FR2427577A1 - Procede et appareil de mesure capacitive d'un fil, avec etalonnage automatique - Google Patents

Procede et appareil de mesure capacitive d'un fil, avec etalonnage automatique

Info

Publication number
FR2427577A1
FR2427577A1 FR7910024A FR7910024A FR2427577A1 FR 2427577 A1 FR2427577 A1 FR 2427577A1 FR 7910024 A FR7910024 A FR 7910024A FR 7910024 A FR7910024 A FR 7910024A FR 2427577 A1 FR2427577 A1 FR 2427577A1
Authority
FR
France
Prior art keywords
signal
gain
thread
simulation
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.)
Granted
Application number
FR7910024A
Other languages
English (en)
Other versions
FR2427577B1 (fr
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.)
MICRO SENSORS Inc
Original Assignee
MICRO SENSORS 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
Priority claimed from US05/898,120 external-priority patent/US4208625A/en
Application filed by MICRO SENSORS Inc filed Critical MICRO SENSORS Inc
Publication of FR2427577A1 publication Critical patent/FR2427577A1/fr
Application granted granted Critical
Publication of FR2427577B1 publication Critical patent/FR2427577B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
    • G01D18/002—Automatic recalibration
    • G01D18/006—Intermittent recalibration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to presence of irregularities in running material, e.g. for severing the material at irregularities ; Control of the correct working of the yarn cleaner
    • B65H63/062—Electronic slub detector
    • B65H63/064—Electronic slub detector using capacitor sensing means, i.e. the defect signal is a variation of impedance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/12—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring diameters
    • G01B7/125—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring diameters of objects while moving
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/06—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for operation by a null method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Quality & Reliability (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

L'invention concerne un procédé et un appareil de mesure d'une caractéristique d'un fil, avec un étalonnage automatique. Le fil passe dans un pont capacitif dont le signal de sortie est démodulé et appliqué à un circuit d'étalonnage automatique. Le fil est sorti périodiquement du capteur et un détecteur détecte le fait et déclenche une séquence de compensation automatique de zéro et une séquence de compensation automatique de gain dans lesquelles des signaux numériques de compensation sont produits et mémorises. Ces signaux sont ensuite combinés avec le signal de mesure de manière à obtenir un signal qui est une mesure absolue précise d'une caractéristique du fil. L'invention s'applique notamment à la mesure de la finesse d'un fil exprimée en deniers.
FR7910024A 1978-04-20 1979-04-20 Procede et appareil de mesure capacitive d'un fil, avec etalonnage automatique Granted FR2427577A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/898,120 US4208625A (en) 1976-02-23 1978-04-20 Capacitive measuring system with automatic calibration

Publications (2)

Publication Number Publication Date
FR2427577A1 true FR2427577A1 (fr) 1979-12-28
FR2427577B1 FR2427577B1 (fr) 1984-02-24

Family

ID=25408975

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7910024A Granted FR2427577A1 (fr) 1978-04-20 1979-04-20 Procede et appareil de mesure capacitive d'un fil, avec etalonnage automatique

Country Status (7)

Country Link
JP (1) JPS55484A (fr)
CA (1) CA1114913A (fr)
CH (1) CH642168A5 (fr)
DE (1) DE2915557A1 (fr)
FR (1) FR2427577A1 (fr)
IT (1) IT1112384B (fr)
NL (1) NL7903130A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10346599A1 (de) * 2003-10-04 2005-04-21 Saurer Gmbh & Co Kg Verfahren und Vorrichtung zur Überwachung eines Fadens
CN113636393B (zh) * 2021-07-02 2023-04-25 中国船舶重工集团公司第七一三研究所 一种全自动微米级透明薄膜流延卷绕端面平齐控制装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1485608A (fr) * 1966-04-01 1967-06-23 Siderurgie Fse Inst Rech Procédé de tarage d'appareils d'analyse et dispositif de mise en oeuvre
US3681577A (en) * 1970-10-30 1972-08-01 Technicon Instr Automatic calibration apparatus
US3886786A (en) * 1971-09-20 1975-06-03 Borg Warner Null memory system for a gas analysis system
DE2437438B1 (de) * 1974-08-02 1976-02-12 Fraunhofer Ges Forschung Verfahren vorrichtung zur steigerung der genauigkeit analoger messvorg[nge bei registrierung mittels digitaler systeme.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1485608A (fr) * 1966-04-01 1967-06-23 Siderurgie Fse Inst Rech Procédé de tarage d'appareils d'analyse et dispositif de mise en oeuvre
US3681577A (en) * 1970-10-30 1972-08-01 Technicon Instr Automatic calibration apparatus
US3886786A (en) * 1971-09-20 1975-06-03 Borg Warner Null memory system for a gas analysis system
DE2437438B1 (de) * 1974-08-02 1976-02-12 Fraunhofer Ges Forschung Verfahren vorrichtung zur steigerung der genauigkeit analoger messvorg[nge bei registrierung mittels digitaler systeme.

Also Published As

Publication number Publication date
IT1112384B (it) 1986-01-13
NL7903130A (nl) 1979-10-23
CH642168A5 (en) 1984-03-30
FR2427577B1 (fr) 1984-02-24
CA1114913A (fr) 1981-12-22
JPS55484A (en) 1980-01-05
IT7921979A0 (it) 1979-04-19
DE2915557A1 (de) 1979-10-31

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Legal Events

Date Code Title Description
ST Notification of lapse