WO1987003544A1 - Procede de mesure a distance de la pression des pneumatiques de vehicules - Google Patents

Procede de mesure a distance de la pression des pneumatiques de vehicules Download PDF

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Publication number
WO1987003544A1
WO1987003544A1 PCT/CH1986/000171 CH8600171W WO8703544A1 WO 1987003544 A1 WO1987003544 A1 WO 1987003544A1 CH 8600171 W CH8600171 W CH 8600171W WO 8703544 A1 WO8703544 A1 WO 8703544A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
vehicle
coupling
coils
sensor
Prior art date
Application number
PCT/CH1986/000171
Other languages
German (de)
English (en)
Inventor
Wilfried Schoeps
Original Assignee
Wilfried Schoeps
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 Wilfried Schoeps filed Critical Wilfried Schoeps
Publication of WO1987003544A1 publication Critical patent/WO1987003544A1/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
    • B60C23/0427—Near field transmission with inductive or capacitive coupling means
    • B60C23/0428—Near field transmission with inductive or capacitive coupling means using passive wheel mounted resonance circuits

Definitions

  • the invention relates to a method for the contactless measurement of the pressure of vehicle tires.
  • the measurement is carried out with a sensor on the wheel.
  • the sensor essentially consists of an electrical resonant circuit whose operating frequency is proportional to the pressure in the tire.
  • the working frequency is set by means of a pressure-sensitive membrane.
  • the pressure information is transmitted from the sensor to the vehicle without contact over a certain distance by means of an electromagnetic coupling to a coupling coil attached to the vehicle.
  • the vehicle contains suitable electronic devices for evaluating, displaying, alarming and regulating the air pressure.
  • the innovation consists in the fact that so far no methods are known which allow a non-contact, continuous measurement of the tire pressure, both during standstill and while driving, with the exception of the use of high-frequency transmitters built into the vehicle wheel.
  • the use of HF transmitters has the decisive disadvantage that several vehicles can interfere with one another, or that the system can interfere with other radio services or can be disturbed by them.
  • the invention has set itself the goal of being able to easily and inexpensively check the functional state of vehicle tires before or during the journey. So you can, for example Before landing an aircraft, check whether all wheels have the prescribed air pressure.
  • sensor A is attached to the wheel or an integrated part of the same. It is located at a certain distance in front of the coupling coil 3, which is firmly on
  • Vehicle is attached. This arrangement ensures a permanent transmission of information, regardless of the position or the operating mode (standstill / drive) of the wheel.
  • Fig. 2 is the electrical arrangement according to claim A and
  • Sensor A consists of an oscillating circuit
  • Coil 4a is in the upper mentioned distance from
  • Coupling coil 3 which is symbolized as the electromagnetic coupling k.
  • the sensor A is connected via the coupling k
  • Coupling coil 3 excited to a damped vibration.
  • Coupling coil The damped oscillation of the excited sensor is transferred to the amplifier 5 via the switch 2.
  • the frequency of the vibration is measured with the frequency meter 6 and displayed with a suitable display device 7.
  • the display is proportional to the tire pressure.
  • a frequency variable Vibration generator 1b generates a frequency that is close to the expected operating frequency of sensor A.
  • the frequency and the amplitude of the vibration generator 1b are amplified in the amplifier 5 and evaluated in the frequency meter 6. From the frequency meter
  • the vibration generator 1b is automatically readjusted until the frequency of the vibration generator 6 then corresponds to that of the sensor A.
  • Display 7 is displayed. The display is proportional to the tire pressure.
  • the vehicle wheel also contains an active one
  • Vibration generator 8 with a suitable auxiliary energy source 9 Vibration generator 8 with a suitable auxiliary energy source 9.
  • the information is transmitted via the coupling k to the coupling coil 3, amplified by the amplifier 5, with the frequency meter
  • Fig. 5 corresponds functionally to Fig. A with the addition that the
  • Auxiliary energy source 9 is replaced by a further coupling device 10, 11 with the coupling k2 and is fed from the vehicle.
  • the couplings kl and k2 can be used with a suitable one
  • the information about the tire pressure can be used not only for display purposes, but also for alarms when the pressure is too low or too high and for

Abstract

Le procédé permet de mesurer continuellement et à distance la pression des pneumatiques de véhicules, indépendamment du fait que le véhicule, ou ses roues, soient immobiles ou en mouvement. Il est applicable à toutes sortes de pneumatiques et à tous les types de véhicules routiers, sur rails ou les avions. A l'aide du procédé décrit, on peut obtenir à chaque instant des informations sur la pression correcte ou anormale des pneumatiques d'une manière simple et économique. Ceci constitue un point important de la sécurité avant la mise en service ou durant la marche du véhicule.
PCT/CH1986/000171 1985-12-13 1986-12-08 Procede de mesure a distance de la pression des pneumatiques de vehicules WO1987003544A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5306/85-1 1985-12-13
CH530685 1985-12-13

Publications (1)

Publication Number Publication Date
WO1987003544A1 true WO1987003544A1 (fr) 1987-06-18

Family

ID=4291381

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1986/000171 WO1987003544A1 (fr) 1985-12-13 1986-12-08 Procede de mesure a distance de la pression des pneumatiques de vehicules

Country Status (3)

Country Link
EP (1) EP0250469A1 (fr)
AU (1) AU6629886A (fr)
WO (1) WO1987003544A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1150849B1 (fr) * 1999-02-11 2003-05-07 Emtop Limited Appareil et procede de transmission de signaux, appareil de mesurage et appareil de detection de la pression des pneus incorporant un tel appareil de transmission des signaux
CN103068600A (zh) * 2010-08-09 2013-04-24 株式会社普利司通 轮胎内压测量系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2274557A (en) * 1940-07-10 1942-02-24 Morgan Raymond Electric gauge
GB2065896A (en) * 1979-12-19 1981-07-01 Bosch Gmbh Robert Apparatus for Continuously Monitoring the Air Pressure in Vehicle Tyres
EP0042790A1 (fr) * 1980-06-19 1981-12-30 Societe Anonyme De Telecommunications (S.A.T.) Dispositif pour mesurer la pression de pneumatiques notamment pour aéronefs
EP0045401A2 (fr) * 1980-08-05 1982-02-10 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Méthode de transmission de valeurs de mesure variables à partir de roues de véhicules
US4334428A (en) * 1978-05-04 1982-06-15 Fima Raoul G Apparatus for indicating parameters sensed on a rotatable wheel
EP0108176A1 (fr) * 1982-11-05 1984-05-16 Philip Elliot Galasko Détection d'une condition de sous-pression d'un pneumatique de véhicule

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2274557A (en) * 1940-07-10 1942-02-24 Morgan Raymond Electric gauge
US4334428A (en) * 1978-05-04 1982-06-15 Fima Raoul G Apparatus for indicating parameters sensed on a rotatable wheel
GB2065896A (en) * 1979-12-19 1981-07-01 Bosch Gmbh Robert Apparatus for Continuously Monitoring the Air Pressure in Vehicle Tyres
EP0042790A1 (fr) * 1980-06-19 1981-12-30 Societe Anonyme De Telecommunications (S.A.T.) Dispositif pour mesurer la pression de pneumatiques notamment pour aéronefs
EP0045401A2 (fr) * 1980-08-05 1982-02-10 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Méthode de transmission de valeurs de mesure variables à partir de roues de véhicules
EP0108176A1 (fr) * 1982-11-05 1984-05-16 Philip Elliot Galasko Détection d'une condition de sous-pression d'un pneumatique de véhicule

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1150849B1 (fr) * 1999-02-11 2003-05-07 Emtop Limited Appareil et procede de transmission de signaux, appareil de mesurage et appareil de detection de la pression des pneus incorporant un tel appareil de transmission des signaux
US6609419B1 (en) 1999-02-11 2003-08-26 Emtop Limited Signal transmission in a tire pressure sensing system
CN103068600A (zh) * 2010-08-09 2013-04-24 株式会社普利司通 轮胎内压测量系统
EP2604450A1 (fr) * 2010-08-09 2013-06-19 Bridgestone Corporation Système de mesure de pression interne d'un pneu
EP2604450A4 (fr) * 2010-08-09 2014-01-01 Bridgestone Corp Système de mesure de pression interne d'un pneu
US8910513B2 (en) 2010-08-09 2014-12-16 Birdgestone Corporation Tire inner pressure measurement system
CN103068600B (zh) * 2010-08-09 2015-06-10 株式会社普利司通 轮胎内压测量系统

Also Published As

Publication number Publication date
AU6629886A (en) 1987-06-30
EP0250469A1 (fr) 1988-01-07

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