DK0678759T3 - Induktiv nærhedsdetektor med indstillelig frekvens - Google Patents

Induktiv nærhedsdetektor med indstillelig frekvens

Info

Publication number
DK0678759T3
DK0678759T3 DK95400768T DK95400768T DK0678759T3 DK 0678759 T3 DK0678759 T3 DK 0678759T3 DK 95400768 T DK95400768 T DK 95400768T DK 95400768 T DK95400768 T DK 95400768T DK 0678759 T3 DK0678759 T3 DK 0678759T3
Authority
DK
Denmark
Prior art keywords
proximity detector
adjustable frequency
inductive proximity
inductive
adjustable
Prior art date
Application number
DK95400768T
Other languages
English (en)
Inventor
Didier Leonard
Christophe Guichard
Original Assignee
Schneider Electric Sa
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 Schneider Electric Sa filed Critical Schneider Electric Sa
Application granted granted Critical
Publication of DK0678759T3 publication Critical patent/DK0678759T3/da

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/101—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil
    • G01V3/102—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil by measuring amplitude

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Electromagnetism (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Electronic Switches (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Near-Field Transmission Systems (AREA)
DK95400768T 1994-04-18 1995-04-06 Induktiv nærhedsdetektor med indstillelig frekvens DK0678759T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9404701A FR2718853B1 (fr) 1994-04-18 1994-04-18 Détecteur de proximité inductif à fréquence ajustable.

Publications (1)

Publication Number Publication Date
DK0678759T3 true DK0678759T3 (da) 2000-04-17

Family

ID=9462294

Family Applications (1)

Application Number Title Priority Date Filing Date
DK95400768T DK0678759T3 (da) 1994-04-18 1995-04-06 Induktiv nærhedsdetektor med indstillelig frekvens

Country Status (6)

Country Link
US (1) US5508662A (da)
EP (1) EP0678759B1 (da)
JP (1) JPH07297767A (da)
DE (1) DE69507734T2 (da)
DK (1) DK0678759T3 (da)
FR (1) FR2718853B1 (da)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2771822B1 (fr) * 1997-11-28 1999-12-31 Schneider Electric Sa Detecteur de proximite inductif configurable
JP2000307344A (ja) * 1999-04-16 2000-11-02 Fujitsu Ltd 電圧制御発振器及び半導体集積回路装置
US6650111B2 (en) * 2001-07-18 2003-11-18 Eaton Corporation Pulsed excited proximity sensor
US7142113B2 (en) * 2004-02-17 2006-11-28 Sensormatic Electronics Corporation Method and apparatus to detect an external source
US7173410B1 (en) * 2004-09-28 2007-02-06 Rockwell Automation Technologies, Inc. Proximity sensor combining impedance, frequency and decay constant information
US7173411B1 (en) * 2004-09-30 2007-02-06 Rockwell Automation Technologies, Inc. Inductive proximity sensor using coil time constant for temperature compensation
DE102007003374A1 (de) * 2006-02-22 2007-09-20 Pepperl + Fuchs Gmbh Induktiver Näherungsschalter sowie Verfahren zum Betreiben eines solchen
CN101498753B (zh) * 2008-02-01 2011-04-13 中茂电子(深圳)有限公司 可根据待测物阻抗调整操作频宽的负载装置与调整方法
US8692541B2 (en) * 2011-10-05 2014-04-08 David Scott Nyce Position sensing head with redundancy
US9052350B2 (en) * 2012-07-31 2015-06-09 General Electric Company On-line monitoring system for use with electrical assets and method of operating the same
CN105353417A (zh) * 2015-09-28 2016-02-24 芜湖市恒峰科技有限公司 一种低功耗地下金属管道探测电路
US10908312B2 (en) 2016-06-24 2021-02-02 Stanley Black & Decker Inc. Systems and methods for locating a metal object
CN210155345U (zh) 2016-06-24 2020-03-17 史丹利百得有限公司 用于沿着墙壁结构的表面移动以定位立柱的立柱探测设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848243A (en) * 1973-02-09 1974-11-12 H Schirmer Inductive reactance proximity alarm system for bulky movable objects
FR2281578A1 (fr) * 1974-08-07 1976-03-05 Texas Instruments France Detecteur de proximite
DE3543935A1 (de) * 1985-12-12 1987-06-19 Siemens Ag Induktiver naeherungsschalter

Also Published As

Publication number Publication date
US5508662A (en) 1996-04-16
FR2718853B1 (fr) 1996-05-15
DE69507734T2 (de) 1999-07-22
JPH07297767A (ja) 1995-11-10
FR2718853A1 (fr) 1995-10-20
DE69507734D1 (de) 1999-03-25
EP0678759B1 (fr) 1999-02-10
EP0678759A1 (fr) 1995-10-25

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