WO2019092052A1 - Système de surveillance de pression de pneu de véhicule et procédé de surveillance de pression de pneu d'un véhicule - Google Patents

Système de surveillance de pression de pneu de véhicule et procédé de surveillance de pression de pneu d'un véhicule Download PDF

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Publication number
WO2019092052A1
WO2019092052A1 PCT/EP2018/080521 EP2018080521W WO2019092052A1 WO 2019092052 A1 WO2019092052 A1 WO 2019092052A1 EP 2018080521 W EP2018080521 W EP 2018080521W WO 2019092052 A1 WO2019092052 A1 WO 2019092052A1
Authority
WO
WIPO (PCT)
Prior art keywords
tire pressure
pressure monitoring
vehicle
monitoring system
central controller
Prior art date
Application number
PCT/EP2018/080521
Other languages
English (en)
Inventor
Xing Ping Lin
Original Assignee
Trw Automotive Electronics & Components Gmbh
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 Trw Automotive Electronics & Components Gmbh filed Critical Trw Automotive Electronics & Components Gmbh
Publication of WO2019092052A1 publication Critical patent/WO2019092052A1/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
    • B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
    • B60C23/0433—Radio signals
    • B60C23/0435—Vehicle body mounted circuits, e.g. transceiver or antenna fixed to central console, door, roof, mirror or fender
    • B60C23/0444—Antenna structures, control or arrangements thereof, e.g. for directional antennas, diversity antenna, antenna multiplexing or antennas integrated in fenders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0415—Automatically identifying wheel mounted units, e.g. after replacement or exchange of wheels
    • B60C23/0416—Automatically identifying wheel mounted units, e.g. after replacement or exchange of wheels allocating a corresponding wheel position on vehicle, e.g. front/left or rear/right
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
    • B60C23/0433—Radio signals
    • B60C23/0447—Wheel or tyre mounted circuits
    • B60C23/045—Means for detecting electromagnetic field changes being not part of the signal transmission per se, e.g. strength, direction, propagation or masking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
    • B60C23/0433—Radio signals
    • B60C23/0447—Wheel or tyre mounted circuits
    • B60C23/0452—Antenna structure, control or arrangement

Definitions

  • a vehicle tire pressure monitoring (TPM) system includes a TPM sensor inside each tire with a RF transmitter.
  • the TPM system also includes a vehicle based central controller/receiver.
  • a TPM sensor inside the tire senses the tire pressure information and transmits TPM information in a TPM signal via its RF transmitter.
  • the vehicle based TPM system controller/receiver receives the TPM signal from the TPM sensor RF transmission and relays the information to the a vehicle control module. When the TPM sensor senses low tire pressure, the vehicle control module will be alerted via the TPM signal.
  • a vehicle tire pressure monitoring system comprises a vehicle- based central controller with at least one receiving antenna and at least one tire pressure monitoring sensor with at least one transmitting antenna, wherein a multiple in and multiple out antenna system is provided that is assigned to the vehicle-based central controller as well as the at least one tire pressure monitoring sensor.
  • a method for tire pressure monitoring of a vehicle is provided, wherein a vehicle tire pressure monitoring system is used, with the following steps:
  • the multiple in and multiple out antenna system may be established by the antennas of the vehicle-based central controller, namely the receiving antennas, and the antennas of the at least one tire pressure monitoring sensor, namely the transmitting antennas. Accordingly, two receiving antennas and two transmitting antennas may be provided that establish a 2x2 communication, in particular a 2x2 communication matrix, also called channel matrix.
  • the vehicle tire pressure monitoring system is configured to analyze the signals exchanged between the vehicle-based central controller and the at least one tire pressure monitoring sensor so as to provide location information of the at least one tire pressure monitoring sensor.
  • the signals are exchanged between the transmitting antennas and the receiving antennas of the respective components of the vehicle tire pressure monitoring system.
  • the signals are assigned to the multiple in and multiple out antenna system since the respective antennas of the multiple in and multiple out antenna system are used for exchanging the signals.
  • the vehicle-based central controller has at least two receiving antennas.
  • the vehicle-based central controller may have a receiver.
  • the receiver processes the signals received by the at least one receiving antenna.
  • the at least one tire pressure monitoring sensor may have at least two transmitting antennas.
  • the at least one tire pressure monitoring sensor has a transmitter.
  • the transmitter provides the signals to be transmitted via the at least one transmitting antenna.
  • the transmitting antennas are polarized orthogonally with respect to each other.
  • a first antenna of the tire pressure monitoring sensor may be a horizontal antenna
  • a second antenna of the tire pressure monitoring sensor may be a vertical antenna.
  • the vehicle tire pressure monitoring system is configured to determine a coupling matrix describing the communication between the vehicle-based central controller and the at least one tire pressure monitoring sensor.
  • the coupling matrix is used for mathematically defining the communication of the participants of the multiple in and multiple out antenna system, namely the vehicle-based central controller and the at least one tire pressure monitoring sensor, in particular the respective antennas assigned thereto.
  • the number of cells of the coupling matrix determined corresponds to the number of tire pressure monitoring sensors. Accordingly, the coupling matrix may have four cells in case of four tire pressure monitoring sensors that might be assigned to each tire of a typical vehicle.
  • each cell of the coupling matrix determined may correspond to a matrix, wherein the dimension of the matrix corresponds to the number of the antennas assigned to the vehicle-based central controller and the number of the antennas assigned to each tire pressure monitoring sensor.
  • each cell has a dimension of 3x2, namely six.
  • the vehicle tire pressure monitoring system may be configured to gather phase and amplitude information of the signals exchanged, and wherein the vehicle tire pressure monitoring system is configured to use the phase and amplitude information gathered for calculating the coupling matrix.
  • the matrix is calculated based on the signal information gathered, namely the phase and amplitude information.
  • the tire pressure monitoring system is configured to determine the distance and signal arrival angles from the at least one tire pressure monitoring sensor by evaluating the coupling matrix.
  • the coupling matrix describing the communication via the multiple in and multiple out antenna system can be analyzed appropriately so as to gather the respective information.
  • the respective tire pressure monitoring sensor can be located easily.
  • the signals exchanged between the vehicle-based central controller and the at least one tire pressure monitoring sensor are analyzed so as to provide location information of the at least one tire pressure monitoring sensor.
  • a coupling matrix is determined that describes the communication between the vehicle-based central controller and the at least one tire pressure monitoring sensor, namely the communication via the multiple in and multiple out antenna system.
  • the distance and signal arrival angles from the at least one tire pressure monitoring sensor may be determined.
  • the distance and signal arrival angles from the at least one tire pressure monitoring sensor are determined by evaluating the coupling matrix determined previously.
  • the MIMO antenna system (multiple in and multiple out antenna system) provides TPM auto location functionality in a TPM system to provide the sensor location (tire location) identification function.
  • the multiple in and multiple out antenna system also enhances the radio frequency link, reduces the sensor battery power, and reduces the sensor size.
  • TPM sensors there are typically four TPM sensors in the vehicle, one associated with each tire.
  • the receiver of the vehicle tire pressure monitoring system may be configured to perform the steps mentioned above, namely analyzing the signals exchanged, determining the coupling matrix and/or evaluating the coupling matrix.
  • Figure 1 schematically shows a vehicle tire pressure monitoring system according to the invention that is used for conducting a method for tire pressure monitoring of a vehicle according to the invention.
  • Figure 1 shows a vehicle with a vehicle tire pressure monitoring system 10 that comprises a vehicle-based central controller 12 with a receiver and at least one receiving antenna B_Ant.
  • the vehicle tire pressure monitoring system 10 comprises at least one tire pressure monitoring (TPM) sensor 14 with a transmitter.
  • TPM tire pressure monitoring
  • two tire pressure monitoring sensors 14 are shown for the purpose of simple illustration even though typically four TPM sensors 14 are provided.
  • Each TPM sensor 14 has at least one transmitting antenna A_Ant. In the shown embodiment, the TPM sensor 14 has two transmitting antennas A_Ant_1 , A_Ant_2. However, each TPM sensor 14 may have multiple transmitting antennas from 1 to n.
  • the transmitting antennas A_Ant_1 , A_Ant_2 may be orientated orthogonally with respect to each other wherein the first transmitting antenna is a vertical one and the second transmitting antenna is a horizontal one.
  • each sensor's transmitting antenna A_Ant and the receiving antennas B_Ant are governed by the following equations:
  • A antennas are at the sensor side.
  • B antennas are at the receiver side.
  • the C is a coupling matrix describing the communication between the vehicle- based central controller 12 and the TPM sensor(s) 14, namely the communication of a multiple in and multiple out antenna system 16 established by the respective antennas A_Ant, B_Ant.
  • C parameters are associated with the relative location between the respective antennas A_Ant, B_Ant. It has signal amplitude (A) and phase ( ⁇ ) information.
  • Cij_31 Cij_32 where [ij] can represent the location of the sensor 14.
  • [1 1 ] can represent the front left; [12] can represent the front right;
  • [21 ] can represent the rear left and [22] can represent the rear right.
  • This correlation factor could be one that simply just uses amplitude information or TPM message reception rate.
  • the location of the sensor 14 can be identified.
  • the vehicle tire pressure monitoring system 10 is configured to: - gather phase and amplitude information of the signals exchanged; to use the phase and amplitude information gathered for calculating the coupling matrix C describing the communication between the vehicle-based central controller 12 and the at least one tire pressure monitoring sensor 14; analyze the signals exchanged between the vehicle-based central controller 12 and the at least one tire pressure monitoring sensor 14 so as to provide location information of the at least one tire pressure monitoring sensor 14; - to determine the distance and signal arrival angles from the at least one tire pressure monitoring sensor 14 by evaluating the coupling matrix C.
  • the number of cells corresponds to the number of tire pressure monitoring sensors 14 of the vehicle tire pressure monitoring system 10.
  • Each cell of the coupling matrix C determined corresponds to a matrix, and wherein the dimension of the matrix corresponds to the number of the receiving antennas B_Ant assigned to the vehicle-based central controller 12 and the number of the transmitting antennas A_Ant assigned to each tire pressure monitoring sensor 14.
  • the MIMO antenna system 16 not only provides auto location performance, it also improves the RF communication by reducing the multipath and signal fading.
  • the MIMO antenna system 16 therefore can reduce the sensor output power, reduce the battery size, and reduce the sensor size, which increases the service life span of the TPM sensor 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measuring Fluid Pressure (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

L'invention concerne un système de surveillance de pression de pneu de véhicule, comprenant un contrôleur central basé sur un véhicule avec au moins une antenne de réception et au moins un capteur de surveillance de pression de pneu avec au moins une antenne d'émission. Un système d'antenne à entrées multiples et à sorties multiples est prévu qui est attribué au contrôleur central basé sur le véhicule ainsi qu'au ou aux capteurs de surveillance de pression de pneu. L'invention concerne également un procédé de surveillance de pression de pneu.
PCT/EP2018/080521 2017-11-07 2018-11-07 Système de surveillance de pression de pneu de véhicule et procédé de surveillance de pression de pneu d'un véhicule WO2019092052A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762582388P 2017-11-07 2017-11-07
US62/582,388 2017-11-07

Publications (1)

Publication Number Publication Date
WO2019092052A1 true WO2019092052A1 (fr) 2019-05-16

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PCT/EP2018/080521 WO2019092052A1 (fr) 2017-11-07 2018-11-07 Système de surveillance de pression de pneu de véhicule et procédé de surveillance de pression de pneu d'un véhicule

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WO (1) WO2019092052A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022049209A1 (fr) * 2020-09-04 2022-03-10 Continental Automotive Gmbh Procédé de détection d'un changement de localisation d'au moins une roue d'un véhicule automobile
US11865874B2 (en) 2020-09-04 2024-01-09 Continental Automotive Technologies GmbH Method for detecting a change in location of at least one wheel of a motor vehicle

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1419908A1 (fr) * 2002-11-14 2004-05-19 TRW Automotive U.S. LLC Procédé et appareil pour associer les pneumatiques avec les positions des pneumatiques d'un véhicule
US20070198150A1 (en) * 2004-03-12 2007-08-23 Manabu Kato System For Monitoring Condition Of Wheel
DE102007033248A1 (de) * 2006-10-23 2008-04-30 Lear Corp., Southfield Reifendruck-Überwachungssystem zum Assoziieren von Reifendruck-Überwachungssensoren mit Radpositionen an einem Fahrzeug
US20080100429A1 (en) * 2006-11-01 2008-05-01 Lear Corporation Tire pressure monitoring (tpm) and remote keyless entry (rke) system for a vehicle
US20110254677A1 (en) * 2010-04-19 2011-10-20 Sun chun-yi Smart antenna system and method for tire pressure monitoring and smart tire pressure monitoring system
US20110304442A1 (en) * 2010-06-15 2011-12-15 Honda Motor Co., Ltd. Recognizing tire sensor location in factory mode for tpms and smart entry system
US20160176247A1 (en) * 2014-12-17 2016-06-23 Continental Automotive Gmbh Low-frequency emission electronic unit emitting to a mobile wheel electronic unit of a vehicle and associated low-frequency signal transmission method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1419908A1 (fr) * 2002-11-14 2004-05-19 TRW Automotive U.S. LLC Procédé et appareil pour associer les pneumatiques avec les positions des pneumatiques d'un véhicule
US20070198150A1 (en) * 2004-03-12 2007-08-23 Manabu Kato System For Monitoring Condition Of Wheel
DE102007033248A1 (de) * 2006-10-23 2008-04-30 Lear Corp., Southfield Reifendruck-Überwachungssystem zum Assoziieren von Reifendruck-Überwachungssensoren mit Radpositionen an einem Fahrzeug
US20080100429A1 (en) * 2006-11-01 2008-05-01 Lear Corporation Tire pressure monitoring (tpm) and remote keyless entry (rke) system for a vehicle
US20110254677A1 (en) * 2010-04-19 2011-10-20 Sun chun-yi Smart antenna system and method for tire pressure monitoring and smart tire pressure monitoring system
US20110304442A1 (en) * 2010-06-15 2011-12-15 Honda Motor Co., Ltd. Recognizing tire sensor location in factory mode for tpms and smart entry system
US20160176247A1 (en) * 2014-12-17 2016-06-23 Continental Automotive Gmbh Low-frequency emission electronic unit emitting to a mobile wheel electronic unit of a vehicle and associated low-frequency signal transmission method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022049209A1 (fr) * 2020-09-04 2022-03-10 Continental Automotive Gmbh Procédé de détection d'un changement de localisation d'au moins une roue d'un véhicule automobile
FR3113863A1 (fr) * 2020-09-04 2022-03-11 Continental Automotive Procédé de détection d’un changement de localisation d’au moins une roue d’un véhicule automobile
US11865874B2 (en) 2020-09-04 2024-01-09 Continental Automotive Technologies GmbH Method for detecting a change in location of at least one wheel of a motor vehicle

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