DE2824992A1 - Automatic warning system for tyre pressure - includes resonant circuit on tyre valve and tuned detector circuit on chassis - Google Patents

Automatic warning system for tyre pressure - includes resonant circuit on tyre valve and tuned detector circuit on chassis

Info

Publication number
DE2824992A1
DE2824992A1 DE19782824992 DE2824992A DE2824992A1 DE 2824992 A1 DE2824992 A1 DE 2824992A1 DE 19782824992 DE19782824992 DE 19782824992 DE 2824992 A DE2824992 A DE 2824992A DE 2824992 A1 DE2824992 A1 DE 2824992A1
Authority
DE
Grant status
Application
Patent type
Prior art keywords
circuit
tyre
chassis
resonant circuit
warning system
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.)
Withdrawn
Application number
DE19782824992
Other languages
German (de)
Inventor
Akira Matsuda
Makoto Tanaka
Junichi Murata
Shigeo Yasuda
Hiroshi Nishino
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.)
Mitaka Instrument Co Ltd
Bridgestone Corp
Original Assignee
Mitaka Instrument Co Ltd
Bridgestone Corp
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

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00Devices 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, of tanks; Tyre cooling arrangements
    • B60C23/02Signalling devices actuated by tyre pressure
    • B60C23/04Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0491Constructional details of means for attaching the control device
    • B60C23/0498Constructional details of means for attaching the control device for rim attachments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00Devices 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, of tanks; Tyre cooling arrangements
    • B60C23/02Signalling devices actuated by tyre pressure
    • B60C23/04Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408Signalling 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
    • B60C23/0422Signalling 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
    • B60C23/0427Near field transmission with inductive or capacitive coupling means
    • B60C23/0428Near field transmission with inductive or capacitive coupling means using passive wheel mounted resonance circuits

Abstract

The tyre pressure monitor has a resonant circuit(5) on the wheel, operated when the tyre pressure falls below the set value. This provides a strong signal which is detected by an oscillator circuit(10) on the chassis, which in turn operates the warning circuit (12) on the dashboard. The system is highly sensitive and is unaffected by outside interference, such as from the ignition circuit. The resonant circuit is tuned to the oscillator.
DE19782824992 1978-06-07 1978-06-07 Automatic warning system for tyre pressure - includes resonant circuit on tyre valve and tuned detector circuit on chassis Withdrawn DE2824992A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782824992 DE2824992A1 (en) 1978-06-07 1978-06-07 Automatic warning system for tyre pressure - includes resonant circuit on tyre valve and tuned detector circuit on chassis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782824992 DE2824992A1 (en) 1978-06-07 1978-06-07 Automatic warning system for tyre pressure - includes resonant circuit on tyre valve and tuned detector circuit on chassis

Publications (1)

Publication Number Publication Date
DE2824992A1 true true DE2824992A1 (en) 1979-12-13

Family

ID=6041266

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782824992 Withdrawn DE2824992A1 (en) 1978-06-07 1978-06-07 Automatic warning system for tyre pressure - includes resonant circuit on tyre valve and tuned detector circuit on chassis

Country Status (1)

Country Link
DE (1) DE2824992A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3023994A1 (en) * 1979-07-03 1981-01-15 Bridgestone Tire Co Ltd A pressure switch resonators for a device for detecting a pressure drop in the tire chamber of a vehicle wheel
DE3104013A1 (en) * 1980-02-07 1982-02-25 Meisei Electric Co Ltd System for detecting an abnormal internal tyre pressure
DE3037722A1 (en) * 1980-10-06 1982-05-13 Bosch Gmbh Robert Tyre-pressure monitoring system for vehicle - has free-running oscillator coupled to evaluator circuit
FR2560555A1 (en) * 1984-03-03 1985-09-06 Porsche Ag A thermal insulation of an electronic transmitter for the tire pressure control system
EP0301443A1 (en) * 1987-07-23 1989-02-01 Bridgestone Corporation Tire inspection device
DE3941509A1 (en) * 1988-12-16 1990-06-21 Bridgestone Corp Air pressure warning appts. for vehicle tyres - has wheel-mounted resonator output decoded for two levels, with logic evaluation on vehicle

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374460A (en) * 1964-04-06 1968-03-19 Cie Generale Des Establissment System for signaling conditions on relatively moving members of a vehicle
DE2310881A1 (en) * 1972-03-08 1973-10-04 Pirelli An apparatus for displaying a physical quantity that is measured on a rotating wheel
DE2338885A1 (en) * 1972-08-03 1974-02-14 Lucas Electrical Co Ltd Reifendruckueberwachungssystem
US3810090A (en) * 1972-09-15 1974-05-07 Avco Corp Pneumatic tire low pressure monitoring and warning system
DE2412580A1 (en) * 1973-03-19 1974-09-26 Nissan Motor motor vehicle tires for Ueberwachungsanordnung
US3938077A (en) * 1973-11-28 1976-02-10 Bridgestone Tire Company, Ltd. Alarm device for continually indicating the state of air pressure in a plurality of tires
DE2623338A1 (en) * 1975-05-27 1976-12-09 Firestone Tire & Rubber Co Apparatus for displaying an abnormal state of a drehkoerpers
DE2549946A1 (en) * 1975-11-07 1977-05-18 Bosch Gmbh Robert Device for druckueberwachung in tires for vehicle wheels

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374460A (en) * 1964-04-06 1968-03-19 Cie Generale Des Establissment System for signaling conditions on relatively moving members of a vehicle
DE2310881A1 (en) * 1972-03-08 1973-10-04 Pirelli An apparatus for displaying a physical quantity that is measured on a rotating wheel
DE2338885A1 (en) * 1972-08-03 1974-02-14 Lucas Electrical Co Ltd Reifendruckueberwachungssystem
US3810090A (en) * 1972-09-15 1974-05-07 Avco Corp Pneumatic tire low pressure monitoring and warning system
DE2412580A1 (en) * 1973-03-19 1974-09-26 Nissan Motor motor vehicle tires for Ueberwachungsanordnung
US3938077A (en) * 1973-11-28 1976-02-10 Bridgestone Tire Company, Ltd. Alarm device for continually indicating the state of air pressure in a plurality of tires
DE2623338A1 (en) * 1975-05-27 1976-12-09 Firestone Tire & Rubber Co Apparatus for displaying an abnormal state of a drehkoerpers
DE2549946A1 (en) * 1975-11-07 1977-05-18 Bosch Gmbh Robert Device for druckueberwachung in tires for vehicle wheels

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3023994A1 (en) * 1979-07-03 1981-01-15 Bridgestone Tire Co Ltd A pressure switch resonators for a device for detecting a pressure drop in the tire chamber of a vehicle wheel
DE3023994C2 (en) * 1979-07-03 1984-03-15 Bridgestone Tire Co. Ltd., Tokyo, Jp
DE3104013A1 (en) * 1980-02-07 1982-02-25 Meisei Electric Co Ltd System for detecting an abnormal internal tyre pressure
DE3037722A1 (en) * 1980-10-06 1982-05-13 Bosch Gmbh Robert Tyre-pressure monitoring system for vehicle - has free-running oscillator coupled to evaluator circuit
FR2560555A1 (en) * 1984-03-03 1985-09-06 Porsche Ag A thermal insulation of an electronic transmitter for the tire pressure control system
US4630471A (en) * 1984-03-03 1986-12-23 Dr. Ing.H.C.F Porsche Aktiengesellschaft Temperature resistant tire pressure control device
EP0301443A1 (en) * 1987-07-23 1989-02-01 Bridgestone Corporation Tire inspection device
DE3941509A1 (en) * 1988-12-16 1990-06-21 Bridgestone Corp Air pressure warning appts. for vehicle tyres - has wheel-mounted resonator output decoded for two levels, with logic evaluation on vehicle

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Legal Events

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