IN2014DE00965A - - Google Patents

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Publication number
IN2014DE00965A
IN2014DE00965A IN965DE2014A IN2014DE00965A IN 2014DE00965 A IN2014DE00965 A IN 2014DE00965A IN 965DE2014 A IN965DE2014 A IN 965DE2014A IN 2014DE00965 A IN2014DE00965 A IN 2014DE00965A
Authority
IN
India
Prior art keywords
sensor
high frequency
sensor coils
electrical circuit
alternating current
Prior art date
Application number
Inventor
Marco Wolf
Martin Rieder
Original Assignee
Tyco Electronics Amp Gmbh
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 Tyco Electronics Amp Gmbh filed Critical Tyco Electronics Amp Gmbh
Publication of IN2014DE00965A publication Critical patent/IN2014DE00965A/en

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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
    • G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
    • 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
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/22—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
    • G01D5/2208—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the self-induction of the coils
    • G01D5/2241—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the self-induction of the coils by controlling the saturation of a magnetic circuit by means of a movable element, e.g. a magnet

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measuring Magnetic Variables (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

The invention relates to an improved contactless position sensor and a system incorporating same. Such a contactless position sensor comprises at least two sensor coils each comprising a magnetic permeable core and windings defining a coil axis. The at least two sensor coils are arranged with the coil axes essentially in parallel to each other. An electrical circuit of the sensor drives a predetermined alternating current within each of the at least two sensor coils and determines a high frequency voltage component of a voltage across each of the at least two sensor coils. The predetermined alternating current includes a low frequency current component, and a high frequency current component. The electrical circuit detects the position of a ferromagnetic target by subtracting from each other amplitude levels of the high frequency voltage components of two of the determined voltages and by comparing the subtraction result to a pre-determined reference pattern.
IN965DE2014 2013-04-10 2014-04-02 IN2014DE00965A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20130163196 EP2789985A1 (en) 2013-04-10 2013-04-10 Contactless position sensor and contactless position sensor system

Publications (1)

Publication Number Publication Date
IN2014DE00965A true IN2014DE00965A (en) 2015-06-05

Family

ID=48050571

Family Applications (1)

Application Number Title Priority Date Filing Date
IN965DE2014 IN2014DE00965A (en) 2013-04-10 2014-04-02

Country Status (5)

Country Link
US (1) US20140306693A1 (en)
EP (3) EP2789985A1 (en)
JP (1) JP2014206536A (en)
CN (1) CN104101292A (en)
IN (1) IN2014DE00965A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107907040B (en) * 2017-11-23 2019-04-23 华中科技大学 A kind of displacement sensing method and device based on AC magnetism bridge loop
CN112433360A (en) * 2019-08-26 2021-03-02 成都理想境界科技有限公司 Optical fiber scanner, detection positioning method and scanning display device
DE102019135278A1 (en) * 2019-12-19 2021-06-24 Endress+Hauser Flowtec Ag Method for operating a magnetic-inductive flow meter
US11808610B2 (en) 2021-02-09 2023-11-07 Asahi Kasei Microdevices Corporation Position detection apparatus, position detection system, and position detection method

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5697106A (en) * 1979-12-31 1981-08-05 Fanuc Ltd Controller for stopping in place for main shaft
EP0613807B1 (en) * 1991-11-29 1999-03-17 Seiko Epson Corporation Displacement in transfer apparatus and driving controller of transfer member
DE4418294A1 (en) 1994-05-26 1995-11-30 Vacuumschmelze Gmbh Magnetic field-induced pulse generator, in particular for speed detection of a shaft rotating in a housing
DE4425904A1 (en) * 1994-07-21 1996-01-25 Vacuumschmelze Gmbh Magnetic displacement sensor
DE19613402A1 (en) 1996-04-03 1997-10-09 Siemens Ag Current-compensated magnetic field sensor and use of the same in a rotation angle sensor
JP4367966B2 (en) * 1997-01-28 2009-11-18 ソニーマニュファクチュアリングシステムズ株式会社 Magnetic displacement detector
DE19805783C2 (en) * 1998-02-12 2000-06-08 Siemens Ag Arrangement for two-dimensional, contactless position determination of a measurement object
CN100523713C (en) * 2004-03-08 2009-08-05 G·勃兰特·泰勒 Induction sensor
CN100541136C (en) * 2004-06-25 2009-09-16 Nxp股份有限公司 The device that comprises magnetic field sensor
JP5241002B2 (en) * 2008-07-23 2013-07-17 東京パーツ工業株式会社 Magnetic sensor and actuator using the magnetic sensor
DE102008063527A1 (en) * 2008-12-18 2010-07-01 Micro-Epsilon Messtechnik Gmbh & Co. Kg Circuit arrangement and method for evaluating a sensor
JP5375796B2 (en) * 2010-11-05 2013-12-25 株式会社デンソー Rotation angle detection device and electric power steering device using the same

Also Published As

Publication number Publication date
EP2789985A1 (en) 2014-10-15
US20140306693A1 (en) 2014-10-16
JP2014206536A (en) 2014-10-30
CN104101292A (en) 2014-10-15
EP2789987A3 (en) 2015-02-18
EP2789986A1 (en) 2014-10-15
EP2789987A2 (en) 2014-10-15

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