JPS5917127A - Display device for air pressure in tire - Google Patents

Display device for air pressure in tire

Info

Publication number
JPS5917127A
JPS5917127A JP57125746A JP12574682A JPS5917127A JP S5917127 A JPS5917127 A JP S5917127A JP 57125746 A JP57125746 A JP 57125746A JP 12574682 A JP12574682 A JP 12574682A JP S5917127 A JPS5917127 A JP S5917127A
Authority
JP
Japan
Prior art keywords
change
means
air pressure
signal
elements
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.)
Pending
Application number
JP57125746A
Inventor
Masaaki Katsumata
Takashi Kawakami
Original Assignee
Nissan Motor Co Ltd
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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP57125746A priority Critical patent/JPS5917127A/en
Publication of JPS5917127A publication Critical patent/JPS5917127A/en
Application status is Pending legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2208Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
    • H01Q1/2241Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in or for vehicle tyres
    • 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
    • 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
    • B60C23/0433Radio signals
    • B60C23/0447Wheel or tyre mounted circuits
    • B60C23/0449Passive transducers, e.g. using surface acoustic waves, backscatter technology or pressure sensitive resonators

Abstract

PURPOSE:To convert the change in the resonance frequency of a surface acoustic wave element to a change in air pressure with an arithmetic circuit and to display said change by detecting the change in the air pressure in a tire as a change in said resonance frequency. CONSTITUTION:The signal from a sweep oscillation means 15 is transmitted by a signal from a controller 23 via a transmission means 9 to the 1st and the 2nd surface acoustic wave elements 5, 7. When the elements 5, 7 resonate, energy consumption is induced by a resonance system constituted of said elements and a reception antenna 11, by which the signal level at the antenna 13 is decreased. The resonance point of the decrease in the level is detected with a detection means 17 and is fed to a controller 23. A counter 25 counts the frequency of the means 15 and inputs the same to memories 27, 29. The outputs of the memories are inputted to a subtractor and are fed to a pressure converter 33, by which the outputs are converted to the pressure value signal corresponding to the input frequency. As a result, a display means 21 receives the pressure value signal as the calculated result from an arithmetic means 19 and displays the prescribed air pressure.
JP57125746A 1982-07-21 1982-07-21 Display device for air pressure in tire Pending JPS5917127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57125746A JPS5917127A (en) 1982-07-21 1982-07-21 Display device for air pressure in tire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57125746A JPS5917127A (en) 1982-07-21 1982-07-21 Display device for air pressure in tire

Publications (1)

Publication Number Publication Date
JPS5917127A true JPS5917127A (en) 1984-01-28

Family

ID=14917773

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57125746A Pending JPS5917127A (en) 1982-07-21 1982-07-21 Display device for air pressure in tire

Country Status (1)

Country Link
JP (1) JPS5917127A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6274528A (en) * 1985-09-24 1987-04-06 Inoue Japax Res Inc Electric discharge machine
WO1988007941A1 (en) * 1987-04-16 1988-10-20 Consolidated Technology Pty. Ltd. Tyre deflation warning device
WO2001066367A1 (en) * 2000-03-06 2001-09-13 Siemens Aktiengesellschaft Product comprising a sensor and a surface wave element, and method and system for determining, from the sensor, a measured quantity that corresponds to a reactive resistance
WO2005052534A1 (en) * 2003-11-27 2005-06-09 Kyocera Corporation Pressure sensor device
WO2005052533A1 (en) * 2003-11-27 2005-06-09 Kyocera Corporation Pressure sensor device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6274528A (en) * 1985-09-24 1987-04-06 Inoue Japax Res Inc Electric discharge machine
WO1988007941A1 (en) * 1987-04-16 1988-10-20 Consolidated Technology Pty. Ltd. Tyre deflation warning device
WO2001066367A1 (en) * 2000-03-06 2001-09-13 Siemens Aktiengesellschaft Product comprising a sensor and a surface wave element, and method and system for determining, from the sensor, a measured quantity that corresponds to a reactive resistance
US6813947B2 (en) 2000-03-06 2004-11-09 Siemens Aktiengesellschaft Product having a sensor and a surface acoustic wave element, as well as a method and arrangement for determining a measurement variable, which corresponds to a reactance, by a sensor
WO2005052534A1 (en) * 2003-11-27 2005-06-09 Kyocera Corporation Pressure sensor device
WO2005052533A1 (en) * 2003-11-27 2005-06-09 Kyocera Corporation Pressure sensor device
US7353710B2 (en) 2003-11-27 2008-04-08 Kyocera Corporation Pressure sensor device with surface acoustic wave elements
US7392706B2 (en) 2003-11-27 2008-07-01 Kyocera Corporation Pressure sensor device

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