CN109803841A - A kind of tire and vehicle - Google Patents
A kind of tire and vehicle Download PDFInfo
- Publication number
- CN109803841A CN109803841A CN201780039045.1A CN201780039045A CN109803841A CN 109803841 A CN109803841 A CN 109803841A CN 201780039045 A CN201780039045 A CN 201780039045A CN 109803841 A CN109803841 A CN 109803841A
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- China
- Prior art keywords
- tire
- tread contour
- piezoelectric film
- annulus
- crown
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
Abstract
A kind of tire (100), the internal multiple piezoelectric film sensors of circumferentially segmented setting (10) along the tire (100) of the tire (100), each piezoelectric film sensor (10) are respectively used to detect the tire pressure on the sectional area of the corresponding tire (100) in its position.Since piezoelectric film sensor (10) can utilize piezoelectric current caused by the deformation of itself to power, it is therefore desirable to which the external world is additionally provided power supply.A kind of vehicle is further related to, which includes above-described tire (100).
Description
Technical field
This application involves tire pressure monitoring technical fields, more particularly to a kind of tire and vehicle.
Background technique
With the development of society, traffic safety problem has become global big problem, and the safety of automobile is to people
The influence of class lives and properties be it is self-evident, while the car is driving, the tire that happens occasionally is blown out suddenly is easy to cause vapour
Vehicle is out of control to cause traffic accident, therefore vehicle security drive is increasingly taken seriously.With the progress of automotive engineering, automobile
Safety be also refined, traditional passive security far can not avoid traffic accident generation, therefore active safety is more next
More paid attention to by everybody.Device for monitoring tyre pressure is as active safety technologies, and external commonly used, domestic main engine plants also exist one after another
Device for monitoring tyre pressure is configured in high-equipped vehicle model.Existing device for monitoring tyre pressure majority needs the power supplies such as lithium battery to work, and
Pressure sensor is mainly placed in a certain position of tire by current tire pressure monitoring system, is not able to achieve whole pressure of tire border
Monitoring.
Summary of the invention
In order to solve the above technical problems, the application provides a kind of tire and the vehicle with this tire, can be not necessarily to
The tire pressure of tire is detected in the case where external world's power supply, and the tire pressure variation of tire can be reacted comprehensively.
In order to solve the above technical problems, the technical solution that the application uses is: a kind of tire is provided, in the tire
Along the multiple piezoelectric film sensors of circumferentially segmented setting of the tire, each piezoelectric film sensor is respectively used to examine in portion
Survey the tire pressure on the sectional area of the tire corresponding to it.
The application also provides a kind of vehicle, which includes above-described tire.
The beneficial effect of the application is: be in contrast to the prior art, the application by inside tires along tire
The circumferentially segmented multiple piezoelectric film sensors of setting detect the corresponding tire in its position by piezoelectric film sensor and are segmented
The tire pressure in region.Since piezoelectric film sensor can utilize the power supply of piezoelectric current caused by the deformation of itself, nothing
The external world is needed to be additionally provided power supply.
Detailed description of the invention
Fig. 1 is part the schematic diagram of the section structure in one embodiment of the application tire；
Fig. 2 is part the schematic diagram of the section structure in another embodiment of the application；
Fig. 3 is the structural schematic diagram that sensor is distributed in the another embodiment of the application；
Fig. 4 is the flow diagram of one embodiment of the application tire pressure monitoring method；
Fig. 5 is the flow diagram of another embodiment of the application tire pressure monitoring method；
Fig. 6 is the flow diagram of the another embodiment of the application tire pressure monitoring method；
Fig. 7 is the flow diagram of the application tire pressure monitoring method a further embodiment；
Fig. 8 is the structural schematic diagram of one embodiment of the application tyre skidding rate computing device.
Specific embodiment
Explain the structure and tire pressure monitoring method of tire in conjunction with the embodiments below by way of attached drawing.
Referring to Fig. 1, tire 100 provided by the present application is applied on vehicle.Week of the inside of the tire 100 along tire 100
To the multiple piezoelectric film sensors 10 of subsection setup.Each piezoelectric film sensor 10 is respectively used to detect its position correspondence
Tire 100 sectional area on tire pressure.
Since piezoelectric film sensor 10 can be powered using piezoelectric current caused by itself deformation, there is no need to the external worlds
It is additionally provided power supply.Replacement battery or the operation to inconveniences such as battery chargings are saved, because tire 100 once completes
Be inconvenient to open, tire 100 itself can be damaged if opening.
Specifically, the tire 100 includes crown 20, the outer surface of crown 20 is provided with along the circumferentially segmented setting of tire 100
Multiple tread contours 22.Further, tread contour 22 is divided into the tyre surface that at least two groups are parallel to each other along the axial direction of tire 100
Decorative pattern annulus 222, the laterally disposed of tread contour annulus 222 have smooth annulus 242, i.e. outer surface is smooth part.Tire
100 inside includes primer layer 30, crown protective layer 40 and crown belt 50 positioned at 30 inside of primer layer.
In one embodiment, piezoelectricity is provided at the position that the inside of tire 100 at least corresponds to a tread contour 22
Thin film sensor 10, to generate the tire pressure for detecting the tread contour 22 when deformation in tread contour 22.Such as Fig. 2, as tire
It is preced with a tread contour 22 on 20 surfaces.Further, in order to preferably detect the tire pressure of tire 100 everywhere, another implementation
A piezoelectric film sensor 10 is respectively provided at each 22 position of tread contour in example.It is able to detect that on tire 100 in this way
The tire pressure of all tread contours 22 changes, and data are more complete, improves according to detected tire pressure or is believed by tire pressure
Breath calculates the state that the deformation data obtained judges tire, the accuracy of vehicle drive situations and road conditions.Different embodiments
In on each tire not necessarily each 22 position of tread contour be respectively provided with a piezoelectric film sensor 10, can be spaced pre-
If number arranges one, this is not specifically limited.
Specifically, piezoelectric film sensor 10 is arranged between tread contour 22 and primer layer 30 in the present embodiment.In this way
Recently from tread contour 22, tire pressure detected is most accurate for piezoelectric film sensor 10.It in other embodiments can also be with
Piezoelectric film sensor 10 is set between crown protective layer 40 and primer layer 30.Or it is set to crown protective layer 40 and tire
It is preced between belt 50.
It, can subsection setup has multiple piezoelectric membranes to pass respectively at least two tread contour annulus 222 in one embodiment
Sensor 10.It is passed specifically, each tread contour 22 on each tread contour annulus 222 is correspondingly arranged a piezoelectric membrane
A piezoelectric film sensor 10 is arranged in sensor 10, or the two or more tread contours 22 in interval.Further, another embodiment
In, also subsection setup has multiple piezoelectric film sensors 10 to smooth annulus 242.
In embodiment as shown in Figure 1, smooth annulus 242 is located at the both sides of the edge of crown 20, and tread contour annulus 222
Between smooth annulus 242.Other embodiments are also possible to the both sides of the edge that tread contour annulus 222 is located at crown 20, smoothly
Annulus 242 is between tread contour annulus 222；Or the peaceful slip ring band 242 of tread contour annulus 222 is spaced setting.
It is piezoelectric membrane distributed architecture schematic diagram with further reference to Fig. 3.Corresponding to embodiment shown in FIG. 1, the embodiment
In, tread contour annulus 222 is equipped with three groups, and the piezoelectric membrane 10 in the area A shown in Fig. 3, the area B and the area C, which respectively corresponds, to be set to
Three groups of 222 corresponding positions of tread contour annulus.In another embodiment, Fig. 3 may also indicate that another distribution, for example, the area A and
The piezoelectric membrane 10 in the area C, which respectively corresponds, is set to smooth 242 corresponding position of annulus；The piezoelectric membrane 10 in the area B is correspondingly arranged in
222 corresponding position of tread contour annulus.
Further, in the present embodiment, tire 100 further includes that the intelligence sample module 70 being electrically connected with each other and information are sent
Module 80.As shown in figure 3, the piezoelectric film sensor 10 on same annulus is electrically connected by conducting wire 60, and and intelligence sample
Module 70 is electrically connected, and intelligence sample module 70 is for collecting the tire pressure that piezoelectric film sensor 10 successively issues.Information hair
Send module 80 for outwardly sending tire pressure or calculating the deformation data obtained through tire pressure.Specifically, information is collected
It can be wire transmission between module 70 and information sending module 80, can also be passed by bluetooth or wireless signal
It is defeated.
It can not also include information collection module 70 and information sending module 80 it should be understood that in other embodiments, and
It is to be sent out detected tire pressure by bluetooth or wireless signal by piezoelectric film sensor 10 itself.
The application is designed using such structure, has structure simple, and integrated level is high, and response is fast, and is detected tire pressure and be not necessarily to
The features such as external world's power supply.
The application also provides a kind of vehicle, which includes tire 100 described in above embodiments.
The application inside tire 100 by being arranged piezoelectric film sensor 10, on the one hand in detection 100 tire pressure of tire
When without extraneous power supply, on the other hand according to detected tire pressure or tire pressure can be passed through calculate the shape obtained
Become the state that information judges tire, vehicle drive situations and road conditions etc..Therefore driving can be greatly increased using the tire 100
Safety.
Based on the structure of various tires provided by above embodiments, present invention also provides a kind of tire information monitoring sides
Method.
It referring to fig. 4, is the flow diagram of tire pressure monitoring method in one embodiment of the application.
Method includes the following steps:
S110: the tire pressure of acquisition tire during rotation when being contacted with ground.
Specifically, can be the tire pressure of acquisition tire one or more position in different embodiments.It is understood that
, it is only that some in tire puts corresponding tire pressure and is difficult to reflect the overall condition of entire tire, therefore this in an embodiment
The tire pressure of multiple sectional areas in tire circumferential direction has been counted in embodiment.Convenient for subsequently through averaging, or each segmentation
The modes such as regional correlation judge tire state in which.Specifically, the step includes: using in tire in an embodiment
Multiple sensors of portion and subsection setup detect the tire pressure of corresponding sectional area.It should be understood that specific
Sensor can be the piezoelectric film sensor in above embodiments tire, is also possible to other pressure sensors or pressure becomes
Send one of device or a variety of.
Referring to Fig. 5, step S110 in another embodiment specifically includes the following steps:
S1101: the tire segmentation in tire is chosen as measurement home block.
Select the node that one of tire segmentation in tire counts the beginning and end of Monday as one.Specifically
, the annulus on the same ring week is compared, can choose one of tread contour as measurement home block.
S1102: start the current statistic period when measuring the tire pressure on home block and being greater than or equal to threshold value, and acquire
Tire pressure on the measurement home block and the tire pressure rotated on subsequent other sectional areas with ground face contact with tire
Information.
S1103: when the tire pressure on measurement home block is more than or equal to threshold value again, terminate current statistic week
Phase.
I.e. to the measurement home block since when corresponding tire pressure on the measurement home block of tire is more than or equal to threshold value
Tire pressure then identify tire when being more than or equal to threshold value again and contact and rotate one week with bottom surface.
Specifically, in different embodiments, the tire of step S110 tire collected during rotation when being contacted with ground
Pressure information can be during tyre rotation the tire pressure an of position or the tire pressure of multiple positions, be also possible to
One week tire pressure collected of tyre rotation can also be the more week tire pressures collected of tyre rotation.
S120: the deformation quantity of tire is obtained according to tire pressure.
During rotation, the position of tire and ground face contact generates deformation and then generates tire pressure tire, therefore according to institute
Collected tire pressure counter can push away the deformation quantity for obtaining tire.
For tire after use after a period of time, each position is different from the friction level of bottom surface, therefore each position
Thickness also can difference.The position of different-thickness is produced deformation quantity and local pressure when ground face contact
Difference, therefore the deformations of tyre amount at each position can be reflected according to the tire pressure at each position of tire.
In one embodiment, step S120 specifically can be the mapping relations that a tire pressure size and deformations of tyre amount is stored in advance
Table.It then can be according to tire pressure from pre-stored mapping while counting the tire pressure at each position of tire or later
The deformations of tyre amount corresponding to it is searched in relation table.
S130: the equivalent redius of tire is calculated according to deformation quantity.
Specifically, each tire has a calibration radius, that is, calibration radius when tire shipment.Each tyre surface flower
Line is a part of tire, that is, the corresponding small a section arc length of each tread contour, when one or more tread contours by
When to geostatic pressure, i.e., corresponding deformation can be generated, the deformation quantity of tread contour can be calculated at this according to this
The corresponding equivalent redius of tread contour.Specifically, during tire rolls, mistake that each tread contour is squeezed by ground
Cheng Zhong, deformation quantity are curvilinear motion, are first gradually increased until largest deformation amount, as tire continues to roll, tire and ground
Contact position is gradually from current tread contour position to next tread contour transition, therefore the deformation quantity of current tread contour is again
It is gradually become smaller since maximum.Calculate the largest deformation amount that used deformation quantity when equivalent redius is the tread contour.
Further, equivalent redius is equal to the difference that calibration radius subtracts the largest deformation amount of corresponding tread contour.
S140: the slip rate of tire is calculated according to equivalent redius.
In one embodiment, include: according to the slip rate step that equivalent redius calculates tire
The slip rate is calculated according to the following formula:
S=| R2-R1 |/R2；
Wherein, S is the slip rate, and R1 is the equivalent redius, and R2 is the calibration radius of tire.The calibration radius of tire
Refer to the center of circle of tire to the distance of crown outer surface.
Tire pressure when the application during statistics tyre rotation with bottom surface by contacting, and according to the tire pressure institute
The deformations of tyre amount of reaction calculates the equivalent redius of tire, finally further calculates the slip rate of tire.According to what is be computed
Slip rate is the safety coefficient height that can be appreciated that tire, such as when slip rate is more than or equal to preset threshold, represents tire
Safety coefficient is low, there are biggish security risk, needs repairing or replaces, and reduces the probability for safety accident occur.
Referring to Fig. 6, in another embodiment, specifically, further comprising the steps of after the slip rate for calculating tire:
S210: judge whether slip rate is in first threshold range.
Specifically, if the slip rate of tire is too big, then it represents that tire is easy locking, and lateral attachment coefficient is small.For example, working as
When the slip rate of tire is 100%, then it represents that the complete locking of tire, lateral attachment coefficient is 0, that is, tire is in operation
In, it only slides and does not rotate.On the contrary, the braking adhesion coefficient of tire is lower if the slip rate of tire is too low, it is easy
Now it is difficult to the case where braking.For example, when the slip rate of tire is 0%, then it represents that the braking adhesion coefficient of tire is 0, brake
Failure.Both the above situation is all breakneck situation, so slip rate is needed to be maintained in the threshold range of a safety.
S220: if slip rate not in the first threshold range, issues hydropac.
When tire is during rotation and during ground friction, there is exception in one or more section tire pressures, then
The slip rate for the tire is finally reflected beyond first threshold range, hydropac is issued at this time, prompts driver to drive a vehicle and pacify
Entirely, even repair or replace the tire.
Further, in another embodiment, after the slip rate for calculating tire further include: according to more in the same tire
The otherness of the tire pressure of a sectional area is to judge tire state in which or drive road conditions.For example, working as tyre rotation
It finishing within one week, the tire pressure of each section of each tire side is significantly greater than the tire pressure of the tire other side in whole process, that
It then may determine that road surface is a slope at this time, thus prompting can be issued, such as: the section that you are driven is leaning stretch
Please slowly move ahead etc..
For another example, when the difference of tire pressure maximum in sectional areas multiple in tire and minimum tire pressure is more than or equal to preset threshold,
Then judge that local damage occurs in tire.It can then prompt tire local damage occur, or local damage will occur, please in time more
The prompting changed.
Further, in another embodiment, slip rate corresponding to the tire of vehicle front and back or tire pressure identification be may compare
Drive road conditions.Such as vehicle, when driving into another kind of section from a kind of section, the surface conditions in front and back section are different, the tire reacted
Press information difference, that is, slip rate different.Such as vehicle is when drive into coarse road surface from smooth road surface, before two tires
Tire pressure size be greater than the tire pressure sizes of two tires next certainly.
Further, the driving habit of the driving road condition analyzing driver identified in statistics available preset time period.Tool
Body, preset time can be one month, three months, half a year or 1 year, depending on actual conditions.Sentenced according to analysis
It is disconnected go out driver like driving on rural dirt road, highway, sandy soil perhaps lawn so can by other systems or
Platform is suitble to his commodity to user push.
It, can be in the tread contour annulus of tire 100 in order to keep finally obtained slip rate more accurate in one embodiment
222 and/or the equal grading ring of corresponding position of smooth annulus 242 set multiple sensors 10, to detect the different each sections of annulus
Tire pressure, and then obtain the slip rate of different annulus.The average value of the corresponding slip rate of different annulus is finally asked to obtain tire
Final slip rate.
Referring to Fig. 7, in an embodiment, calculate the final slip rate of tire the following steps are included:
S310: slip rate corresponding to tread contour annulus 222 is calculated
S320: slip rate corresponding to smooth annulus 242 is calculated
S330: it is calculated by the following formula the final slip rate of tire:
S3=S1 × (1/A)+S2 × (1/B)
Wherein S1 is slip rate corresponding to tread contour annulus 222, and S2 is slip rate corresponding to smooth annulus 242, A
For the reference pressure value of tread contour annulus 222, B is the reference pressure value of smooth annulus 242.Specifically, tread contour annulus
The reference pressure value of 222 peaceful slip ring bands 242 has measured when tire shipment to be provided.
It is mainly combined using wheel speed sensors and acceleration transducer to calculate slip rate indirectly in the prior art
Method.The system and device combined using wheel speed sensors and acceleration transducer is more scattered, and signal is easy to cause to transmit
The case where time delay.Therefore the application tyre skidding rate calculated more fast accurate, can more react the situation of tire various aspects.
Further, referring to Fig. 8, the application also provides a kind of tyre skidding rate computing device 200, the computing device 200 packet
Include the tire pressure acquisition module 90 and computing module 91 being electrically connected with each other.Specifically, tire pressure acquisition module 90 is used
In the tire pressure of acquisition tire during rotation when being contacted with ground.Computing module 91 is used to be obtained according to tire pressure and take turns
The deformation quantity of tire calculates the equivalent redius of tire according to deformation quantity, and the slip rate of tire is calculated according to equivalent redius.
The application also provides a kind of vehicle antilocking braking system, which includes the tyre skidding rate as described in above embodiments
Computing device.
Vehicle in one embodiment of the application includes tire and the vehicle antilocking braking system.Specifically, optionally, one implements
In example, inside tires along the multiple piezoelectric film sensors of circumferentially segmented setting of tire, use respectively by each piezoelectric film sensor
In detect its corresponding to tire sectional area on tire pressure.And then can during tyre rotation in time comprehensively
Obtain the tire pressure of tire everywhere.So that tire pressure collected is more accurate and comprehensive.
Further, the application also provides a kind of device with store function, which is stored with program data, intermediate range
Ordinal number evidence is performed the method as described in any of the above embodiment of realization.Optionally, the above-mentioned device with store function
It is one such to can be mobile unit, personal computer, server, the network equipment or USB flash disk etc..
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, all to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (10)
1. a kind of tire, which is characterized in that the inside tires are passed along the multiple piezoelectric membranes of circumferentially segmented setting of the tire
Sensor, each piezoelectric film sensor are respectively used to detect the tire pressure letter on the sectional area of the tire corresponding to it
Breath.
2. tire as described in claim 1, which is characterized in that the tire includes crown, the outer surface setting of the crown
There is the tread contour of circumferentially subsection setup, is arranged at the position for being internally corresponding to the tread contour of the tire
Piezoelectric film sensor is stated, to generate the tire pressure for detecting the corresponding tread contour when deformation in the tread contour.
3. tire as claimed in claim 2, which is characterized in that the tire further includes being located at tread contour described in inside tires
Primer layer；The piezoelectric film sensor is arranged between the tread contour and the primer layer.
4. tire as claimed in claim 2, which is characterized in that the tire further includes the crown on the inside of the primer layer
Protective layer and crown belt, the piezoelectric film sensor between the crown protective layer and the primer layer, or
The piezoelectric film sensor is between the crown protective layer and the crown belt.
5. tire as claimed in claim 2, which is characterized in that each tread contour is correspondingly arranged piezoelectric membrane sensing
Device.
6. tire as claimed in claim 2, which is characterized in that the tread contour is divided into mutually along the axial direction of the tire
At least two parallel tread contour annulus, subsection setup has multiple pressures at least two tread contours annulus respectively
Conductive film sensor.
7. tire as claimed in claim 6, which is characterized in that the crown outer surface further includes being set to the tread contour
The lateral smooth annulus of annulus, the smooth annulus subsection setup have multiple piezoelectric film sensors.
8. tire as claimed in claim 7, which is characterized in that the smooth annulus is located at the both sides of the edge of the crown, institute
Tread contour annulus is stated between the smooth annulus.
9. such as the described in any item tires of claim 1-8, which is characterized in that the tire further includes the letter being electrically connected with each other
Cease sampling module and information sending module, the piezoelectric film sensor on same circumference by conducting wire electric connection, and with it is described
The electrical connection of intelligence sample module；The intelligence sample module is for collecting the tire that the piezoelectric film sensor successively issues
Information is pressed, the information sending module is used to outwardly send the tire pressure or calculates the shape obtained through the tire pressure
Become information.
10. a kind of vehicle, which is characterized in that including the described in any item tires of claim 1-9.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/120232 WO2019127505A1 (en) | 2017-12-29 | 2017-12-29 | Tyre and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109803841A true CN109803841A (en) | 2019-05-24 |
Family
ID=66555102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780039045.1A Pending CN109803841A (en) | 2017-12-29 | 2017-12-29 | A kind of tire and vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109803841A (en) |
| WO (1) | WO2019127505A1 (en) |
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| CN111532277A (en) * | 2020-06-01 | 2020-08-14 | 中国第一汽车股份有限公司 | Vehicle terrain recognition system and method and vehicle |
| CN112124014A (en) * | 2020-08-18 | 2020-12-25 | 北京多贝力轮胎有限公司 | Super giant tire crown with monitoring sensor and tire |
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| ATE273142T1 (en) * | 2000-10-23 | 2004-08-15 | Michelin Soc Tech | DEVICE FOR DETECTING A DEFLECTED TIRE |
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| CN1852814A (en) * | 2003-08-19 | 2006-10-25 | 株式会社普利司通 | Sensor-incorporated tire and tire condition estimating method |
| JP2007163230A (en) * | 2005-12-12 | 2007-06-28 | National Institute Of Advanced Industrial & Technology | Tire pressure sensor and tire pressure monitoring system |
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| CN111532277A (en) * | 2020-06-01 | 2020-08-14 | 中国第一汽车股份有限公司 | Vehicle terrain recognition system and method and vehicle |
| CN111532277B (en) * | 2020-06-01 | 2021-11-30 | 中国第一汽车股份有限公司 | Vehicle terrain recognition system and method and vehicle |
| CN112124014A (en) * | 2020-08-18 | 2020-12-25 | 北京多贝力轮胎有限公司 | Super giant tire crown with monitoring sensor and tire |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019127505A1 (en) | 2019-07-04 |
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Application publication date: 20190524 |