GB1505804A - Method and apparatus for measuring air pressure in pneumatic tyres - Google Patents
Method and apparatus for measuring air pressure in pneumatic tyresInfo
- Publication number
- GB1505804A GB1505804A GB8302/76A GB830276A GB1505804A GB 1505804 A GB1505804 A GB 1505804A GB 8302/76 A GB8302/76 A GB 8302/76A GB 830276 A GB830276 A GB 830276A GB 1505804 A GB1505804 A GB 1505804A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tyre
- antenna
- receiving antenna
- sensor unit
- fed
- 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.)
- Expired
Links
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000004907 flux Effects 0.000 abstract 1
- 230000001939 inductive effect Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L17/00—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies
-
- 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
- B60C23/0479—Communicating with external units being not part of the vehicle, e.g. tools for diagnostic, mobile phones, electronic keys or service stations
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
1505804 Measuring tyre pressures electrically CONSOLIDATED FREIGHTWAYS Inc 2 March 1976 08302/76 Heading G1N The pressure inside a pneumatic tyre 22, Fig. 3, is monitored by a transducer 20 located internally, comprising a coil on a toroidal, magnetostrictive core forming part of the tuning circuit of an oscillator which receives its power and transmits the measuring signal by inductive couplings. The power supply is derived from an RF oscillator contained in a box 34, Fig. 2, connected to a primary transmitting antenna 36 consisting of a flat coil in the roadway. The RF field produced is picked up by receiving antenna 38 forming part of the pressure sensor unit 21, and rectified to provide power for an oscillator whose frequency is determined by the inductance of element 20, which is varied by the internal tyre pressure acting through a diaphragm 70 on the toroidal core. The electronic components are formed on a semi-conductor wafer surrounded by antenna 38. The measuring signal is fed to secondary transmitting antenna 26 and picked up by receiving antenna 28 consisting of a second flat coil in the roadway, with its axis at 90 degrees to that of antenna 36. After passing through filters the measuring signal is fed to display devices 32. The pressure sensor unit 21 may be bonded to the inner wall of tyre 22, as shown in Fig. 3, embedded in the tyre casing Fig. 8 (not shown), incorporated into a repair plug inserted into the tyre side wall Fig. 7 (not shown), or formed as a freely rotatable sphere inside the tyre Fig. 9 (not shown). The antennae 28, 36 may be segmented and duplicated laterally to facilitate distinguishing between signals from multiple wheel assemblies, and each tyre may produce a coded identification signal. Power for the sensor unit 21 may alternatively be derived from the EMF induced in receiving antenna 38 during rotation as it cuts the flux of a magnet attached to the vehicle, especially for use with radial tyres with metal belts. The receiving antenna 28 may also be attached to the vehicle, and the signals from each tyre may be fed sequentially to display devices 32.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8302/76A GB1505804A (en) | 1976-03-02 | 1976-03-02 | Method and apparatus for measuring air pressure in pneumatic tyres |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8302/76A GB1505804A (en) | 1976-03-02 | 1976-03-02 | Method and apparatus for measuring air pressure in pneumatic tyres |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1505804A true GB1505804A (en) | 1978-03-30 |
Family
ID=9849921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8302/76A Expired GB1505804A (en) | 1976-03-02 | 1976-03-02 | Method and apparatus for measuring air pressure in pneumatic tyres |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1505804A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2325743A (en) * | 1997-05-30 | 1998-12-02 | Draegerwerk Ag | Replaceable sensor with wireless reading of stored information. |
WO2002086435A1 (en) * | 2001-04-19 | 2002-10-31 | Stiftung Caesar | Contactless magneto-elastic sensors |
WO2009033847A3 (en) * | 2007-09-10 | 2009-05-22 | Bosch Gmbh Robert | Sensor arrangement and method for operating a sensor arrangement |
US7679501B2 (en) | 2004-02-02 | 2010-03-16 | Michelin Recherche Et Technique S.A. | Remote interrogation of a vehicle wheel |
-
1976
- 1976-03-02 GB GB8302/76A patent/GB1505804A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2325743A (en) * | 1997-05-30 | 1998-12-02 | Draegerwerk Ag | Replaceable sensor with wireless reading of stored information. |
GB2325743B (en) * | 1997-05-30 | 1999-04-21 | Draegerwerk Ag | Sensor and measuring head |
WO2002086435A1 (en) * | 2001-04-19 | 2002-10-31 | Stiftung Caesar | Contactless magneto-elastic sensors |
US7679501B2 (en) | 2004-02-02 | 2010-03-16 | Michelin Recherche Et Technique S.A. | Remote interrogation of a vehicle wheel |
WO2009033847A3 (en) * | 2007-09-10 | 2009-05-22 | Bosch Gmbh Robert | Sensor arrangement and method for operating a sensor arrangement |
JP2011501248A (en) * | 2007-09-10 | 2011-01-06 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Sensor device and method of operating sensor device |
US8319659B2 (en) | 2007-09-10 | 2012-11-27 | Robert Bosch Gmbh | Sensor system and method for operating a sensor system |
CN101801692B (en) * | 2007-09-10 | 2013-03-27 | 罗伯特·博世有限公司 | Sensor arrangement and method for operating a sensor arrangement |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |