WO2009027233A1 - Dispositif et procédé de réduction de la distance radio dans des détecteurs its - Google Patents

Dispositif et procédé de réduction de la distance radio dans des détecteurs its Download PDF

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Publication number
WO2009027233A1
WO2009027233A1 PCT/EP2008/060634 EP2008060634W WO2009027233A1 WO 2009027233 A1 WO2009027233 A1 WO 2009027233A1 EP 2008060634 W EP2008060634 W EP 2008060634W WO 2009027233 A1 WO2009027233 A1 WO 2009027233A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
tire
unit
motor vehicle
data
Prior art date
Application number
PCT/EP2008/060634
Other languages
German (de)
English (en)
Inventor
Peter Rieth
Ulrich STÄHLIN
Original Assignee
Continental Teves Ag & 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 Teves Ag & Co. Ohg filed Critical Continental Teves Ag & Co. Ohg
Priority claimed from DE102008038914A external-priority patent/DE102008038914A1/de
Publication of WO2009027233A1 publication Critical patent/WO2009027233A1/fr

Links

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
    • B60C23/02—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
    • 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
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • 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
    • B60T8/1725—Using tyre sensors, e.g. Sidewall Torsion sensors [SWT]

Definitions

  • the present invention relates to a device and a method for reducing the radio distance in an ITS sensor (Intelligent Tire Sensor), which is integrated for detecting dynamic driving data in a tire of a motor vehicle, and is connected to a wireless communication unit installed by the motor vehicle which forwards the dynamic driving data received from the ITS sensor to an evaluation unit for signal processing.
  • ITS sensor Intelligent Tire Sensor
  • a driving dynamics system of a motor vehicle requires sensor-technically determined input data for controlling the driving dynamics of the vehicle, which provide information about the current vehicle condition.
  • data come, inter alia, from ITS (intelligent tire sensor) sensors, which are integrated in a tire of the motor vehicle and there primarily measure the tire pressure or other driving dynamics data to the driving dynamics system, for example, to implement an ESP function To make available.
  • ITS intelligent tire sensor
  • Other parameters, such as the deformation of the tire can be determined using modern ITS sensors.
  • EP 1 227 944 B1 discloses a generic device for wireless communication between an ITS sensor arranged in a tire and an evaluation unit mounted on the side of the vehicle.
  • the evaluation unit evaluates the shift values of the tire detected by the ITS sensor and calculates therefrom vehicle dynamics data such as the forces acting on the tire, the tire pressure, the rotational speed or the speed of the measuring point and its acceleration.
  • vehicle dynamics data such as the forces acting on the tire, the tire pressure, the rotational speed or the speed of the measuring point and its acceleration.
  • the output signals of the ITS sensor or of the evaluation device are coupled in a manner known per se without contact into an assigned wireless communication unit in the vehicle.
  • the vehicle-side communication unit is connected to a control unit, which influences the forces acting on the tire due to the output signals of the evaluation unit by engaging in the engine or brake system.
  • EP 1 681 660 A1 discloses another known device for the wireless communication of an ITS sensor with a vehicle-side communication unit.
  • a plurality of ITS sensors are arranged equidistantly from each other along the tire circumference.
  • Each ITS sensor is equipped with a wireless communication interface which communicate with a likewise within the tire, preferably here but the rim side arranged base station.
  • the base station collects the data from all the tire-integrated ITS sensors, processes them and sends the processed vehicle dynamics data wirelessly to a vehicle control unit integrated in the vehicle chassis.
  • Disadvantages of the above-discussed prior art solutions for the wireless communication of ITS sensors are the usually long radio links between the tire and the communication unit installed by the vehicle chassis.
  • the invention includes the technical teaching that the motor vehicle side communication unit is part of an electromechanical brake unit mounted close to the tire.
  • the communication unit representing the receiver for the ITS sensor is integrated in an electromechanical brake unit (EMB) which is able to build up a reliable communication connection to the at least one ITS sensor due to the proximity to the tire for braking purposes.
  • EMB electromechanical brake unit
  • this data connection can also be used for forwarding the data acquired by the ITS sensor according to a further improvement of the invention. Further signal-processing can then take place by an electronic evaluation unit arranged centrally in the motor vehicle, which according to another measure improving the invention can also be part of an electronic brake control of the motor vehicle.
  • the advantage of this embodiment is that a modern electronic brake control, for example, to implement an ESP (Electronic Stability Program) function as input data requires the vehicle dynamic data determined by an ITS sensor.
  • ESP Electronic Stability Program
  • An electromechanical brake in which the solution according to the invention is implemented, produces, in accordance with its main function, the braking pressure required for braking the motor vehicle by means of an electric motor which actuates a caliper which cooperates with a brake disc of the wheel for the purpose of braking.
  • This also known as wheel brake module electromechanical brake unit consists mainly of an electronic control unit, an electric motor and a transmission. Electric motor and gearbox form the so-called actuator, which generates the tensile forces in the caliper.
  • actuators of a motor vehicle are able to provide forces of up to several tons within milliseconds.
  • the power demand for the EMB is quite high and would overwhelm the current 12 volt power grids of motor vehicles.
  • an EMB is designed for a higher operating voltage.
  • This voltage is the EMB but not directly obtained from the vehicle battery.
  • Additional accumulators usually buffer current spikes.
  • the shared power supply in the vehicle can thus satisfy the power requirements of the actuators, without burdening the actual on-board electrical system.
  • the driver is with equipped with additional accumulators, because the high storage capacity allows even the onward journey, if the generator of the motor vehicle can no longer supply charging current to the accumulators because of a defect.
  • such a design of the EMB also corresponds to today's division of a hydraulic brake system into two separate circuits.
  • EMB electric parking brake
  • ESBS partial braking
  • ABS full braking
  • BASR brake intervention
  • GMR yaw moment control
  • BA brake assistance
  • connection between the at least one tire-integrated ITS sensor and the wireless vehicle-side communication unit should be configured as a short-range communication link.
  • this is the Bluetooth standard.
  • the ITS sensor is designed as a passive transponder, a communication via RFID (radio frequency identification) is recommended.
  • the ITS sensor used in the context of the present invention is embodied as an active, eg battery-operated or radio-frequency module equipped with a microgenerator.
  • the capacity of the integrated battery in the ITS sensor is usually well beyond the normal life of a tire for short-range communications. Due to the own operating voltage supply for the ITS sensor, a continuous short-range communication can be carried out.
  • At least one wear detection sensor in the tire, in addition to the above-explained ITS sensor, which is preferably designed in the manner of a passive transponder explained above. Because for the purpose of wear detection of a tire, the usually discontinuous operated transponder technology is sufficient. Such a wear detection sensor is incorporated into the material of the tire during manufacture. Once the wear detection sensor is cleared and finally severed, it is no longer able to send data to an associated transponder receiver, indicating that the tire has shut down. If such transponder receivers are installed at different height levels in the tire, which are traversed one after the other, even a graded wear detection can take place.
  • the transponder receiver assigned to the wear detection sensor on the vehicle side is likewise preferably a component of the electromechanical brake unit in order to allow a short radio distance for this purpose as well.
  • the wear detection sensor designed as a passive transponder can be activated and read with relatively low electrical energy.
  • both the dynamic data of the at least one ITS sensor received by the wireless communication unit and, if appropriate, those received by the transponder Wear condition data within the near-wheel electro-mechanical brake unit are converted into serial data.
  • This serial data can be transmitted by data bus to the central evaluation unit in the motor vehicle, which is preferably integrated in the EBS (electronic brake control).
  • the figure shows a schematic representation of a device for reducing the radio distance in an ITS sensor.
  • an ITS sensor 3 is integrated in a tire 1 of a motor vehicle 2.
  • the ITS sensor 3 detects the tire pressure as well as the external forces acting on the tire 1 and transmits these vehicle dynamics data by radio to a wireless communication unit 4 permanently installed on the part of the motor vehicle 2.
  • the wireless communication unit 4 on the part of the motor vehicle 2 is here an integral part of an electromechanical brake unit 5 of the motor vehicle 2. In this way, a very small radio distance between the ITS sensor 3 and the communication unit 4 is achieved. Because the electromechanical brake unit 5 is in the region of the hub 6 of the Motor vehicle 2 arranged and generated from electrical energy by caliper for a brake disc 8 required for braking braking force.
  • the wireless communication unit 4 forwards the driving dynamics data received from the ITS sensor 3 to an evaluation unit 9 installed centrally in the motor vehicle for signal processing.
  • the communication unit 4 uses an electrical connection line 10, which is usually provided for controlling the electromechanical brake unit 5 via data bus.
  • the evaluation unit 9 is in this embodiment part of an electronic brake control of the motor vehicle 2 and determined based on the driver's braking request and input side supplied sensor signals that also contain the driving dynamics data of the ITS sensor 3, the control signal for the electromechanical brake unit 5.
  • This driving dynamics functions, as ESP, ABS (anti-lock braking system) into account.
  • a wear detection sensor 11 is integrated in addition to the ITS sensor 3, which is designed in the manner of a passive transponder and is supplied so far from the outside via electromagnetic radiation with the required operating energy.
  • the wear detection sensor 11 is integrated below the tread of the tire 1 and is destroyed as soon as it is cleared. A failure of the wear detection sensor 11 is interpreted in terms of control technology as reaching the wear limit of the tire 1. Trained in the manner of a passive transponder wear detection sensor 11 is activated and read by a likewise integrated by the electromechanical brake unit 5 transponder receiver 12.
  • the ITS sensor 3 in this exemplary embodiment is a battery-operated radio module.
  • the battery integrated in the ITS sensor 3 is dimensioned with its capacity for a continuously long operation over the normal service life of the tire 1 is ensured. Thanks to the very small radio distance to the communication unit 4, the inventive ITS sensor 3 requires a fairly low operating energy. The radio distance is ensured via a short-range communication connection, here according to the Bluetooth standard.
  • the invention is not limited to the embodiment described above.
  • other suitable means for wireless short-range communication between ITS sensor 3 and vehicle-side communication unit 4 can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

Dispositif et procédé de réduction de la distance radio dans un détecteur ITS (3), lequel est intégré dans un pneu (1) d'un véhicule à moteur (2), pour la détection de données de dynamique de conduite, et qui est connecté avec une unité de communication sans fil (4) montée dans le véhicule à moteur (2), ladite unité transmettant les données de dynamique de conduite reçues du détecteur ITS (3) à une unité d'évaluation (9), en vue du traitement de signaux, caractérisé en ce que l'unité de communication (4) est un composant d'une unité de freinage électromécanique (5) montée localement sur le pneu (1).
PCT/EP2008/060634 2007-08-29 2008-08-13 Dispositif et procédé de réduction de la distance radio dans des détecteurs its WO2009027233A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007040986 2007-08-29
DE102007040986.0 2007-08-29
DE102008038914.5 2008-08-13
DE102008038914A DE102008038914A1 (de) 2007-08-29 2008-08-13 Einrichtung und Verfahren zur Reduktion der Funkdistanz für ITS-Sensoren

Publications (1)

Publication Number Publication Date
WO2009027233A1 true WO2009027233A1 (fr) 2009-03-05

Family

ID=39798253

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/060634 WO2009027233A1 (fr) 2007-08-29 2008-08-13 Dispositif et procédé de réduction de la distance radio dans des détecteurs its

Country Status (1)

Country Link
WO (1) WO2009027233A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012000700A1 (fr) * 2010-06-29 2012-01-05 Robert Bosch Gmbh Capteur de vitesse de rotation, appareil de commande pour la régulation du comportement dynamique d'un véhicule, appareil de commande, systèmes équipés d'appareils de ce type, et procédé de réception de données par l'appareil de commande par l'intermédiaire d'une station radio
CN104806085A (zh) * 2015-03-20 2015-07-29 云丁网络技术(北京)有限公司 一种智能门锁系统及其智能提醒方法
CN105793687A (zh) * 2013-11-26 2016-07-20 株式会社普利司通 轮胎异常磨损的估计方法和估计设备
CN106394111A (zh) * 2016-10-17 2017-02-15 天津电子信息职业技术学院 一种车轮毂自动配平装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0937615A2 (fr) * 1998-02-19 1999-08-25 Siemens Aktiengesellschaft Système de capteur et procédé pour surveiller/mesurer l'adhérence d'un pneu de véhicule avec la piste de roulage et autres données physiques du pneu
US20030234722A1 (en) * 1999-12-20 2003-12-25 Anthony Lonsdale Tire condition monitoring system
US6810316B2 (en) * 2001-11-01 2004-10-26 Hitachi, Ltd. Brake device for vehicle
US20060195233A1 (en) * 2003-09-25 2006-08-31 Toyota Jidosha Kabushiki Kaisha Vehicle wheel information processing device and method therefor
US20070013502A1 (en) * 2005-07-14 2007-01-18 U-Comm Technology Apparatus for monitoring tire pressure using radio frequency identification system
US20070170912A1 (en) * 2004-02-24 2007-07-26 Manabu Kato Rotation sensor, and method for outputting signals from rotation sensor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0937615A2 (fr) * 1998-02-19 1999-08-25 Siemens Aktiengesellschaft Système de capteur et procédé pour surveiller/mesurer l'adhérence d'un pneu de véhicule avec la piste de roulage et autres données physiques du pneu
US20030234722A1 (en) * 1999-12-20 2003-12-25 Anthony Lonsdale Tire condition monitoring system
US6810316B2 (en) * 2001-11-01 2004-10-26 Hitachi, Ltd. Brake device for vehicle
US20060195233A1 (en) * 2003-09-25 2006-08-31 Toyota Jidosha Kabushiki Kaisha Vehicle wheel information processing device and method therefor
US20070170912A1 (en) * 2004-02-24 2007-07-26 Manabu Kato Rotation sensor, and method for outputting signals from rotation sensor
US20070013502A1 (en) * 2005-07-14 2007-01-18 U-Comm Technology Apparatus for monitoring tire pressure using radio frequency identification system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012000700A1 (fr) * 2010-06-29 2012-01-05 Robert Bosch Gmbh Capteur de vitesse de rotation, appareil de commande pour la régulation du comportement dynamique d'un véhicule, appareil de commande, systèmes équipés d'appareils de ce type, et procédé de réception de données par l'appareil de commande par l'intermédiaire d'une station radio
CN105793687A (zh) * 2013-11-26 2016-07-20 株式会社普利司通 轮胎异常磨损的估计方法和估计设备
US10286734B2 (en) 2013-11-26 2019-05-14 Bridgestone Corporation Method and apparatus for estimating uneven tire wear
CN104806085A (zh) * 2015-03-20 2015-07-29 云丁网络技术(北京)有限公司 一种智能门锁系统及其智能提醒方法
CN106394111A (zh) * 2016-10-17 2017-02-15 天津电子信息职业技术学院 一种车轮毂自动配平装置

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