ES2149728A1 - Device for detecting the position of a pneumatic piston - Google Patents

Device for detecting the position of a pneumatic piston

Info

Publication number
ES2149728A1
ES2149728A1 ES009900557A ES9900557A ES2149728A1 ES 2149728 A1 ES2149728 A1 ES 2149728A1 ES 009900557 A ES009900557 A ES 009900557A ES 9900557 A ES9900557 A ES 9900557A ES 2149728 A1 ES2149728 A1 ES 2149728A1
Authority
ES
Spain
Prior art keywords
pneumatic piston
detecting
piston
bridge
signal
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
ES009900557A
Other languages
Spanish (es)
Other versions
ES2149728B1 (en
Inventor
Villalabeitia Manuel Vazquez
Grande Antonio Hernando
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.)
Universidad Complutense de Madrid
Original Assignee
Universidad Complutense de Madrid
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 Universidad Complutense de Madrid filed Critical Universidad Complutense de Madrid
Priority to ES9900557A priority Critical patent/ES2149728B1/en
Priority to PCT/ES2000/000092 priority patent/WO2000055571A1/en
Priority to AU32925/00A priority patent/AU3292500A/en
Publication of ES2149728A1 publication Critical patent/ES2149728A1/en
Application granted granted Critical
Publication of ES2149728B1 publication Critical patent/ES2149728B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • F15B15/2807—Position switches, i.e. means for sensing of discrete positions only, e.g. limit switches
    • 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
    • G01D5/2006—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
    • G01D5/2033—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 controlling the saturation of a magnetic circuit by means of a movable element, e.g. a magnet

Abstract

The invention relates to a device for detecting the position of a mobile pneumatic piston to which a permanent magnet is attached. The device can unambiguously distinguish the presence of the piston in the final positions of its path. The device in based on the use of amorphous ferromagnetic threads which change their impedance when they are under the influence of a magnetic field. Two sensor elements are placed on the arms of a Wheatstone bridge. The position of the pneumatic piston is determined by comparing the relative phase between the input signal and the signal on the bridge.
ES9900557A 1999-03-18 1999-03-18 DEVICE FOR DETECTION OF THE POSITION OF A PNEUMATIC PISTON. Expired - Fee Related ES2149728B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES9900557A ES2149728B1 (en) 1999-03-18 1999-03-18 DEVICE FOR DETECTION OF THE POSITION OF A PNEUMATIC PISTON.
PCT/ES2000/000092 WO2000055571A1 (en) 1999-03-18 2000-03-17 Device for detecting the position of a pneumatic piston
AU32925/00A AU3292500A (en) 1999-03-18 2000-03-17 Device for detecting the position of a pneumatic piston

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9900557A ES2149728B1 (en) 1999-03-18 1999-03-18 DEVICE FOR DETECTION OF THE POSITION OF A PNEUMATIC PISTON.

Publications (2)

Publication Number Publication Date
ES2149728A1 true ES2149728A1 (en) 2000-11-01
ES2149728B1 ES2149728B1 (en) 2001-06-01

Family

ID=8307708

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9900557A Expired - Fee Related ES2149728B1 (en) 1999-03-18 1999-03-18 DEVICE FOR DETECTION OF THE POSITION OF A PNEUMATIC PISTON.

Country Status (3)

Country Link
AU (1) AU3292500A (en)
ES (1) ES2149728B1 (en)
WO (1) WO2000055571A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10227019A1 (en) * 2002-06-17 2004-01-08 Festo Ag & Co Linear displacement measuring device, in particular for determining the piston position in a fluidic cylinder arrangement
US8405386B2 (en) * 2009-02-17 2013-03-26 Goodrich Corporation Non-contact sensor system and method for position determination

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079360A (en) * 1974-07-26 1978-03-14 Sony Corporation Magnetic field sensing apparatus
FR2546577A1 (en) * 1983-05-28 1984-11-30 Festo Maschf Stoll G Piston-cylinder unit with piston position monitoring
JPS6480805A (en) * 1987-09-24 1989-03-27 Koganei Ltd Position detector for actuator
DE4430467A1 (en) * 1994-08-27 1995-10-19 Danfoss As Device for measuring position of moving object
ES2109879A1 (en) * 1995-06-20 1998-01-16 Univ Madrid Complutense Magnetic device for detecting and monitoring moving elements.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079360A (en) * 1974-07-26 1978-03-14 Sony Corporation Magnetic field sensing apparatus
FR2546577A1 (en) * 1983-05-28 1984-11-30 Festo Maschf Stoll G Piston-cylinder unit with piston position monitoring
JPS6480805A (en) * 1987-09-24 1989-03-27 Koganei Ltd Position detector for actuator
DE4430467A1 (en) * 1994-08-27 1995-10-19 Danfoss As Device for measuring position of moving object
ES2109879A1 (en) * 1995-06-20 1998-01-16 Univ Madrid Complutense Magnetic device for detecting and monitoring moving elements.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN Vol. 13, no 306 (P-897) 13.07.1989 (CD ROM PAJ G01B-L. 1988-1993. 49) & JP 1080805 A (KOGANEI SEISAKUSHO) 27.03.1989 *

Also Published As

Publication number Publication date
ES2149728B1 (en) 2001-06-01
AU3292500A (en) 2000-10-04
WO2000055571A1 (en) 2000-09-21

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