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EP1436632A1 - Dispositif de detection combinee de l'acceleration d'essieu et de la vitesse de rotation des roues, ainsi que procede de determination de pression - Google Patents

Dispositif de detection combinee de l'acceleration d'essieu et de la vitesse de rotation des roues, ainsi que procede de determination de pression

Info

Publication number
EP1436632A1
EP1436632A1 EP02800577A EP02800577A EP1436632A1 EP 1436632 A1 EP1436632 A1 EP 1436632A1 EP 02800577 A EP02800577 A EP 02800577A EP 02800577 A EP02800577 A EP 02800577A EP 1436632 A1 EP1436632 A1 EP 1436632A1
Authority
EP
European Patent Office
Prior art keywords
wheel
tire
sensor element
acceleration sensor
magnetic
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
EP02800577A
Other languages
German (de)
English (en)
Inventor
Andreas Köbe
Peter Lohberg
Martin Griesser
Helmut Fennel
Alfons Doerr
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.)
Continental AG
Continental Teves AG and Co OHG
Original Assignee
Continental AG
Continental Teves AG and Co OHG
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 Continental AG, Continental Teves AG and Co OHG filed Critical Continental AG
Publication of EP1436632A1 publication Critical patent/EP1436632A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
    • B60G17/0165—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input to an external condition, e.g. rough road surface, side wind
    • 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
    • B60C23/061—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 by monitoring wheel speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
    • B60G17/01908—Acceleration or inclination sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
    • B60G17/01933—Velocity, e.g. relative velocity-displacement sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/10—Acceleration; Deceleration
    • B60G2400/102—Acceleration; Deceleration vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/20—Speed
    • B60G2400/206—Body oscillation speed; Body vibration frequency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/20—Speed
    • B60G2400/208—Speed of wheel rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/50—Pressure
    • B60G2400/52—Pressure in tyre
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/90—Other conditions or factors
    • B60G2400/91—Frequency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/70—Estimating or calculating vehicle parameters or state variables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/70—Estimating or calculating vehicle parameters or state variables
    • B60G2800/702—Improving accuracy of a sensor signal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/90—System Controller type
    • B60G2800/91—Suspension Control
    • B60G2800/916—Body Vibration Control

Definitions

  • the invention relates to a device according to the preamble of claim 1 and a method according to the preamble of claim 6.
  • the quality of the pressure loss detection now depends, among other things, on how precisely specific driving conditions can be identified. To improve the pressure loss detection, which therefore already records and processes vibrations of the wheel axis by means of accelerometers.
  • a wheel speed sensor is known from DE 38 09 886, which in addition to a wheel speed sensor also includes an acceleration sensor.
  • the sensor arrangements described are complex to manufacture and take up too much space.
  • wheel speed sensor modules for precise detection of the wheel speed information, high-quality wheel speed sensor modules in chip technology are also required, as described, for example, in German patent application P 44 45 120 or in DE-A-199 22 672.
  • the described wheel speed sensor modules consist of a magnetized encoder rotating with the wheel, which is scanned by an active magnetic sensor element.
  • the recorded wheel speed information is forwarded via a current interface to an integrated brake control device which is suitable for ABS, ESP and the DDS described above.
  • the object of the present invention is to determine the - preferably absolute - tire pressure by combined evaluation of wheel speed information and axle frequency analysis.
  • an integrated wheel module sensor unit is to be specified, which links the accelerometer and wheel speed sensor to one another to form a coordinated overall module.
  • the present invention provides a “wheel-independent” tire pressure display system based on the known wheel speed-based “DDS”.
  • axle frequency analysis is only carried out on a vehicle wheel, the entry of specific tire parameters is required to determine the absolute air pressure.
  • the parameters necessary for an absolute tire pressure determination can be determined directly by the combined evaluation of DDS and axle frequency data. That is, : According to the invention, absolute tire pressure values are determined without the need to install battery-operated sensor modules in the wheels.
  • the determination of the tire properties by means of acceleration sensors on the wheel axle has the advantage that only very specific own movements of the tire are transferred to the wheel axle. This filter effect simplifies the frequency analysis considerably.
  • the wheel speed sensor and the acceleration sensor are jointly, preferably combined in a common device, mechanically rigidly connected to the wheel axle.
  • the method and the device according to the invention can be used in motor vehicles, which also include commercial vehicles and passenger vehicles.
  • the device according to the invention offers the advantage, among other things, that the interface and the required power supply can be shared while at the same time being inexpensive to produce. In addition, the reliability of the overall system increased by integration in a common housing sealed against environmental influences.
  • an integrated control system can be implemented within the integrated brake control device, which performs the functions DDS, ABS, EPS, etc., which are already carried out in a manner known per se, combined with chassis control in a common electronic control device.
  • the additional axis acceleration data can be used to improve DDS.
  • the data of the DDS system and the axis frequency analysis are not directly correlated to one another.
  • the functional dependencies of the DDS and axle frequency data on speed, wheel load, cornering etc. are clearly different.
  • the associated higher information width thus also leads to an overall higher level of safety in the tire pressure control warning.
  • problematic driving conditions can be reliably identified, for example, for speed-based pressure loss detection, for example if tire wear is present or if the motor vehicle is operated on roads with excessive bumps.
  • a DDS method known per se is expanded in that the vibration behavior of the wheels is observed and stored over a longer period of time, it being possible to reduce the storage space requirement by data compression or data filtering.
  • Fig. 1 shows an example of the assembly of a device according to the invention on a vibrating element
  • Fig. 2 shows a device according to the invention.
  • a combination sensor 1 which contains a magnetic sensor element 7 and an acceleration sensor 8, is fastened mechanically rigidly to the wheel suspension 3 via a fastening element 2.
  • known micromechanical sensors can be used as the acceleration sensor 8, which are etched, for example, in a silicon substrate. When using micromechanical acceleration sensors, it is possible and preferred to integrate the acceleration sensor into the chip of the signal preprocessing. "16" denotes an encoder rotating with the wheel 4.
  • Fig. 2 also shows schematically a sensor arrangement of a magnetized, rotating with the wheel 4 Encoder 16, which is magnetically coupled to the combination sensor element 1 via an air gap.
  • the magnetic sensor element 7 detects the magnetic field of the encoder 16 via a magnetoresistive bridge circuit.
  • the electrical signals of the magnetic sensor element 7 are fed to an electronic processing circuit in a separately packaged chip element 6.
  • the conditioning circuit is additionally supplied with electrical signals from an acceleration sensor element 8.
  • the sensor signals processed by the conditioning circuit are then fed to an electronic brake control unit (ECU) 13 via electrical lines 17.
  • ECU electronic brake control unit
  • each motor vehicle wheel 4 is equipped with a sensor 1 according to FIG. 2a.
  • the signal lines of the further sensor elements, which are led to the control unit 13, are not shown.
  • the interface between sensor element 1 and ECU 13 is preferably a current interface, with two or three wires, the sensor signals being transmitted in coded form, preferably by means of pulse-shaped signals.
  • Part b) shows an exemplary embodiment in which the acceleration sensor 8 is bent over to save space in order to form a sandwich-shaped block on the electrical connection 9 ′ between the acceleration sensor element 8 and the signal conditioning element 6.
  • acceleration sensor acceleration element 9, 9 'electrical connection (between 6 and 8)

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Regulating Braking Force (AREA)

Abstract

La pression dans un pneu de véhicule peut être déterminée à l'aide d'un dispositif (1) « indépendant de la roue » relié de manière mécaniquement fixe à un élément (2) du châssis (3, 14) de véhicule oscillant avec la roue (4). Pour déterminer la pression de pneu, de préférence absolue, par combinaison de l'évaluation d'informations relatives à la vitesse de rotation et de l'analyse de la fréquence d'essieu, ledit dispositif (1) comporte un bloc (6) de prétraitement de signaux pourvu de composants électroniques pour le traitement des signaux de capteur, ledit bloc étant connecté avec un élément capteur magnétique (7) et un élément capteur d'accélération (8) ou avec un élément capteur combiné (5) magnétique / d'accélération à l'aide d'une liaison électro-conductrice (9). L'élément capteur magnétique (7) ou l'élément capteur (5) magnétique / d'accélération se trouve connecté de manière fonctionnelle avec un codeur magnétique (16) placé du côté de la roue. Pour améliorer la détermination des grandeurs caractéristiques, le comportement d'oscillation d'au moins deux roues (4) de préférence est analysé.
EP02800577A 2001-10-05 2002-09-26 Dispositif de detection combinee de l'acceleration d'essieu et de la vitesse de rotation des roues, ainsi que procede de determination de pression Ceased EP1436632A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10149247 2001-10-05
DE10149247 2001-10-05
PCT/EP2002/010825 WO2003031990A1 (fr) 2001-10-05 2002-09-26 Dispositif de detection combinee de l'acceleration d'essieu et de la vitesse de rotation des roues, ainsi que procede de determination de pression

Publications (1)

Publication Number Publication Date
EP1436632A1 true EP1436632A1 (fr) 2004-07-14

Family

ID=7701563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02800577A Ceased EP1436632A1 (fr) 2001-10-05 2002-09-26 Dispositif de detection combinee de l'acceleration d'essieu et de la vitesse de rotation des roues, ainsi que procede de determination de pression

Country Status (5)

Country Link
US (1) US20050072223A1 (fr)
EP (1) EP1436632A1 (fr)
JP (1) JP2005524054A (fr)
DE (1) DE10294624D2 (fr)
WO (1) WO2003031990A1 (fr)

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US20060220811A1 (en) * 2002-12-17 2006-10-05 Martin Griesser Method for indirectly identifying the loss of pressure on a motor vehicle wheel
JP3856389B2 (ja) * 2003-06-19 2006-12-13 本田技研工業株式会社 タイヤ空気圧監視装置
JP4835218B2 (ja) * 2005-07-01 2011-12-14 株式会社デンソー センサ装置
FR2891054B1 (fr) * 2005-09-16 2008-01-25 Peugeot Citroen Automobiles Sa Systeme et dispositf de mesure de la vitesse de rotation d'une roue de vehicule automobile
EP1826037A1 (fr) * 2006-02-28 2007-08-29 Delphi Technologies, Inc. Organe de mesure et procédé d'estimation de la pente pour un véhicule.
US7441464B2 (en) * 2006-11-08 2008-10-28 Honeywell International Inc. Strain gauge sensor system and method
US7804396B2 (en) * 2007-09-21 2010-09-28 Advanced Tire Pressure Systems, Inc. Tire pressure monitoring system having a collapsible casing
DE102008056664A1 (de) 2007-12-10 2009-06-18 Continental Teves Ag & Co. Ohg Verfahren zur indirekten Reifendrucküberwachung und Reifendrucküberwachungssystem
DE102008003340A1 (de) 2008-01-07 2009-07-09 Robert Bosch Gmbh Sensorvorrichtung
DE102008003341B4 (de) * 2008-01-07 2021-07-01 Robert Bosch Gmbh Sensorvorrichtung
DE102011112853A1 (de) * 2011-09-12 2013-03-14 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Hybridsensor
US9207256B2 (en) 2012-02-14 2015-12-08 Infineon Technologies Ag Auto-calibration of acceleration sensors
KR101668673B1 (ko) * 2012-12-11 2016-10-24 도요타 지도샤（주） 차량의 상태 검출 장치
US9050864B2 (en) * 2013-06-14 2015-06-09 The Goodyear Tire & Rubber Company Tire wear state estimation system and method
RU2559180C1 (ru) * 2014-05-26 2015-08-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Донской государственный аграрный университет" Устройство автоматического контроля и предаварийной сигнализации снижения давления воздуха в камерных и бескамерных шинах пневматических колес автомобилей
US9963132B2 (en) 2014-11-10 2018-05-08 The Goodyear Tire & Rubber Company Tire sensor-based vehicle control system optimization and method
US10245906B2 (en) 2014-11-11 2019-04-02 The Goodyear Tire & Rubber Company Tire wear compensated load estimation system and method
US9739689B2 (en) 2014-11-21 2017-08-22 The Goodyear Tire & Rubber Company Tire cornering stiffness estimation system and method
US9650053B2 (en) 2014-12-03 2017-05-16 The Goodyear Tire & Rubber Company Slip ratio point optimization system and method for vehicle control
US9963146B2 (en) 2014-12-03 2018-05-08 The Goodyear Tire & Rubber Company Tire lift-off propensity predictive system and method
US9340211B1 (en) 2014-12-03 2016-05-17 The Goodyear Tire & Rubber Company Intelligent tire-based road friction estimation system and method
GB2536497A (en) 2015-03-20 2016-09-21 Airbus Operations Ltd Method of monitoring the pressure of an aircraft tyre
US10406866B2 (en) * 2016-02-26 2019-09-10 The Goodyear Tire & Rubber Company Tire sensor for a tire monitoring system
CN106840717B (zh) * 2017-01-15 2024-03-29 华东交通大学 基于轴箱加速度抗电磁干扰的列车车轮振动测试方法
US11298991B2 (en) 2018-11-28 2022-04-12 The Goodyear Tire & Rubber Company Tire load estimation system and method
US12115821B2 (en) 2021-07-02 2024-10-15 The Goodyear Tire & Rubber Company Tire pressure monitoring system employing axle cross comparison
DE102022213403A1 (de) 2022-12-09 2024-06-20 Robert Bosch Gesellschaft mit beschränkter Haftung Sensoranordnung für ein Fahrzeug

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DE19720106A1 (de) * 1997-05-16 1998-11-19 Telefunken Microelectron Vorrichtung zur Aufnahme von elektrischen Bauteilen

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Also Published As

Publication number Publication date
JP2005524054A (ja) 2005-08-11
WO2003031990A1 (fr) 2003-04-17
DE10294624D2 (de) 2004-07-29
US20050072223A1 (en) 2005-04-07

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