EP2743387A1 - Stoffprodukt und daraus hergestellter Sensorstoff - Google Patents

Stoffprodukt und daraus hergestellter Sensorstoff Download PDF

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Publication number
EP2743387A1
EP2743387A1 EP12197198.0A EP12197198A EP2743387A1 EP 2743387 A1 EP2743387 A1 EP 2743387A1 EP 12197198 A EP12197198 A EP 12197198A EP 2743387 A1 EP2743387 A1 EP 2743387A1
Authority
EP
European Patent Office
Prior art keywords
fabric
strips
layer
conductive
yarns
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.)
Granted
Application number
EP12197198.0A
Other languages
English (en)
French (fr)
Other versions
EP2743387B1 (de
Inventor
Marc Torrent Poch
Jordi Planaguma Vila
Carlos Perez Saez
Meritxell Garcia-Milá Mateu
Urbez Santana Roma
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.)
Fundacio Eurecat
Original Assignee
FUNDACIO CETEMMSA
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 FUNDACIO CETEMMSA filed Critical FUNDACIO CETEMMSA
Priority to EP12197198.0A priority Critical patent/EP2743387B1/de
Priority to ES12197198.0T priority patent/ES2669196T3/es
Publication of EP2743387A1 publication Critical patent/EP2743387A1/de
Application granted granted Critical
Publication of EP2743387B1 publication Critical patent/EP2743387B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/02—Pile fabrics or articles having similar surface features
    • D04B21/04—Pile fabrics or articles having similar surface features characterised by thread material
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/01—Surface features
    • D10B2403/011—Dissimilar front and back faces
    • D10B2403/0114—Dissimilar front and back faces with one or more yarns appearing predominantly on one face, e.g. plated or paralleled yarns
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/021—Lofty fabric with equidistantly spaced front and back plies, e.g. spacer fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/024—Fabric incorporating additional compounds
    • D10B2403/0243—Fabric incorporating additional compounds enhancing functional properties
    • D10B2403/02431—Fabric incorporating additional compounds enhancing functional properties with electronic components, e.g. sensors or switches
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/08—Upholstery, mattresses

Definitions

  • the present invention relates to a fabric destined to be used in a fabric sensor, that can be made in a single process and obtained as a single product.
  • the state of the art comprises many fabric products comprising a top layer and a lower layer, and an intermediate nonconductive layer therebetween, such that when pressing the layers towards each other, its electrical properties change at the pressure points, and a sensor is obtained.
  • EP1756538 discloses a textile pressure sensor with a flexible design which can be adapted to different shapes of load and comprising a sandwich construction with electrodes at each side of a central compressible layer.
  • the compressible layer has a reversible effect and is applied onto a flexible base electrode layer and is covered by an insulating layer.
  • the sensor is completed by a pattern of flexible electrodes of selected shapes applied to the insulating layer and with each electrode with a separate connection to a processor.
  • GB2443208 discloses a textile pressure sensing element constructed from electro-conductive yarns as a single sheet of fabric.
  • the elements include multiple compressible junctions, each junction comprising two overlapping electro-conductive yarns separated by a gap.
  • the gap is filled with a resilient compressible material.
  • the sensor may be a capacitive sensor where the gap is filled with a dielectric material. By measuring the capacitance of the overlapping conductors the size of the gap, and thus the force applied to the junction is measured in order to determine pressure.
  • the sensor may be a resistive sensor where the gap is filled with a compressible conductive material whose resistance varies with compression, and resistance is measured to determine applied force.
  • CA2665555 discloses a capacitance pressure mapping system which includes a plurality of sensor cells created by the intersection of electrode columns and rows, and a solid elastomer dielectric separating the electrode columns and rows.
  • the present invention proposes a fabric product comprising a top layer and a lower layer, the top layer comprising a series of alternate insulating strips and conductive strips, the bottom layer having low conductivity properties, characterised in that it comprises cross-yarns of low conductivity material extending from the bottom layer to the conductive strips of the top layer.
  • This fabric can be made in a warp knitting machine, i.e., in a single process, and provides for the basic part of a sensing fabric, when a third conductive layer equal to top layer is added at the bottom of the lower layer.
  • This conductive surface could be the fabric itself, as shown below and claimed in claim 12.
  • the fabric product comprises an intermediate layer having low conductivity or insulating properties knitted with the top layer and the lower layer, the cross yarns extending through said intermediate layer.
  • the fabric can be a spacer warp knitting machine too.
  • This intermediate layer ensures a positive relation between pressure and conductivity, such that the sensor made with the fabric is able to measure electrical response in a direct relation with the applied pressure with high dimensional stability.
  • the inventive fabric can have the following optional features, taken alone or in combination:
  • a second object of the invention is a sensing fabric comprising two inventive fabrics as set above, wherein the two fabrics are placed with the lower layers of both fabrics in contact, the strips of the two fabrics being non-parallel, and preferably perpendicularly arranged.
  • Another object of the invention is a seat, mattress or floor provided with the latter sensing fabric.
  • the invention relates to a fabric product 1 comprising a top layer 2 and a lower layer 3, the top layer 2 comprising a series of alternate insulating strips 4 and conductive strips 5, the bottom layer 3 having low conductivity properties.
  • the inventive fabric comprises cross-yarns 6 of low conductivity material extending from the bottom layer 3 to the conductive strips 5 of the top layer 2.
  • This fabric can be made in a single bar Raschel machine.
  • This inventive fabric when arranged on a conductive surface, will behave as a sensor. By establishing a voltage between the conductive surface and the conductive strips and pressing the fabric, the fabric becomes conductive at the pressure points, thus allowing it to be used as a switch or a pressure sensor.
  • the fabric is structured in different layers, each layer with its material and knitting properties to make the fabric change its electrical properties when pressure applied to it.
  • the top and the bottom layer are conductive and act as electrodes. Between these both conductive layers a certain configuration of yarns with insulating and specific conductivity properties are knitted.
  • the fabric is not pressed, there is no physical contact between the conductive yarns and the yarns of specific conductivity properties, so that conductivity between both electrodes is zero.
  • the fabric is pressed, physical contacts between the conductive and these yarns with specific conductivity start to happen and conductivity paths are created. The more pressure applied, the more physical contacts between these yarns, and the higher is the conductivity (lower the resistance).
  • the inventive fabric comprises a top layer 2 provided with a series of alternate insulating strips 4, conductive strips 5 and heating strips 8, the insulating strips 4 being inserted between the conductive strips 5 and the heating strips 8.
  • the heating function is ensured because conductive yarns increase their temperature when current circulates along them. Specific heating strips with certain conductive yarns are knitted to obtain this function separately from the pressure sensor function. Between both functions - that means, between both strips- insulating strips are knitted to avoid any current circulating between the heating and the sensing yarns.
  • the fabric comprises an intermediate layer 7 having low conductivity properties weaved with the top layer 2 and the lower layer 3, the cross yarns 6 extending through said intermediate layer 7.
  • This intermediate layers also avoid a direct contact between the electrode layers to avoid any short circuit.
  • the inventive fabric comprises a top layer 2 provided with a series of alternate insulating strips 4, conductive strips 5 and heating strips 8, the insulating strips 4 being inserted between the conductive strips 5 and the heating strips 8 and an intermediate layer 7 having low conductivity properties weaved with the top layer 2 and the lower layer 3.
  • Another object of the invention is a sensing fabric comprising two fabrics 1 according to any of the inventive embodiments previously described, wherein the two fabrics are placed with the lower layers of both fabrics in contact, the strips of the two fabrics being non-parallel, and preferably perpendicularly arranged, i.e., in an analogous manner as disclosed in CA2665555 .
  • the sensing fabric can be applied to seats, for example a vehicle seat, a theatre or stadium seat. It can be applied to mattresses or heating floors too.
  • the sensing fabric can be used in keyboards, button boards or joysticks.
  • Figure 4 shows a yarn arrangement that can be carried out with a single bar Raschel machine. Specifically it comprises a multi-filament of bottom layer 3, a cross-yarn with piezoresistive properties 6, a multifilament of intermediate layer 7, a conductive yarn 5, an Insulating yarn 4 and a heating yarn 8.
  • Figure 5 shows a yarn arrangement that can be carried out with a double bar Raschel machine, which allow for obtaining a spacer warp knitting fabric, which has to be understood as a fabric with an intermediate that provides for a relatively thick fabric.
  • This one comprises two multi-filaments of bottom layer 3a and 3b, a cross-yarn with piezoresistive properties 6, a monofilament of intermediate layer 7, a conductive yarn 5, an Insulating yarn 4 and a heating yarn 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Surface Heating Bodies (AREA)
  • Knitting Of Fabric (AREA)
  • Woven Fabrics (AREA)
EP12197198.0A 2012-12-14 2012-12-14 Stoffprodukt und daraus hergestellter Sensorstoff Active EP2743387B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12197198.0A EP2743387B1 (de) 2012-12-14 2012-12-14 Stoffprodukt und daraus hergestellter Sensorstoff
ES12197198.0T ES2669196T3 (es) 2012-12-14 2012-12-14 Producto de tejido y tejido de detección fabricado del mismo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12197198.0A EP2743387B1 (de) 2012-12-14 2012-12-14 Stoffprodukt und daraus hergestellter Sensorstoff

Publications (2)

Publication Number Publication Date
EP2743387A1 true EP2743387A1 (de) 2014-06-18
EP2743387B1 EP2743387B1 (de) 2018-02-14

Family

ID=47559128

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12197198.0A Active EP2743387B1 (de) 2012-12-14 2012-12-14 Stoffprodukt und daraus hergestellter Sensorstoff

Country Status (2)

Country Link
EP (1) EP2743387B1 (de)
ES (1) ES2669196T3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105386220A (zh) * 2015-10-16 2016-03-09 浙江青松轻纺股份有限公司 一种防污抑菌抗静电超细经编面料及其加工工艺
CN111270393A (zh) * 2020-02-25 2020-06-12 江南大学 智能床垫用纬编双向提花结构柔性传感器设计及织造方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1756538A1 (de) 2004-06-09 2007-02-28 ETH Zürich, ETH Transfer Textiler kapazitiver drucksensor
DE102006038612A1 (de) * 2006-08-17 2008-02-28 Müller Textil GmbH Abstandsgewirke mit eingewirkten Leiterfäden
GB2443208A (en) 2006-10-27 2008-04-30 Studio 1 Ventures Ltd Textile pressure sensor
EP2108724A1 (de) 2008-04-07 2009-10-14 SCHÖNHERR Textilmaschinenbau GmbH Verfahren zur Herstellung einer heizenden Textilbahn und heizende Textilbahn
DE102008034937A1 (de) * 2008-07-26 2010-02-04 Müller Textil GmbH Abstandsgewirke und Verfahren zu dessen Herstellung
US7712826B2 (en) 2004-09-16 2010-05-11 Kongsberg Automotive Ab Heated seat for a vehicle seat
EP2204482A1 (de) 2009-01-06 2010-07-07 MDB Texinov SA Textile Heizstruktur
DE102009013250B3 (de) * 2009-03-14 2010-07-15 Müller Textil GmbH Gewirkeabschnitt, insbesondere zur Verwendung als Heizeinlage, sowie Verfahren zur Herstellung eines Gewirkes
CA2665555A1 (en) 2009-05-06 2010-11-06 Xsensor Technology Corporation Dielectric textured elastomer in a pressure mapping system
WO2011117413A1 (en) 2010-03-26 2011-09-29 Iee International Electronics & Engineering S.A. Occupant sensing and heating textile

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1756538A1 (de) 2004-06-09 2007-02-28 ETH Zürich, ETH Transfer Textiler kapazitiver drucksensor
US7712826B2 (en) 2004-09-16 2010-05-11 Kongsberg Automotive Ab Heated seat for a vehicle seat
DE102006038612A1 (de) * 2006-08-17 2008-02-28 Müller Textil GmbH Abstandsgewirke mit eingewirkten Leiterfäden
GB2443208A (en) 2006-10-27 2008-04-30 Studio 1 Ventures Ltd Textile pressure sensor
EP2108724A1 (de) 2008-04-07 2009-10-14 SCHÖNHERR Textilmaschinenbau GmbH Verfahren zur Herstellung einer heizenden Textilbahn und heizende Textilbahn
DE102008034937A1 (de) * 2008-07-26 2010-02-04 Müller Textil GmbH Abstandsgewirke und Verfahren zu dessen Herstellung
EP2204482A1 (de) 2009-01-06 2010-07-07 MDB Texinov SA Textile Heizstruktur
DE102009013250B3 (de) * 2009-03-14 2010-07-15 Müller Textil GmbH Gewirkeabschnitt, insbesondere zur Verwendung als Heizeinlage, sowie Verfahren zur Herstellung eines Gewirkes
CA2665555A1 (en) 2009-05-06 2010-11-06 Xsensor Technology Corporation Dielectric textured elastomer in a pressure mapping system
WO2011117413A1 (en) 2010-03-26 2011-09-29 Iee International Electronics & Engineering S.A. Occupant sensing and heating textile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105386220A (zh) * 2015-10-16 2016-03-09 浙江青松轻纺股份有限公司 一种防污抑菌抗静电超细经编面料及其加工工艺
CN111270393A (zh) * 2020-02-25 2020-06-12 江南大学 智能床垫用纬编双向提花结构柔性传感器设计及织造方法
CN111270393B (zh) * 2020-02-25 2021-06-25 江南大学 智能床垫用纬编双向提花结构柔性传感器设计及织造方法

Also Published As

Publication number Publication date
ES2669196T3 (es) 2018-05-24
EP2743387B1 (de) 2018-02-14

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