WO2018091620A1 - Capteur à structure de fils - Google Patents

Capteur à structure de fils Download PDF

Info

Publication number
WO2018091620A1
WO2018091620A1 PCT/EP2017/079522 EP2017079522W WO2018091620A1 WO 2018091620 A1 WO2018091620 A1 WO 2018091620A1 EP 2017079522 W EP2017079522 W EP 2017079522W WO 2018091620 A1 WO2018091620 A1 WO 2018091620A1
Authority
WO
WIPO (PCT)
Prior art keywords
thread
electrode
sensor
moisture
formation according
Prior art date
Application number
PCT/EP2017/079522
Other languages
German (de)
English (en)
Inventor
Heiko Kochmann
Original Assignee
Amann & Söhne GmbH & Co. KG
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 Amann & Söhne GmbH & Co. KG filed Critical Amann & Söhne GmbH & Co. KG
Priority to DE112017005836.8T priority Critical patent/DE112017005836A5/de
Publication of WO2018091620A1 publication Critical patent/WO2018091620A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G01M3/165—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means by means of cables or similar elongated devices, e.g. tapes
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/441—Yarns or threads with antistatic, conductive or radiation-shielding properties
    • 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
    • D10B2401/00—Physical properties
    • D10B2401/02—Moisture-responsive characteristics

Definitions

  • the invention relates to a sensor filament for moisture detection in an extended object area such as a vehicle cavity or a building.
  • the invention further relates to a circuit arrangement for measuring moisture with a sensor filament formation.
  • the object of the invention is to improve the textile sensors known in the state of the art and to provide a linear sensor structure which can be laid without difficulty even in a difficult-to-reach or extended object area, being insensitive to damage and easy detection of moisture or water access to the structure allowed.
  • the invention is based on forming two torsion-free linear electrodes by special cladding as a moisture sensor. Accordingly, it is proposed according to the invention that the sensor filament formation comprises an electrically conductive inner electrode thread, an inner jacket electrically insulating the inner electrode thread, an electrically conductive outer electrode thread running outside the inner jacket along the inner electrode thread, and a coextensive inner jacket and the outer electrode thread, moisture-permeable outer sheath, wherein the electrical resistance or the electrical capacitance between the electrode threads by moisture influence on the inner shell is variable.
  • the inner jacket so the sensitivity can be suitably influenced while the outer jacket provides protection against unwanted contamination or mechanical damage.
  • a largely direction-independent flexible structure is defined, which can also be easily moved around corners. In principle, the construction of the structure allows unproblematic, virtually endless processing.
  • the inner and / or outer jacket is provided with a plurality of moisture-permeable openings.
  • openings can be easily created and dimensioned, in particular as thread spaces, when the inner and / or outer sheath is formed as a tubular textile structure.
  • a further improvement in this direction results from the fact that the inner and / or outer sheath is formed as a braiding, wrapping, or Umwin- formation of an electrically non-conductive thread material.
  • the inner and / or outer sheath is formed from synthetic fibers, natural fibers, mineral or inorganic fibers, or mixtures thereof.
  • the inner jacket consists of a moisture-absorbing material.
  • the electrode threads are selected from the group wire or strand of metal, in particular of brass or copper; carbon fiber; metal-coated mono- or multifilament.
  • the electrode threads run side by side without mutual twisting, so that consistent properties are achieved over a short period of time with little use of material.
  • a particularly advantageous embodiment provides that the outer casing is provided all around with a self-adhesive adhesive structure. This considerably simplifies and reliably ensures the intended positioning in an object area.
  • the self-adhesive structure consists of a pressure sensitive adhesive, preferably based on acrylate. It is understood that the adhesive structure should allow the passage of moisture as completely as possible, for example, by only the thread material of the outer shell is coated adhesive.
  • the electrode threads In order to simplify the connection of a measuring device, it is expedient for the electrode threads to have at least one of their ends an externally accessible contact point led out of the sensor body.
  • the invention also relates to a circuit arrangement for measuring moisture with a sensor filament structure according to the invention and a measuring unit connected to one end of the electrode filaments for a resistance measurement or capacitive measurement between the electrode filaments.
  • an evaluation unit acted upon by a signal of the measuring unit is configured to determine the presence of moisture from a signal change or signal level.
  • a simple control function can be realized by connecting a test unit for checking the function of the electrode threads at their two ends for a measurement of the respective contact resistance.
  • Fig. 1 shows a circuit arrangement for measuring moisture with a sensor filament formation in a partially broken-perspective, partly schematic view;
  • Fig. 2 is a circuit diagram of the circuit arrangement.
  • the sensory thread structure 10 shown in the drawing comprises a linearly elongated, electrically conductive inner electrode thread 12, an inner sheath 14 electrically insulating the inner electrode thread 12, an electrically conductive outer electrode thread 16 running next to the inner electrode thread 12 outside of the inner sheath 14 and one the inner shell 14 and the outer
  • This filament structure 10 is characterized in that the electrical resistance or the electrical capacitance between the electrode filaments 12, 16 is variable by the influence of moisture on the inner jacket 14.
  • the thread structure 10 can be connected at one end via contact points 20, 22 at its electrode threads 12, 16 to a measuring unit 24 for a resistance or capacitance measurement, wherein an evaluation unit 26 acted upon by a signal of the measuring unit 24 is adapted to a signal change or signal height to determine the presence of moisture at least qualitatively.
  • the linear elongated thread structure 10 can be laid in a difficult to reach and / or extended object area 28, for example in a cavity of a vehicle or a building, to carry out a moisture monitoring, for example, for a tightness check or checking the drying condition.
  • the outer shell 18 can be provided with a self-adhesive adhesive structure 30.
  • This adhesive structure 30 may suitably consist of acrylate-based coating of a pressure-sensitive adhesive.
  • the electrode threads 12 16 may be formed of a metal wire, in particular of brass.
  • Moisture detection in the thread formation 10 is made possible by providing the inner and outer sheaths 14, 18 with a plurality of moisture-permeable openings 32. These are created as thread gaps by the inner and outer sheaths 14, 18 being designed as a textile tube 34. In the example shown, this is a braid of an electrically non-conductive thread material 36 from Polyester or polyamide provided. The laying of the threads is not perpendicular as in weaving, but under diagonal crossing relative to the sensor longitudinal axis. The compression of the gaps can be easily adjusted.
  • the outer sheath 18 should be easily permeable to moisture or water, it is conceivable that the inner sheath 14 also absorbs moisture and for this purpose consists of a suitable material, such as natural fibers such as cotton.
  • the electrical conductivity between the electrode threads 12, 16 is increased, which can be detected by a resistance measurement.
  • the electrical capacitance between the electrode threads 12, 16 also increases.
  • the cause here is the very high dielectric constant of the water in comparison to the insulating thread material in the dry state. Also, by measuring the capacitance, the moisture content of the inner jacket 14 can be easily determined.
  • 2 shows a section of the thread structure 10 in a schematic cross section with a measuring unit 24 suitable for resistance or capacitance measurement. In order to enable functional testing of the electrode threads 12, 16, for example, for breakage, a testing device 24 'can be used at the respective thread ends for a electrical continuity test are connected.
  • the thread structure 10 can be adjusted appropriately.
  • the flexibility can be influenced, above all, by the rigidity of the electrode threads 12, 16.
  • a flexible core in the form of a core thread that runs parallel to the inner electrode thread 12 can also be set.
  • Materials for this additional core are preferably monofilaments of synthetic fibers.
  • the layer thickness and the Fadenmatenal the inner shell 14 can be selected appropriately. The response can be improved by increasing the capillary action of the inner jacket 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

L'invention concerne un capteur à structure de fils pour la détection d'humidité dans une zone d'objet étendue. Le capteur comprend un fil d'électrode intérieur (12) électro-conducteur, une enveloppe intérieure (14) enveloppant le fil d'électrode intérieur (12), un fil d'électrode extérieur (16) électro-conducteur, s'étendant à l'extérieur de l'enveloppe intérieure (14) le long du fil d'électrode intérieur (12), et une enveloppe extérieure (18) enveloppant conjointement l'enveloppe intérieure (14) et le fil d'électrode extérieur (16) et perméable à l'humidité. La résistance électrique ou la capacité électrique entre les fils d'électrode (12, 16) peut être modifiée par l'effet de l'humidité sur l'enveloppe intérieure (14).
PCT/EP2017/079522 2016-11-18 2017-11-16 Capteur à structure de fils WO2018091620A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112017005836.8T DE112017005836A5 (de) 2016-11-18 2017-11-16 Sensorfadengebilde

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016122272.0A DE102016122272A1 (de) 2016-11-18 2016-11-18 Sensorfadengebilde
DE102016122272.0 2016-11-18

Publications (1)

Publication Number Publication Date
WO2018091620A1 true WO2018091620A1 (fr) 2018-05-24

Family

ID=60452631

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/079522 WO2018091620A1 (fr) 2016-11-18 2017-11-16 Capteur à structure de fils

Country Status (2)

Country Link
DE (2) DE102016122272A1 (fr)
WO (1) WO2018091620A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018210036A1 (de) * 2018-06-20 2019-12-24 Robert Bosch Gmbh Textiles Element, sowie Dichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60196638A (ja) * 1984-03-19 1985-10-05 Tatsuta Electric Wire & Cable Co Ltd 電解質溶液検知線
US4553432A (en) * 1982-07-10 1985-11-19 Reinhold Barlian Temperature-humidity surveillance equipment
EP0341933A2 (fr) * 1988-05-09 1989-11-15 Junkosha Co. Ltd. Palpeur de fuite pour liquides électriquement conductifs
JPH02216426A (ja) * 1989-02-17 1990-08-29 Junkosha Co Ltd 検知センサ
DE10342787A1 (de) 2002-09-14 2004-05-13 W. Zimmermann Gmbh & Co. Kg Elektrisch leitfähiges Garn

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553432A (en) * 1982-07-10 1985-11-19 Reinhold Barlian Temperature-humidity surveillance equipment
JPS60196638A (ja) * 1984-03-19 1985-10-05 Tatsuta Electric Wire & Cable Co Ltd 電解質溶液検知線
EP0341933A2 (fr) * 1988-05-09 1989-11-15 Junkosha Co. Ltd. Palpeur de fuite pour liquides électriquement conductifs
JPH02216426A (ja) * 1989-02-17 1990-08-29 Junkosha Co Ltd 検知センサ
DE10342787A1 (de) 2002-09-14 2004-05-13 W. Zimmermann Gmbh & Co. Kg Elektrisch leitfähiges Garn

Also Published As

Publication number Publication date
DE112017005836A5 (de) 2019-08-08
DE102016122272A1 (de) 2018-05-24

Similar Documents

Publication Publication Date Title
EP3301210B1 (fr) Fil détecteur de lumière
DE69310244T2 (de) Kabel zur Lecküberwachung von Flüssigkeit
EP2434050B1 (fr) Corde comportant un capteur
DE102006051323A1 (de) Schnurschalter und diesen verwendende Detektionseinrichtung
DE102008058882A1 (de) Faserverstärkte Kunststoffstruktur
DE10325624B3 (de) Luftfeder mit Niveaumesseinrichtung
WO2016087279A1 (fr) Volant pour un véhicule automobile, doté d'un système de détection et procédé pour détecter la présence d'une main humaine dans une zone de préhension d'un volant
WO2018091620A1 (fr) Capteur à structure de fils
EP0414854B1 (fr) Cable de reperage de liquides
EP1855042A2 (fr) Conduite flexible transportant des liquides
EP2495733B1 (fr) Câble électrique flexible
DE102006015878B4 (de) Flexible elektrische Steuerleitung
DE102008003122A1 (de) Faden zur Ermittlung der Zugspannung, insbesondere in einem medizinischen Gestrick oder Gewirk
EP1451497A1 (fr) Tuyau en matiere plastique, notamment tuyau pneumatique
EP2441867A1 (fr) Capteur d'extension et procédé de mesure d'une extension d'un textile
DE102004025237B4 (de) Textiler Druck- und Zugsensor
EP0423258A1 (fr) Cable de reperage de liquides.
DE102014204864A1 (de) Triboelektrischer Aufprallsensor für ein Kraftfahrzeug mit Leiterabschlusselement
DE3606836A1 (de) Wellenleiter-sensor fuer zugkraefte und messeinrichtung hierzu
DE102015002790B4 (de) Fluidleitung, insbesondere Wasserleitung
DE102006043714B4 (de) Technische Schmaltextilie, wie Sicherheitsgurt, Spanngurt, Traggurt, Zurrgurt oder dergleichen Mittel aus gewebten textilen Filamentfäden
DE102014204867A1 (de) Triboelektrischer Aufprallsensor für ein Kraftfahrzeug mit beidseitiger Ladungsverstärkerschaltung
EP3074984B1 (fr) Câble à haute tension
DE3127244C2 (de) Überwachungseinrichtung
DE1490609A1 (de) Elektrisches Kabel,insbesondere Fernmeldekabel,mit einem oder mehreren Pruefleitern fuer die UEberwachung der Dichtigkeit des Kabelmantels

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17804143

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: R225

Ref document number: 112017005836

Country of ref document: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17804143

Country of ref document: EP

Kind code of ref document: A1