WO2006016147A3 - Inductive sensor - Google Patents

Inductive sensor Download PDF

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Publication number
WO2006016147A3
WO2006016147A3 PCT/GB2005/003126 GB2005003126W WO2006016147A3 WO 2006016147 A3 WO2006016147 A3 WO 2006016147A3 GB 2005003126 W GB2005003126 W GB 2005003126W WO 2006016147 A3 WO2006016147 A3 WO 2006016147A3
Authority
WO
WIPO (PCT)
Prior art keywords
excitation
signal
coil
parameter
generated
Prior art date
Application number
PCT/GB2005/003126
Other languages
French (fr)
Other versions
WO2006016147A2 (en
Inventor
David Alun James
Bradley John Wilson
Chris James Brawn
Andrew Peter Matthews
Andrew Robert Hayes
Efstathios Louridas
Original Assignee
Sensopad Ltd
David Alun James
Bradley John Wilson
Chris James Brawn
Andrew Peter Matthews
Andrew Robert Hayes
Efstathios Louridas
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 Sensopad Ltd, David Alun James, Bradley John Wilson, Chris James Brawn, Andrew Peter Matthews, Andrew Robert Hayes, Efstathios Louridas filed Critical Sensopad Ltd
Priority to EP05769737A priority Critical patent/EP1789757A2/en
Priority to JP2007525347A priority patent/JP2008509419A/en
Publication of WO2006016147A2 publication Critical patent/WO2006016147A2/en
Publication of WO2006016147A3 publication Critical patent/WO2006016147A3/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
    • G01D5/2086—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 two or more coils with respect to two or more other coils
    • G01D5/2093—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 two or more coils with respect to two or more other coils using polyphase currents
    • 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
    • G01D5/2086—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 two or more coils with respect to two or more other coils

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Electronic Switches (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

A sensor for sensing an external parameter such as temperature or the presence of an object, for example a human finger, comprises: (i) an excitation coil (68,70); (ii) a signal generator (41, 61, 62, 63) operable to generate an excitation signal and arranged to apply the generated excitation signal to the excitation coil; (iii) a sensor coil (74) that can be eiectromagnetically coupled to the excitation coil via an intermediate device or target (74), normally in the form of a passive resonant circuit, such that, in response to the excitation signal being applied to the excitation coil by the signal generator, an electric signal is generated in the sensor coil; and (iv) a signal processor that processes the periodic electric signal generated in the sensor coil to determine a value representative of the parameter being sensed. The intermediate device is sensitive to the parameter to be sensed, for example by including PTC or NTC resistors, or capacitors that are affected by the proximity of an object, so that the periodic electric signal generated in the sensor coil is affected by the parameter.
PCT/GB2005/003126 2004-08-09 2005-08-09 Inductive sensor WO2006016147A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05769737A EP1789757A2 (en) 2004-08-09 2005-08-09 Inductive sensor
JP2007525347A JP2008509419A (en) 2004-08-09 2005-08-09 Inductive sensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0417686A GB0417686D0 (en) 2004-08-09 2004-08-09 Novel targets for inductive sensing applications
GB0417686.3 2004-08-09

Publications (2)

Publication Number Publication Date
WO2006016147A2 WO2006016147A2 (en) 2006-02-16
WO2006016147A3 true WO2006016147A3 (en) 2006-04-06

Family

ID=32982735

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2005/003126 WO2006016147A2 (en) 2004-08-09 2005-08-09 Inductive sensor

Country Status (5)

Country Link
EP (1) EP1789757A2 (en)
JP (1) JP2008509419A (en)
CN (2) CN101019006A (en)
GB (1) GB0417686D0 (en)
WO (1) WO2006016147A2 (en)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
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GB2461099B (en) * 2008-06-20 2012-02-08 Tt Electronics Technology Ltd Position sensing apparatus and method
DE102008042746A1 (en) * 2008-10-10 2010-04-22 Robert Bosch Gmbh Sensor system and method for operating a sensor system
SE533704C2 (en) * 2008-12-05 2010-12-07 Flatfrog Lab Ab Touch sensitive apparatus and method for operating the same
US8698641B2 (en) * 2010-11-02 2014-04-15 Kimberly-Clark Worldwide, Inc. Body fluid discriminating sensor
US9528815B2 (en) * 2013-02-08 2016-12-27 Hamilton Sundstrand Corporation Transformer based sensor arrangement
US9870690B2 (en) * 2013-10-08 2018-01-16 General Electric Company Methods and systems for a universal wireless platform for asset monitoring
JP6233641B2 (en) 2014-01-31 2017-11-22 パナソニックＩｐマネジメント株式会社 Position sensor
FR3021824B1 (en) 2014-05-30 2016-07-01 Thales Sa ANTENNA ADAPTER
CN104019833B (en) * 2014-06-13 2016-06-08 四川亚美动力技术有限公司 Engine oil needle position sensor detection circuit
DE102015101891A1 (en) * 2015-02-10 2016-08-11 Endress + Hauser Gmbh + Co. Kg Device for determining and / or monitoring at least one process variable of a medium
JP6021136B1 (en) * 2016-02-03 2016-11-09 三菱重工工作機械株式会社 Electromagnetic induction type position detector
CN105785447A (en) * 2016-02-29 2016-07-20 杭州立方控股股份有限公司 Medium inductive channel target detection method
KR102115520B1 (en) * 2017-04-03 2020-05-26 삼성전기주식회사 Actuator of camera module
US11237649B2 (en) * 2017-08-10 2022-02-01 Mediatek Singapore Pte. Ltd. Inductive beacon for time-keying virtual reality applications
FR3079298B1 (en) * 2018-03-23 2020-11-27 Safran Landing Systems DEVICE FOR MEASURING A POSITION OF A MOBILE BODY IN RELATION TO A FIXED BODY
EP3583894A1 (en) * 2018-06-18 2019-12-25 Koninklijke Philips N.V. Inductive sensing device and method
EP3583892A1 (en) * 2018-06-20 2019-12-25 Koninklijke Philips N.V. Pressure sensing unit, system and method for remote pressure sensing
EP3620109A1 (en) 2018-09-04 2020-03-11 Koninklijke Philips N.V. Inductive sensing device and method
DE102019103670B4 (en) * 2019-02-13 2024-07-25 Balluff Gmbh Inductive sensor and method for its operation
US10760928B1 (en) * 2019-02-21 2020-09-01 Microsemi Corporation Planar linear inductive position sensor having edge effect compensation
US11293744B2 (en) * 2019-03-01 2022-04-05 Renesas Electronics America Inc. Method for increasing the position measurement accuracy using inductive position sensor
US11474135B2 (en) * 2019-04-03 2022-10-18 Cirrus Logic, Inc. Auto-centering of sensor frequency of a resonant sensor
US11611140B2 (en) * 2019-06-05 2023-03-21 Kyocera Avx Components (Werne) Gmbh Systems and methods for sensing a level of a volume of a liquid in a container using one or more antenna elements
EP3750391B1 (en) * 2019-06-14 2023-08-02 Andreas Stihl AG & Co. KG Method of docking an autonomous mobile green area processing robot to a docking station, green area processing robot and system
US11460326B2 (en) * 2019-08-19 2022-10-04 KYOCERA AVX Components (Werne), GmbH Inductive position sensing apparatus and method for the same
DE102019218399A1 (en) * 2019-11-27 2021-05-27 Infineon Technologies Ag INDUCTIVE ANGLE SENSOR WITH DISTANCE DETERMINATION
US12111187B2 (en) 2021-09-17 2024-10-08 Sensata Technologies, Inc. Inductive position sensor with coil configuration
CN115277330B (en) * 2022-08-03 2024-09-20 珠海格力电器股份有限公司 Signal transmission device, method, apparatus and storage medium
CN115435668A (en) * 2022-09-13 2022-12-06 Oppo广东移动通信有限公司 Measuring device and electronic apparatus
CN115435669A (en) * 2022-09-13 2022-12-06 Oppo广东移动通信有限公司 Measuring device and electronic apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4578992A (en) * 1982-11-05 1986-04-01 Philip E. Galasko Detection of a low pressure condition of a vehicle tire
ES2068053A2 (en) * 1991-07-17 1995-04-01 Bozal Carlos Felipe Cobos Remote device for pressure measurement of a vehicle's tyres
WO2004036148A1 (en) * 2002-10-16 2004-04-29 Tt Electronics Technology Limited Sensing apparatus and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4578992A (en) * 1982-11-05 1986-04-01 Philip E. Galasko Detection of a low pressure condition of a vehicle tire
ES2068053A2 (en) * 1991-07-17 1995-04-01 Bozal Carlos Felipe Cobos Remote device for pressure measurement of a vehicle's tyres
WO2004036148A1 (en) * 2002-10-16 2004-04-29 Tt Electronics Technology Limited Sensing apparatus and method

Also Published As

Publication number Publication date
EP1789757A2 (en) 2007-05-30
WO2006016147A2 (en) 2006-02-16
JP2008509419A (en) 2008-03-27
CN101019005A (en) 2007-08-15
GB0417686D0 (en) 2004-09-08
CN101019006A (en) 2007-08-15

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