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WO2006054976A1 - Determination de caracteristiques de surface de roulement par analyse de formes d’ondes de detection - Google Patents

Determination de caracteristiques de surface de roulement par analyse de formes d’ondes de detection Download PDF

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Publication number
WO2006054976A1
WO2006054976A1 PCT/US2004/038097 US2004038097W WO2006054976A1 WO 2006054976 A1 WO2006054976 A1 WO 2006054976A1 US 2004038097 W US2004038097 W US 2004038097W WO 2006054976 A1 WO2006054976 A1 WO 2006054976A1
Authority
WO
WIPO (PCT)
Prior art keywords
tire
analyzing
sensors
associating
tires
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
Application number
PCT/US2004/038097
Other languages
English (en)
Inventor
Patrick Allan Tyndall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Michelin Recherche et Technique SA Switzerland
Societe de Technologie Michelin SAS
Original Assignee
Michelin Recherche et Technique SA Switzerland
Societe de Technologie Michelin SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Michelin Recherche et Technique SA Switzerland, Societe de Technologie Michelin SAS filed Critical Michelin Recherche et Technique SA Switzerland
Priority to CNA2004800444064A priority Critical patent/CN101057122A/zh
Priority to EP04822624A priority patent/EP1815212A1/fr
Priority to PCT/US2004/038097 priority patent/WO2006054976A1/fr
Publication of WO2006054976A1 publication Critical patent/WO2006054976A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/172—Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2210/00—Detection or estimation of road or environment conditions; Detection or estimation of road shapes
    • B60T2210/10—Detection or estimation of road conditions
    • B60T2210/12—Friction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2210/00—Detection or estimation of road or environment conditions; Detection or estimation of road shapes
    • B60T2210/10—Detection or estimation of road conditions
    • B60T2210/13—Aquaplaning, hydroplaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2240/00—Monitoring, detecting wheel/tyre behaviour; counteracting thereof
    • B60T2240/03—Tyre sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/02—Measuring coefficient of friction between materials

Definitions

  • the present subject matter concerns travel or road surface condition-monitoring systems for use with vehicle tires. More particularly, the present subject matter concerns enhancements to such systems; especially methodology for identifying selected travel or road surface related conditions based, in part, on the nature of waveforms generated by associated tire sensors.
  • Tire electronics may include sensors and other components for relaying tire identification parameters and also for obtaining information regarding various physical parameters of a tire, such as temperature, pressure, tread wear, number of tire revolutions, vehicle speed, etc. Such performance information may become useful in tire monitoring and warning systems, and may even potentially be employed with feedback systems to regulate proper tire parameters or vehicle systems operation and/or performance.
  • RFID Radio frequency identification
  • Tire sensors can determine the distance each tire in a vehicle has traveled and thus aid in maintenance planning for such commercial systems.
  • Example of such include tire pressure-monitoring applications wherein it may also be important or critical to track other tire or vehicle related parameters such as tire temperature, rotational speed, distance traveled, distances travel at particular speeds, and other parameters.
  • data may be collected and reported on a real time basis.
  • real time reporting to a vehicle operator of a low- pressure condition may become of critical importance if the low-pressure condition becomes suddenly extreme upon occurrence of, for example, a "blow-out" which may affect directional control or stability of the vehicle especially if the vehicle is being operated at highway speeds.
  • tire sensors may be actively employed in the real time control of certain functions of the vehicle. Examples of these functions may include anti-lock or anti ⁇ skid braking systems. In applying such tire sensor signals to real time control of vehicle function as well as other signaling aspects relating to vehicle operation, identification of varying travel or road surface conditions may become advantageous.
  • a waveform generated by a tire sensor is examined and analyzed to determine a number of selected travel or road surface characteristics.
  • EKG electro-cardiogram
  • one or more tire- associated sensors may be mounted in or on one or more tires thereby providing one or more signals that may be analyzed to determine a plurality of travel or road surface related characteristics.
  • Non-exhaustive examples of such include but are not limited to, sensors mounted on various inside surfaces of one or more tires associated with a vehicle including at the summit, i.e., on the inside liner in an area opposite the treads, on the inside of the sidewall of the tire, on the outside surface of the sidewall, and/or integrated into the structure of the tire itself.
  • a piezoelectric sensor also referred to herein as a piezoelectric patch
  • a piezoelectric patch may be secured in or on a vehicle tire. It has been demonstrated that piezoelectric tire sensors are extremely sensitive devices and will respond to virtually any force applied anywhere on a tire with which such a sensor may be associated. Selective analysis of the signals obtained from such sensors should, therefore, be able to provide a wealth of information.
  • piezoelectric sensors include the possibility of providing a dual function sensor in that the sensor may also be employed as a power source for operating various components that may be associated with the sensor.
  • Such components may include, but are not limited to, elements such as a microprocessor, memory elements, data transmission and reception circuitry, and other elements or components as may be desired for any particular situation or installation.
  • Figure 1 diagrammatically shows a tire profile that has been exaggerated in part to illustrate portions of a tire during rolling contact with a surface
  • Figure 2 diagrammatically illustrates a representative signal produced by a tire sensor mounted in association with the tire of Figure 1 as it rolls in and out of contact with a surface;
  • Figure 3 diagrammatically illustrates the combination of a tire and alternative locations for tire sensors.
  • the present subject matter is particularly concerned with methodologies for deriving travel or road surface characteristic related data from sensors associated with tires. More particularly, the present subject matter recognizes that significant travel or road surface characteristic related data can be derived from an analysis of the waveforms generated by various tire sensors during the operation of vehicles to which such tires may be mounted as the tires flex under pressures applied to the tires during operation or movement as such tire encounters various travel or road surface conditions.
  • such flexing of the tires during operation produces, via associated sensors, a "signature" waveform that, when analyzed, may be used to reveal significant data regarding current tire and travel or road surface conditions.
  • a doctor can analyze a patient's electro-cardiogram and discern many different conditions of the human heart as revealed in the heartbeat.
  • the signature of strain on the inside of a tire may be made use of as a rich source of information about the state of the tire as well as the surface over which the tire has come into contact.
  • Figure 1 diagrammatically illustrates a tire 10 mounted for rotation about an axis 20, in contact with a surface 30 such that the tire and surface contact produces a contact patch delineated by bracket 40.
  • the tire flex signature analysis of the present technology takes advantage of the fact that there are fundamentally four zones of different curvature within an inflated, loaded tire.
  • a major portion of the tire is represented by area 2 and corresponds to that portion of the tire 10 that is neither currently in contact with the surface 30 nor being significantly flexed by way of being in close proximity to area 6.
  • Area 6 corresponds to that portion of the tire that is in full contact with surface 30.
  • Tire portions 4 and 8 correspond to transitional areas that, at vehicle stand still or during uniform motion, are substantially identical, but which become different in shape and extent under driving or braking conditions.
  • transition zone 8 assuming the direction of tire rotation is that shown by arrow 26 may be considered an "entry" zone while transition zone 4 may be considered an "exit” zone and zone 6 may be considered a "contact" zone.
  • Fig. 2 diagrammatically illustrated therein is a representation of a waveform or tire flex signature produced by an exemplary tire-associated sensor in accordance with the present technology.
  • the tire-associated sensor may be a piezoelectric sensor that may be self-powered or separately powered or may combine elements of both power-supplying forms to operate the sensor.
  • the waveform generating sensor may correspond to other available or yet to be developed sensors.
  • tire flex signature waveform analysis may be applied to a waveform generated by any suitable sensor and that significant tire and travel or road surface condition related data may be determined there from without reliance thereon, necessarily, of any one particular sensor type.
  • a principle concept of the present technology is to examine waveforms representing strain applied to a tire not only from the surface itself but also based on anomalies associated with the surface. By actually measuring the curvature in each of the four zones previously mentioned, as well as the size or extent of the zones based on the time signature, it is possible to determine many facts about the condition and use of a tire. Moreover, however, by analyzing waveforms generated during the actual contact period of the tire as represent by zone 6 and contact patch 40, various travel or road surface conditions may be identified.
  • piezoelectric tire sensors are extremely sensitive devices and will respond to virtually any force applied anywhere on a tire with which such a sensor may be associated.
  • piezoelectric sensors is advantageous to the present technology, such use is not a limitation of the present subject matter.
  • an exemplary waveform illustrates a signal produced by a sensor associated with a tire under a condition of uniform motion.
  • a perturbation is produced in the waveform as the tire enters and leaves each of the previously identified four zones.
  • wave segment 22, and its repeating companion segment 24 corresponds to a signal produced by the portion of the tire that is currently out of contact with surface 30.
  • Positive going pulse 84 represents the beginning of the entry zone 8, i.e. the transition between non-contacting tire segment 2 and the beginning of the fully contacting segment 6.
  • Negative going pulse 82 represents the end of the entry zone 8 and the beginning of the contact zone 6.
  • Waveform segment 62 corresponds to contact zone 6.
  • Positive pulse 44 corresponds to the end of the contact zone 6 and the beginning of the exit zone 4.
  • Negative going pulse 42 corresponds to the end of exit zone 4 and the beginning of the non-contact zone 2.
  • the pulses representing the beginning and end of the respective entry zone 8 and exit zone 4 are substantially identical. Moreover, the spacing between the beginning and ending pulses of these zones are substantially identical. Analysis of the amplitude and time difference between the various pulses can result in determining such information as tire rotational speed, tire loading, pressure, over and under pressure conditions and other parameters as outlined previously. Under conditions of acceleration or deceleration, the previously substantially identical waveforms produced as the tire transitions through zones 4 and 8 will change as a result of a "damming up" or bulging effect due to the combined effects of any acceleration or deceleration and tire traction with the surface.
  • waveform segment 62 represents signals generated as a result of various travel or road surface anomalies like those previously mentioned.
  • Various signal analysis methodologies including analog and/or digital techniques may be used to examine, for example, a high frequency component within the waveform segment 62 that may be indicative of the presence of a rough surface as exhibited by the presence of gravel or other particulate materials on the surface.
  • a tire running in relatively deep water will behave differently at the edges of the contact patch 6. Such condition could be detected by analyzing the shape of the waveform corresponding to that generated at such contact patch edges.
  • sensors may be mounted in, on or within a tire in accordance with the present technology.
  • one or more sensors may be associated with tire 10 by mounting such sensors on the outside of the side wall as at 90, on the crown of the tire as at 92, on the inside of the sidewall as at 94, or physically embedded within the tire structure as illustrated by the dotted line rectangle at 96. Any, some or all of these locations might be used for sensor location in any one tire.
  • plural sensors may be arranged such that both linear and lateral forces may be more easily detected to obtain the widest possible range of discernable data.
  • one or more tire sensors may be associated with more than one tire associated with any one vehicle. There may be additional useful information obtained by comparing signals generated from different sensors on different tires or even different sensors on the same tire. For example, if signals from one tire indicated that such tire was traversing an icy patch while another tire on the same vehicle was not experiencing the same icing condition, signals might be generated to instruct vehicle traction control equipment to take such condition into consideration. Similarly differing control signals might be generated if tire signal analysis showed that one tire was experiencing some other condition from other tires on a vehicle, for example, being on a gravel surface or in water, mud or snow. The recognition of differences among travel or road surface conditions experienced by various tires on a single vehicle may prove to be significant to maintaining stable operation of such vehicle.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

Cette invention concerne un procédé pour obtenir des données relatives à diverses conditions précises en matière de surface de roulement de pneus. Un ou plusieurs capteurs sont montés pour contrôler le fonctionnement d’un ou de plusieurs pneus. Des formes d’ondes de signal générées par l’usage du ou des capteurs sont analysées d’une manière similaire à l’analyse d’un électrocardiogramme provenant d’un patient humain afin de déterminer certaines caractéristiques de la surface de roulement ou de contact que les pneus contrôlés empruntent. Ce procédé peut impliquer l’analyse d’une seule forme d’onde ou la comparaison de formes d’ondes appariées émises par les capteurs associés à un seul pneu ou à un train de pneus.
PCT/US2004/038097 2004-11-15 2004-11-15 Determination de caracteristiques de surface de roulement par analyse de formes d’ondes de detection Ceased WO2006054976A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CNA2004800444064A CN101057122A (zh) 2004-11-15 2004-11-15 通过分析传感器波形确定行驶路面特征
EP04822624A EP1815212A1 (fr) 2004-11-15 2004-11-15 Determination de caracteristiques de surface de roulement par analyse de formes d ondes de detection
PCT/US2004/038097 WO2006054976A1 (fr) 2004-11-15 2004-11-15 Determination de caracteristiques de surface de roulement par analyse de formes d’ondes de detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2004/038097 WO2006054976A1 (fr) 2004-11-15 2004-11-15 Determination de caracteristiques de surface de roulement par analyse de formes d’ondes de detection

Publications (1)

Publication Number Publication Date
WO2006054976A1 true WO2006054976A1 (fr) 2006-05-26

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PCT/US2004/038097 Ceased WO2006054976A1 (fr) 2004-11-15 2004-11-15 Determination de caracteristiques de surface de roulement par analyse de formes d’ondes de detection

Country Status (3)

Country Link
EP (1) EP1815212A1 (fr)
CN (1) CN101057122A (fr)
WO (1) WO2006054976A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120143489A1 (en) * 2010-10-18 2012-06-07 Telenav, Inc. Navigation system with road object detection mechanism and method of operation thereof
EP2573594A4 (fr) * 2010-05-19 2016-01-13 Bridgestone Corp Procédé d'estimation de l'état de la surface d'une route
EP3068640A4 (fr) * 2013-11-15 2017-07-12 Compagnie Générale des Etablissements Michelin Mesures de surface de contact avec le sol durant des événements d'aquaplanage
GB2549088A (en) * 2016-03-31 2017-10-11 Continental Automotive Gmbh System and method for detecting an off-road travel surface condition for a vehicle
US10668927B2 (en) 2016-06-14 2020-06-02 Continental Automotive France Method of determining the state of a road
JPWO2023152986A1 (fr) * 2022-02-14 2023-08-17

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110092327B (zh) * 2019-04-19 2021-03-19 安徽博行机械有限公司 一种基于叉车的电子驻车制动效果评估系统
CN112303154B (zh) * 2020-10-09 2022-07-22 北京汽车股份有限公司 预防制动失效的摩擦片间隙自动补偿控制方法、系统及车辆

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020157746A1 (en) * 1999-08-10 2002-10-31 Michelin Recherche Et Technique S.A. Measurement of adherence between a vehicle wheel and the roadway
US20040003865A1 (en) * 2002-06-14 2004-01-08 Steyr-Daimler-Puch Spezialfahrzeug Ag & Co. Kg Apparatus for the automatic filling of motor vehicle tires
US20040196147A1 (en) * 2003-04-07 2004-10-07 George Albuquerque Tire Management System

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020157746A1 (en) * 1999-08-10 2002-10-31 Michelin Recherche Et Technique S.A. Measurement of adherence between a vehicle wheel and the roadway
US20040003865A1 (en) * 2002-06-14 2004-01-08 Steyr-Daimler-Puch Spezialfahrzeug Ag & Co. Kg Apparatus for the automatic filling of motor vehicle tires
US20040196147A1 (en) * 2003-04-07 2004-10-07 George Albuquerque Tire Management System

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2573594A4 (fr) * 2010-05-19 2016-01-13 Bridgestone Corp Procédé d'estimation de l'état de la surface d'une route
US20120143489A1 (en) * 2010-10-18 2012-06-07 Telenav, Inc. Navigation system with road object detection mechanism and method of operation thereof
US8818704B2 (en) * 2010-10-18 2014-08-26 Telenav, Inc. Navigation system with road object detection mechanism and method of operation thereof
EP3068640A4 (fr) * 2013-11-15 2017-07-12 Compagnie Générale des Etablissements Michelin Mesures de surface de contact avec le sol durant des événements d'aquaplanage
US9932022B2 (en) 2013-11-15 2018-04-03 Compagnie Generale Des Etablissements Michelin Contact patch measurements during hydroplaning events
GB2549088A (en) * 2016-03-31 2017-10-11 Continental Automotive Gmbh System and method for detecting an off-road travel surface condition for a vehicle
US10668927B2 (en) 2016-06-14 2020-06-02 Continental Automotive France Method of determining the state of a road
JPWO2023152986A1 (fr) * 2022-02-14 2023-08-17
WO2023152986A1 (fr) * 2022-02-14 2023-08-17 日立Astemo株式会社 Dispositif de détection de type de revetement routier
JP7765505B2 (ja) 2022-02-14 2025-11-06 Ａｓｔｅｍｏ株式会社 路面種検知装置

Also Published As

Publication number Publication date
CN101057122A (zh) 2007-10-17
EP1815212A1 (fr) 2007-08-08

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