WO1997006404A3 - Gear tooth sensor with improved resolution and stability - Google Patents

Gear tooth sensor with improved resolution and stability Download PDF

Info

Publication number
WO1997006404A3
WO1997006404A3 PCT/US1996/012102 US9612102W WO9706404A3 WO 1997006404 A3 WO1997006404 A3 WO 1997006404A3 US 9612102 W US9612102 W US 9612102W WO 9706404 A3 WO9706404 A3 WO 9706404A3
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
magnet
gear tooth
magnetic axis
hall
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.)
Ceased
Application number
PCT/US1996/012102
Other languages
French (fr)
Other versions
WO1997006404A2 (en
Inventor
Ronald J. Wolf
Larry Hedeen
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.)
Durakool Inc
Original Assignee
Durakool 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 Durakool Inc filed Critical Durakool Inc
Priority to DE0842392T priority Critical patent/DE842392T1/en
Priority to DE69631143T priority patent/DE69631143T2/en
Priority to AU65228/96A priority patent/AU6522896A/en
Priority to EP96924680A priority patent/EP0842392B1/en
Publication of WO1997006404A2 publication Critical patent/WO1997006404A2/en
Publication of WO1997006404A3 publication Critical patent/WO1997006404A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • G01D5/142—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 using Hall-effect devices
    • G01D5/147—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 using Hall-effect devices influenced by the movement of a third element, the position of Hall device and the source of magnetic field being fixed in respect to each other
    • 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
    • G01P3/488—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 variable reluctance detectors
    • 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
    • G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
    • G01D2205/40—Position sensors comprising arrangements for concentrating or redirecting magnetic flux

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

A gear tooth sensor having increased sensitivity and temperature tolerance enables relatively small ferrous targets to be detected. All of the embodiments include a magnet (22) and a single input Hall effect IC (26) and may include one or more flux concentrators (28). In one embodiment the sensor is configured such that the magnet is disposed adjacent the periphery of a target wheel (29) such that the magnetic axis is generally parallel to the direction of travel of the ferrous target. In an alternate embodiment, the magnet, Hall IC and flux concentrator are all aligned and disposed such that the magnetic axis is generally parallel to the direction of travel of the ferrous target. Additional flux concentrators may also be provided for adjusting the operating points of the Hall IC's. In yet other embodiments, the sensor is configured such that the sensing plane of the IC is generally perpendicular to the magnetic axis.
PCT/US1996/012102 1995-08-02 1996-07-22 Gear tooth sensor with improved resolution and stability Ceased WO1997006404A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE0842392T DE842392T1 (en) 1995-08-02 1996-07-22 GEAR MOTOR SENSOR WITH IMPROVED STABILITY AND RESOLUTION
DE69631143T DE69631143T2 (en) 1995-08-02 1996-07-22 GEAR MOTOR SENSOR WITH IMPROVED STABILITY AND RESOLUTION
AU65228/96A AU6522896A (en) 1995-08-02 1996-07-22 Gear tooth sensor with improved resolution and stability
EP96924680A EP0842392B1 (en) 1995-08-02 1996-07-22 Gear tooth sensor with improved resolution and stability

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US51041995A 1995-08-02 1995-08-02
US08/510,419 1995-08-02

Publications (2)

Publication Number Publication Date
WO1997006404A2 WO1997006404A2 (en) 1997-02-20
WO1997006404A3 true WO1997006404A3 (en) 1997-04-10

Family

ID=24030660

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/012102 Ceased WO1997006404A2 (en) 1995-08-02 1996-07-22 Gear tooth sensor with improved resolution and stability

Country Status (5)

Country Link
US (1) US6064198A (en)
EP (1) EP0842392B1 (en)
AU (1) AU6522896A (en)
DE (2) DE842392T1 (en)
WO (1) WO1997006404A2 (en)

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US6545465B1 (en) * 2000-06-14 2003-04-08 Syron Engineering & Manufacturing Corporation Gripper with coiled sensor wire
JP3619156B2 (en) * 2001-01-30 2005-02-09 三菱電機株式会社 Magnetic detector
US6639399B2 (en) * 2001-02-06 2003-10-28 Delphi Technologies, Inc. Target wheel sensor assembly for determining position and direction of motion of a rotating target wheel
US6577123B2 (en) * 2001-06-04 2003-06-10 Delphi Technologies, Inc. Linear position sensor assembly
KR100913631B1 (en) * 2001-10-19 2009-08-24 가부시키가이샤 야스카와덴키 Multi-rotary encoder
DE10247590A1 (en) * 2002-10-11 2004-04-22 Siemens Ag Magnetic position sensor
US20050007103A1 (en) * 2003-07-08 2005-01-13 Thaddeus Schroeder Sensor assembly for sensing direction of rotation and/or position of an object
US7285949B2 (en) * 2003-07-25 2007-10-23 Timken Us Corporation Transmission input shaft speed measuring assembly
DE102004022622B4 (en) * 2004-05-07 2013-09-12 Robert Bosch Gmbh Magnetic sensor arrangement and a method for its production
SE527102C2 (en) * 2004-05-19 2005-12-20 Volvo Lastvagnar Ab Magnetic detector arrangement and method for obtaining a symmetrical magnetic field
US7548155B2 (en) * 2005-02-18 2009-06-16 Saf-Holland, Inc. Fifth wheel sensor assembly
US7242183B2 (en) 2005-02-28 2007-07-10 Delphi Technologies, Inc. Low cost linear position sensor employing one permanent magnat and one galvanomagnetic sensing element
DE102005057623B3 (en) * 2005-12-02 2007-05-10 Keiper Gmbh & Co.Kg Motor vehicle seat, has fitting comprising locking unit and counter unit that work together with locking unit, and control device determining relative position of locking and counter units to check suitable orientation for locking fitting
US7521922B2 (en) * 2006-11-07 2009-04-21 Key Safety Systems, Inc. Linear position sensor
DE102007023815A1 (en) 2007-05-21 2008-11-27 Sensitec Gmbh Arrangement for scanning a linear or circular scale of ferromagnetic material
JP5258884B2 (en) * 2008-06-20 2013-08-07 株式会社ハーモニック・ドライブ・システムズ Magnetic encoder and actuator
US7977935B2 (en) * 2009-06-04 2011-07-12 Key Safety Systems, Inc. Temperature tolerant magnetic linear displacement sensor
US20120249128A1 (en) * 2011-03-28 2012-10-04 GM Global Technology Operations LLC Magnetic sensor system
US9817078B2 (en) 2012-05-10 2017-11-14 Allegro Microsystems Llc Methods and apparatus for magnetic sensor having integrated coil
DE102013007901B4 (en) * 2013-05-08 2019-04-04 Tdk-Micronas Gmbh measuring system
US10145908B2 (en) 2013-07-19 2018-12-04 Allegro Microsystems, Llc Method and apparatus for magnetic sensor producing a changing magnetic field
JP6210596B2 (en) * 2014-01-08 2017-10-11 アルプス電気株式会社 Rotation detector
JP5860069B2 (en) * 2014-02-05 2016-02-16 ファナック株式会社 Manufacturing method of magnetic detector including rotating body having signal generation unit
US9723692B2 (en) 2015-05-20 2017-08-01 Saf-Holland, Inc Fifth wheel coupling detection system with inspection and indication lighting arrangement
US9765711B2 (en) * 2015-05-27 2017-09-19 Deere & Company System and method for determining information related to a rotation of a shaft
US10012518B2 (en) 2016-06-08 2018-07-03 Allegro Microsystems, Llc Magnetic field sensor for sensing a proximity of an object
US10215590B2 (en) 2016-06-08 2019-02-26 Allegro Microsystems, Llc Magnetic field sensor for sensing a proximity and/or a location of an object
US10324141B2 (en) 2017-05-26 2019-06-18 Allegro Microsystems, Llc Packages for coil actuated position sensors
US10310028B2 (en) 2017-05-26 2019-06-04 Allegro Microsystems, Llc Coil actuated pressure sensor
US10996289B2 (en) 2017-05-26 2021-05-04 Allegro Microsystems, Llc Coil actuated position sensor with reflected magnetic field
US10641842B2 (en) 2017-05-26 2020-05-05 Allegro Microsystems, Llc Targets for coil actuated position sensors
US11428755B2 (en) 2017-05-26 2022-08-30 Allegro Microsystems, Llc Coil actuated sensor with sensitivity detection
US10837943B2 (en) 2017-05-26 2020-11-17 Allegro Microsystems, Llc Magnetic field sensor with error calculation
US11061084B2 (en) 2019-03-07 2021-07-13 Allegro Microsystems, Llc Coil actuated pressure sensor and deflectable substrate
US10955306B2 (en) 2019-04-22 2021-03-23 Allegro Microsystems, Llc Coil actuated pressure sensor and deformable substrate
US11262422B2 (en) 2020-05-08 2022-03-01 Allegro Microsystems, Llc Stray-field-immune coil-activated position sensor
US11493361B2 (en) 2021-02-26 2022-11-08 Allegro Microsystems, Llc Stray field immune coil-activated sensor
US11578997B1 (en) 2021-08-24 2023-02-14 Allegro Microsystems, Llc Angle sensor using eddy currents
US12523717B2 (en) 2024-02-15 2026-01-13 Allegro Microsystems, Llc Closed loop magnetic field sensor with current control

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US4481469A (en) * 1981-06-05 1984-11-06 Robert Bosch Gmbh Rotary speed sensor with Hall generator responding to tangential component of magnetic field
US4626781A (en) * 1984-03-30 1986-12-02 Daimler-Benz Aktiengesellschaft Device for detecting the speed of rotation and/or an angle of rotation of a shaft
US4700133A (en) * 1986-02-28 1987-10-13 Ssi Technologies, Inc. Variable reluctance magnetic sensor with pole piece and shell projections matched to gear teeth
US4745363A (en) * 1986-07-16 1988-05-17 North American Philips Corporation Non-oriented direct coupled gear tooth sensor using a Hall cell
US4859941A (en) * 1987-03-18 1989-08-22 Sprague Electric Company Proximity selectro with integral magnet, pole-piece plate and pair of magnetic transducers
US5444369A (en) * 1993-02-18 1995-08-22 Kearney-National, Inc. Magnetic rotational position sensor with improved output linearity
US5444370A (en) * 1993-03-18 1995-08-22 Honeywell Inc. Magnetic angular position sensor with two magnetically sensitive components arranged proximate two target tracks having complimentary magnetic and nonmagnetic segments
US5469052A (en) * 1991-02-08 1995-11-21 Alliedsignal Inc. Velocity sensor which senses differential velocity by sensing changes in magnetic flux
US5510708A (en) * 1994-10-20 1996-04-23 General Motors Corporation Variable reluctance rotation sensor with leakage magnetic flux sensing

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US5341097A (en) * 1992-09-29 1994-08-23 Honeywell Inc. Asymmetrical magnetic position detector
JPH06174735A (en) * 1992-12-03 1994-06-24 Asahi Chem Ind Co Ltd Rotation detector

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900814A (en) * 1973-05-31 1975-08-19 Denki Onkyo Company Ltd Revolution sensing apparatus
US4481469A (en) * 1981-06-05 1984-11-06 Robert Bosch Gmbh Rotary speed sensor with Hall generator responding to tangential component of magnetic field
US4626781A (en) * 1984-03-30 1986-12-02 Daimler-Benz Aktiengesellschaft Device for detecting the speed of rotation and/or an angle of rotation of a shaft
US4700133A (en) * 1986-02-28 1987-10-13 Ssi Technologies, Inc. Variable reluctance magnetic sensor with pole piece and shell projections matched to gear teeth
US4745363A (en) * 1986-07-16 1988-05-17 North American Philips Corporation Non-oriented direct coupled gear tooth sensor using a Hall cell
US4859941A (en) * 1987-03-18 1989-08-22 Sprague Electric Company Proximity selectro with integral magnet, pole-piece plate and pair of magnetic transducers
US5469052A (en) * 1991-02-08 1995-11-21 Alliedsignal Inc. Velocity sensor which senses differential velocity by sensing changes in magnetic flux
US5444369A (en) * 1993-02-18 1995-08-22 Kearney-National, Inc. Magnetic rotational position sensor with improved output linearity
US5444370A (en) * 1993-03-18 1995-08-22 Honeywell Inc. Magnetic angular position sensor with two magnetically sensitive components arranged proximate two target tracks having complimentary magnetic and nonmagnetic segments
US5510708A (en) * 1994-10-20 1996-04-23 General Motors Corporation Variable reluctance rotation sensor with leakage magnetic flux sensing

Non-Patent Citations (1)

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Title
See also references of EP0842392A4 *

Also Published As

Publication number Publication date
EP0842392B1 (en) 2003-12-17
EP0842392A4 (en) 2001-01-10
US6064198A (en) 2000-05-16
WO1997006404A2 (en) 1997-02-20
DE842392T1 (en) 1999-01-07
EP0842392A2 (en) 1998-05-20
AU6522896A (en) 1997-03-05
DE69631143T2 (en) 2004-08-26
DE69631143D1 (en) 2004-01-29

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