WO2019221879A1 - Structures et procédés permettant un alignement de capteur de pneu - Google Patents

Structures et procédés permettant un alignement de capteur de pneu Download PDF

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Publication number
WO2019221879A1
WO2019221879A1 PCT/US2019/028490 US2019028490W WO2019221879A1 WO 2019221879 A1 WO2019221879 A1 WO 2019221879A1 US 2019028490 W US2019028490 W US 2019028490W WO 2019221879 A1 WO2019221879 A1 WO 2019221879A1
Authority
WO
WIPO (PCT)
Prior art keywords
tire
sensor
tread
raised portion
placement location
Prior art date
Application number
PCT/US2019/028490
Other languages
English (en)
Inventor
James Barton Summers III
David Alan Koester
Original Assignee
Tyrata, Inc.
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 Tyrata, Inc. filed Critical Tyrata, Inc.
Publication of WO2019221879A1 publication Critical patent/WO2019221879A1/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
    • B60C23/0491—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
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/24—Wear-indicating arrangements
    • B60C11/243—Tread wear sensors, e.g. electronic sensors

Definitions

  • the present disclosure relates generally to tires, and more particularly, to tire sensors and related methods.
  • tire pressure sensors may be provided in vehicle tires. Such sensors may be used to automatically monitor tire pressure, and a warning (e.g., a warning light) may be provided to the driver when low pressure is detected.
  • a warning e.g., a warning light
  • Other aspects of the tire may require manual monitoring and failure to adequately monitor such aspects may cause issues relating to safety. Accordingly, improved monitoring of vehicle tires may be desired.
  • methods may be provided to align a tire tread monitoring sensor.
  • a raised portion of tread may be optically identified on an outside of a tire. Responsive to identifying the raised portion of the tread, a sensor placement location may be designated on an inside of the tire in alignment with the raised portion of the tread.
  • methods may be provided to mount a tire tread monitoring sensor to an inside surface of a tire.
  • a raised portion of tread may be optically identified on an outside of a tire. Responsive to identifying the raised portion of the tread, the tire tread monitoring sensor may be affixed to a sensor placement location on an inside surface of the tire, wherein the sensor placement location is aligned with the raised portion of the tread in a radial direction of the tire.
  • Figure 1 is a photograph illustrating a lid and a carrier according to some embodiments of inventive concepts together with a 1 Euro coin provided to illustrate scale;
  • Figure 2 is a photograph illustrating a rubber mount according to some embodiments of inventive concepts
  • Figure 3 is a cross-sectional/side view of a tread wear sensor mounted inside a carrier of Figure 1 according to some embodiments of inventive concepts;
  • FIG. 4 to a top view of a tread wear sensor of Figure 3 according to some embodiments of inventive concepts
  • Figure 5 is a cross-sectional/side view of a tread wear sensor mounted in the carrier of Figure 1 with a battery and a printed circuit board according to some embodiments of inventive concepts;
  • Figure 6 is a block diagram illustrating elements of a tire monitoring system according to some embodiments of inventive concepts
  • Figures 7A and 7B are schematic diagrams illustrating operation of a tread wear sensor according to some embodiments of inventive concepts.
  • Figure 8A is a photograph illustrating a direction of measurement of a tread monitoring system according to some embodiments of inventive concepts
  • Figures 8B and 8C are photographs illustrating a tread monitoring system on an inner tire surface according to some embodiments of inventive concepts
  • Figure 9 is a cutaway view illustrating elements of a tire
  • Figure 10 is a cross sectional view illustrating a tire monitoring system on an inner surface of a tire according to some embodiments of inventive concepts.
  • Figures 11 A and 11B illustrate elements of a system used to align a tire monitoring system with a tread block of a tire according to some embodiments of inventive concepts.
  • printed tread wear sensors may be used to monitor vehicle tire tread wear.
  • TPMS Tire Pressure Monitoring Systems
  • VDO Vehicle Pressure Monitoring Systems
  • TPMS sensors are all housed inside a small carrier roughly 1 inch in diameter as shown in Figure 1 including a carrier and a lid.
  • the lid is placed over the contents of the carrier and sealed, and this“package” is then placed inside a rubber mount (shown in Figure 2) that is attached to the inside surface of the tire by an adhesive.
  • the base of the package carrier may thus be mounted adjacent to the inside surface of the tire.
  • a tread wear sensor may be mounted in the same carrier and share the power management and RF
  • communications hardware used for TPMS may be provided. According to some embodiments of inventive concepts, methods may be provided to integrate tire tread wear and pressure monitoring systems.
  • Tread wear sensor structures/designs and methods according to some embodiments disclosed herein may enable integration with a tire pressure monitor into a carrier/package.
  • the tread wear sensor may be placed at the base of the carrier (also referred to as the bottom of the carrier) to position the sensor close to the inner tire surface.
  • the battery may be placed at the bottom of the carrier.
  • the tread wear sensor (e.g., the tread wear sensor elements) may be positioned between the battery and a base of the carrier. This design may position the tread wear sensor close to the tire surface (e.g., as close as possible) and may reduce/avoid RF (radio frequency) interference from the battery and/or electronics in the package.
  • an epoxy or similar underfill or potting material may be used underneath and/or above the tread wear sensor to secure the tread wear sensor. In addition, this
  • underfill/potting material may protect the tread wear sensor from harsh operating conditions including varying humidity and/or mechanical shock/vibration.
  • the orientation of the tread wear sensor could be either upward facing or downward facing.
  • Figure 3 is a cross-sectional/side view of a tread wear sensor (labeled“sensor”) mounted inside the carrier of Figure 1. As shown, the tread wear sensor may be provided adjacent a base of the carrier, and an underfill/potting material may be provided on the tread wear sensor.
  • sensor leads e.g., pigtail sensor leads
  • sensor leads from the sensor may extend through the underfill/potting material to provide electrical coupling with control circuitry.
  • Figure 4 is a top view of the tread wear sensor of Figure 3 in the carrier. For purposes of illustration, the tread wear sensor is shown through the underfill/potting material in Figure 4, but it will be understood that the underfill/potting material may cover the tread wear sensor (except for the pigtail sensor leads).
  • Figure 5 is a cross-sectional/side view of the tread wear sensor mounted inside the carrier of Figure 1 with a battery and printed circuit board PCB.
  • the pigtail sensor leads (“leads”) of the tread wear sensor may extend out of the carrier and may wrap around the battery and printed circuit board PCB.
  • the leads of the tread wear sensor may then be attached to the PCB by soldering (surface mount technology), conductive epoxy, or by a connector or socket. It may be useful to include additional dielectric shielding (not shown in Figure 5) between the battery and the tread wear sensor.
  • the underfill/potting material may provide adequate dielectric shielding, but in other embodiments, different/additional layers may be added.
  • the tread wear sensor may be encapsulated by applying a thin Kapton, PET (polyethylene terephthalate), or other layer over the top surface of the tread wear sensor after printing. This encapsulation may extend down the length of the leads but leave exposed the ends of the leads for subsequent electrical connection.
  • Metal vias or feedthroughs may be provided in the tread wear sensor substrate (e.g., Kapton), particularly at the ends of the leads to improve subsequent electrical connection. These metal vias/feedthroughs may allow electrical and mechanical interface to the printed traces from either the top or bottom side of the sensor substrate.
  • This may provide a thick, mechanically robust metal layer for connection either by solder, conductive epoxies or socket connectors, allowing for electrical connection from either side of the substrate.
  • a metal layer may be provided on the backside of the sensor substrate (away from the carrier base and the tire surface) to provide an effective RF ground plane. This ground plane layer may be continuous or discontinuous based on RF characteristics of the sensor.
  • the sensor elements may be provided on a flexible sensor substrate, and mounted so that the sensor elements are between the flexible sensor substrate and the carrier base, and so that the sensor elements are between the flexible sensor substrate and the inner surface of the tire.
  • a metal layer may be provided (e.g., as an RF ground plane) on the backside of the sensor substrate so that the sensor substrate is between the metal layer and the sensor elements.
  • the sensor elements may be between the backside metal layer and the carrier base, and between the backside metal layer and the inner surface of the tire.
  • a lid (e.g., as shown in Figure 1) may be provide over the carrier of Figure 5 to seal the tread wear sensor, battery, and PCB within the carrier/lid package, and the carrier base may be mounted on an inside surface of the tire to be monitored.
  • the structure of Figure 5 may thus be used to provide an integrated tread wear sensor and pressure monitor. While one PCB is shown in Figure 5 for purposes of illustration, control circuitry may be provided using one or a plurality of PCBs.
  • a pressure sensor e.g., a micro-electro-mechanical-system MEMS pressure sensor
  • the PCB e.g., mounted on the PCB
  • circuitry may be provided in/on the printed circuit board to provide controller 601, wireless interface 603, and/or pressure sensor 605.
  • Controller 601 and/or wireless interface 603 may be implemented using one or more integrated circuit devices that may be mounted (soldered) on PCB (or otherwise coupled with PCB).
  • pressure sensor 605 may be a MEMS pressure sensor that is provide as a discrete device on/in the PCB, and/or pressure sensor 605 may be integrated with circuits used to provide controller 601 and/or wireless interface 603.
  • battery 609 may be positioned between the PCB and tread wear sensor 607 in the carrier, with the tread wear sensor positioned between battery 609 and the base of the carrier (which is mounted to the inside surface of the tire).
  • Controller 601 may thus generate tire pressure information based on signals received from pressure sensor 605, and controller 601 may thus generate tread wear information based on signals received from tread wear sensor 607.
  • the tire pressure information and/or tread wear information may thus be transmitted through wireless communication interface 603 (also referred to as a wireless interface circuit or wireless interface circuitry) to a receiver in the vehicle that provides the information to a controller in the vehicle.
  • the wireless interface 603 may thus provide wireless communication (e.g., radio communication) with a receiver in the vehicle to facilitate wireless transmission of tire pressure and/or tread wear information from the spinning tire to the vehicle controller.
  • the wireless interface 603 may also receive information (e.g., instructions) from a transmitter in the vehicle, such as instructions to transmit tire pressure and/or tread wear information. While pressure and tire wear sensors are discussed by way of example, other sensors (e.g., a temperature sensor) may also be included in the tire monitoring system. With a temperature sensor, for example, controller 601 may generate tire pressure information based on signals received from the temperature sensor, and controller 601 may transmit such temperature information through wireless communication interface 603 to the receiver in the vehicle.
  • information e.g., instructions
  • a transmitter in the vehicle such as instructions to transmit tire pressure and/or tread wear information.
  • a temperature sensor e.g., a temperature sensor
  • controller 601 may generate tire pressure information based on signals received from the temperature sensor, and controller 601 may transmit such temperature information through wireless communication interface 603 to the receiver in the vehicle.
  • controller 601 may control wireless communication interface 603 to transmit communications (e.g., tread wear and/or tire pressure information) through wireless communication interface 603 over a radio interface to a vehicle receiver and/or to receive communications (e.g., requests for information) through wireless communication interface 603 from a vehicle transmitter over a radio interface.
  • modules may be stored in memory, and these modules may provide instructions so that when instructions of a module are executed by controller 601, controller 601 performs respective operations (e.g., operations discussed below with respect to the claims).
  • Figures 7A and 7B are schematic diagrams illustrating operation of a tread wear sensor according to some embodiments of inventive concepts.
  • the tread wear sensor is shown on an inside surface of the tire without the other elements of Figures 5/6 to more clearly illustrate operations thereof. Operation of the tread wear sensor is based on the mechanics of how electric fields interact with different materials.
  • the tread wear sensor (TWS) includes two electrically conductive sensor elements (also referred to as electrodes) side-by-side and very close to each other, and positioning the two sensor elements adjacent to the inside of the tire as shown in Figures 7A and 7B.
  • the carrier base may be between the sensor elements and the inside surface of the tire, but the carrier has been omitted from Figures 7A and 7B for each of illustration.
  • the controller 601 may thus apply an oscillating electrical voltage to one of the sensor elements while the other sensor element is grounded to generate an electrical field between the two sensor elements (shown as arcs in Figures 7A and 7B). While most of the electric field may pass directly between edges of the sensor elements, some of the electric field arcs from the face of one electrode to the face of the other electrode through the tire tread (shown by arcs in Figures 7A and 7B). The tire rubber and tread structure interfere with this“fringing field,” and by measuring this interference through the electrical response of the grounded sensor element, the controller 601 may thus determine a thickness of the tire above the tread wear sensor.
  • Some embodiments of the present disclosure address alignment and/or proper placement of the sensor unit inside the tire for improved/optimal tread sensing.
  • a tire tread monitoring system may be defined as including a tread sensor (e.g., tread wear sensor 607), drive and sense electronics (e.g., provided by controller 601), battery (e.g., battery 609), power management (e.g., provided by controller 601), and RF communication electronics (e.g., wireless communication interface 603), and the TTMS may be placed in a package design similar to that described above for TPMS integration (e.g., as discussed with respect to Figures 1-6 and 7A-B).
  • a tread sensor e.g., tread wear sensor 607
  • drive and sense electronics e.g., provided by controller 601
  • battery e.g., battery 609
  • power management e.g., provided by controller 601
  • RF communication electronics e.g., wireless communication interface 603
  • the TTMS may be provided in the package (without TPMS and/or temperature monitoring), the TTMS may be provided in the package integrated with TPMS (without temperature monitoring), the TTMS may be provided in the package integrated with temperature monitoring (without TPMS), or the TTMS may be provided in the package integrated with TPMS and temperature monitoring.
  • the sensing direction of the sensor is on the axis normal to the bottom surface (as viewed in Figure 8A) of the package (including carrier, mount, and internal TTMS).
  • the direction of measurement may also be the direction of placement for the sensor package on the inside surface of a tire, such that the bottom surface (as viewed in Figure 8A) is affixed to an inside surface of the tire.
  • the center axis of the sensor should align with a tread block or rib on the outside surface of the tire as shown in Figures 9 and 10.
  • alignment of the TTMS sensor refers to alignment of the TTMS sensor elements (e.g., shown in Figure 4) relative to a block/rib of the tire tread.
  • a placement fixture may be used to provide alignment of the TTMS sensor package relative to tread blocks/ribs on the outside of the tire.
  • the fixture may include a laser(s) to provide location identification/designation, or alternatively, an inking system to place a spot on the inside of the tire for subsequent sensor attachment.
  • the fixture may include:
  • a frame to position the tire and to provide/ensure vertical alignment
  • a gantry that holds a camera (or laser) to inspect (or align) the outside of the tire (tread side) and a fixed arm with optics (laser or focused light source) that extends into the inner part of the tire such that the optics are on the same axis as the camera on the outside of the tire.
  • the gantry may be on a hinge allowing it to be rotated into position for easy use, or the gantry may move along the gantry translation direction sufficiently to allow movement of the tire into and out of the tire frame.
  • the gantry may have translational motion (along the direction of gantry translation) across the width of tire to enable location of the desired/optimal tread location.
  • the camera and laser on the gantry can be calibrated to provide alignment with the tire removed from the fixture.
  • the a desired/optimal location on the outside of the tire (e.g., a tread block) may be located.
  • the system may designate (e.g., illuminate or mark) a spot on the inside of the tire corresponding to the desired location on the outside of the tire.
  • the sensor package may be placed on the desired location.
  • Figure 11B is a view taken 90 degrees relative to the view of Figure 11B (taken from the left side of Figure 11A).
  • the laser or marker may leave a visible mark at the desired location, and a technician may manually affix the sensor package to the marked location on the inside surface of the tire.
  • the laser may illuminate the desired location (without marking), and a technician may manually affix the sensor package at the illuminated location.
  • automated equipment may be used to affix the sensor package at the designated location based on marking and/or illumination provided by the laser or marker.
  • an actuator may be provided on the gantry in place of the laser or marker, and the actuator may place the sensor package in the desired location without requiring illumination or marking.
  • a piston actuator may be provided on the gantry in place of the laser or marker, and once the gantry is positioned over the tread block (based on optical information), the piston actuator may move along the radial direction to affix the sensor package to the inside of the tire in alignment with the tread block.
  • the terms “comprise”, “comprising”, “comprises”, “include”, “including”, “includes”, “have”, “has”, “having”, or variants thereof are open-ended, and include one or more stated features, integers, elements, steps, components or functions but does not preclude the presence or addition of one or more other features, integers, elements, steps, components, functions or groups thereof.
  • the common abbreviation “e.g.”, which derives from the Latin phrase “exempli gratia” may be used to introduce or specify a general example or examples of a previously mentioned item, and is not intended to be limiting of such item.
  • the common abbreviation “i.e.”, which derives from the Latin phrase “id est,” may be used to specify a particular item from a more general recitation.
  • top when an upper part of a drawing is referred to as a "top” and a lower part of a drawing is referred to as a “bottom” for the sake of convenience, in practice, the "top” may also be called a “bottom” and the “bottom” may also be a “top” without departing from the teachings of the inventive concept (e.g., if the structure is rotate 180 degrees relative to the orientation of the figure).
  • Example embodiments are described herein with reference to block diagrams and/or flowchart illustrations of computer-implemented methods, apparatus (systems and/or devices) and/or computer program products.
  • a block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations can be implemented by computer program instructions that are performed by one or more computer circuits.
  • These computer program instructions may be provided to a processor circuit of a general purpose computer circuit, special purpose computer circuit, and/or other programmable data processing circuit to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, transform and control transistors, values stored in memory locations, and other hardware components within such circuitry to implement the functions/acts specified in the block diagrams and/or flowchart block or blocks, and thereby create means (functionality) and/or structure for implementing the functions/acts specified in the block diagrams and/or flowchart block(s).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

Procédé permettant d'aligner/monter un capteur de contrôle de bande de roulement de pneu. Selon certains modes de réalisation, une partie surélevée de bande de roulement peut être optiquement identifiée sur un extérieur d'un pneu, et un endroit de placement de capteur peut être désigné sur un intérieur du pneu en alignement avec la partie surélevée de la bande de roulement en réponse à l'identification de la partie surélevée de la bande de roulement. Selon certains autres modes de réalisation, une partie surélevée de bande de roulement peut être optiquement identifiée sur un extérieur d'un pneu, et le capteur de surveillance de bande de roulement de pneu peut être fixé à un endroit de placement de capteur sur une surface intérieure du pneu en réponse à l'identification de la partie surélevée de la bande de roulement, l'endroit de placement de capteur étant aligné avec la partie surélevée de la bande de roulement dans une direction radiale du pneu.
PCT/US2019/028490 2018-05-14 2019-04-22 Structures et procédés permettant un alignement de capteur de pneu WO2019221879A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862671016P 2018-05-14 2018-05-14
US62/671,016 2018-05-14

Publications (1)

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WO2019221879A1 true WO2019221879A1 (fr) 2019-11-21

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11614317B2 (en) 2019-06-21 2023-03-28 Tyrata, Inc. Methods providing enhanced material thickness sensing with capacitive sensors using inductance-generated resonance and related devices
US11673436B2 (en) 2018-06-29 2023-06-13 Tyrata, Inc. Structures and methods providing tread sensor integration
EP4349619A1 (fr) * 2022-10-03 2024-04-10 Nokian Renkaat Oyj Pneumatique et procédé de fabrication d'un pneumatique

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US6498959B1 (en) * 2000-01-19 2002-12-24 Hunter Engineering Company Apparatus and method for controlling a mechanism for positioning video cameras for use in measuring vehicle wheel alignment
US20120008148A1 (en) * 2009-03-03 2012-01-12 Sigmavision Limited Vehicle tyre measurement
US20120011926A1 (en) * 2009-01-28 2012-01-19 Continental Automotive Gmbh Device and method for measuring the tread depth of a motor vehicle tire
US20140360256A1 (en) * 2013-06-07 2014-12-11 The Goodyear Tire & Rubber Company Method of tread wear sensor installation in a tire
US20140360019A1 (en) * 2012-01-26 2014-12-11 PIRELLI TYRE S.p. A. Method for installing a monitoring device in a tyre for vehicle wheels
US20150000391A1 (en) * 2013-06-27 2015-01-01 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Marking device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6498959B1 (en) * 2000-01-19 2002-12-24 Hunter Engineering Company Apparatus and method for controlling a mechanism for positioning video cameras for use in measuring vehicle wheel alignment
US20120011926A1 (en) * 2009-01-28 2012-01-19 Continental Automotive Gmbh Device and method for measuring the tread depth of a motor vehicle tire
US20120008148A1 (en) * 2009-03-03 2012-01-12 Sigmavision Limited Vehicle tyre measurement
US20140360019A1 (en) * 2012-01-26 2014-12-11 PIRELLI TYRE S.p. A. Method for installing a monitoring device in a tyre for vehicle wheels
US20140360256A1 (en) * 2013-06-07 2014-12-11 The Goodyear Tire & Rubber Company Method of tread wear sensor installation in a tire
US20150000391A1 (en) * 2013-06-27 2015-01-01 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Marking device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11673436B2 (en) 2018-06-29 2023-06-13 Tyrata, Inc. Structures and methods providing tread sensor integration
US11614317B2 (en) 2019-06-21 2023-03-28 Tyrata, Inc. Methods providing enhanced material thickness sensing with capacitive sensors using inductance-generated resonance and related devices
EP4349619A1 (fr) * 2022-10-03 2024-04-10 Nokian Renkaat Oyj Pneumatique et procédé de fabrication d'un pneumatique

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