WO1999045601A3 - Magnetostrictive stress sensor - Google Patents

Magnetostrictive stress sensor Download PDF

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Publication number
WO1999045601A3
WO1999045601A3 PCT/IB1999/000339 IB9900339W WO9945601A3 WO 1999045601 A3 WO1999045601 A3 WO 1999045601A3 IB 9900339 W IB9900339 W IB 9900339W WO 9945601 A3 WO9945601 A3 WO 9945601A3
Authority
WO
WIPO (PCT)
Prior art keywords
ferrite
stress sensor
grain size
magnetostrictive stress
domain
Prior art date
Application number
PCT/IB1999/000339
Other languages
French (fr)
Other versions
WO1999045601A2 (en
Inventor
Der Zaag Pieter J Van
Gerardus H J Somers
Original Assignee
Koninkl Philips Electronics Nv
Philips Svenska Ab
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 Koninkl Philips Electronics Nv, Philips Svenska Ab filed Critical Koninkl Philips Electronics Nv
Priority to EP99903854A priority Critical patent/EP0980591A2/en
Priority to JP54444699A priority patent/JP2001523348A/en
Publication of WO1999045601A2 publication Critical patent/WO1999045601A2/en
Publication of WO1999045601A3 publication Critical patent/WO1999045601A3/en

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N35/00—Magnetostrictive devices
    • H10N35/101—Magnetostrictive devices with mechanical input and electrical output, e.g. generators, sensors
    • 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
    • G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
    • G01B7/24—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in magnetic properties
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/12—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress
    • G01L1/125—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress by using magnetostrictive means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

A magnetostrictive stress sensor is provided with a soft-ferromagnetic body having a grain structure, at least a part of the grains having a grain size in the transition region between the one-domain and the two-domain state. At this grain size, which is of the order of 1 to 9 νm for a ferrite body, a relatively large magnetostrictive effect occurs. In a practical embodiment, the ferromagnetic body is formed by a ferrite core, in particular a ferrite ring, around at least a part of which an electric coil is wound, which is incorporated in a measuring circuit for measuring changes in the self-induction of the coil under the influence of mechanical pressure exerted on the ferrite core.
PCT/IB1999/000339 1998-03-05 1999-03-01 Magnetostrictive stress sensor WO1999045601A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP99903854A EP0980591A2 (en) 1998-03-05 1999-03-01 Magnetostrictive stress sensor
JP54444699A JP2001523348A (en) 1998-03-05 1999-03-01 Magnetostrictive stress sensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP98200686 1998-03-05
EP98200686.8 1998-03-05

Publications (2)

Publication Number Publication Date
WO1999045601A2 WO1999045601A2 (en) 1999-09-10
WO1999045601A3 true WO1999045601A3 (en) 1999-11-04

Family

ID=8233439

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1999/000339 WO1999045601A2 (en) 1998-03-05 1999-03-01 Magnetostrictive stress sensor

Country Status (5)

Country Link
US (1) US6494108B1 (en)
EP (1) EP0980591A2 (en)
JP (1) JP2001523348A (en)
CN (1) CN1256796A (en)
WO (1) WO1999045601A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6912911B2 (en) * 2002-04-30 2005-07-05 Sung J. Oh Inductively coupled stress/strain sensor
EP1909088A4 (en) * 2005-07-01 2015-12-23 Yamaha Motor Co Ltd Magneto-striction type load sensor and mobile body having the same
CN100592006C (en) 2005-08-25 2010-02-24 Ntn株式会社 Turbine unit for air cycle refrigeration cooling
SE529789C8 (en) * 2006-03-10 2007-12-27 Abb Ab Measuring device comprising a layer of a magnetoelastic alloy and method for manufacturing the measuring device
CN102410896A (en) * 2010-12-08 2012-04-11 昆山市瑞捷精密模具有限公司 Tensile stress measurer
DE102011083858A1 (en) * 2011-09-30 2013-04-04 Siemens Aktiengesellschaft Method and arrangement for monitoring gears in operation
CN106353702B (en) * 2016-09-14 2018-11-13 广东顺德中山大学卡内基梅隆大学国际联合研究院 A kind of MEMS magnetic field sensors and preparation method based on the modal resonance device that stretches in face
US10746611B2 (en) * 2017-12-07 2020-08-18 Texas Instruments Incorporated Magnetostrictive strain gauge sensor
CN114383697A (en) * 2021-12-28 2022-04-22 太原智林信息技术股份有限公司 Electronic balance based on magnetostrictive sensor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861203A (en) * 1972-01-03 1975-01-21 Asea Ab Magnetoelastic transducer
US5142227A (en) * 1990-06-04 1992-08-25 Allied-Signal Inc. Method and apparatus for measuring strain within a ferromagnetic material by sensing change in coercive field
WO1996034445A1 (en) * 1995-04-28 1996-10-31 Philips Electronics N.V. Apparatus for recharging a battery
US5652394A (en) * 1994-04-08 1997-07-29 Nippon Steel Corporation Stress sensor fabricated from a material having precipitated granular carbides

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4783711A (en) * 1985-07-12 1988-11-08 Hitachi, Ltd. Magnetoresistive sensor having magnetic shields of ferrite
SE8902330D0 (en) * 1989-06-28 1989-06-28 Carl H Tyren FREQUENCY CARRIED MECHANICAL STRESS INFORMATION

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861203A (en) * 1972-01-03 1975-01-21 Asea Ab Magnetoelastic transducer
US5142227A (en) * 1990-06-04 1992-08-25 Allied-Signal Inc. Method and apparatus for measuring strain within a ferromagnetic material by sensing change in coercive field
US5652394A (en) * 1994-04-08 1997-07-29 Nippon Steel Corporation Stress sensor fabricated from a material having precipitated granular carbides
WO1996034445A1 (en) * 1995-04-28 1996-10-31 Philips Electronics N.V. Apparatus for recharging a battery

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
VAN DER ZAAG P.J. ET AL.,: "The initial permeability of polycrystalline MnZn", J. APPL. PHYS., vol. 74, no. 6, September 1993 (1993-09-01), pages 4085 - 4095 *

Also Published As

Publication number Publication date
JP2001523348A (en) 2001-11-20
US6494108B1 (en) 2002-12-17
CN1256796A (en) 2000-06-14
WO1999045601A2 (en) 1999-09-10
EP0980591A2 (en) 2000-02-23

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