CA2424250A1 - Apparatus for measuring terrain conductivity - Google Patents

Apparatus for measuring terrain conductivity Download PDF

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Publication number
CA2424250A1
CA2424250A1 CA002424250A CA2424250A CA2424250A1 CA 2424250 A1 CA2424250 A1 CA 2424250A1 CA 002424250 A CA002424250 A CA 002424250A CA 2424250 A CA2424250 A CA 2424250A CA 2424250 A1 CA2424250 A1 CA 2424250A1
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CA
Canada
Prior art keywords
terrain
temperature
conductivity
dependent correction
signal
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002424250A
Other languages
French (fr)
Other versions
CA2424250C (en
Inventor
Miroslav Bosnar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Geonics Ltd
Original Assignee
Geonics Ltd
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 Geonics Ltd filed Critical Geonics Ltd
Publication of CA2424250A1 publication Critical patent/CA2424250A1/en
Application granted granted Critical
Publication of CA2424250C publication Critical patent/CA2424250C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G01V3/104—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 using several coupled or uncoupled coils

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)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

A conductivity meter for measuring conductivity of terrain, including a first transmitter coil, a signal generator connected to the first transmitter coil to supply a time-varying current thereto for inducing eddy currents in the terrain, a first receiver coil horizontally spaced from the first transmitter coil, a temperature sensing device for measuring temperature, and a signal processor, including a memory storing a plurality of temperature dependent correction values, for isolating from a signal received by the first receiver coil a secondary signal representative of a secondary magnetic field generated in the terrain by the eddy currents, and determining an apparent terrain conductivity based on the isolated secondary signal and a selected temperature dependent correction value selected from the stored temperature dependent correction values according to a measured temperature received from the temperature sensing device.
CA002424250A 2002-04-02 2003-04-02 Apparatus for measuring terrain conductivity Expired - Lifetime CA2424250C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/114,235 2002-04-02
US10/114,235 US6710599B2 (en) 2002-04-02 2002-04-02 Apparatus for measuring terrain conductivity

Publications (2)

Publication Number Publication Date
CA2424250A1 true CA2424250A1 (en) 2003-10-02
CA2424250C CA2424250C (en) 2006-05-30

Family

ID=28453763

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002424250A Expired - Lifetime CA2424250C (en) 2002-04-02 2003-04-02 Apparatus for measuring terrain conductivity

Country Status (2)

Country Link
US (1) US6710599B2 (en)
CA (1) CA2424250C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018014891A1 (en) 2016-07-19 2018-01-25 Forschungszentrum Jülich GmbH Calibration method for electromagnetic induction measurement systems, and apparatus

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10249495B3 (en) * 2002-10-24 2004-05-27 Daimlerchrysler Ag Function testing device for loudspeakers in automobile passenger compartment, using evaluation of magnetic AC fields provided by loudspeakers
US7463987B2 (en) * 2003-09-19 2008-12-09 Takata Holdings, Inc. Magnetic sensing system and method
US7759941B2 (en) * 2008-02-07 2010-07-20 Geonics Limited Ground conductivity meter with automatic calibration
JP5424295B2 (en) * 2008-06-16 2014-02-26 独立行政法人石油天然ガス・金属鉱物資源機構 Underground electromagnetic exploration method
US8749239B2 (en) 2008-10-02 2014-06-10 Certusview Technologies, Llc Locate apparatus having enhanced features for underground facility locate operations, and associated methods and systems
CA2692115C (en) * 2009-02-11 2016-03-15 Certusview Technologies, Llc Locate apparatus having enhanced features for underground facility locate operations, and associated methods and systems
US7675289B1 (en) * 2009-07-04 2010-03-09 Stolar, Inc. Underground anomalies detection vehicle and trailer
CA2771286C (en) 2009-08-11 2016-08-30 Certusview Technologies, Llc Locating equipment communicatively coupled to or equipped with a mobile/portable device
DE102010031147A1 (en) 2010-05-07 2011-11-10 Robert Bosch Gmbh Detecting a metallic or magnetic object
DE102012008194A1 (en) 2012-04-26 2013-10-31 Forschungszentrum Jülich GmbH Electromagnetic conductivity measuring system with improved drift correction
KR102124215B1 (en) * 2013-02-04 2020-06-17 가부시키가이샤 호리바 어드밴스트 테크노 Conductivity meter, and method for correcting measurement, setting initial state and calibration of conductivity meter
DE102015213985A1 (en) * 2015-03-30 2016-10-06 Okm Gmbh Locator probe arrangement
FR3049068B1 (en) * 2016-03-16 2018-04-06 Senstronic INDUCTIVE FACTOR DETECTOR DEVICE 1
DE102018220532B4 (en) * 2018-11-29 2020-06-10 Forschungszentrum Jülich GmbH Inductive measuring device with calibration device and method
US11073592B2 (en) 2019-07-17 2021-07-27 Eagle Technology, Llc Enhanced LORAN system generating correction factors based upon satellite-derived data and related methods

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1036221A (en) 1976-06-02 1978-08-08 Geonics Limited Method and apparatus for measuring terrain resistivity
US4199720A (en) 1978-07-27 1980-04-22 Mcneill J Duncan Method for investigating the conductivity of layered terrain
US4682113A (en) * 1985-12-03 1987-07-21 Tbi Pure water conductivity sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018014891A1 (en) 2016-07-19 2018-01-25 Forschungszentrum Jülich GmbH Calibration method for electromagnetic induction measurement systems, and apparatus
DE102016008841A1 (en) 2016-07-19 2018-01-25 Forschungszentrum Jülich GmbH Calibration method for electromagnetic induction measurement systems and apparatus

Also Published As

Publication number Publication date
US6710599B2 (en) 2004-03-23
US20030184301A1 (en) 2003-10-02
CA2424250C (en) 2006-05-30

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Effective date: 20230403