WO2004020936A3 - Multiturn absolute rotary position sensor with coarse detector for axial movement and inductive fine detector for rotary movement - Google Patents

Multiturn absolute rotary position sensor with coarse detector for axial movement and inductive fine detector for rotary movement Download PDF

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Publication number
WO2004020936A3
WO2004020936A3 PCT/GB2003/003718 GB0303718W WO2004020936A3 WO 2004020936 A3 WO2004020936 A3 WO 2004020936A3 GB 0303718 W GB0303718 W GB 0303718W WO 2004020936 A3 WO2004020936 A3 WO 2004020936A3
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
movement
rotary
detector
range
Prior art date
Application number
PCT/GB2003/003718
Other languages
French (fr)
Other versions
WO2004020936A2 (en
Inventor
Mark Anthony Howard
Colin Sills
Darran Kreit
Bruce Macaulay
Original Assignee
Sensopad Technologies Ltd
Mark Anthony Howard
Colin Sills
Darran Kreit
Bruce Macaulay
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 GB0219876A external-priority patent/GB0219876D0/en
Priority claimed from GB0315738A external-priority patent/GB0315738D0/en
Application filed by Sensopad Technologies Ltd, Mark Anthony Howard, Colin Sills, Darran Kreit, Bruce Macaulay filed Critical Sensopad Technologies Ltd
Priority to AU2003259372A priority Critical patent/AU2003259372A1/en
Priority to EP03791030A priority patent/EP1549912A2/en
Priority to US10/724,336 priority patent/US7196604B2/en
Publication of WO2004020936A2 publication Critical patent/WO2004020936A2/en
Publication of WO2004020936A3 publication Critical patent/WO2004020936A3/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
    • G01D5/204—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 mutual induction between two or more coils
    • G01D5/2073—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 mutual induction between two or more coils by movement of a single coil with respect to two or more coils

Abstract

There is described a rotary position sensor for sensing the rotational movement of a shaft about an axis in which a follower is coupled to the shaft and moves over an associated range of linear movement in concert with rotation of the shaft about the axis, wherein each position within the range of rotary movement of the shaft corresponds to a single position within the range of linear movement of the follower. A first detector outputs a signal which is representative of a plurality of rotary positions of the shaft about the axis, and a second detector detects the linear position of the follower within the range of movement of the follower. A position calculator determines the position of the shaft within the range of rotary movement of the shaft using the positions detected by the first and second detectors. The first detector comprises a planar transmit aerial and a planer receive aerial having an electromagnetic coupling which varies in dependence upon the relative rotary position of the shaft and the mounting.
PCT/GB2003/003718 2001-05-30 2003-08-27 Multiturn absolute rotary position sensor with coarse detector for axial movement and inductive fine detector for rotary movement WO2004020936A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2003259372A AU2003259372A1 (en) 2002-08-27 2003-08-27 Multiturn absolute rotary position sensor with coarse detector for axial movement and inductive fine detector for rotary movement
EP03791030A EP1549912A2 (en) 2002-08-27 2003-08-27 Multiturn absolute rotary position sensor with coarse detector for axial movement and inductive fine detector for rotary movement
US10/724,336 US7196604B2 (en) 2001-05-30 2003-11-29 Sensing apparatus and method

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0219876A GB0219876D0 (en) 2002-08-27 2002-08-27 Concept for automotive steering wheels
GB0219876.0 2002-08-27
GB0315738.5 2003-07-04
GB0315738A GB0315738D0 (en) 2003-07-04 2003-07-04 Position encoder

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/001707 Continuation-In-Part WO2002097374A1 (en) 2001-05-30 2002-04-12 Sensing apparatus and method

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/724,336 Continuation-In-Part US7196604B2 (en) 2001-05-30 2003-11-29 Sensing apparatus and method

Publications (2)

Publication Number Publication Date
WO2004020936A2 WO2004020936A2 (en) 2004-03-11
WO2004020936A3 true WO2004020936A3 (en) 2004-06-10

Family

ID=31979986

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/003718 WO2004020936A2 (en) 2001-05-30 2003-08-27 Multiturn absolute rotary position sensor with coarse detector for axial movement and inductive fine detector for rotary movement

Country Status (3)

Country Link
EP (1) EP1549912A2 (en)
AU (1) AU2003259372A1 (en)
WO (1) WO2004020936A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003038380A1 (en) * 2001-10-30 2003-05-08 Scientific Generics Limited A position sensor
GB0303627D0 (en) 2003-02-17 2003-03-19 Sensopad Technologies Ltd Sensing method and apparatus
GB2426591B (en) * 2005-05-27 2009-12-30 Tt Electronics Technology Ltd Sensing apparatus and method
WO2009118042A1 (en) * 2008-03-26 2009-10-01 Elmos Semiconductor Ag Inductive position sensor
GB0814289D0 (en) * 2008-08-05 2008-09-10 Howard Mark A Detector
EP4012350B1 (en) 2020-12-08 2023-03-15 Dr. Johannes Heidenhain GmbH Scanning element and inductive position measuring device with the same

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253079A (en) * 1979-04-11 1981-02-24 Amnon Brosh Displacement transducers employing printed coil structures
US4853666A (en) * 1987-05-29 1989-08-01 Mannesmann Kienzle Gmbh Push button for an inductive value input keyboard
US4989329A (en) * 1988-03-31 1991-02-05 Schlumberger Industries Limited Rotary displacement transducers
EP0460417A1 (en) * 1990-06-07 1991-12-11 Robert Bosch Gmbh Inductive angular transducer for determining shaft rotation
DE4129576A1 (en) * 1991-09-06 1993-03-11 Mueller Arnold Gmbh Co Kg Magnetic measurement system for shaft rotary angle - contains magnetically conducting rotor, two fixed, relatively offset field plate sensor elements producing sine and cosine signals and evaluation unit forming quotient
DE4230950C1 (en) * 1992-09-16 1993-09-23 Peter 83620 Feldkirchen-Westerham De Ludwig Electromagnetic pushbutton switch with variable restoring force - has coil with permanent-magnet core which doubles as sensor of movement or position of button and as actuator for additional movement dependent on switching function
WO1999061868A1 (en) * 1998-05-22 1999-12-02 Synaptics (Uk) Limited Position sensor
WO2001042865A1 (en) * 1999-12-10 2001-06-14 Gentech Investment Group Ag. Man-machine interface having relative position sensor
US20020053903A1 (en) * 2000-10-23 2002-05-09 Austriamicrosystems Ag Angle measuring device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253079A (en) * 1979-04-11 1981-02-24 Amnon Brosh Displacement transducers employing printed coil structures
US4853666A (en) * 1987-05-29 1989-08-01 Mannesmann Kienzle Gmbh Push button for an inductive value input keyboard
US4989329A (en) * 1988-03-31 1991-02-05 Schlumberger Industries Limited Rotary displacement transducers
EP0460417A1 (en) * 1990-06-07 1991-12-11 Robert Bosch Gmbh Inductive angular transducer for determining shaft rotation
DE4129576A1 (en) * 1991-09-06 1993-03-11 Mueller Arnold Gmbh Co Kg Magnetic measurement system for shaft rotary angle - contains magnetically conducting rotor, two fixed, relatively offset field plate sensor elements producing sine and cosine signals and evaluation unit forming quotient
DE4230950C1 (en) * 1992-09-16 1993-09-23 Peter 83620 Feldkirchen-Westerham De Ludwig Electromagnetic pushbutton switch with variable restoring force - has coil with permanent-magnet core which doubles as sensor of movement or position of button and as actuator for additional movement dependent on switching function
WO1999061868A1 (en) * 1998-05-22 1999-12-02 Synaptics (Uk) Limited Position sensor
WO2001042865A1 (en) * 1999-12-10 2001-06-14 Gentech Investment Group Ag. Man-machine interface having relative position sensor
US20020053903A1 (en) * 2000-10-23 2002-05-09 Austriamicrosystems Ag Angle measuring device

Also Published As

Publication number Publication date
AU2003259372A8 (en) 2004-03-19
AU2003259372A1 (en) 2004-03-19
WO2004020936A2 (en) 2004-03-11
EP1549912A2 (en) 2005-07-06

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