row's main body staggeredly or is deviated relative to another row's main body.
17. the apparatus according to claim 1, which is characterized in that sensor is pressure sensor.
18. device according to claim 17, which is characterized in that pressure sensor is differential pressure pickup.
19. device according to claim 18, which is characterized in that differential pressure pickup is set as providing letter in position of collision
Breath.
20. a kind of vehicle including collision sensing device described in aforementioned any claim.
21. vehicle according to claim 20, which is characterized in that collision sensing device is operably connected to the peace of vehicle
Staff cultivation system, so that restraint system expansion when sensing collision.
22. vehicle according to claim 21, which is characterized in that vehicle is elongated vehicle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1205219.7A GB2500595B (en) | 2012-03-26 | 2012-03-26 | Impact sensor for a vehicle |
| GB1205219.7 | 2012-03-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103359037A CN103359037A (en) | 2013-10-23 |
| CN103359037B true CN103359037B (en) | 2019-04-19 |
Family
ID=46087072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310097821.7A Expired - Fee Related CN103359037B (en) | 2012-03-26 | 2013-03-25 | Crash sensor for vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103359037B (en) |
| GB (1) | GB2500595B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109786600A (en) * | 2018-12-30 | 2019-05-21 | 浙江众泰汽车制造有限公司 | A kind of collision protection system and method for new-energy automobile power battery |
| CN110884457B (en) * | 2019-12-09 | 2021-01-19 | 无锡商业职业技术学院 | Front collision triggering system of automobile safety airbag based on mercury switch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101048300A (en) * | 2004-10-28 | 2007-10-03 | 株式会社电装 | Collision detection device and method of manufacturing the same |
| CN101384453A (en) * | 2006-02-15 | 2009-03-11 | 丰田自动车株式会社 | Vehicle bumper structure |
| DE102011053076A1 (en) * | 2010-09-09 | 2012-03-15 | Denso Corporation | Collision detection device for vehicle, has chamber unit which is placed in bumper cover and before bumper support, where chamber unit defines chamber space |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3463510B2 (en) * | 1997-05-16 | 2003-11-05 | トヨタ自動車株式会社 | Side collision sensor mounting structure |
| JP4330073B2 (en) * | 2005-04-04 | 2009-09-09 | 株式会社デンソー | Vehicle collision detection device |
| JP2007183100A (en) * | 2005-12-29 | 2007-07-19 | Tokai Rubber Ind Ltd | Collision sensor for vehicle |
| JP4403517B2 (en) * | 2007-07-13 | 2010-01-27 | 株式会社デンソー | Vehicle collision detection device |
| JP4375451B2 (en) * | 2007-07-13 | 2009-12-02 | 株式会社デンソー | Vehicle collision detection device |
| JP4497182B2 (en) * | 2007-07-23 | 2010-07-07 | 株式会社デンソー | Collision detection device |
-
2012
- 2012-03-26 GB GB1205219.7A patent/GB2500595B/en not_active Expired - Fee Related
-
2013
- 2013-03-25 CN CN201310097821.7A patent/CN103359037B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101048300A (en) * | 2004-10-28 | 2007-10-03 | 株式会社电装 | Collision detection device and method of manufacturing the same |
| CN101384453A (en) * | 2006-02-15 | 2009-03-11 | 丰田自动车株式会社 | Vehicle bumper structure |
| DE102011053076A1 (en) * | 2010-09-09 | 2012-03-15 | Denso Corporation | Collision detection device for vehicle, has chamber unit which is placed in bumper cover and before bumper support, where chamber unit defines chamber space |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201205219D0 (en) | 2012-05-09 |
| GB2500595B (en) | 2017-08-23 |
| CN103359037A (en) | 2013-10-23 |
| GB2500595A (en) | 2013-10-02 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190419 Termination date: 20200325 |
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