WO1998056606A1 - Surveillance d'un pneumatique par mesure d'acceleration - Google Patents
Surveillance d'un pneumatique par mesure d'acceleration Download PDFInfo
- Publication number
- WO1998056606A1 WO1998056606A1 PCT/FR1998/001014 FR9801014W WO9856606A1 WO 1998056606 A1 WO1998056606 A1 WO 1998056606A1 FR 9801014 W FR9801014 W FR 9801014W WO 9856606 A1 WO9856606 A1 WO 9856606A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tire
- sensor
- vehicle
- wheel
- acceleration
- Prior art date
Links
- 230000001133 acceleration Effects 0.000 title claims abstract description 29
- 238000005259 measurement Methods 0.000 title claims abstract description 26
- 238000012544 monitoring process Methods 0.000 title claims abstract description 8
- 230000008878 coupling Effects 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 15
- 101000714243 Homo sapiens Transcription factor IIIB 90 kDa subunit Proteins 0.000 claims abstract description 7
- 101000802094 Homo sapiens mRNA decay activator protein ZFP36L1 Proteins 0.000 claims abstract description 7
- 102100034702 mRNA decay activator protein ZFP36L1 Human genes 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 5
- 230000005291 magnetic effect Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 2
- 101150093044 SVF1 gene Proteins 0.000 claims 2
- -1 BVF1 Proteins 0.000 claims 1
- 238000007493 shaping process Methods 0.000 claims 1
- 101000740968 Homo sapiens Transcription factor IIIB 50 kDa subunit Proteins 0.000 abstract description 11
- 101000802101 Homo sapiens mRNA decay activator protein ZFP36L2 Proteins 0.000 abstract description 11
- 102100034703 mRNA decay activator protein ZFP36L2 Human genes 0.000 abstract description 11
- 230000006870 function Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 101150075317 bfr1 gene Proteins 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- 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
- B60C23/06—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle
- B60C23/064—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle comprising tyre mounted deformation sensors, e.g. to determine road contact area
-
- 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
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/041—Means for supplying power to the signal- transmitting means on the wheel
- B60C23/0413—Wireless charging of active radio frequency circuits
-
- 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
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
- B60C23/0447—Wheel or tyre mounted circuits
- B60C23/0455—Transmission control of wireless signals
- B60C23/0461—Transmission control of wireless signals externally triggered, e.g. by wireless request signal, magnet or manual switch
-
- 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
- B60C23/0486—Signalling devices actuated by tyre pressure mounted on the wheel or tyre comprising additional sensors in the wheel or tyre mounted monitoring device, e.g. movement sensors, microphones or earth magnetic field sensors
- B60C23/0488—Movement sensor, e.g. for sensing angular speed, acceleration or centripetal force
Definitions
- the invention relates to in-service monitoring of the condition of a tire on a vehicle wheel.
- the present invention improves the situation.
- the invention also relates to a device for monitoring in service the state of a tire of a wheel of a vehicle, of the type comprising a sensor mounted on the wheel, coupling means for transmitting to the vehicle indications drawn from this sensor, and power supply means.
- the sensor is a miniature sensor sensitive to acceleration, located in the tread of the tire or in the vicinity thereof; and the coupling means, mounted on the wheel, transmit indications relating to the measurements made when the tread is in contact with the ground.
- the invention also covers the tire equipped accordingly.
- FIG. 1 schematically illustrates a tire, mounted on a wheel, and loaded
- FIG. 1 illustrates the installation of an accelerometer in the tire of Figure 1;
- FIG. 3 illustrates electronic circuits relating to an embodiment of the invention
- FIG. 4 illustrates the mode of information exchange between the wheel and the vehicle, as well as the passage of the power supply
- FIG. 6 schematically illustrates the general shape of the acceleration
- FIG. 7 (a and b) schematically illustrate a first form of accelerometer applicable to the invention
- - Figure 8 illustrates the voltage across the piezoelectric sensor of Figures 7 for different rotational speeds depending on the wheel angle;
- - Figure 9 illustrates the relationship between true acceleration and the peak voltage measured due to the acceleration limiter of Figures 7;
- FIG. 10 schematically illustrates a second form of accelerometer applicable to the invention
- a rim 2 provided with fixing points 31 on the hub, supports a tire 1 (assumed here without an inner tube), and the inflation valve (21) thereof.
- FIG. 2 shows the tire, with one of the sidewalls 11, and its tread 10 seen in section.
- the accelerometer 4 is associated with an electronic microcircuit 5.
- the latter can be supplied in various ways: battery, recovery of mechanical energy, in particular.
- a BRFl (open) loop is provided in the tire.
- the ECR assembly circuit includes a capacitor 61 for tuning this loop to the frequency F1, and a diode rectifier 65 and capacitor 66 for storing energy and filtering the voltage. The voltage obtained supplies the circuit 5 for processing the measurements of the sensor 4.
- a source SI of alternating voltage at frequency Fl, of internal resistance 101 feeds a capacitive divider of tuning 102-103, then a BVF1 loop, mounted (FIG. 4) to be coupled with the BRF1 loop on a part from the periphery of the tire.
- the size of the BVF1 loop can correspond to approximately 1/10 of the tire development.
- the illustration of the BRF1 loop is here separated from the part of the periphery of the tire, so that it can be distinguished from the BRF2 loop, which will be discussed below.
- FIG. 12 provides a better understanding of the relative position in the tire of the loops BFR1 and BRF2 associated with the ECR circuit, in one embodiment.
- the BRFl loop thus made allows permanent coupling of the power supplied by the BVF1 loop.
- Such an emission of the order of one Watt makes it possible to obtain at least a few milliwatts of continuous supply for the ECR circuit, whatever the relative positions of the wheel and of the vehicle (suspension and steering, in particular).
- the output of the processing circuit 5 is a voltage of frequency F2 modulated, and applied through a capacitive tuning divider 91-92 to a loop BRF2 of the tire.
- a BVF2 loop is provided with two 111-112 tuning capacitors. These provide an asymmetrical output, applied to a reception and processing circuit 120.
- this circuit 120 can receive three other channels V2, V3 and V4 coming from the other tires.
- the transmission from channels VI, V2, V3 and V4 to the reception circuit 120 can be done separately or in parallel.
- a display member 130 is associated with it, or better the transfer of information is done by means of the on-board computer connected to an integrated display.
- An emission by the BRF2 loop of the order of one milliWatt makes it possible to obtain a few microwatts at the output of the BVF2 loop associated with the vehicle. This level is largely sufficient to process the information, while remaining low enough not to disturb the electromagnetic environment.
- the frequency F1 is for example between 10 and 200 kHz, preferably around 50 kHz.
- the frequency F2 is chosen to be clearly different in order to avoid coupling between them of the loops BRF1 with BRF2, and BVF1 with BVF2; F2 is preferably higher, around 80 kHz for example.
- the BRFl or BRF2 loops included in the tire are wound so as to allow longitudinal elasticity for easy fitting. Rather than a conventional winding process ( Figure 11a), an undulation is created, as shown in Figure 11b for example.
- Figure 11a a conventional winding process
- Figure 11b an undulation is created, as shown in Figure 11b for example.
- the coils can be incorporated into the tire in its tread, above its frame (radially outwards), the frame being metallic or not. However, this makes it necessary to provide the connections to these coils during the manufacture of the tire.
- An interesting variant (FIG. 12) consists in placing the coils on the mold used for manufacturing the tire, which is then implanted around the coils; it is then possible to obtain better mechanical strength (elastic behavior under stresses) of the coils, and their connections can be welded beforehand, the coil and ECR circuit assembly forming a modular sub-assembly.
- Litz wires known in the windings of radio stations with amplitude modulation, long and / or medium waves.
- a tire of radius R has a peripheral speed V.
- an area BC of this tire, of length L is in contact with the ground.
- the centrifugal radial acceleration is V 2 / R.
- the centrifugal radial acceleration is substantially zero, the differential speed of the tire with respect to the ground being substantially zero (except in the event of slippage, which is not normal operation).
- the length L is a function:
- Factors a) and c) can be determined by an easily accessible calculation on board the vehicle. The pressure is therefore drawn from it. It should be noted that the law relating the length L to the speed V and to the wheel load can be tabulated for the vehicle in question, depending on the ambient temperature. At low speeds, the effect of the wheel load is predominant; it is therefore possible to refine the taking into account of this wheel load, if necessary, or to compare differentially the pairs of Front and Rear wheels, between them and from pair to pair. It then suffices to measure and transmit the durations TL and Tp of the tire to the vehicle. This can be done by analog or digital modulation of the carrier F2 by the acceleration signals.
- circuit 5 It is easy to add to circuit 5 a circuit sensitive to temperature, for example a diode.
- the temperature information is then available, and can be transmitted with the acceleration information.
- analog modulation may be suitable.
- the simplest is an amplitude modulation by the signal of figure 6: one transmits during the periods TL. Much more advanced modulations are possible. If necessary, the temperature is transmitted by frequency or phase modulation of the carrier F2.
- Circuit 5 has a clock to create the frequency F2 whose stability is compatible with the tuning band of the loops.
- the frequency F1 of the power supply can be used to stabilize or set this clock. It has been observed experimentally that a variation in the tuning band of the loops appears, but this variation remains sufficiently limited so as not to interfere with the operation.
- This clock F2 is used, after division, to count the durations TL and Tp.
- the average is done by simple accumulation of a predetermined number of measurements, or chosen according to the quality of the measurements, for example.
- the carrier transmits the measurement clock. If necessary, the temperature is transmitted as other data.
- this circuit 5 is therefore very simple, and can have a low power consumption.
- the principle of a usable accelerometer is illustrated in Figure 7A.
- a mass m is integral with a spring leaf recessed in Q.
- a piezoelectric sensor PC is fixed to the lower part of the spring leaf; this, by deforming under the effect of centrifugal force mainly concentrated in the mass m, compresses the PC component which provides the measurement, in the form of voltage (without having to be itself supplied).
- This voltage varies as a function of time and depends on the speed, as well as on the time constant of the circuit pC (capacitance C shunted by a leakage resistance p, as illustrated in FIG. 7b).
- a housing 180 forms an "aneroid" chamber, with a metallized membrane 181 at the top, provided with a mass 182.
- the interior of the housing is under vacuum (not pushed), as in a mechanical barometer.
- a capacity measurement CM is carried out between the mass 182, lower plane of the housing, and the membrane 181.
- the frequency source F2 is available, and for example, a standard capacity.
- the measurement indicates the tire pressure, with reduced precision which is sufficient to indicate whether the tire is in rolling condition or not; when running, when passing through the BC zone, the measurement varies abruptly, which serves as above. It is also possible to limit the value of the acceleration by limiting the stroke of mass 182 as above.
- a combined pressure and acceleration sensor is therefore obtained. It is of course possible to use separate sensors. Furthermore, instead of the capacitive measurement of the displacements of the membrane 181, other techniques can be provided, for example four strain gauges mounted in bridge on the membrane.
- the senor will have a natural frequency (resonance). As for the tire, it is also the site of periodic (short-term) phenomena, including the frequency of rotation of the wheel, which corresponds to frequencies ranging from 0 to one hundred Hertz (50 revolutions of the wheel per second make the '' order of 100 meters per second, or 360 km / hour).
- the natural frequency of the sensor outside of this band will be chosen, and / or it will be used to improve the quality of the response as a function of the period of rotation of the wheel, therefore of the speed of the vehicle.
- the Applicant has observed that the transmission by the loops BRF1 and BVF1 (and / or BRF2 and BVF2) can easily be made bi-directional. It is therefore interesting to add a non-volatile memory 121, of the epROM or eepROM type to the circuit in the tire. By temporarily increasing, if necessary, the power supply, the circuit 5 can write in this memory information which comes back to it from the unit 120, for example:
- Figure 3 If the calculations are made on board the vehicle, we can for example (Figure 3) provide a modulator 109 downstream of the resistor 101, and, on the reception side, a connection by series resistor 67, and parallel capacitance 68 to ground, therefore from one of the terminals of the coil BRFl to lead to a data input (at slow rate) from the unit 5.
- the switching of circuit 5 in reception on the BRF2 loop is preferably done by the appearance of an overvoltage applied to the BVF1 loop.
- This overvoltage is currently considered very advantageous to have sufficient energy for a good recording in memory of the parameters transmitted from the vehicle to the wheel concerned.
- a circuit similar to that used on the vehicle for a wheel can be used as a test bench to read the inscriptions stored in the tire and to manage them.
- the interaction of the BRF2 and BVF2 loops can be used for purposes other than the power supply.
- One can for example superimpose on the power supply a clock, a time reference, or another useful signal.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50169899A JP2002511812A (ja) | 1997-06-10 | 1998-05-20 | 加速度測定値によるタイヤのモニタリング |
AU77752/98A AU7775298A (en) | 1997-06-10 | 1998-05-20 | Monitoring a tyre by acceleration measurement |
US09/445,055 US6538566B1 (en) | 1997-06-10 | 1998-05-20 | Monitoring a tire by acceleration measurement |
EP98925760A EP0988160B1 (fr) | 1997-06-10 | 1998-05-20 | Surveillance d'un pneumatique par mesure d'acceleration |
DE69804098T DE69804098T2 (de) | 1997-06-10 | 1998-05-20 | Reifen kontroll system durch beschleunigungsmessung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9707180A FR2764241B1 (fr) | 1997-06-10 | 1997-06-10 | Surveillance d'un pneumatique par mesure d'acceleration |
FR97/07180 | 1997-06-10 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/445,055 A-371-Of-International US6538566B1 (en) | 1997-06-10 | 1998-05-20 | Monitoring a tire by acceleration measurement |
US10/288,812 Continuation US20030062994A1 (en) | 1997-06-10 | 2002-11-06 | Monitoring of a tire by acceleration measurement |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998056606A1 true WO1998056606A1 (fr) | 1998-12-17 |
Family
ID=9507809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1998/001014 WO1998056606A1 (fr) | 1997-06-10 | 1998-05-20 | Surveillance d'un pneumatique par mesure d'acceleration |
Country Status (7)
Country | Link |
---|---|
US (2) | US6538566B1 (fr) |
EP (1) | EP0988160B1 (fr) |
JP (1) | JP2002511812A (fr) |
AU (1) | AU7775298A (fr) |
DE (1) | DE69804098T2 (fr) |
FR (1) | FR2764241B1 (fr) |
WO (1) | WO1998056606A1 (fr) |
Cited By (11)
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EP1222080B1 (fr) * | 1999-10-01 | 2003-07-02 | The Goodyear Tire & Rubber Company | Procede de surveillance de l'etat d'un pneu |
WO2003053747A1 (fr) * | 2001-12-21 | 2003-07-03 | Kabushiki Kaisha Bridgestone | Procede et appareil pour l'estimation de l'etat de la surface d'une route et de l'etat de fonctionnement de pneumatiques, abs et commande de vehicule dans lesquels ils sont utilises |
US6624748B1 (en) | 1999-10-01 | 2003-09-23 | The Goodyear Tire & Rubber Company | Method for monitoring a condition of a tire |
JP2003285612A (ja) * | 2001-07-10 | 2003-10-07 | Soc D Technologie Michelin | 測定装置を備えたタイヤ |
GB2406170A (en) * | 2000-09-08 | 2005-03-23 | Automotive Tech Int | Tyre monitor which measures acceleration of tyre tread |
US7028732B1 (en) | 1999-10-01 | 2006-04-18 | The Goodyear Tire & Rubber Company | Apparatus for monitoring a condition of a tire |
US7313952B2 (en) | 2002-03-28 | 2008-01-01 | Pirelli Pneumatici S.P.A. | Method and system for monitoring instantaneous behavior of a tire in a rolling condition |
US7549327B2 (en) | 2001-02-16 | 2009-06-23 | Automotive Technologies International, Inc. | Tire-mounted energy generator and monitor |
US7693626B2 (en) | 2000-09-08 | 2010-04-06 | Automotive Technologies International, Inc. | Vehicular tire monitoring based on sensed acceleration |
US9046457B2 (en) | 2005-06-17 | 2015-06-02 | Kabushiki Kaisha Bridgestone | Road surface condition estimating method, road surface condition estimating tire, road surface condition estimating apparatus, and vehicle control apparatus |
DE10329700B4 (de) * | 2003-07-02 | 2016-12-15 | Continental Automotive Gmbh | Verfahren und Vorrichtung zur Ermittlung des Reifenfülldrucks und der Radlast eines Fahrzeugreifens |
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US7760080B2 (en) | 2000-09-08 | 2010-07-20 | Automotive Technologies International, Inc. | Tire monitoring with passive and active modes |
US8266465B2 (en) | 2000-07-26 | 2012-09-11 | Bridgestone Americas Tire Operation, LLC | System for conserving battery life in a battery operated device |
US7161476B2 (en) | 2000-07-26 | 2007-01-09 | Bridgestone Firestone North American Tire, Llc | Electronic tire management system |
US6575031B2 (en) | 2001-01-26 | 2003-06-10 | Mts Systems Corporation | Transducer for measuring displacement of a vehicle spindle |
US20030058118A1 (en) * | 2001-05-15 | 2003-03-27 | Wilson Kitchener C. | Vehicle and vehicle tire monitoring system, apparatus and method |
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EP1436632A1 (fr) * | 2001-10-05 | 2004-07-14 | Continental Teves AG & Co. oHG | Dispositif de detection combinee de l'acceleration d'essieu et de la vitesse de rotation des roues, ainsi que procede de determination de pression |
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WO2004056591A1 (fr) * | 2002-12-20 | 2004-07-08 | Pirelli Pneumatici S.P.A. | Compte-tours pour pneumatiques |
US7289022B2 (en) | 2003-06-05 | 2007-10-30 | Toyota Jidosha Kabushiki Kaisha | Communication system and method for communicating between a tire/wheel assembly and a vehicle body |
BR0318387A (pt) * | 2003-07-04 | 2006-07-25 | Pirelli | método para determinar uma carga exercida sobre um pneu encaixado em um veìculo durante a marcha do veìculo sobre uma superfìcie de rodagem, método para controlar um veìculo tendo pelo menos um pneu encaixado sobre o mesmo, e, sistema para determinar uma carga exercida sobre um pneu encaixado em um veìculo durante a marcha do veìculo sobre uma superfìcie de rodagem |
FR2858578B1 (fr) * | 2003-08-04 | 2006-02-24 | Michelin Soc Tech | Methode de fabrication d'un pneumatique comprenant au moins un insert |
JP4517610B2 (ja) * | 2003-09-16 | 2010-08-04 | トヨタ自動車株式会社 | タイヤ状態量検出装置 |
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JP2006090919A (ja) * | 2004-09-27 | 2006-04-06 | Yokohama Rubber Co Ltd:The | 加速度検出方法及びその装置、加速度センサモジュール並びにタイヤ |
BRPI0419077B1 (pt) * | 2004-09-29 | 2017-05-23 | Pirelli | método e sistema para determinar um ângulo de curvatura de um pneu durante o avanço do veículo, e método para controlar um veículo tendo pelo menos um pneu instalado no mesmo durante o avanço do mencionado veículo |
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JP4170994B2 (ja) | 2004-11-05 | 2008-10-22 | 横浜ゴム株式会社 | タイヤ接地パターン特定方法及びその装置 |
JP2006131116A (ja) * | 2004-11-05 | 2006-05-25 | Yokohama Rubber Co Ltd:The | 車両駆動制御システム及びセンサユニット並びにタイヤ |
JP4604677B2 (ja) * | 2004-11-19 | 2011-01-05 | 横浜ゴム株式会社 | タイヤ滑り状態検出方法及びタイヤ滑り状態検出装置 |
JP3895347B2 (ja) | 2004-11-19 | 2007-03-22 | 横浜ゴム株式会社 | タイヤ変形量算出方法及びタイヤ変形量算出装置 |
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Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
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US6624748B1 (en) | 1999-10-01 | 2003-09-23 | The Goodyear Tire & Rubber Company | Method for monitoring a condition of a tire |
EP1222080B1 (fr) * | 1999-10-01 | 2003-07-02 | The Goodyear Tire & Rubber Company | Procede de surveillance de l'etat d'un pneu |
US7028732B1 (en) | 1999-10-01 | 2006-04-18 | The Goodyear Tire & Rubber Company | Apparatus for monitoring a condition of a tire |
US7693626B2 (en) | 2000-09-08 | 2010-04-06 | Automotive Technologies International, Inc. | Vehicular tire monitoring based on sensed acceleration |
GB2406170A (en) * | 2000-09-08 | 2005-03-23 | Automotive Tech Int | Tyre monitor which measures acceleration of tyre tread |
GB2406170B (en) * | 2000-09-08 | 2005-05-04 | Automotive Tech Int | Vehicle wireless sensing and communication system |
US7549327B2 (en) | 2001-02-16 | 2009-06-23 | Automotive Technologies International, Inc. | Tire-mounted energy generator and monitor |
JP2003285612A (ja) * | 2001-07-10 | 2003-10-07 | Soc D Technologie Michelin | 測定装置を備えたタイヤ |
US7203579B2 (en) | 2001-12-21 | 2007-04-10 | Kabushiki Kaisha Bridgestone | Method and apparatus for estimating road surface state and tire running state, ABS and vehicle control using the same |
WO2003053747A1 (fr) * | 2001-12-21 | 2003-07-03 | Kabushiki Kaisha Bridgestone | Procede et appareil pour l'estimation de l'etat de la surface d'une route et de l'etat de fonctionnement de pneumatiques, abs et commande de vehicule dans lesquels ils sont utilises |
US7313952B2 (en) | 2002-03-28 | 2008-01-01 | Pirelli Pneumatici S.P.A. | Method and system for monitoring instantaneous behavior of a tire in a rolling condition |
US7451024B2 (en) | 2002-03-28 | 2008-11-11 | Pirelli Pneumatici S.P.A. | Tyre, wheel, method and system for monitoring the tyre, and method for controlling a vehicle |
US8019502B2 (en) | 2002-03-28 | 2011-09-13 | Pirelli Pneumatici S.P.A. | Tyre and system for monitoring the tyre during the running of a vehicle |
DE10329700B4 (de) * | 2003-07-02 | 2016-12-15 | Continental Automotive Gmbh | Verfahren und Vorrichtung zur Ermittlung des Reifenfülldrucks und der Radlast eines Fahrzeugreifens |
US9046457B2 (en) | 2005-06-17 | 2015-06-02 | Kabushiki Kaisha Bridgestone | Road surface condition estimating method, road surface condition estimating tire, road surface condition estimating apparatus, and vehicle control apparatus |
Also Published As
Publication number | Publication date |
---|---|
EP0988160B1 (fr) | 2002-03-06 |
JP2002511812A (ja) | 2002-04-16 |
US20030062994A1 (en) | 2003-04-03 |
DE69804098D1 (de) | 2002-04-11 |
EP0988160A1 (fr) | 2000-03-29 |
DE69804098T2 (de) | 2002-10-31 |
US6538566B1 (en) | 2003-03-25 |
FR2764241B1 (fr) | 1999-08-20 |
FR2764241A1 (fr) | 1998-12-11 |
AU7775298A (en) | 1998-12-30 |
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