EP3234541A1 - Système d'évaluation de l'état d'un pneumatique - Google Patents
Système d'évaluation de l'état d'un pneumatiqueInfo
- Publication number
- EP3234541A1 EP3234541A1 EP15808597.7A EP15808597A EP3234541A1 EP 3234541 A1 EP3234541 A1 EP 3234541A1 EP 15808597 A EP15808597 A EP 15808597A EP 3234541 A1 EP3234541 A1 EP 3234541A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tire
- detection device
- housing
- detecting
- evaluation system
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/02—Tyres
- G01M17/021—Tyre supporting devices, e.g. chucks
-
- 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
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/24—Wear-indicating arrangements
- B60C11/246—Tread wear monitoring systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B13/00—Measuring arrangements characterised by the use of fluids
- G01B13/24—Measuring arrangements characterised by the use of fluids for measuring the deformation in a solid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
Definitions
- the present invention relates to a system for evaluating the state of a tire, and more particularly the wear state of a tire.
- the tread of a tire is provided with a sculpture including elements of sculpture or elementary blocks delimited by various main grooves, longitudinal, transverse or oblique, the elementary blocks may further comprise various incisions or slices finer.
- the grooves are channels for evacuating water during a wet run and define the leading edges of the carving elements.
- the tread When a tire is new, the tread is at its maximum height. This initial height may vary depending on the type of tire considered and the purpose for which it is intended; for example, "winter" tires generally have a greater tread depth than "summer” tires.
- the height of the elementary blocks of the sculpture decreases and the stiffness of these elementary blocks increases. Increasing the stiffness of the elementary blocks of sculpture results in a decrease in certain performances of the tire, such as wet grip.
- the water evacuation capacities decrease sharply when the depth of the channels of the sculptures decreases.
- US document 2009/0000370 discloses a measuring system comprising a running wheel intended to accommodate the passage of a vehicle.
- the system includes a power source that transmits a wireless signal to the tire, and a sensor that detects a signal transmitted back by the tire. From this feedback signal, a control unit determines the depth of the tread of the tire.
- this system requires a constant supply of the various elements, and thus offers only a small autonomy.
- the present invention therefore aims to overcome this disadvantage, by proposing an autonomous system for evaluating the state of a tire.
- the invention proposes a system for evaluating the state of a tire, the system comprising a first housing placed on the ground and a device for detecting the wear of a tire during a passage. tire on said first housing, said system further comprising
- the wear detection device comprises, in an advantageous embodiment, a housing with an application face intended to be in contact with the surface of the tire and a sensor placed in the housing capable of measuring the distance that separates said sensor of the metal reinforcements constituting the tire.
- the sensor comprises, for example, a static or alternating magnetic field source and an adjacent sensitive element, the source being a coil or a permanent magnet and the sensitive element a sensor whose output signal may, for example, be a function of the level of the local magnetic induction field.
- the sensing element is positioned so that the intensity of the magnetic field varies as the distance d decreases.
- the sensitive element is selected from the group of Hall effect or magnetoresistive sensors.
- the sensitive element is a coil.
- the senor capable of measuring the distance separating said sensor from the metal reinforcements constituting the tire is an eddy current sensor.
- the detection device advantageously comprises several sensors of the same type, installed in the housing on the ground.
- the system is such that the distance, projected on a surface parallel to the taxiing ground, between the first presence detection device or an access ramp to the housing and the wear detection device. is greater than the distance traveled by a vehicle at a predetermined speed in a time corresponding to the time required for activation of the wear detection device.
- the time required for the activation of the wear detection device is, for example, of the order of ten milliseconds.
- the predetermined speed is, for example, a maximum speed recommended for the use of the evaluation system, or a speed beyond which the correct operation of the system is not guaranteed for a user.
- the first device for detecting the presence of a tire comprises at least one sensor responsive to the variation in intensity and / or orientation of the earth's magnetic field.
- the approach of a vehicle or tire causes local variations in the Earth's magnetic field, which can be detected and used as an indication of the presence of a tire on the system.
- a magnetometer preferably selected for its low power consumption in standby and in operation, preferably less than 600 ⁇ .
- the first device for detecting the presence of a tire comprises at least one extensometer, for measuring the deformations induced on the housing during the presence of a vehicle.
- extensometer for measuring the deformations induced on the housing during the presence of a vehicle.
- extensometer with resistant son also called strain gauges or strain gauges will be used in the following description.
- strain gauges will be installed in series and / or in parallel, and connected to a central electronic evaluation system. They are advantageously installed in cavities arranged in the housing, for example at access ramps to the housing.
- the first device for detecting the presence of a tire comprises at least one sealed cavity accommodating a fluid and a pressure sensor installed so as to measure the pressure of the fluid in this cavity.
- a pressure sensor installed so as to measure the pressure of the fluid in this cavity.
- several cavities are arranged in an access ramp of the housing. These cavities are filled with a fluid, for example air or a liquid, at a pressure close to atmospheric pressure.
- the arrival of a tire on the housing causes an increase in pressure of the fluid in the cavity, detected by the pressure sensor, and which can be used as an indicator of the presence of a vehicle on the housing.
- a mechanical contact detector implementing a flexible blade. This contact detector is positioned at one end of the cavity, and subjected to a movement of the fluid during an increase in pressure in the cavity. This detector closes electrically when a vehicle is present on the housing.
- the first presence detection device comprises at least one accelerometer, preferably chosen to be sensitive to vibrations caused by the arrival of a tire on the housing.
- This accelerometer will advantageously be chosen for its low consumption in standby and in operation, preferably less than 600 ⁇ .
- the presence detection device comprises a shock sensitive sensor.
- the presence detection device is directly attached to the housing, for example in a cavity formed in the housing.
- the detection device can be positioned parallel to the ground hosting the housing, or in another direction.
- the device is protected from external aggressions, for example rain.
- the device may be embedded in the material forming the housing, or in an additional protective resin.
- the system comprises a second device for detecting the presence of a tire, similar to the first presence detection device.
- this device can be used to detect the end of the passage of a vehicle on the housing, and thus be used as a means of extinguishing the wear detection device.
- the evaluation system can be used regardless of the direction of approach of a vehicle.
- the first chronologically activated presence detection device is used to activate the wear detection device.
- the presence detection device chronologically activated the second is used to turn off the wear detection device.
- the system comprises means for detecting that the output value of the wear detection device becomes lower and / or higher than a predetermined threshold, and to consequently control the extinguishing of the device. detection.
- system further comprises means for adjusting the sensitivity of the device for detecting the presence of the tire.
- the sensitivity setting allows for example to choose to detect only vehicles beyond a certain weight. This allows in particular to activate the system when passing a truck whose assessment is desired, and not to activate the system during the inadvertent passage of a light vehicle. Depending on the detection devices used, this adjustment of the sensitivity can be performed by adjusting the stiffness of the material constituting the housing, and / or the thickness of the housing at the level of the detection device.
- the sensitivity adjustment means are, for example, electronic means, as subsequently described with the aid of the figures.
- the electronic means for activating the wear detection device comprise means for modifying a mode of operation of the various microcontrollers of the wear detection device.
- the electronic means for activating the wear detection device comprise means for acting on the supply of the wear detection device. More precisely, the electronic means can act on the power supply of the motherboard of the wear detection device, but also on the power supply of the RFID reading functions of the detection device, or finally on the transmission functionalities. of information by Hertzian way of said device.
- FIG. 1 is a perspective view of a vehicle having a tire passing over a housing belonging to a system according to the invention
- FIGS. 2a, 2b and 2c; 3a, 3b and 3c; 4a, 4b and 4c respectively show three embodiments of a system according to the invention, implementing different presence detection devices. DESCRIPTION OF THE BEST MODE FOR CARRYING OUT THE INVENTION
- Figure 1 shows a vehicle 5 whose tire 8 rolls on a housing 6 belonging to an evaluation system according to the invention.
- the figure shows a passenger vehicle but such a system is also usable for any other vehicle, such as a truck or a bus.
- the detection of the state of wear of the tire 8 is made when the tire rolls over the housing 6 without it being necessary to stop the vehicle or disassemble the tire of the vehicle.
- the housing is in the form of a retarder for land vehicles made of a material capable of withstanding the passage of multiple tires without degrading.
- the material is, for example, a vinylester resin composite, reinforcing fiberglass, and various additives well known to those skilled in the art.
- the housing can take any other form of portable object having a flat bottom surface for positioning on a taxiing floor.
- the floor on which the housing is placed is prepared with a suitable concrete and a fine patching, to obtain a good flatness.
- Figures 2a, 2b and 2c show an exemplary embodiment of the system according to the invention consists of a housing 10 containing the wear measuring device and two devices for detecting the presence of a tire, and a example of signals picked up by the presence detection devices of the tire contained in said housing.
- the presence detection device of the tire is sensitive to the deformation of the casing during the passage of a tire 20.
- the casing consists of two access ramps 15 and a measuring zone of horizontal wear 16.
- the housing comprises, in each ramp 15, a device for detecting the presence of a tire comprising a cavity 120 and a sensor 130.
- the cavity 120 arranged in the access ramp 15, is filled with a fluid, by example of air or a liquid, at a pressure close to atmospheric pressure.
- Each of the cavities 120 has an elongated shape, and is positioned in a direction orthogonal to the direction of travel of a vehicle arriving on the housing.
- the length of the cavity 120 is such that the detection of presence of the tire can be made regardless of the position of the tire on the system according to the invention.
- the cavities 120 are made to be perfectly sealed, to avoid any change in the pressure due to possible leakage of fluid.
- a sensor 130 sensitive to the increase of the pressure in the cavity 120.
- the deformation of the housing structure 10 at the level of the cavity 120, causes an increase in the pressure in said cavity.
- This increase in pressure is then detected by the sensor 130 whose output signal can be used to determine the presence of a vehicle on the housing.
- the sensor 130 is, for example, a pressure sensor whose bandwidth and sensitivity are advantageously chosen to allow the detection of a tire. It can also be a mechanical contact detector with a flexible blade.
- each access ramp 15 is provided with a presence detection device. This has the advantage of making the system insensitive to the running direction of the vehicle, since it can arrive on the system by one or other of the ramps 15.
- the sensors 130 are connected to an electronic unit 110, which is used to perform the evaluation of the wear of the tire by wear sensors 100.
- the output signal 3 of a pressure sensor 130, shown 2c, is also used by the unit 110.
- the electronic 110 may contain a threshold electronics that acts to wake up the measuring device of the wear when a vehicle is detected.
- the level of the threshold S is adjusted to avoid waking the device if a low pressure is generated, for example by the passage of a pedestrian on the ramp 15 . It is also possible to adjust the sensitivity of the system by varying the stiffness of the material constituting the housing 10, or the thickness e of the structure at the cavity 120 under the access ramp 15.
- the pressure sensor 130 may be replaced by a mechanical contact detector, implementing a flexible blade.
- the distance d between the presence detection device, here in the form of cavity 120, and the wear detection device, here in the form of sensors 100, must be sufficient for the electronic unit 110 can be activated by the sensors 130 before the tread of the tire reaches the sensors 100.
- This distance d is calculated as a function of the maximum speed at which the vehicles will pass on the system, as a function of the response time of the tire presence detection device, and taking into account the time required to wake up and / or at the start of the various electronic functions of the system.
- the recommended vehicle speed for the use of an evaluation system according to the invention is fifty km / h. If the time required for the activation of the unit 110 is of the order of ten ms and the response time of the presence detection device is also of the order of ten ms, this means that the distance d must be greater than twenty-eight centimeters to ensure correct wear detection. Preferably, the distance d is less than 1 meter, to ensure the smallest possible space and cost of the system.
- the electronic unit 110 comprises several elements that are useful for the operation of the wear detection device, in particular:
- An RFID reader that enables the identification of the tire or the vehicle, by means of an antenna enabling the reading of an RFID chip integrated in the tire or positioned on the vehicle;
- Figures 3a, 3b and 3c show another embodiment of the system according to the invention in which the tire presence detection device is realized at means of stress gauges 230 and is therefore sensitive to the deformation of the structure of the housing 11 of the wear measuring system.
- each access ramp 16 two strain gauges 230.
- Each of these gauges is installed in a cavity 220 formed in the lower surface of the access ramp. More specifically, each of these gauges is integrally fixed to the bottom of the cavity 220, the bottom corresponding in this case to the plane farthest from the ground.
- the two gauges located under the same access ramp are, in one example, connected in series and connected to the central electronics 111 of the system according to the invention.
- FIG. 3c shows an example of configuration of the strain gauges implemented in the electronics 111.
- a Wheatstone bridge circuit is used to convert the stress measured by one or more gauges into a voltage V.
- This bridge consists of a gauge 230, assimilated to a variable resistor, and three fixed resistors R1, R2 and R3.
- the strain gauge results in a variation of the electrical resistance of the gauge, which itself results in a variation of the voltage V. It is then possible to detect a presence of a vehicle on the housing by detecting a variation of the voltage V.
- the fixed resistors R1, R2 and R3 are chosen to ensure a zero voltage V in the absence of stress.
- the assembly illustrated in Figure 3c is not described as a limitation. Indeed, one could replace one of the fixed resistors by another strain gauge.
- the gauge 230 could also be replaced by several gauges connected in series. Similarly, one could use a Wheatstone bridge arrangement for each of the access ramps, or use a common assembly for the entire system.
- the electronics 111 contains a threshold electronics for example to avoid waking the system if a low stress is measured by any one of the gauges, for example when a person walks on the ramp 16.
- the distance d1 separating the strain gauges 230 constituting the tire presence detection device from the wear sensor line 100 must be sufficient for the electronic unit 111 to be activated by the gauges 230 before the tread of the tire reaches the sensors 100.
- This distance dl is calculated according to the maximum speed at which the vehicles will pass on the system, and taking into account the time required to wake up and / or start the various functions electronic system.
- FIGS. 4a and 4b show an embodiment in which the tire detection device is sensitive to a shock wave caused by the arrival of a tire 20 on the wear detection device.
- the housing of the wear measuring system 12 is in the form of a retarder for land vehicles made of a material capable of withstanding the passage of multiple tires without degrading.
- This housing 12 consists of two access ramps 17 and a horizontal wear measurement zone 16. Several wear measurement sensors 100 are installed inside this housing.
- the box further comprises an electronic card 112 which allows the management of the measurement process, the identification of the vehicle and the tires by RFID reading and the transmission of all the information by radio frequency up to a database remote.
- This electronic card is, for example, activated by means of the sensor 320, when a tire arrives on the system.
- the sensor 320 may be electrically connected to the electronic card 112, but fixed on the structure of the housing 12.
- this sensor is an accelerometer preferably chosen to be sensitive to vibrations caused by the arrival of a tire 20 on any of the access ramps. preferentially, using an accelerometer selected for its low standby power consumption and operation which should be advantageously less than 600 ⁇ .
- the senor may be a shock sensitive sensor, for example a normally closed sensor which becomes open when subjected to vibration.
- a shock sensitive sensor for example a normally closed sensor which becomes open when subjected to vibration.
- the senor 320 may also be a sensor sensitive to local variations in orientation or intensity of the Earth's magnetic field caused by the approach of a vehicle or a tire.
- This sensor may for example be a magnetometer.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Tires In General (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1462594A FR3030744A1 (fr) | 2014-12-17 | 2014-12-17 | Systeme d'evaluation de l'etat d'un pneumatique |
PCT/EP2015/079465 WO2016096667A1 (fr) | 2014-12-17 | 2015-12-11 | Système d'évaluation de l'état d'un pneumatique |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3234541A1 true EP3234541A1 (fr) | 2017-10-25 |
Family
ID=52988185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15808597.7A Ceased EP3234541A1 (fr) | 2014-12-17 | 2015-12-11 | Système d'évaluation de l'état d'un pneumatique |
Country Status (4)
Country | Link |
---|---|
US (1) | US10712238B2 (fr) |
EP (1) | EP3234541A1 (fr) |
FR (1) | FR3030744A1 (fr) |
WO (1) | WO2016096667A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3020680B1 (fr) | 2014-05-02 | 2017-11-24 | Michelin & Cie | Systeme d'evaluation de l'etat d'un pneumatique |
FR3030374B1 (fr) | 2014-12-17 | 2017-01-13 | Michelin & Cie | Procede de detection et d'alerte de l'etat de sous-gonflage d'un pneumatique |
FR3039459B1 (fr) | 2015-07-30 | 2017-08-11 | Michelin & Cie | Systeme d'evaluation de l'etat d'un pneumatique |
FR3067137A1 (fr) | 2017-06-02 | 2018-12-07 | Compagnie Generale Des Etablissements Michelin | Procede de fourniture d'un service lie a l'etat et/ou au comportement d'un vehicule et/ou d'un pneumatique |
FR3079568B1 (fr) * | 2018-03-30 | 2020-04-24 | Compagnie Generale Des Etablissements Michelin | Systeme de fixation pour boitier de mesure de caracteristiques de pneumatique |
US11835421B2 (en) | 2019-10-31 | 2023-12-05 | Keith George Ferry | Sensor assemblies and systems for monitoring a dynamic object |
CN110887552A (zh) * | 2019-11-22 | 2020-03-17 | 郭鸿英 | 一种离散式车辆轮胎承重检测方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015166074A1 (fr) * | 2014-05-02 | 2015-11-05 | Compagnie Generale Des Etablissements Michelin | Système d'évaluation de l'état d'un pneumatique |
Family Cites Families (30)
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US3183481A (en) * | 1962-11-14 | 1965-05-11 | Verda Allen | Automatic tire tread gauge |
DE1809459A1 (de) * | 1968-11-18 | 1970-06-11 | Dr Ekkehard Fuchs | Verfahren und Anordnung zur Messung der Profiltiefe von Kraftfahrzeugreifen und zur Auswertung der Messergebnisse |
FR2201511B3 (fr) | 1972-09-22 | 1975-10-17 | Benac Louis | |
FR2665255A1 (fr) * | 1990-07-24 | 1992-01-31 | Inrets | Dispositif pour evaluer le degre d'usure des pneumatiques de vehicules. |
US5445020A (en) | 1991-11-29 | 1995-08-29 | Exxon Research And Engineering Company | Tire inflation sensor |
US5554907A (en) * | 1992-05-08 | 1996-09-10 | Mitron Systems Corporation | Vehicle speed measurement apparatus |
US6763288B2 (en) * | 1999-07-30 | 2004-07-13 | Pirelli Pneumatici S.P.A. | Method and system for monitoring and/or controlling behavior of a vehicle by measuring deformations of its tires |
US6749587B2 (en) | 2001-02-22 | 2004-06-15 | Insulet Corporation | Modular infusion device and method |
US6867690B2 (en) * | 2001-02-27 | 2005-03-15 | Key Safety Systems, Inc. | Active magnetostrictive sensor for automotive horn or occupant weight sensor |
DE10144877A1 (de) * | 2001-09-12 | 2003-04-03 | Bosch Gmbh Robert | Sensor zur Sitzbelegungserkennung |
US7089790B2 (en) | 2004-10-18 | 2006-08-15 | Silverbrook Research Pty Ltd | Pressure sensor with laminated membrane |
WO2006098714A1 (fr) | 2005-03-11 | 2006-09-21 | Societe De Technologie Michelin | Signature souple pour la condition de pneu |
WO2006129712A1 (fr) * | 2005-06-01 | 2006-12-07 | Citizen Holdings Co., Ltd. | Capteur de grandeur physique |
US7481400B2 (en) * | 2005-07-01 | 2009-01-27 | Portec, Rail Products Ltd. | Railway wheel sensor |
JP4887373B2 (ja) | 2005-11-22 | 2012-02-29 | シェーファー・フランク・ハー | タイヤの形状深さおよび形状の種類ならびに走行時の車両の速度および地上高の検出装置 |
JP5114911B2 (ja) | 2006-09-29 | 2013-01-09 | 富士通株式会社 | バッテリパック及び電子機器 |
US20100139383A1 (en) * | 2006-11-17 | 2010-06-10 | Treadcheck Limited | Apparatus and method for monitoring tyre wear |
US7578180B2 (en) * | 2007-06-29 | 2009-08-25 | The Goodyear Tire & Rubber Company | Tread depth sensing device and method for measuring same |
US8006559B2 (en) * | 2007-08-20 | 2011-08-30 | International Electronic Machines Corporation | Wayside rolling stock inspection |
KR20130067452A (ko) * | 2011-12-14 | 2013-06-24 | 한국전자통신연구원 | 자기센서를 이용한 차량 검지 장치 및 방법 |
GB201305800D0 (en) * | 2013-03-28 | 2013-05-15 | Univ Manchester | Tyre assessment |
FR3007517B1 (fr) | 2013-06-20 | 2016-08-19 | Michelin & Cie | Systeme de mesure de l'epaisseur d'une couche de gomme d'un pneumatique |
FR3009076B1 (fr) | 2013-07-26 | 2017-03-31 | Michelin & Cie | Systeme de mesure de l'epaisseur d'une couche de gomme d'un pneumatique |
FR3009075B1 (fr) | 2013-07-26 | 2016-09-09 | Michelin & Cie | Systeme de mesure de l'epaisseur d'une couche de gomme d'un pneumatique |
DE202014001427U1 (de) | 2013-11-09 | 2014-03-17 | Konrad Stauber | Früh- Warnsystem für Falschfahrer und Gegenverkehr |
FR3029878B1 (fr) | 2014-12-16 | 2017-01-13 | Michelin & Cie | Procede de prediction de la vitesse d'un conducteur au volant d'un vehicule |
FR3030717B1 (fr) | 2014-12-17 | 2017-01-13 | Michelin & Cie | Procede de mesure de l'epaisseur d'une couche de materiau caoutchouteux |
FR3030743B1 (fr) | 2014-12-17 | 2017-01-13 | Michelin & Cie | Systeme d'evaluation de l'etat d'un pneumatique muni d'un dispositif de detection du sens de roulage |
FR3030759B1 (fr) | 2014-12-17 | 2017-01-13 | Michelin & Cie | Systeme d'evaluation de la vitesse d'un pneumatique |
FR3030374B1 (fr) | 2014-12-17 | 2017-01-13 | Michelin & Cie | Procede de detection et d'alerte de l'etat de sous-gonflage d'un pneumatique |
-
2014
- 2014-12-17 FR FR1462594A patent/FR3030744A1/fr not_active Withdrawn
-
2015
- 2015-12-11 WO PCT/EP2015/079465 patent/WO2016096667A1/fr active Application Filing
- 2015-12-11 US US15/535,251 patent/US10712238B2/en active Active
- 2015-12-11 EP EP15808597.7A patent/EP3234541A1/fr not_active Ceased
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015166074A1 (fr) * | 2014-05-02 | 2015-11-05 | Compagnie Generale Des Etablissements Michelin | Système d'évaluation de l'état d'un pneumatique |
Also Published As
Publication number | Publication date |
---|---|
FR3030744A1 (fr) | 2016-06-24 |
US20170350792A1 (en) | 2017-12-07 |
WO2016096667A1 (fr) | 2016-06-23 |
US10712238B2 (en) | 2020-07-14 |
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