WO1997016736A2 - Capteur de position lineaire a deux axes - Google Patents

Capteur de position lineaire a deux axes Download PDF

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Publication number
WO1997016736A2
WO1997016736A2 PCT/US1996/017255 US9617255W WO9716736A2 WO 1997016736 A2 WO1997016736 A2 WO 1997016736A2 US 9617255 W US9617255 W US 9617255W WO 9716736 A2 WO9716736 A2 WO 9716736A2
Authority
WO
WIPO (PCT)
Prior art keywords
linear
actuator
sensor
pole piece
coupled
Prior art date
Application number
PCT/US1996/017255
Other languages
English (en)
Other versions
WO1997016736A3 (fr
Inventor
Thomas R. Olson
Bret W. Shriver
John Zdanys, Jr.
Ronald C. Nonnenmacher
Craig A. Jarrard
James E. White
Jeffrey L. Mccurley
Original Assignee
Cts Corporation
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 Cts Corporation filed Critical Cts Corporation
Priority to AU74801/96A priority Critical patent/AU7480196A/en
Publication of WO1997016736A2 publication Critical patent/WO1997016736A2/fr
Publication of WO1997016736A3 publication Critical patent/WO1997016736A3/fr
Priority to US08/999,585 priority patent/US6175233B1/en

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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/68—Inputs being a function of gearing status
    • F16H59/70—Inputs being a function of gearing status dependent on the ratio established
    • 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
    • G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
    • 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
    • G01D5/145—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 relative movement between the Hall device and magnetic fields
    • 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
    • G01D2205/70—Position sensors comprising a moving target with particular shapes, e.g. of soft magnetic targets
    • G01D2205/77—Specific profiles
    • G01D2205/775—Tapered profiles
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
    • G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
    • G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
    • G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
    • G05G2009/0474—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks characterised by means converting mechanical movement into electric signals
    • G05G2009/04755—Magnetic sensor, e.g. hall generator, pick-up coil

Definitions

  • TITLE A TWO AXES LINEAR POSITION SENSOR
  • This invention relates to a Hall effect position sensor for determining linear position changes along two different axes.
  • the sensor can be used for a variety of applications including a position sensor for a manual shifter.
  • U.S. patent no. 5,369,361 is a position detecting device using a hall sensor.
  • the device comprises a Hall IC, a magnet, and a back yoke.
  • the Hall IC is moved in a space above the magnet, the position can be detected based upon the change in flux density between the poles of the magnet.
  • U.S. patent no. 5,365,791 is a signal generator for generating an electrical signal that varies according to movement of an actuating member includes a plunger slidable mounted within a housing that carries a pair of permanent magnets for generating a magnetic field to be applied to a Hall effect generator.
  • U.S. patent no. 4,958,615 is a signal generator that has a Hall effect sensor and a magnet disposed inside a distributor housing.
  • U.S. patent no. 4,928,089 is an encoder for a wheel that uses a linear
  • U.S. patent no. 4,703,261 is a measuring system for a gear measuring feeler that has a Hall effect sensor elements arranged in opposing relationship to each other in the magnetic field.
  • U.S. patent no. 3,473, 109 is a position sensor utilizing a Hall generator.
  • a pair of permanent magnets are co-planarly positioned with a pair of opposite poles abutting each other.
  • An additional feature of the invention is to provide two Hall effect sensors.
  • the first sensor detects any positional changes along the length of a first axis (y direction) of linear motion and a second sensor detects any positional changes along the length of a second axis (x direction) of linear motion.
  • FIG. 1 is a cross sectional view of an embodiment of the invention taken along line a-a of FIG. 2.
  • FIG. 2 is a sectional view of the embodiment of FIG. 1 with the housing removed.
  • FIG. 3 is an exploded perspective view of a preferred embodiment.
  • FIG. 4 is a cross sectional view of the preferred embodiment of FIG. 3.
  • the present invention provides a Hall effect position sensor for determining linear position changes along two different axes.
  • a dual axes position sensor 10 having an outer housing 12, an actuator 40, a linear Hall effect sensor assembly 20 for detecting position changes along a first (y) axis, and a linear Hall effect sensor assembly 30 for detecting position changes along a second (x) axis.
  • the housing 12 is preferably made out of a non-magnetic material such as plastic.
  • the actuator 40 is rod shaped and coupled to a movable device, body, or shaft (not shown) that is to have its position sensed.
  • the linear Hall effect sensor assembly 20 is unattachably positioned to set on lip 52 of housing 12, and includes a magnetically conducting pole piece 26, a magnet assembly 24 that comprises an upper magnet 21 and a Iower magnet 23 that are separated by an air gap 25. Air gap 25 changes width along the length of pole piece 26 as the thickness of magnet assembly 24 varies. Magnet assembly 24 may be insert molded to pole piece 26 or molded separately and glued in place. Pole piece 26 is attached to a slide 28 which slidably sits on top of slide 38. Slide 28 has a longitudinal slot 29 capable of receiving actuator 40 (scotch-yoke configuration). Magnets assembly 24 and pole piece 26 are positioned around a Hall sensor device support 14 in a "U" shaped configuration or form. Hall sensor device support 14 is fixedly attached to housing 12 via attachment area 54. A positionally fixed
  • Hall effect sensor element 22 attached to Hall device support 14 on surface 15.
  • Linear Hall effect sensor assembly 30, positioned approximately 90 degrees from linear Hall effect sensor assembly 20, likewise includes a magnetically conductive pole piece 36 and a magnet assembly 34 that comprises an upper magnet 31 and a Iower magnet 33 that are separated by an air gap 35.
  • Pole piece 36 is attached to a slide 38 which slidably sits on lip 52 of housing 12.
  • Slide 38 has a longitudinal slot 39 capable of receiving actuator 40 (scotch- yoke configuration).
  • Magnets assembly 34 and pole piece 26 are positioned around the Hall sensor device support 14 in a "U" shaped configuration or form.
  • the dual-axes position sensor 10 will sense linear positioning along two different axes (y and x) of a body (not shown) that is coupled to actuator 40.
  • linear Hall effect sensor assembly 20 will determine the exact position of the body along the y-axis.
  • the position detection is accomplished by actuator 40 pushing slide 28 and correspondingly both magnet assembly 24 and pole piece 26 in the same direction.
  • magnet assembly 24 As magnet assembly 24 is moved, the magnet thickness and magnetic flux density (B x ) surrounding Hall effect sensor element 22 varies and is detected.
  • Hall effect sensor element 22 produces a voltage signal based on the magnetic flux density, and the voltage signal is then amplified to provide a measurable signal that can be monitored by a control module (not shown).
  • the actuator is only moved in a direction along the y-axis, there is no change in flux density detected by Hall effect sensor element 32 because the actuator moves along slot 39 and does not push slide 38.
  • linear Hall effect sensor assembly 30 will operate in a manner similar to linear Hall effect sensor assembly 20 in detecting position changes along the x-axis.
  • linear Hall effect sensor assembly 20 will determine the y component of the vector
  • linear Hall effect assembly 30 will determine the x component of the vector.
  • the dual-axes position sensor 10 includes lip 56 for slide (slide rack) 28 to traverse along.
  • slide 28 slidably sits on a lip 56 of housing 12 instead of on top of slide 38.
  • a connector 48 is shown for providing electrical connection from dual-axes position sensor 10 to a vehicle control module (not shown).
  • Hall sensor device support 14 includes a substrate with electrical components mounted thereon.
  • Housing 12 also includes a cover 16 and a retainer piece 44 to hold actuator 40 in place using shoulder 60.
  • Retainer piece 44 can be made from any suitable material
  • FIG. 4 there is illustrated a cross sectional view of an exemplary application of the preferred embodiment depicted in FIG. 3.
  • the Hall sensor device support 14 is shown wire bonded 50 to connector 48.
  • This view further includes a transmission shift rod 64 that is Iocated in a shift tower mechanism (not shown), and which is coupled to actuator 40 using a ball 66 and socket 62 configuration. Dual-axis position sensor 10 can monitor both the axial and rotational travel of the shift rod using this ball 62 and socket 66 coupling. If transmission shift rod is pushed in the y-axis direction, actuator 40 will also move in the y-axis direction and the movement will be detected by linear Hall effect sensor assembly 20. Furthermore, if transmission shift rod 64 is rotated about its axis 68, actuator 40 will move along the x-axis, and linear Hall effect sensor assembly 30 will detect the movement.
  • the illustrated embodiments discuss the arrangement of the two sensors relative to each other, one skilled in the art will realize that the preferred embodiment would work with most any arrangement.
  • the two sensors could be positionally switched or placed at different angles to one another.
  • the preferred embodiment discusses the use of two magnets and one pole piece per sensor with the Hall effect sensor positioned therebetween, a skilled artisan could probably use most any known hall effect based sensor design. It is contemplated to design the sensor assembly so that the magnets are stationary and the actuator moves the Hall sensor devices 20 and 30 instead. Additionally, there are many other ways to vary the intensity of the magnetic flux field other than using magnets having different thicknesses.
  • the magnets could be of uniform thickness but positionally slanted to create a variable air gap, or they can be magnetized to varying magnetic flux strengths along their length.
  • the poles in the magnets can also be oriented in a number of different ways so that the Hall sensor device will be able to detect movement.

Landscapes

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

Abstract

La présente invention concerne un capteur (10) de position linéaire à deux axes, qui comprend un boîtier extérieur (12), un actionneur (40), un détecteur linéaire à effet Hall (20) pour détecter les changements de position le long d'un premier axe (y) et un détecteur linéaire à effet Hall (30), pour détecter les changements de position le long d'un deuxième axe (x). Le boîtier (12) est de préférence fait d'une matière non magnétique, par exemple de la matière plastique. L'actionneur (40) est en forme de tige et accouplé à un dispositif mobile ou à un arbre (non représenté) dont on veut détecter la position. Le détecteur linéaire à effet Hall (20) est positionné, sans fixation, pour se placer sur la lèvre (52) du boîtier (12) et il comporte une pièce polaire (26) conductrice magnétiquement, un montage d'aimants (24) comprenant un aimant supérieur (21) et un aimant inférieur (23) qui sont séparés par un entrefer (25). Le montage d'aimants (24) et la pièce polaire (26) sont placés autour d'un support (14) de capteur à effet Hall, dans une configuration ou forme en U. Ce support (14) est monté de manière fixe sur le boîtier (12) par la zone de fixation (54). Le capteur linéaire à effet Hall (20) comprend aussi un élément capteur fixe à effet Hall (22), fixé au support (14) de capteur à effet Hall, sur la surface (15). Le capteur linéaire à effet Hall (30) est positionné approximativement à 90°, dans un sens et dans l'autre, du capteur linéaire à effet Hall (20).
PCT/US1996/017255 1995-10-20 1996-10-18 Capteur de position lineaire a deux axes WO1997016736A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU74801/96A AU7480196A (en) 1995-10-20 1996-10-18 A two axes linear position sensor
US08/999,585 US6175233B1 (en) 1996-10-18 1998-02-02 Two axis position sensor using sloped magnets to generate a variable magnetic field and hall effect sensors to detect the variable magnetic field

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US577095P 1995-10-20 1995-10-20
US60/005,770 1995-10-20

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US08/999,585 Continuation US6175233B1 (en) 1996-10-18 1998-02-02 Two axis position sensor using sloped magnets to generate a variable magnetic field and hall effect sensors to detect the variable magnetic field

Publications (2)

Publication Number Publication Date
WO1997016736A2 true WO1997016736A2 (fr) 1997-05-09
WO1997016736A3 WO1997016736A3 (fr) 1997-07-10

Family

ID=21717663

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US1996/017198 WO1997023763A1 (fr) 1995-10-20 1996-10-18 Detecteur de position bimode angulaire et lineaire
PCT/US1996/017255 WO1997016736A2 (fr) 1995-10-20 1996-10-18 Capteur de position lineaire a deux axes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US1996/017198 WO1997023763A1 (fr) 1995-10-20 1996-10-18 Detecteur de position bimode angulaire et lineaire

Country Status (2)

Country Link
AU (2) AU7477696A (fr)
WO (2) WO1997023763A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2786266A1 (fr) * 1998-11-20 2000-05-26 Moving Magnet Tech Capteur de position a sonde de hall
EP1099929A1 (fr) * 1998-07-24 2001-05-16 Next Corporation Detecteur de deplacement
WO2003029758A1 (fr) * 2001-09-27 2003-04-10 Marquardt Gmbh Dispositif de mesure de courses et/ou de positions
US7034523B2 (en) 2001-09-27 2006-04-25 Marquardt Gmbh Device for measuring paths and/or positions
US7315036B2 (en) 2003-10-23 2008-01-01 The Flewelling Ford Family Trust Multifunction multi-spectrum signalling device
WO2010057758A1 (fr) * 2008-11-20 2010-05-27 Schaeffler Technologies Gmbh & Co. Kg Dispositif pour détecter des états de changement de vitesses d'un organe mobile de changement de vitesses et d'ajustement
WO2011055064A2 (fr) 2009-11-06 2011-05-12 Moving Magnet Technologies Capteur de position magnetique bidirectionnel a rotation de champ
US10041780B2 (en) 2010-09-29 2018-08-07 Moving Magnet Technologies (Mmt) Position sensor
GB2579121A (en) * 2018-09-18 2020-06-10 Bosch Gmbh Robert Position detection system and method of detecting a movement of a machine
EP3857164A4 (fr) * 2018-09-28 2021-11-24 Littelfuse, Inc. Capteur de positionnement linéaire

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6736024B1 (en) * 2000-01-25 2004-05-18 Ford Global Technologies, Llc Method and apparatus for determining the position of a shift rail
CN104793155B (zh) * 2014-01-21 2017-12-08 上海矽睿科技有限公司 一种磁传感装置及该装置的制备工艺

Citations (2)

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Publication number Priority date Publication date Assignee Title
US3421227A (en) * 1966-05-23 1969-01-14 Gen Motors Corp Two axis level detector
US4639667A (en) * 1983-05-23 1987-01-27 Andresen Herman J Contactless controllers sensing displacement along two orthogonal directions by the overlap of a magnet and saturable cores

Family Cites Families (3)

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US3835373A (en) * 1973-02-12 1974-09-10 Pertec Corp Rotational position sensor utilizing a hall device and means to maintain the hall voltage constant
US4107604A (en) * 1976-12-01 1978-08-15 Compunetics, Incorporated Hall effect displacement transducer using a bar magnet parallel to the plane of the Hall device
US5161083A (en) * 1991-09-09 1992-11-03 Lucas Ledex Inc. Solenoid actuator with position feedback system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3421227A (en) * 1966-05-23 1969-01-14 Gen Motors Corp Two axis level detector
US4639667A (en) * 1983-05-23 1987-01-27 Andresen Herman J Contactless controllers sensing displacement along two orthogonal directions by the overlap of a magnet and saturable cores

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1099929A1 (fr) * 1998-07-24 2001-05-16 Next Corporation Detecteur de deplacement
EP1099929A4 (fr) * 1998-07-24 2001-09-26 Next Corp Detecteur de deplacement
FR2786266A1 (fr) * 1998-11-20 2000-05-26 Moving Magnet Tech Capteur de position a sonde de hall
WO2000031505A1 (fr) * 1998-11-20 2000-06-02 Moving Magnet Technologies (S.A.) Capteur de position a sonde de hall
US6573709B1 (en) 1998-11-20 2003-06-03 Moving Magnet Technologies (S. A.) Position sensor with hall probe
WO2003029758A1 (fr) * 2001-09-27 2003-04-10 Marquardt Gmbh Dispositif de mesure de courses et/ou de positions
US6989670B2 (en) 2001-09-27 2006-01-24 Marquardt Gmbh Device for measuring paths and/or positions
US7034523B2 (en) 2001-09-27 2006-04-25 Marquardt Gmbh Device for measuring paths and/or positions
US7315036B2 (en) 2003-10-23 2008-01-01 The Flewelling Ford Family Trust Multifunction multi-spectrum signalling device
WO2010057758A1 (fr) * 2008-11-20 2010-05-27 Schaeffler Technologies Gmbh & Co. Kg Dispositif pour détecter des états de changement de vitesses d'un organe mobile de changement de vitesses et d'ajustement
WO2011055064A2 (fr) 2009-11-06 2011-05-12 Moving Magnet Technologies Capteur de position magnetique bidirectionnel a rotation de champ
US8970210B2 (en) 2009-11-06 2015-03-03 Moving Magnet Technologies (Mmt) Bidirectional magnetic position sensor having field rotation
US10041780B2 (en) 2010-09-29 2018-08-07 Moving Magnet Technologies (Mmt) Position sensor
GB2579121A (en) * 2018-09-18 2020-06-10 Bosch Gmbh Robert Position detection system and method of detecting a movement of a machine
US11499842B2 (en) 2018-09-18 2022-11-15 Robert Bosch Gmbh Position detection system and method for detecting a movement of a machine
GB2579121B (en) * 2018-09-18 2023-04-26 Bosch Gmbh Robert Position detection system and method of detecting a movement of a machine
EP3857164A4 (fr) * 2018-09-28 2021-11-24 Littelfuse, Inc. Capteur de positionnement linéaire

Also Published As

Publication number Publication date
WO1997016736A3 (fr) 1997-07-10
AU7480196A (en) 1997-05-22
AU7477696A (en) 1997-07-17
WO1997023763A1 (fr) 1997-07-03

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