WO2005003687A3 - 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
WO2005003687A3
WO2005003687A3 PCT/GB2004/002928 GB2004002928W WO2005003687A3 WO 2005003687 A3 WO2005003687 A3 WO 2005003687A3 GB 2004002928 W GB2004002928 W GB 2004002928W WO 2005003687 A3 WO2005003687 A3 WO 2005003687A3
Authority
WO
WIPO (PCT)
Prior art keywords
detector
movement
position sensor
rotary
coarse
Prior art date
Application number
PCT/GB2004/002928
Other languages
French (fr)
Other versions
WO2005003687A2 (en
Inventor
Darran Kreit
Colin Sills
Mark Howard
Original Assignee
Scient Generics Ltd
Darran Kreit
Colin Sills
Mark Howard
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 Scient Generics Ltd, Darran Kreit, Colin Sills, Mark Howard filed Critical Scient Generics Ltd
Publication of WO2005003687A2 publication Critical patent/WO2005003687A2/en
Publication of WO2005003687A3 publication Critical patent/WO2005003687A3/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 position sensor in which a first Aerial and a second aerial are provided on plural planar substrates which are arranged in parallel with each other. A sensor element is operable to move relative to the plurality of planar substrates along a measurement direction transverse to the planar substrates. By appropriately distributing conductive tracks on at least two planar surfaces of the Plurality of planar substrates, the orthogonal position of a sensor element relative to the planar substrates may be detected.
PCT/GB2004/002928 2003-07-04 2004-07-05 Multiturn absolute rotary position sensor with coarse detector for axial movement and inductive fine detector for rotary movement WO2005003687A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0315738.5 2003-07-04
GB0315738A GB0315738D0 (en) 2003-07-04 2003-07-04 Position encoder

Publications (2)

Publication Number Publication Date
WO2005003687A2 WO2005003687A2 (en) 2005-01-13
WO2005003687A3 true WO2005003687A3 (en) 2005-07-14

Family

ID=27741618

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/002928 WO2005003687A2 (en) 2003-07-04 2004-07-05 Multiturn absolute rotary position sensor with coarse detector for axial movement and inductive fine detector for rotary movement

Country Status (2)

Country Link
GB (1) GB0315738D0 (en)
WO (1) WO2005003687A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102538838A (en) * 2012-02-17 2012-07-04 三一重工股份有限公司 Multiturn rotary encoder

Citations (6)

* 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
EP0402546A2 (en) * 1989-06-14 1990-12-19 Poly-Flex Circuits, Inc. Printed circuit board
US4989329A (en) * 1988-03-31 1991-02-05 Schlumberger Industries Limited Rotary displacement transducers
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
WO1995031696A1 (en) * 1994-05-14 1995-11-23 Scientific Generics Limited Position encoder

Patent Citations (6)

* 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
EP0402546A2 (en) * 1989-06-14 1990-12-19 Poly-Flex Circuits, Inc. Printed circuit board
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
WO1995031696A1 (en) * 1994-05-14 1995-11-23 Scientific Generics Limited Position encoder

Also Published As

Publication number Publication date
GB0315738D0 (en) 2003-08-13
WO2005003687A2 (en) 2005-01-13

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