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CA984463A - Eddy current sensor - Google Patents

Eddy current sensor

Info

Publication number
CA984463A
CA984463A CA166,995A CA166995A CA984463A CA 984463 A CA984463 A CA 984463A CA 166995 A CA166995 A CA 166995A CA 984463 A CA984463 A CA 984463A
Authority
CA
Canada
Prior art keywords
current sensor
eddy current
eddy
sensor
current
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.)
Expired
Application number
CA166,995A
Other versions
CA166995S (en
Inventor
George A. Gallant
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.)
Simmonds Precision Products Inc
Original Assignee
Simmonds Precision Products 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 Simmonds Precision Products Inc filed Critical Simmonds Precision Products Inc
Application granted granted Critical
Publication of CA984463A publication Critical patent/CA984463A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/028—Electrodynamic magnetometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/484—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by contact-making switches
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/49—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/025—Compensating stray fields

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
CA166,995A 1972-04-20 1973-03-21 Eddy current sensor Expired CA984463A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24586372A 1972-04-20 1972-04-20

Publications (1)

Publication Number Publication Date
CA984463A true CA984463A (en) 1976-02-24

Family

ID=22928395

Family Applications (1)

Application Number Title Priority Date Filing Date
CA166,995A Expired CA984463A (en) 1972-04-20 1973-03-21 Eddy current sensor

Country Status (7)

Country Link
JP (1) JPS4947807A (en)
CA (1) CA984463A (en)
CH (1) CH558532A (en)
DE (1) DE2319927A1 (en)
FR (1) FR2181078B1 (en)
GB (1) GB1386035A (en)
IT (1) IT984760B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2288313A1 (en) * 1974-10-17 1976-05-14 Jaeger Magnetic angular velocity or position sensor - has two cores with coils differently spaced from toothed ferromagnetic wheel
US4258279A (en) * 1978-09-05 1981-03-24 Orin W. Coburn Magnetic sensor assembly
DE3582783D1 (en) * 1984-11-20 1991-06-13 S G Kk DEVICE FOR DETECTING THE ROTATION.
GB2265221B (en) * 1992-03-21 1995-04-26 Schlumberger Ind Ltd Inductive sensors
GB2408802A (en) * 2003-12-03 2005-06-08 Weston Aerospace Eddy current sensors
GB2455798B (en) 2007-12-21 2010-04-28 Weston Aerospace Ltd Method and apparatus for monitoring a rotating shaft
GB2455800B (en) 2007-12-21 2010-07-21 Weston Aerospace Ltd Method and apparatus for monitoring the rotational speed of a shaft
GB2455801B (en) 2007-12-21 2010-04-28 Weston Aerospace Ltd Method and apparatus for monitoring the rotational speed of a shaft
CA2647306C (en) 2007-12-21 2018-09-04 Weston Aerospace Limited Method and apparatus for monitoring the rotational speed of a shaft
GB2455797B (en) 2007-12-21 2010-04-28 Weston Aerospace Ltd Method and apparatus for monitoring the rotational speed of a shaft
JP2012501445A (en) * 2008-08-29 2012-01-19 ゼネラル・エレクトリック・カンパニイ System and method for detecting the periodic position of an object
US7948229B2 (en) * 2008-08-29 2011-05-24 General Electric Company High temperature electronics for passive eddy current sensors
DE102010061955B4 (en) 2010-11-25 2014-03-13 Rolls-Royce Deutschland Ltd & Co Kg Inductive sensor
GB2576471A (en) 2018-01-09 2020-02-26 Weston Aerospace Ltd Magnetic gas turbine sensor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE933173C (en) * 1950-10-14 1955-09-22 Siemens Ag Test device, especially for electric traction vehicles, to display the rotary movement of a shaft

Also Published As

Publication number Publication date
JPS4947807A (en) 1974-05-09
IT984760B (en) 1974-11-20
FR2181078A1 (en) 1973-11-30
FR2181078B1 (en) 1977-09-02
GB1386035A (en) 1975-03-05
DE2319927A1 (en) 1973-10-31
CH558532A (en) 1975-01-31

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