WO2003051652A1 - Systeme de controle de la pression des pneumatiques des roues d'un vehicule - Google Patents
Systeme de controle de la pression des pneumatiques des roues d'un vehicule Download PDFInfo
- Publication number
- WO2003051652A1 WO2003051652A1 PCT/FR2002/004435 FR0204435W WO03051652A1 WO 2003051652 A1 WO2003051652 A1 WO 2003051652A1 FR 0204435 W FR0204435 W FR 0204435W WO 03051652 A1 WO03051652 A1 WO 03051652A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wheels
- wheel
- speeds
- vehicle
- speed
- Prior art date
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
- B60C23/0415—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
- B60C23/0474—Measurement control, e.g. setting measurement rate or calibrating of sensors; Further processing of measured values, e.g. filtering, compensating or slope monitoring
- B60C23/0477—Evaluating waveform of pressure readings
-
- 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
Definitions
- the present invention relates to tire pressure monitoring systems for motor vehicle wheels (TPMS, Tire Pressure Monitoring System) with, on each wheel, a pressure sensor and a transmitter for transmitting the pressure to a control member.
- TPMS Tire Pressure Monitoring System
- the emission signals include data identifying the sensors and, if the wheels of a vehicle are never changed, a simple initial learning, in the factory, of the pairing of the signals and the wheels, would allow to determine the location, relative to the chassis of the vehicle, of the sensors and therefore of the defective tires.
- the wheels of a vehicle can be changed from time to time and inverted, if only, for example, when mounting "snow" tires.
- the Applicant has therefore sought to solve the problem of discrimination of the pressure sensors of the tires of motor vehicle wheels.
- EP 806 307 teaches to associate with the signal from a pressure sensor of a wheel data on the speed of rotation of the wheel determined doubly, on the one hand, from the wheel itself and, d on the other hand, from the chassis of the vehicle, ensuring the positioning reference.
- the present application therefore aims to propose a lighter solution.
- the invention provides a system for controlling the pressure of the tires of the wheels of a motor vehicle comprising a control member and, on each wheel, a pressure sensor and a transmitter, for transmitting to the body of . monitors a pressure signal comprising sensor identification data, and means for determining the rotational speeds of the wheels to associate the corresponding sensor wheel with each pressure signal, characterized in that the means for determining the rotational speeds of the wheels comprises means for comparing the rotational speeds of the wheels determined in different ways.
- the wheels of a vehicle rotate at substantially different rotational speeds.
- differences in rotational speeds due to differences in tire pressure, differences in wear of the treads of these same tires, vehicle dynamics, load distribution, temperature.
- the invention is remarkable in that it requires no multiplicity of sensors.
- said means of determination use fixed sensors of wheel rotation speed the location of which is known, preferably sensors of the anti-lock braking system (ABS, anti-blocking System).
- ABS anti-lock braking system
- the invention is then interesting by the use of existing speed sensors, which is a low cost solution.
- the operating mode of the comparison means ensures excellent reliability of the location results, taking into account the quality of the anti-lock sensors.
- the means for determining the rotational speeds preferably comprise means for determining the periods of the modulation envelopes of the signals emitted by the transmitters coupled to the pressure sensors ' and in this way deduce the rotational speeds of the wheels, which allows comparisons with the speeds provided by the fixed fixed sensors, to locate the sensors pressure.
- said comparison means are arranged to make comparisons only during non-rectilinear trajectory phases of the vehicle.
- the two wheels of the same train, front or rear do not turn at the same speed, just like the two wheels on the same side, right or left.
- the speeds provided by the fixed sensors ABS are already more distinct from each other, which is advantageous.
- the wheel speeds can be calculated and the calculated speeds used as terms. of the speed comparison and therefore locate the sensors and, consequently, check the pressure of the different tires thus located.
- V c / T (2)
- the invention is all the more remarkable since the determination means may not include any wheel rotation speed sensor.
- FIG. 1 shows the block diagram of the system of the invention
- FIG. 2 shows a typical signal delivered by a system pressure sensor and its modulation envelope
- FIG. 3 shows the flow diagram of the method for determining the location of the system wheel pressure sensors
- - Figures 4 illustrates the installation of the system on a four-wheeled vehicle and - Figure 5 illustrates the dynamic behavior of the vehicle wheels in a turn.
- the fixed receiver 14 comprises, in series, a receiving antenna 141, a demodulator 142, supplying an analog signal 22 free of its carrier, a filter 143 and an electronic device 144 for processing the tire pressure data delivering data 21 'to a supervisory body 17.
- the fixed receiver 14 makes it possible to transform the radio signal 21 into digital data 21 ′ comprising the pressure of the tire and its identification.
- a bypass 16 here at the output of the demodulator 142, supplies the control member 17.
- the control member 17 comprises, in series, a filtering circuit 171, here an RC filter, providing a filtered signal 23, a sampler-blocker 172 and an analog-digital converter 173 and a microprocessor 174.
- the microprocessor 174 comprises program memories 178, 179, data memory 177 and clock 176.
- the control unit 17 outputs the pressure, identification and location data to a TPMS component 175 for managing these data.
- the member 17 receives speed data 18 from the vehicle as input via a data smoothing circuit 15.
- the program of the memory 178 comprises at least one step 34 (FIG. 3) of calculating the rotational speeds of the wheels of the vehicle.
- the program of the memory 179 comprises at least one step 50 (FIG. 3) for comparing the wheel rotation speeds.
- the control member 17 also receives data 20 on the rotational speeds of the wheels, and their location, from the ABS sensors, always by means of the smoothing circuit 15.
- control member 17 also receives data 19 on the position of the steering wheel, of indication of left or right turn, or of steering angle of the wheels.
- the signal 21 delivered by the sensor 12 and transmitted by its transmitter 13 undergoes parasitic modulation due in particular to the bodywork 10 of the vehicle before being received by the receiver 14 and being processed therein to supply the tire pressure.
- the signal 22 is also filtered by the filter 171 of the control member 17, with a cutoff frequency F c slightly greater than the maximum rotation frequency of the wheels.
- the signal 23 is sampled and digitized at a sampling frequency fe by the sampler-blocker 172 which freezes the analog quantities at regular times and the analog-digital converter 173 which supplies, at output 24, digital samples Pi of the signal whose period is to be determined ( Figure 2).
- the frequency fe is at least twice the cut-off frequency F e .
- the microprocessor 174 transmits the control to the program of the memory 178, which acquires and stores (30) n samples Pi in memory 177, from Pi to P n respectively from the memory area Mi to the area memory M n .
- the value of n will be discussed later.
- the program of memory 178 calculates the speed of rotation of the wheel which it transmits to the TPMS system 175. For this, at this stage, it successively performs, for wheel i, the following operations:
- a function (39) coordinates the acquisition 172, 173 and the program memory 178 through the clock 176.
- the operations performed by the program of memory 178 will now be detailed.
- the data Pi is stored in memory 177 for an observation period ⁇ .
- the observation time ⁇ is determined from information on the vehicle speed available elsewhere, for example that provided by the on-board instruments: speedometer, odometer.
- the observation time ⁇ can, from a certain number of calculation cycles, be optimized to a lower value, taking into account the signal history, knowledge of the vehicle speed and the position from the maximum in the period, up to a value close to T but always greater so that the periodic signal whose period it is sought to determine is there in its entirety.
- the n sampled values obtained Pi, P 2 are stored, from a time to and during the observation time ⁇ thus determined. , ..., Pi, ..., P n in an order, for example chronological 1, 2, ..., i, ... n.
- the number n of the stored values is such that
- n fe. ⁇ . (4)
- a cycle contains at least one observation duration to which, in theory, a treatment duration must be added, the duration of the cycle should be of a longer duration and, in principle, fixed.
- This provides a measurement of the speed of rotation of the wheels continuously at a frequency
- This frequency is variable and depends on the speed of the vehicle. The higher the speed, the higher the frequency. Thus, there is a wheel rotation speed Vi all the more quickly the higher the vehicle speed.
- the program module of the memory 179 performs the comparisons of the rotational speeds of the wheels in order to deduce therefrom the locations of the wheel pressure sensors.
- This program module performs the following operations
- initialization (38) of the following cycle consisting in updating the duration ⁇ and the number n calculated previously and in erasing the memory 177,
- the speeds Vi are therefore compared with the rotational speeds of the wheels Uj supplied by the speed sensors, the location of which is known Lj, of the anti-lock device for the wheels.
- Figure 5 shows how these speeds can be different during turns, in this case a right turn, but the results would be strictly opposite for a left turn.
- the vehicle whose four wheels are referenced respectively by 10a, 10b, 10c, 10d initiates a right turn by the fact that the wheels 10a and 10b of the front axle are printed with a steering angle p.
- a steering angle p Suppose, for simplicity, this fixed angle.
- the vehicle will travel in a circle as well as each of its wheels.
- the wheels 10a, 10b, 10c, 10d will thus travel through circles of respective radii RI, R2, R3, R4, which can be evaluated as a first approximation as a function of the wheelbase E and of the length L of the vehicle, of the as follows:
- ABS sensors instead of ABS sensors, specific sensors 11 could be used, directly connected to the smoothing circuit 15.
- the steering angle p for the period of measurement of the speed of rotation of the wheels is between two predetermined thresholds less than Pii m or more than a third predetermined threshold greater than pn m .
- the value of the steering angle is a value which depends on the position of the steering wheel and which can be supplied by the power steering system.
- the speeds of the wheels are compared with the linear speed S of the vehicle, delivered at 18 for example by the speedometer or deduced from the odometer to locate the wheels as a function of the direction of the turns.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/498,715 US7313953B2 (en) | 2001-12-18 | 2002-12-18 | System for controlling a vehicle wheel tyre pressure |
EP02804944A EP1465782B1 (fr) | 2001-12-18 | 2002-12-18 | Systeme de controle de la pression des pneumatiques des roues d'un vehicule |
DE60223409T DE60223409T2 (de) | 2001-12-18 | 2002-12-18 | System zur steuerung des reifendrucks eines fahrzeugrads |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR01/16368 | 2001-12-18 | ||
FR0116368A FR2833523B1 (fr) | 2001-12-18 | 2001-12-18 | Systeme de controle de la pression des pneumatiques des roues d'un vehicule |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003051652A1 true WO2003051652A1 (fr) | 2003-06-26 |
Family
ID=8870623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/004435 WO2003051652A1 (fr) | 2001-12-18 | 2002-12-18 | Systeme de controle de la pression des pneumatiques des roues d'un vehicule |
Country Status (6)
Country | Link |
---|---|
US (1) | US7313953B2 (fr) |
EP (1) | EP1465782B1 (fr) |
DE (1) | DE60223409T2 (fr) |
ES (1) | ES2295459T3 (fr) |
FR (1) | FR2833523B1 (fr) |
WO (1) | WO2003051652A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2964345A1 (fr) * | 2010-09-07 | 2012-03-09 | Continental Automotive France | Procede d'affectation des roues d'un vehicule a leur localisation |
WO2012139711A1 (fr) * | 2011-04-14 | 2012-10-18 | Continental Automotive France | Procede de localisation de la position de roues d'un vehicule |
EP2993064A1 (fr) * | 2014-09-03 | 2016-03-09 | Continental Automotive GmbH | Procédé et système pour déterminer un angle de rotation d'au moins une roue d'un véhicule |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004004292A1 (de) * | 2004-01-28 | 2005-09-08 | Siemens Ag | Anordnung und Verfahren zum bidirektionalen Übertragen von Signalen bei einem Kraftfahrzeug |
FR2869839B1 (fr) | 2004-05-04 | 2006-07-07 | Johnson Controls Tech Co | Systeme de controle de la pression des pneumatiques des roues d'un vehicule automobile |
IT1393071B1 (it) * | 2008-10-24 | 2012-04-11 | Pirelli | Metodo e sistema per il controllo dell'usura degli pneumatici di un veicolo |
IT1393072B1 (it) * | 2008-10-24 | 2012-04-11 | Pirelli | Metodo e sistema per la segnalazione di una condizione di acquaplano di un pneumatico montato su un veicolo |
FR2955414B1 (fr) * | 2010-01-15 | 2012-02-03 | Johnson Controls Tech Co | Procede d'echange de signaux entre un capteur de pression de pneu et une unite centrale equipant un vehicule automobile. |
DE102010037510B4 (de) * | 2010-09-13 | 2016-08-18 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | Verfahren zum Zuordnen von Kennungen von Radelektroniken eines Reifendrucküberwachungssystems eines Fahrzeugs zu den Positionen der Räder an dem Fahrzeug |
KR101343168B1 (ko) * | 2010-12-31 | 2013-12-19 | 삼성전기주식회사 | 차량바퀴의 위치 자동인식장치 및 위치 자동인식방법 |
US8593273B2 (en) | 2011-02-07 | 2013-11-26 | Infineon Technologies Ag | Systems and methods for localization of tire pressure monitoring system wheel modules |
US8565967B2 (en) | 2011-12-21 | 2013-10-22 | Infineon Technologies Ag | Acceleration detection and angular position determination systems and methods in tire pressure monitoring systems |
JP5689105B2 (ja) * | 2012-11-09 | 2015-03-25 | 住友ゴム工業株式会社 | タイヤ空気圧低下検出装置、方法及びプログラム |
US9139054B2 (en) | 2013-08-22 | 2015-09-22 | Bendix Commercial Vehicle Systems Llc | Apparatus and method for configuring a tire pressure monitoring system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0806307A2 (fr) | 1996-05-09 | 1997-11-12 | Continental Aktiengesellschaft | Système de surveillance de pression des pneumatiques |
EP0997326A2 (fr) * | 1998-10-27 | 2000-05-03 | Continental Aktiengesellschaft | Procédé pour déterminer la position des roues dans un système de surveillance de pression des pneumatiques |
EP1052119A1 (fr) * | 1999-05-08 | 2000-11-15 | Continental Aktiengesellschaft | Procédé pour déterminer la position des roues dans un système de surveillance de pression des pneumatiques d'un véhicule |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030102966A1 (en) * | 1997-01-15 | 2003-06-05 | Boris Konchin | Tire pressure sensing system |
US6362732B1 (en) * | 1997-01-15 | 2002-03-26 | Algonquin Scientific Llc | Tire pressure sensing system |
US6445287B1 (en) * | 2000-02-28 | 2002-09-03 | Donnelly Corporation | Tire inflation assistance monitoring system |
US6631317B2 (en) * | 2001-10-01 | 2003-10-07 | Ford Global Technologies, Inc. | Attitude sensing system for an automotive vehicle |
US6900725B1 (en) * | 2002-08-07 | 2005-05-31 | Ford Global Technologies, Llc | Method and system for automatically extending a tire pressure monitoring system for an automotive vehicle to include auxiliary tires |
JP4050999B2 (ja) * | 2003-04-18 | 2008-02-20 | 太平洋工業株式会社 | タイヤ状態監視装置 |
DE102004064002B4 (de) * | 2004-08-04 | 2019-05-09 | Continental Automotive Gmbh | System zum Überwachen einer Sensorvorrichtung |
-
2001
- 2001-12-18 FR FR0116368A patent/FR2833523B1/fr not_active Expired - Fee Related
-
2002
- 2002-12-18 ES ES02804944T patent/ES2295459T3/es not_active Expired - Lifetime
- 2002-12-18 EP EP02804944A patent/EP1465782B1/fr not_active Expired - Fee Related
- 2002-12-18 DE DE60223409T patent/DE60223409T2/de not_active Expired - Lifetime
- 2002-12-18 US US10/498,715 patent/US7313953B2/en not_active Expired - Fee Related
- 2002-12-18 WO PCT/FR2002/004435 patent/WO2003051652A1/fr active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0806307A2 (fr) | 1996-05-09 | 1997-11-12 | Continental Aktiengesellschaft | Système de surveillance de pression des pneumatiques |
EP0997326A2 (fr) * | 1998-10-27 | 2000-05-03 | Continental Aktiengesellschaft | Procédé pour déterminer la position des roues dans un système de surveillance de pression des pneumatiques |
EP1052119A1 (fr) * | 1999-05-08 | 2000-11-15 | Continental Aktiengesellschaft | Procédé pour déterminer la position des roues dans un système de surveillance de pression des pneumatiques d'un véhicule |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2964345A1 (fr) * | 2010-09-07 | 2012-03-09 | Continental Automotive France | Procede d'affectation des roues d'un vehicule a leur localisation |
WO2012031655A1 (fr) * | 2010-09-07 | 2012-03-15 | Continental Automotive France | Procede d'affectation des roues d'un vehicule a leur localisation |
WO2012139711A1 (fr) * | 2011-04-14 | 2012-10-18 | Continental Automotive France | Procede de localisation de la position de roues d'un vehicule |
FR2974033A1 (fr) * | 2011-04-14 | 2012-10-19 | Continental Automotive France | Procede de localisation de la position de roues d'un vehicule |
KR20140023360A (ko) * | 2011-04-14 | 2014-02-26 | 콘티넨탈 오토모티브 프랑스 | 차량의 바퀴들의 위치를 로케이팅하는 방법 |
US10449810B2 (en) | 2011-04-14 | 2019-10-22 | Continental Automotive France | Method for locating the position of the wheels of a vehicle |
KR102072608B1 (ko) | 2011-04-14 | 2020-02-03 | 콘티넨탈 오토모티브 프랑스 | 차량의 바퀴들의 위치를 로케이팅하는 방법 |
EP2993064A1 (fr) * | 2014-09-03 | 2016-03-09 | Continental Automotive GmbH | Procédé et système pour déterminer un angle de rotation d'au moins une roue d'un véhicule |
US9835432B2 (en) | 2014-09-03 | 2017-12-05 | Continental Automotive Gmbh | Method and system for determining a rotation angle of at least one wheel of a vehicle |
Also Published As
Publication number | Publication date |
---|---|
FR2833523A1 (fr) | 2003-06-20 |
US20050150284A1 (en) | 2005-07-14 |
DE60223409T2 (de) | 2008-09-11 |
ES2295459T3 (es) | 2008-04-16 |
FR2833523B1 (fr) | 2006-11-17 |
EP1465782A1 (fr) | 2004-10-13 |
US7313953B2 (en) | 2008-01-01 |
DE60223409D1 (de) | 2007-12-20 |
EP1465782B1 (fr) | 2007-11-07 |
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