WO2008061180A3 - Electromagnetic sensor systems - Google Patents

Electromagnetic sensor systems Download PDF

Info

Publication number
WO2008061180A3
WO2008061180A3 PCT/US2007/084798 US2007084798W WO2008061180A3 WO 2008061180 A3 WO2008061180 A3 WO 2008061180A3 US 2007084798 W US2007084798 W US 2007084798W WO 2008061180 A3 WO2008061180 A3 WO 2008061180A3
Authority
WO
WIPO (PCT)
Prior art keywords
sensor systems
electromagnetic sensor
electromagnetic
systems
position sensor
Prior art date
Application number
PCT/US2007/084798
Other languages
French (fr)
Other versions
WO2008061180A9 (en
WO2008061180A2 (en
Inventor
Brandt G Taylor
Steven E Beard
Original Assignee
Digisensors Inc
Brandt G Taylor
Steven E Beard
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 US11/846,907 external-priority patent/US7898244B2/en
Application filed by Digisensors Inc, Brandt G Taylor, Steven E Beard filed Critical Digisensors Inc
Publication of WO2008061180A2 publication Critical patent/WO2008061180A2/en
Publication of WO2008061180A9 publication Critical patent/WO2008061180A9/en
Publication of WO2008061180A3 publication Critical patent/WO2008061180A3/en

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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
    • F15B15/2861—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using magnetic means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

A variable inductance position sensor is described.
PCT/US2007/084798 2006-11-15 2007-11-15 Electromagnetic sensor systems WO2008061180A2 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US85913206P 2006-11-15 2006-11-15
US60/859,132 2006-11-15
US86118706P 2006-11-27 2006-11-27
US60/861,187 2006-11-27
US11/846,907 2007-08-29
US11/846,907 US7898244B2 (en) 2005-03-07 2007-08-29 Electromagnetic sensor systems

Publications (3)

Publication Number Publication Date
WO2008061180A2 WO2008061180A2 (en) 2008-05-22
WO2008061180A9 WO2008061180A9 (en) 2008-10-30
WO2008061180A3 true WO2008061180A3 (en) 2009-04-30

Family

ID=39402475

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/084798 WO2008061180A2 (en) 2006-11-15 2007-11-15 Electromagnetic sensor systems

Country Status (1)

Country Link
WO (1) WO2008061180A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5103172A (en) * 1989-04-08 1992-04-07 Festo Kg Piston and cylinder device with fixed conductive guide on periphery of cylinder
JPH06242199A (en) * 1993-02-15 1994-09-02 Yoshio Kido Magnetization measuring device having continuously measuring function
US5420507A (en) * 1992-09-28 1995-05-30 Edward L. Laskowski Method and apparatus for sensing a target characteristic by measuring both impedance and resonant frequency of a tank circuit
US6703831B1 (en) * 1999-11-12 2004-03-09 Quantech, Inc. Dual eddy current probe for detecting geometrical differences especially as related to threaded apertures and studs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5103172A (en) * 1989-04-08 1992-04-07 Festo Kg Piston and cylinder device with fixed conductive guide on periphery of cylinder
US5420507A (en) * 1992-09-28 1995-05-30 Edward L. Laskowski Method and apparatus for sensing a target characteristic by measuring both impedance and resonant frequency of a tank circuit
JPH06242199A (en) * 1993-02-15 1994-09-02 Yoshio Kido Magnetization measuring device having continuously measuring function
US6703831B1 (en) * 1999-11-12 2004-03-09 Quantech, Inc. Dual eddy current probe for detecting geometrical differences especially as related to threaded apertures and studs

Also Published As

Publication number Publication date
WO2008061180A9 (en) 2008-10-30
WO2008061180A2 (en) 2008-05-22

Similar Documents

Publication Publication Date Title
WO2008063911A3 (en) Cash tracking system
EP1761743B8 (en) Arrangement comprising a magnetic field sensor
WO2008014084A3 (en) Pipeline
GB2434504B (en) Pattern recognition systems
WO2008061180A3 (en) Electromagnetic sensor systems
EP1995202A4 (en) Electromagnetic brake control device
AU2006905310A0 (en) A Linear Accelerator
AU2006905493A0 (en) A control circuit
AU2006903540A0 (en) A stop assembly
AU2006901147A0 (en) A valve
AU2006901300A0 (en) A valve assembly
AU2006901785A0 (en) A valve assembly
AU2006907265A0 (en) A valve assembly
AU2006902360A0 (en) A sensor
AU2006904995A0 (en) A sensor
AU2006906614A0 (en) A Control System With An Alarm
AU2005900595A0 (en) A radar system
AU2006904543A0 (en) A choice engine
AU2006903416A0 (en) A piston device
AU2006901806A0 (en) Dual frequency RFID systems
AU2005904871A0 (en) A control system
AU2006903183A0 (en) A retainer
AU2006900659A0 (en) A magnetic locking device
GB2441558B (en) A position feedback system
AU2006905498A0 (en) A wastewater system

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07871480

Country of ref document: EP

Kind code of ref document: A2

122 Ep: pct application non-entry in european phase

Ref document number: 07871480

Country of ref document: EP

Kind code of ref document: A2