US20040021559A1 - Electronics device for a tire - Google Patents

Electronics device for a tire Download PDF

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Publication number
US20040021559A1
US20040021559A1 US10/243,221 US24322102A US2004021559A1 US 20040021559 A1 US20040021559 A1 US 20040021559A1 US 24322102 A US24322102 A US 24322102A US 2004021559 A1 US2004021559 A1 US 2004021559A1
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US
United States
Prior art keywords
tire
antenna
shaped
electronics device
wire
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.)
Abandoned
Application number
US10/243,221
Inventor
George O'Brien
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.)
Michelin Recherche et Technique SA France
Original Assignee
Individual
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
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Priority to US10/243,221 priority Critical patent/US20040021559A1/en
Assigned to MICHELIN RECHERCHE ET TECHNIQUE, S.A. reassignment MICHELIN RECHERCHE ET TECHNIQUE, S.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: O'BRIEN, GEORGE P.
Publication of US20040021559A1 publication Critical patent/US20040021559A1/en
Abandoned legal-status Critical Current

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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
    • B60C23/0433—Radio signals
    • B60C23/0447—Wheel or tyre mounted circuits
    • B60C23/0452—Antenna structure, control or arrangement
    • 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
    • B60C23/0491—Constructional details of means for attaching the control device
    • B60C23/0493—Constructional details of means for attaching the control device for attachment on the tyre
    • 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
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2208—Supports; 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
    • H01Q1/2241—Supports; 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

Definitions

  • Electronic devices integrated in a tire can provide functions such as identification and tracking during manufacture, distribution, and use, and measurement of physical parameters such as pressure and temperature during use of the tire.
  • Many systems utilize radio frequency communication between the tire and the external monitoring or interrogating device.
  • a radio frequency communication link requires one or more antennas.
  • the invention provides an improved electronics device with a radio frequency antenna for integration with a tire that avoids problems in the art.
  • the improved electronics device includes an antenna that is shaped to absorb stresses imposed on it by the tire or tire manufacturing process.
  • the antenna is a meandering antenna, having one or more undulations along its length to allow the antenna to stretch along with any stretching of the tire substrate on which the device is mounted.
  • the undulations or bending portions of the antenna are substantially perpendicular to the direction in which the antenna extends from the electronics package.
  • meandering antennas may be used, for example, sine wave shaped, square wave shaped, a single broad undulation, or other shapes capable of absorbing tensile stress imposed on the direction the wire extends from the electronics package.
  • the antenna body can be any body capable of transmitting radio frequency energy.
  • the antenna body is a wire formed of spring steel, brass coated spring steel, or spring brass. Such materials are capable of surviving the bending and flexing deformations typically experienced by the tire.
  • FIG. 1 is an illustration of an electrical device having an antenna in accordance with the invention
  • FIG. 2 is a perspective view of a tire showing one placement for an electrical device with an antenna
  • FIG. 3 is an illustration of an antenna and electronics device showing an alternative embodiment of the antenna
  • FIG. 4 is an illustration of an antenna and electronics device showing another alternative embodiment of the antenna having a squared meandering pattern
  • FIG. 5 is an illustration of an antenna and electronics device showing an alternative embodiment of the antenna having a single broad undulation or swoop shape.
  • FIG. 1 shows an electronics device 10 for a tire which includes a radio device 12 and an antenna 14 in accordance with the invention.
  • the electronics device 10 itself may be an identification or tracking device, such as may be used in manufacturing, distribution, and sale activities.
  • the device 10 may also be a monitoring device for measuring temperature, pressure or other physical parameters in an operating tire.
  • the radio device 12 is used to transmit information from the electronics device to a remote device (not illustrated) external of the tire, and/or to receive information from the remote device.
  • the antenna 14 in such a device is used to transmit to and/or receive from the external device information by radio frequency.
  • the antenna may also serve to receive energy from an interrogation device.
  • Such radio devices may operate as receivers, transmitters, transponders or reflectors, and, because the antenna of the invention is useful for all these devices, in the following description, the term “radio device” is intended to be inclusive.
  • the antenna 14 is shown as a dipole, having two branches 16 , 18 extending from the radio device.
  • the invention may advantageously be used with dipoles, monopoles, or multiple antennas as the transmission and space conditions require.
  • the antenna 14 is shaped to meander to provide some longitudinal flexibility (in the direction the antenna extends from the radio device 12 ) and bending flexibility (in the direction normal to the view shown).
  • the illustrated embodiment of FIG. 1 shows a sinusoidal wave pattern, and is considered a preferred embodiment.
  • the radio frequency device 10 may be positioned in a number of different places in a tire 30 .
  • a single tire may include one or several such devices, for example, if it is desired to monitor physical parameters at different locations in the tire or to monitor different parameters.
  • the electronics device 10 may be positioned on the sidewall 32 or at the tread or crown portion 34 .
  • the electronics device 10 may be applied under or embedded in a rubber patch (not illustrated) which is adhered to a surface of a tire 14 .
  • the radio device 11 and antenna 12 may be embedded in the tire structure itself or layered under rubber material in the tire 14 which forms a surface of the tire.
  • the radio frequency device 10 may be positioned between a carcass ply and an inner liner, between the carcass ply and the sidewall cover, and/or between the belt package and the tread.
  • integrated the inventors refer to any manner of incorporating the antenna 12 and radio device 11 in a tire in a way that positions the device and antenna on or in a surface of the tire.
  • FIG. 1 those skilled in the tire art understand that a tire experiences significant deformation during the manufacturing process, from shaping from a cylindrical shape on the tire building drum to the familiar toroidal tire shape, and from pressure during curing. Also, during use of the tire, the sidewall and tread area undergo tensile and compressive forces as that portion of the tire moves into, through, and out of ground contact. A tensile force T is indicated in FIG. 1 being applied in the antenna 14 extension direction. The undulations or curves along the length of the antenna 14 allow it to absorb and relieve tensile force similar to a spring, by permitting some extension along the length of the antenna, length being understood to mean the general direction in which the antenna extends from the radio device. This helps prevent damage or breakage of the antenna 14 when tension is applied, and is a significant advantage for an antenna attached to a tire.
  • meandering patterns may be used, and may be selected according to the length of antenna needed, the space available in the patch or in the portion of the tire selected for embedding the device, and the material from which the antenna is formed.
  • FIG. 3 shows an alternative embodiment of the device 10 , in which an antenna 20 is shaped with a saw-tooth pattern.
  • FIG. 4 shows an antenna 22 having a shape similar to a square wave, which may be advantageous if the antenna is printed on a surface.
  • FIG. 5 shows an antenna 24 having a single undulation or swoop shape.
  • the curves or undulations in the various antenna embodiments are directed generally perpendicular to the direction in which the antenna extends from the radio device.
  • the antennas do not encircle the radio device, as this is believed to present additional opportunity for tension to damage the wire.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Support Of Aerials (AREA)
  • Tires In General (AREA)
  • Pens And Brushes (AREA)

Abstract

An improved electronics device for a tire includes a radio device and an antenna intended to be attached to or embedded in a tire, the antenna being shaped to absorb tensile stress applied by the tire, and having a meandering shape. A preferred shape is a sinusoidal wave pattern. The antenna body may be a wire formed of spring steel, brass coated spring steel, or spring brass.

Description

    BACKGROUND AND SUMMARY
  • Electronic devices integrated in a tire can provide functions such as identification and tracking during manufacture, distribution, and use, and measurement of physical parameters such as pressure and temperature during use of the tire. Many systems utilize radio frequency communication between the tire and the external monitoring or interrogating device. A radio frequency communication link requires one or more antennas. [0001]
  • Electronics devices that mount to a surface of the tire or the wheel, or are incorporated in the tire inflation valve are available. An electronic device and antenna that is securely attached to a tire structure, for example, by being embedded in the elastomeric material of the tire or attached by means of an elastomeric patch that is bonded to the tire, is desirable. Such mounting or attachment provides a permanent, tamper-proof integration. Integrating an antenna in the tire, however, presents difficulties. A tire undergoes flexing and distortions during normal use that can the antenna to fracture and separate from the electronics device. Further, if the electronics device and antenna are to be integrated with the tire during manufacture and before curing of the tire, the manufacturing process includes many steps, such as shaping and curing, that could cause the wire to break. [0002]
  • The invention provides an improved electronics device with a radio frequency antenna for integration with a tire that avoids problems in the art. According to the invention, the improved electronics device includes an antenna that is shaped to absorb stresses imposed on it by the tire or tire manufacturing process. According to a preferred embodiment, the antenna is a meandering antenna, having one or more undulations along its length to allow the antenna to stretch along with any stretching of the tire substrate on which the device is mounted. According to another aspect of the invention, the undulations or bending portions of the antenna are substantially perpendicular to the direction in which the antenna extends from the electronics package. [0003]
  • Other meandering antennas may be used, for example, sine wave shaped, square wave shaped, a single broad undulation, or other shapes capable of absorbing tensile stress imposed on the direction the wire extends from the electronics package. [0004]
  • The antenna body can be any body capable of transmitting radio frequency energy. Advantageously, and preferably for use in a tire because of its durability under fatigue conditions, the antenna body is a wire formed of spring steel, brass coated spring steel, or spring brass. Such materials are capable of surviving the bending and flexing deformations typically experienced by the tire. [0005]
  • The invention will be better understood by reference to the following detailed description in conjunction with the appended drawings.[0006]
    • BRIEF DESCRIPTION OF THE DRAWING FIGURES
  • FIG. 1 is an illustration of an electrical device having an antenna in accordance with the invention; [0007]
  • FIG. 2 is a perspective view of a tire showing one placement for an electrical device with an antenna; and, [0008]
  • FIG. 3 is an illustration of an antenna and electronics device showing an alternative embodiment of the antenna; [0009]
  • FIG. 4 is an illustration of an antenna and electronics device showing another alternative embodiment of the antenna having a squared meandering pattern; and, [0010]
  • FIG. 5 is an illustration of an antenna and electronics device showing an alternative embodiment of the antenna having a single broad undulation or swoop shape.[0011]
    • DETAILED DESCRIPTION
  • FIG. 1 shows an [0012] electronics device 10 for a tire which includes a radio device 12 and an antenna 14 in accordance with the invention. The electronics device 10 itself may be an identification or tracking device, such as may be used in manufacturing, distribution, and sale activities. The device 10 may also be a monitoring device for measuring temperature, pressure or other physical parameters in an operating tire. The radio device 12 is used to transmit information from the electronics device to a remote device (not illustrated) external of the tire, and/or to receive information from the remote device. The antenna 14 in such a device is used to transmit to and/or receive from the external device information by radio frequency. In addition, the antenna may also serve to receive energy from an interrogation device. Such radio devices may operate as receivers, transmitters, transponders or reflectors, and, because the antenna of the invention is useful for all these devices, in the following description, the term “radio device” is intended to be inclusive.
  • The [0013] antenna 14 is shown as a dipole, having two branches 16, 18 extending from the radio device. The invention may advantageously be used with dipoles, monopoles, or multiple antennas as the transmission and space conditions require.
  • The [0014] antenna 14 is shaped to meander to provide some longitudinal flexibility (in the direction the antenna extends from the radio device 12) and bending flexibility (in the direction normal to the view shown). The illustrated embodiment of FIG. 1 shows a sinusoidal wave pattern, and is considered a preferred embodiment.
  • As shown in FIG. 2, advantageously, the [0015] radio frequency device 10 may be positioned in a number of different places in a tire 30. A single tire may include one or several such devices, for example, if it is desired to monitor physical parameters at different locations in the tire or to monitor different parameters. The electronics device 10 may be positioned on the sidewall 32 or at the tread or crown portion 34. The electronics device 10 may be applied under or embedded in a rubber patch (not illustrated) which is adhered to a surface of a tire 14. Alternatively, the radio device 11 and antenna 12 may be embedded in the tire structure itself or layered under rubber material in the tire 14 which forms a surface of the tire. For example, the radio frequency device 10 may be positioned between a carcass ply and an inner liner, between the carcass ply and the sidewall cover, and/or between the belt package and the tread. By “integrated” the inventors refer to any manner of incorporating the antenna 12 and radio device 11 in a tire in a way that positions the device and antenna on or in a surface of the tire.
  • Referring now also to FIG. 1, those skilled in the tire art understand that a tire experiences significant deformation during the manufacturing process, from shaping from a cylindrical shape on the tire building drum to the familiar toroidal tire shape, and from pressure during curing. Also, during use of the tire, the sidewall and tread area undergo tensile and compressive forces as that portion of the tire moves into, through, and out of ground contact. A tensile force T is indicated in FIG. 1 being applied in the [0016] antenna 14 extension direction. The undulations or curves along the length of the antenna 14 allow it to absorb and relieve tensile force similar to a spring, by permitting some extension along the length of the antenna, length being understood to mean the general direction in which the antenna extends from the radio device. This helps prevent damage or breakage of the antenna 14 when tension is applied, and is a significant advantage for an antenna attached to a tire.
  • Other meandering patterns may be used, and may be selected according to the length of antenna needed, the space available in the patch or in the portion of the tire selected for embedding the device, and the material from which the antenna is formed. [0017]
  • FIG. 3 shows an alternative embodiment of the [0018] device 10, in which an antenna 20 is shaped with a saw-tooth pattern.
  • FIG. 4 shows an [0019] antenna 22 having a shape similar to a square wave, which may be advantageous if the antenna is printed on a surface.
  • FIG. 5 shows an [0020] antenna 24 having a single undulation or swoop shape.
  • The curves or undulations in the various antenna embodiments are directed generally perpendicular to the direction in which the antenna extends from the radio device. The antennas do not encircle the radio device, as this is believed to present additional opportunity for tension to damage the wire. [0021]
  • The invention has been described in terms of preferred principles, embodiments, and structures for the purposes of description and illustration. Those skilled in the art will understand that substitutions may be made and equivalents found without departing from the scope of the invention as defined by the appended claims. [0022]

Claims (6)

What is claimed is:
1. An improved electronics device for a tire of a vehicle, comprising:
a radio device for communicating information from said tire with a remote radio device; and,
at least a first antenna wire connected to and extending from said electronics package, wherein, the at least first antenna wire is shaped to have at least one undulation for relieving tension applied in the direction of the at least first antenna wire.
2. The improved electronics device as claimed in claim 1, wherein said at least first antenna wire is shaped in a sinusoidal pattern.
3. The improved electronics component assembly as claimed in claim 1, wherein the at least first wire is shaped with a saw-tooth pattern.
4. The improved electronics device as claimed in claim 1, wherein the at least first wire is shaped in a square wave pattern.
5. The improved electronics device as claimed in claim 1, wherein the at least first wire is shaped in a single undulation.
6. The improved electronics device as claimed in claim 1, further comprising a second antenna wire connected to and extending from said electronics package and shaped to have at least one undulation for relieving tension in the at least second antenna wire.
US10/243,221 2002-07-31 2002-09-13 Electronics device for a tire Abandoned US20040021559A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/243,221 US20040021559A1 (en) 2002-07-31 2002-09-13 Electronics device for a tire

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/210,189 US6734791B2 (en) 2002-07-31 2002-07-31 Electronics component assembly in a tire for remotely monitoring tire conditions
US10/243,221 US20040021559A1 (en) 2002-07-31 2002-09-13 Electronics device for a tire

Related Parent Applications (1)

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US10/210,189 Continuation-In-Part US6734791B2 (en) 2002-07-31 2002-07-31 Electronics component assembly in a tire for remotely monitoring tire conditions

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US20040021559A1 true US20040021559A1 (en) 2004-02-05

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US10/243,221 Abandoned US20040021559A1 (en) 2002-07-31 2002-09-13 Electronics device for a tire

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US (2) US6734791B2 (en)
EP (1) EP1542876B1 (en)
JP (1) JP4488208B2 (en)
KR (1) KR101026338B1 (en)
CN (1) CN100418796C (en)
AT (1) ATE376497T1 (en)
AU (1) AU2003257026A1 (en)
DE (1) DE60317084T2 (en)
WO (1) WO2004011285A1 (en)

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US20050099283A1 (en) * 2002-12-16 2005-05-12 The Goodyear Tire & Rubber Company Coupled transponder and antenna system and method
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US20100127845A1 (en) * 2000-07-26 2010-05-27 Hardman Gordon E System For Conserving Battery Life In A Battery Operated Device
US8266465B2 (en) 2000-07-26 2012-09-11 Bridgestone Americas Tire Operation, LLC System for conserving battery life in a battery operated device
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US7180410B2 (en) * 2004-10-06 2007-02-20 The Goodyear Tire & Rubber Company Annular wire antenna and transponder apparatus method of assembly
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US8138924B2 (en) * 2005-03-09 2012-03-20 Michelin Recherche Et Technique Robust mounting for RFID transponder antenna
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JP4488208B2 (en) 2010-06-23
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US20040021558A1 (en) 2004-02-05
ATE376497T1 (en) 2007-11-15
CN100418796C (en) 2008-09-17
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KR101026338B1 (en) 2011-04-04
DE60317084D1 (en) 2007-12-06

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