CA2372866A1 - Proximity sensor method and apparatus that is insensitive to temperature, noise and length of wire - Google Patents

Proximity sensor method and apparatus that is insensitive to temperature, noise and length of wire Download PDF

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Publication number
CA2372866A1
CA2372866A1 CA002372866A CA2372866A CA2372866A1 CA 2372866 A1 CA2372866 A1 CA 2372866A1 CA 002372866 A CA002372866 A CA 002372866A CA 2372866 A CA2372866 A CA 2372866A CA 2372866 A1 CA2372866 A1 CA 2372866A1
Authority
CA
Canada
Prior art keywords
conductance
susceptance
sensor
target
detector
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.)
Abandoned
Application number
CA002372866A
Other languages
English (en)
French (fr)
Inventor
Stephen Forrest Rogoff
Leroy Ernest Vetsch
Nick Anthony Demma
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.)
Honeywell Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2372866A1 publication Critical patent/CA2372866A1/en
Abandoned legal-status Critical Current

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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
    • G01B7/02—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
    • 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
    • G01D3/02—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation
    • G01D3/022—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation having an ideal characteristic, map or correction data stored in a digital memory
    • 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
    • G01D5/2006—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 by influencing the self-induction of one or more coils
    • G01D5/2013—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 by influencing the self-induction of one or more coils by a movable ferromagnetic element, e.g. a core
    • 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
    • G01D5/2006—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 by influencing the self-induction of one or more coils
    • G01D5/202—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 by influencing the self-induction of one or more coils by movable a non-ferromagnetic conductive element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/101—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Technology Law (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
CA002372866A 1999-05-13 2000-05-15 Proximity sensor method and apparatus that is insensitive to temperature, noise and length of wire Abandoned CA2372866A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/311,100 1999-05-13
US09/311,100 US6424146B2 (en) 1999-05-13 1999-05-13 Proximity sensor method and apparatus that is insensitive to temperature, noise and length of wire
PCT/US2000/013354 WO2000070368A1 (en) 1999-05-13 2000-05-15 Proximity sensor method and apparatus that is insensitive to temperature, noise and length of wire

Publications (1)

Publication Number Publication Date
CA2372866A1 true CA2372866A1 (en) 2000-11-23

Family

ID=23205405

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002372866A Abandoned CA2372866A1 (en) 1999-05-13 2000-05-15 Proximity sensor method and apparatus that is insensitive to temperature, noise and length of wire

Country Status (5)

Country Link
US (1) US6424146B2 (enExample)
EP (1) EP1177464A1 (enExample)
JP (1) JP2002544527A (enExample)
CA (1) CA2372866A1 (enExample)
WO (1) WO2000070368A1 (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT412636B (de) * 2000-02-23 2005-05-25 Vae Eisenbahnsysteme Gmbh Einrichtung zur überwachung und prognose der ausfallwahrscheinlichkeit von induktiven näherungssensoren
DE50207002D1 (de) * 2001-04-12 2006-07-06 Micro Epsilon Messtechnik Schaltungsanordnung und verfahren zur temperaturkompensation
US7078906B2 (en) * 2003-09-23 2006-07-18 The Johns Hopkins University Simultaneous time-domain and frequency-domain metal detector
US6985822B2 (en) * 2003-11-26 2006-01-10 General Electric Company Methods and systems for proximity system target material variation effects reduction
US7548819B2 (en) * 2004-02-27 2009-06-16 Ultra Electronics Limited Signal measurement and processing method and apparatus
US7358720B1 (en) * 2006-01-25 2008-04-15 Simmonds Precision Products, Inc. Proximity sensor interface
JP4539614B2 (ja) * 2006-02-07 2010-09-08 株式会社デンソー 乗員検知システム
US8373425B2 (en) * 2007-04-06 2013-02-12 Hypertherm, Inc. Plasma insensitive height sensing
GB2504991B (en) 2012-08-17 2015-09-23 Ultra Electronics Ltd Proximity sensor monitor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5066912A (en) 1990-07-09 1991-11-19 Kwiatkowski Richard F Calibratable non-contact inductive distance measuring device
US5180978A (en) 1991-12-02 1993-01-19 Honeywell Inc. Proximity sensor with reduced temperature sensitivity using A.C. and D.C. energy
US5410488A (en) 1992-11-02 1995-04-25 Lorton Aerospace Company Proximity sensor gap measuring method and apparatus
US5691639A (en) * 1996-08-28 1997-11-25 Honeywell Inc. Proximity sensor circuit with frequency changing capability

Also Published As

Publication number Publication date
WO2000070368A1 (en) 2000-11-23
JP2002544527A (ja) 2002-12-24
EP1177464A1 (en) 2002-02-06
US20010052768A1 (en) 2001-12-20
US6424146B2 (en) 2002-07-23

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Legal Events

Date Code Title Description
FZDE Discontinued