FR2461233A1 - Appareil de mesure de distance par courants de foucault utilisant un amplificateur a reaction positive - Google Patents

Appareil de mesure de distance par courants de foucault utilisant un amplificateur a reaction positive Download PDF

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Publication number
FR2461233A1
FR2461233A1 FR8015249A FR8015249A FR2461233A1 FR 2461233 A1 FR2461233 A1 FR 2461233A1 FR 8015249 A FR8015249 A FR 8015249A FR 8015249 A FR8015249 A FR 8015249A FR 2461233 A1 FR2461233 A1 FR 2461233A1
Authority
FR
France
Prior art keywords
amplifier
oscillator
coil
frequency
circuit
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
FR8015249A
Other languages
English (en)
French (fr)
Other versions
FR2461233B1 (enrdf_load_html_response
Inventor
Kazuo Sano
Seigo Ando
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.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
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 Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Publication of FR2461233A1 publication Critical patent/FR2461233A1/fr
Application granted granted Critical
Publication of FR2461233B1 publication Critical patent/FR2461233B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/023—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring distance between sensor and object

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
FR8015249A 1979-07-12 1980-07-09 Appareil de mesure de distance par courants de foucault utilisant un amplificateur a reaction positive Granted FR2461233A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8747279A JPS5612502A (en) 1979-07-12 1979-07-12 Feedback amplification type vortex flow range finder

Publications (2)

Publication Number Publication Date
FR2461233A1 true FR2461233A1 (fr) 1981-01-30
FR2461233B1 FR2461233B1 (enrdf_load_html_response) 1983-05-13

Family

ID=13915846

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8015249A Granted FR2461233A1 (fr) 1979-07-12 1980-07-09 Appareil de mesure de distance par courants de foucault utilisant un amplificateur a reaction positive

Country Status (4)

Country Link
JP (1) JPS5612502A (enrdf_load_html_response)
DE (1) DE3026389C2 (enrdf_load_html_response)
FR (1) FR2461233A1 (enrdf_load_html_response)
GB (1) GB2054867B (enrdf_load_html_response)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3409448A1 (de) * 1983-03-16 1984-09-20 Thyssen Industrie Ag, 4300 Essen Verfahren und vorrichtung zur bestimmung des abstandes einer magnetischen sonde von einer leitfaehigen reaktionsschiene
GB2136580B (en) * 1983-03-16 1987-11-18 Thyssen Industrie Method and apparatus for determining the distance from a conductor
JPS6093316A (ja) * 1983-10-27 1985-05-25 Nippon Kokan Kk <Nkk> 渦流式湯面レベル測定法
DE3420330C1 (de) * 1984-05-30 1985-12-05 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln Induktiver Sensor und Verfahren zur beruehrungslosen,dreidimensionalen Positionserfassung von Loechern,Bohrungen,Bolzen,Niete u.ae. in bzw. an Metallteilen mittels eines solchen Sensors
JPS6114501A (ja) * 1984-06-30 1986-01-22 Nippon Kokan Kk <Nkk> 渦流式距離計
IT1209599B (it) * 1984-11-15 1989-08-30 Siette Spa Sistema di rilevamento di livello per veicoli.
FR2575820B1 (fr) * 1985-01-10 1992-07-24 Equip Construction Electriq Procede et dispositif pour mesurer la distance entre une cible et un capteur
SE456606B (sv) * 1987-02-18 1988-10-17 Tornbloms Kvalitetskontroll Ab Anordning for metning och/eller provning av dimension och/eller form via avstandsmetning
DE3815010A1 (de) * 1988-04-30 1989-11-09 Leybold Ag Schaltungsanordnung fuer den kombinierten einsatz einer induktiven und einer kapazitiven einrichtung fuer die zerstoerungsfreie messung des ohmschen wiederstands duenner schichten
FR2638837A1 (fr) * 1988-11-10 1990-05-11 Phytrans Procede de detection de la derive en temperature du signal de reponse d'un capteur inductif et dispositif pour sa mise en oeuvre
US5854553A (en) * 1996-06-19 1998-12-29 Skf Condition Monitoring Digitally linearizing eddy current probe
AU1145797A (en) * 1995-12-05 1997-06-27 Skf Condition Monitoring Driver for eddy current proximity probe
JP2017054354A (ja) 2015-09-10 2017-03-16 株式会社東芝 厚さ検出装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3213694A (en) * 1963-03-11 1965-10-26 Palomar Scient Corp Stabilized transducer system for measuring displacement and acceleration

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851242A (en) * 1972-06-27 1974-11-26 J Ellis Frequency-modulated eddy-current proximity gage
GB1512799A (en) * 1974-11-06 1978-06-01 Nippon Kokan Kk Apparatus for non-contact measurement of distance between a metallic body and a detection coil
US4160204A (en) * 1974-11-11 1979-07-03 Kaman Sciences Corporation Non-contact distance measurement system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3213694A (en) * 1963-03-11 1965-10-26 Palomar Scient Corp Stabilized transducer system for measuring displacement and acceleration

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/77 *

Also Published As

Publication number Publication date
DE3026389C2 (de) 1984-04-19
JPS5612502A (en) 1981-02-06
GB2054867A (en) 1981-02-18
GB2054867B (en) 1983-06-29
JPS623881B2 (enrdf_load_html_response) 1987-01-27
DE3026389A1 (de) 1981-01-15
FR2461233B1 (enrdf_load_html_response) 1983-05-13

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