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WO1989005238A1 - Device for monitoring vehicle tyres - Google Patents

Device for monitoring vehicle tyres Download PDF

Info

Publication number
WO1989005238A1
WO1989005238A1 PCT/EP1988/001046 EP8801046W WO8905238A1 WO 1989005238 A1 WO1989005238 A1 WO 1989005238A1 EP 8801046 W EP8801046 W EP 8801046W WO 8905238 A1 WO8905238 A1 WO 8905238A1
Authority
WO
WIPO (PCT)
Prior art keywords
wheel
sensors
measured values
processor
actuators
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/EP1988/001046
Other languages
German (de)
French (fr)
Inventor
Gerhard KÄLBERER
Hans Spies
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.)
Airbus Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm AG
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 Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Publication of WO1989005238A1 publication Critical patent/WO1989005238A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/02—Tyres
    • G01M17/025—Tyres using infrasonic, sonic or ultrasonic vibrations
    • 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
    • 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
    • B60C23/062—Frequency spectrum analysis of wheel speed signals, e.g. using Fourier transformation
    • 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
    • B60C23/20—Devices for measuring or signalling tyre temperature only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/02—Tyres

Definitions

  • the invention relates to a device for checking vehicle maturity according to the preamble of patent claim 1.
  • the object of the invention is to provide a device for the tire control which responds not only to air pressure differences, but also to other loads on the tires, such as poor wheel balancing, overloading and much more.
  • FIG. 1 shows a block diagram of an embodiment of the system integrated in the vehicle
  • Fig. 3 shows a signal processing and transmission type.
  • Microphones 1 to 4, 101 and 102 are attached to the frame of the vehicle in the vicinity of each wheel and / or structure-borne noise sensors 1 to 4, 104 with the respective preamplifiers 101 to 104a.
  • sensors 111 can measure the temperature at a distance from the tires.
  • the respective speeds 1 to 4 in 105 can also be determined from the transmission or the ABS.
  • a spectrum analyzer 107 either directly or via an electrical or optical interface 106. This leads the sound spectra obtained with or without speed information and / or induced structure-borne sound spectra of each wheel to the evaluation processor 108.
  • a test device 204 can also be installed in the hub 201 with a rim 202 or a further rim 203 of the vehicle in accordance with FIG. 2.
  • this test device supplies the energy supply when driving via a generator 301, which at the same time provides information about the real rotational speed to the microprocessor 304. It can be used directly on the tire or rim, e.g. Sensors for structure-borne noise 302 and temperature 303 can be attached. The information is preselected via the microprocessor 304 and transmitted via an IR diode 305 to one or more receiving diodes 306.
  • This information can be evaluated in the overall system 307 according to FIG. 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Tires In General (AREA)

Abstract

A device for monitoring vehicle tires, in particular pneumatic tyres, when the vehicle is moving comprises at least one measuring sensor for each wheel to be monitored. Sonic sensors (103, 104) and/or temperature sensors (111) record together changes in the corresponding measured values in the tyre/wheel by temporal comparison or by comparison of these measured values and supply them to a measurement signal processing and evaluation processor (108) which sends a warning to a display unit (109) or sends controlled pulses to actuators if the permissible limits of deviation are exceeded.

Description

Vorrichtung zur Kontrolle von Fahrzeugreifen Device for checking vehicle tires

Die Erfindung betrifft eine Vorrichtung zur Kontrolle von Fahrzeugreifeπ gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for checking vehicle maturity according to the preamble of patent claim 1.

Um die Sicherheit und Einsatzbereitschaft von Fahrzeugbereifung zu über¬ prüfen und zu gewährleisten, sind viele Konstruktionen und Verfahren be¬ kannt geworden, bei denen insbesondere der Reifenhaftdruck gemessen und eingestellt werden kann. Bis heute haben sich diese Verfahren nicht be¬ sonders durchgesetzt, weil der Luftdruck nur ein Kriterium bei der Beur¬ teilung der Betriebssicherheit darstellt.In order to check and ensure the safety and readiness for use of vehicle tires, many constructions and methods have become known in which in particular the tire pressure can be measured and adjusted. To date, these methods have not been particularly successful because the air pressure is only one criterion when assessing operational safety.

Aufgabe der Erfindung ist es eine Vorrichtung zur Reifenkontrone zu schaffen, die nicht nur auf Luftdruckunterschiede anspricht, sondern auch auf andere Belastungen der Reifen, wie schlechte Auswuchtung der Räder, Überlastung u.v.a.m..The object of the invention is to provide a device for the tire control which responds not only to air pressure differences, but also to other loads on the tires, such as poor wheel balancing, overloading and much more.

Gelöst wird diese Aufgabe mit den im Kennzeichen des Patentanspruchs 1 angegebenen Mitteln.This object is achieved with the means specified in the characterizing part of patent claim 1.

Aus- und Weiterbildungen der Erfindung sind weiteren Ansprüchen, der Be¬ schreibung und Zeichnung von Ausführungsbeispielen zu entnehmen.Further and further developments of the invention can be found in the claims, the description and the drawing of exemplary embodiments.

Im Gegensatz zu einer reinen Kontrolle des Luftdruckes (z.B. DE 34 12 949 A 1) ist mit der erfindungsgemäßen Überwachungsvorrichtung durch prozessorgesteuerte Auswertung verschiedener Informationen eine sichere Erkennung und Warnsignalgebung möglich bei:In contrast to a pure control of the air pressure (e.g. DE 34 12 949 A 1), with the monitoring device according to the invention, reliable detection and warning signaling is possible through processor-controlled evaluation of various information in the case of:

Überbeladung ungleicher Lastverteilung schlechter Auswuchtung ungünstiger Belastung in ParkstellungOverloading of uneven load distribution, poor balancing, unfavorable load in park position

StoßdämpferschädenDamage to shock absorbers

Federbruch bzw. -ermüdungSpring breakage or fatigue

Rahmenverwindungen Reifenpannen, -platzen, -ablösenFrame twists Tire punctures, bursts, and detachments

AchsbruchAxle break

RadlagerschadenWheel bearing damage

Bremsschaden ungleicher Reifenabnützung.Brake damage caused by uneven tire wear.

Selbstverständlich werden diese Belastungen mit den erfindungsgemäßen Mitteln zusätzlich zu Luftdruckunterschieden erfaßbar, ohne hierauf be¬ schränkt zu sein. Auch andere statische oder dynamische Effekte können erkannt und ihre Auswirkungen vermindert oder ganz verhindert werden.Of course, these loads can be determined with the means according to the invention in addition to differences in air pressure, without being limited thereto. Other static or dynamic effects can also be recognized and their effects reduced or completely prevented.

Ausführungsbeispiele der Erfindung sind in den beigefügten Zeichnungen rein schematisch dargestellt. Es zeigen:Embodiments of the invention are shown purely schematically in the accompanying drawings. Show it:

Fig. 1 ein Blockschaltbild einer Ausführungsform des im Fahrzeug inte¬ grierten Systems;1 shows a block diagram of an embodiment of the system integrated in the vehicle;

Fig. 2 eine Einzelheit an einem Rad;2 shows a detail on a wheel;

Fig. 3 eine Signalverarbeitungs- und Übertragungsart.Fig. 3 shows a signal processing and transmission type.

Entsprechend Fig. 1 sind z.B. am Rahmen des Fahrzeuges Mikrophone 1 bis 4, 101 und 102 in der Nähe jedes Rades angebracht und/oder Körperschall- sensoren 1 bis 4, 104 mit den jeweiligen Vorverstärkern 101 bis 104a. Darüberhinaus kann über Sensoren 111 eine Temperaturmessung auf Abstand an den Reifen erfolgen.1, e.g. Microphones 1 to 4, 101 and 102 are attached to the frame of the vehicle in the vicinity of each wheel and / or structure-borne noise sensors 1 to 4, 104 with the respective preamplifiers 101 to 104a. In addition, sensors 111 can measure the temperature at a distance from the tires.

Aus dem Getriebe oder dem ABS können noch die jeweiligen Drehzahlen 1 bis 4 in 105 ermittelt werden.The respective speeds 1 to 4 in 105 can also be determined from the transmission or the ABS.

Alle diese Informationen gehen entweder direkt oder über eine elektri¬ sche oder optische Schnittstelle 106 einem Spektrumanalyser 107 zu. Die¬ ser führt die ohne oder mit Drehzahlinformation gewonnenen Schallspek¬ tren und/oder induzierten Körperschallspektren jedes Rades dem Auswerte¬ prozessor 108 zu. In diesen Auswerteprozessor werden die Spektren der Räder untereinander und/oder mit der gespeicherten Vorgeschichte vergli¬ chen. Dasjenige Rad mit einem defekten, fehlerhaften oder sonstwie an¬ dersartigem Reifen wird identifiziert und das Ergebnis kommt beim Fahrer als Warnung zur Anzeige 109. Ansonsten können über die so gewonnenen In¬ formationen auch Aktuatoren 110, wie z.B. die Einleitung einer Reifen¬ lösung, betätigt werden.All this information is sent to a spectrum analyzer 107 either directly or via an electrical or optical interface 106. This leads the sound spectra obtained with or without speed information and / or induced structure-borne sound spectra of each wheel to the evaluation processor 108. The spectra of the Compare wheels with one another and / or with the stored history. The wheel with a defective, defective or other type of tire is identified and the result is displayed to the driver as a warning 109. Otherwise, actuators 110, such as the initiation of a tire solution, can also be actuated via the information obtained in this way become.

Neben dieser Messung von Größen durch Sensoren am Aufbau kann entspre¬ chend Fig. 2 auch ein Testgerät 204 in die Nabe 201 mit einer Felge 202 bzw. einer weiteren Felge 203 des Fahrzeuges eingebaut werden.In addition to this measurement of sizes by sensors on the body, a test device 204 can also be installed in the hub 201 with a rim 202 or a further rim 203 of the vehicle in accordance with FIG. 2.

Dieses Testgerät liefert über eine exzentrische Masse die Energieversor¬ gung bei der Fahrt über einen Generator 301, der zugleich eine Informa¬ tion über die echte Drehzahl an den Mikroprozessor 304 abgibt. Es können damit direkt am Reifen oder der Felge z.B. Sensoren für Körperschall 302 und Temperatur 303 angebracht werden. Die Information wird über den Mikroprozessor 304 vorselektiert und über eine IR-Diode 305 einer oder mehreren Empfangsdioden 306 übermittelt.Via an eccentric mass, this test device supplies the energy supply when driving via a generator 301, which at the same time provides information about the real rotational speed to the microprocessor 304. It can be used directly on the tire or rim, e.g. Sensors for structure-borne noise 302 and temperature 303 can be attached. The information is preselected via the microprocessor 304 and transmitted via an IR diode 305 to one or more receiving diodes 306.

Diese Information kann im Gesamtsystem 307 entsprechend Fig. 1 ausgewer¬ tet werden.This information can be evaluated in the overall system 307 according to FIG. 1.

Abwandlungen der einzelnen Ausführungsbeispiele können selbstverständ¬ lich vorgenommen werden, ohne hierdurch den Rahmen der Erfindung zu ver¬ lassen, wie sie insbesondere in den Ansprüchen gekennzeichnet ist. Modifications of the individual exemplary embodiments can, of course, be made without thereby leaving the scope of the invention, as is particularly characterized in the claims.

Claims

Patentansprüche Claims 1. Vorrichtung zur Kontrolle von Fahrzeugreifen, insbesondere Luft¬ reifen, während der Fahrt mit wenigstens einem Meßfühler je zu über¬ wachendem Rad, gelennzeichnet durch SchallSensoren und/ oder Tempera¬ tursensoren, die Veränderungen diesbezüglicher Meßwerte am Reifen/Rad durch zeitlichen Vergleich oder Vergleich dieser Meßwerte untereinander erfassen und einem Meßsignal-Verarbeitungs- und -Auswerteprozessor (108) zuführen, der bei Überschreiten bestimmter Grenzen zulässiger Abweichun¬ gen eine Warninformation an eine Anzeigeeinheit (109) oder Steuerimpulse an Aktuatoren abgibt.1. Device for checking vehicle tires, in particular pneumatic tires, while driving with at least one sensor for each wheel to be monitored, characterized by sound sensors and / or temperature sensors, the changes in measured values in this regard on the tire / wheel by means of a time comparison or comparison record these measured values with one another and feed them to a measurement signal processing and evaluation processor (108) which, when certain limits of permissible deviations are exceeded, issues warning information to a display unit (109) or control pulses to actuators. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß in der Radnabe (201) oder am Rahmen des Fahrzeuges in der unmittelbaren Nähe jeden Rades Mikrophone (101 und 102) und/oder Körperschallsensoren (103 und 104) und/oder Temperatursensoren (111) angeordnet sind.2. Device according to claim 1, characterized in that in the wheel hub (201) or on the frame of the vehicle in the immediate vicinity of each wheel microphones (101 and 102) and / or structure-borne noise sensors (103 and 104) and / or temperature sensors (111) are arranged. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zusätzliche Raddrehzahlen insbesondere von den Drehzahlgebern (105) eines vorhandenen ABS-Systems als Meßwerte erfaßt zu Signalen verarbei¬ tet und ausgewertet werden (in 208).3. Device according to claim 1 or 2, characterized in that additional wheel speeds, in particular detected by the speed sensors (105) of an existing ABS system as measured values, processed and evaluated to signals (in 208). 4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch ge¬ kennzeichnet, daß mit den Sensoren und dem Prozessor (108) eine elek¬ trische oder optische Schnittstelle (106) und ein Spektrumsanalysator (107) verknüpft sind.4. Device according to one of the preceding claims, characterized ge indicates that with the sensors and the processor (108) an electrical or optical interface (106) and a spectrum analyzer (107) are linked. 5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch ge¬ kennzeichnet, daß die Nutzsignale am Ausgang des Prozessors (304) über einen IR-Sender (305) einem oder mehreren Empfängern (306) übermittelt werden an die Anzeigeeinheit oder die Aktuatoren. 5. Device according to one of the preceding claims, characterized ge indicates that the useful signals at the output of the processor (304) via an IR transmitter (305) one or more receivers (306) are transmitted to the display unit or the actuators.
PCT/EP1988/001046 1987-12-10 1988-11-18 Device for monitoring vehicle tyres Ceased WO1989005238A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3741818.1 1987-12-10
DE19873741818 DE3741818C1 (en) 1987-12-10 1987-12-10 Device for checking vehicle tires

Publications (1)

Publication Number Publication Date
WO1989005238A1 true WO1989005238A1 (en) 1989-06-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1988/001046 Ceased WO1989005238A1 (en) 1987-12-10 1988-11-18 Device for monitoring vehicle tyres

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WO (1) WO1989005238A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4009540A1 (en) * 1990-03-24 1991-09-26 Teves Gmbh Alfred TIRE PRESSURE MONITORING METHOD AND SYSTEM
EP0578826B1 (en) * 1991-11-11 1998-07-08 Denso Corporation Tire air pressure detecting device using a resonance frequency
DE19618659B4 (en) * 1996-05-09 2004-10-28 Continental Aktiengesellschaft Air pressure control system
DE19618658A1 (en) * 1996-05-09 1997-11-13 Continental Ag Air pressure control system
JP3300601B2 (en) * 1996-05-23 2002-07-08 トヨタ自動車株式会社 Tire pressure detector
US6381547B1 (en) * 2000-06-12 2002-04-30 Foster-Miller, Inc. Tire defect detection system and method
US20050076987A1 (en) * 2003-10-09 2005-04-14 O'brien George Phillips Acoustic signal monitoring system for a tire
DE102018219669A1 (en) * 2018-11-16 2020-05-20 Zf Friedrichshafen Ag Method and system for determining tire parameters of a vehicle
DE102022109503A1 (en) 2022-04-20 2023-10-26 Audi Aktiengesellschaft Tire damage detection device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2321119A1 (en) * 1975-08-14 1977-03-11 Hofmann Maschf Geb PROCEDURE AND INSTALLATION FOR VERIFYING THE UNIFORMITY OF ROTATING BODIES, IN PARTICULAR TIRES FOR MOTOR VEHICLES
EP0022096A2 (en) * 1979-04-03 1981-01-07 Brajnandan Sinha Device for indicating air pressure in vehicle tires
GB2088607A (en) * 1980-11-20 1982-06-09 Dunlop Ltd Failure warning systems
EP0055297A1 (en) * 1980-03-26 1982-07-07 Kawasaki Steel Corporation Monitoring device for a rotary machine
DE3236520A1 (en) * 1982-10-02 1984-04-05 Robert Bosch Gmbh, 7000 Stuttgart Device for indicating the state of vehicle tyres
US4695823A (en) * 1984-04-27 1987-09-22 Vernon Roger W Vehicle tire monitoring apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7902187L (en) * 1979-03-12 1980-09-13 Siemens Elema Ab DEVICE FOR MONITORING OF RING PRESSURE WHEELS ON A VEHICLE
DE3412949A1 (en) * 1984-04-06 1985-10-17 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart DEVICE FOR CONTROLLING THE AIR PRESSURE OF VEHICLE TIRES
DE3446248A1 (en) * 1984-12-19 1986-06-19 Robert Bosch Gmbh, 7000 Stuttgart SENSOR FOR MEASURING PHYSICAL SIZES AND METHOD FOR ADJUSTING THE SENSOR

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2321119A1 (en) * 1975-08-14 1977-03-11 Hofmann Maschf Geb PROCEDURE AND INSTALLATION FOR VERIFYING THE UNIFORMITY OF ROTATING BODIES, IN PARTICULAR TIRES FOR MOTOR VEHICLES
EP0022096A2 (en) * 1979-04-03 1981-01-07 Brajnandan Sinha Device for indicating air pressure in vehicle tires
EP0055297A1 (en) * 1980-03-26 1982-07-07 Kawasaki Steel Corporation Monitoring device for a rotary machine
GB2088607A (en) * 1980-11-20 1982-06-09 Dunlop Ltd Failure warning systems
DE3236520A1 (en) * 1982-10-02 1984-04-05 Robert Bosch Gmbh, 7000 Stuttgart Device for indicating the state of vehicle tyres
US4695823A (en) * 1984-04-27 1987-09-22 Vernon Roger W Vehicle tire monitoring apparatus

Also Published As

Publication number Publication date
DE3741818C1 (en) 1989-05-11

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