WO2012172435A3 - A transverse electromagnetic gradiometer including an electromagnetometer having a longitudinal slit in the electrostatic shield - Google Patents

A transverse electromagnetic gradiometer including an electromagnetometer having a longitudinal slit in the electrostatic shield Download PDF

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Publication number
WO2012172435A3
WO2012172435A3 PCT/IB2012/001656 IB2012001656W WO2012172435A3 WO 2012172435 A3 WO2012172435 A3 WO 2012172435A3 IB 2012001656 W IB2012001656 W IB 2012001656W WO 2012172435 A3 WO2012172435 A3 WO 2012172435A3
Authority
WO
WIPO (PCT)
Prior art keywords
transverse electromagnetic
faulty
electromagnetic gradiometer
harmonic signatures
electrostatic shield
Prior art date
Application number
PCT/IB2012/001656
Other languages
French (fr)
Other versions
WO2012172435A2 (en
Inventor
Dieter Wolfgang Blum
Original Assignee
Rampart Detection Systems 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 Rampart Detection Systems Ltd. filed Critical Rampart Detection Systems Ltd.
Publication of WO2012172435A2 publication Critical patent/WO2012172435A2/en
Publication of WO2012172435A3 publication Critical patent/WO2012172435A3/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/028—Electrodynamic magnetometers

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Locating Faults (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

A transverse electromagnetic gradiometer comprising at least two inductive vector electromagnetometers having a magnetically permeable core, an induction coil and a slotted electrostatic shield to feed an amplifier and signal processing arrangement for the detection and subsequent processing of harmonic signatures contained in extremely low-frequency radiation on the order of about 3 hertz to about 3 kilohertz. The transverse electromagnetic gradiometer detects harmonic signatures of various electrical loads, and can also be utilized to detect faulty distribution transformers, faulty streetlight ballasts, illegal power consumption, power bypasses, electrical leakage, poor or faulty neutral- ground bonds, and other conditions that provide characteristics and identifiable harmonic signatures. The transverse electromagnetic gradiometer can also be used to determine location in applications such as a mine collapse or the like. A computer system may further process the obtained harmonic signatures for improved identification capabilities.
PCT/IB2012/001656 2011-05-13 2012-05-10 Transverse electromagnetic gradiometer WO2012172435A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161485997P 2011-05-13 2011-05-13
US61/485,997 2011-05-13

Publications (2)

Publication Number Publication Date
WO2012172435A2 WO2012172435A2 (en) 2012-12-20
WO2012172435A3 true WO2012172435A3 (en) 2013-04-25

Family

ID=47357547

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/001656 WO2012172435A2 (en) 2011-05-13 2012-05-10 Transverse electromagnetic gradiometer

Country Status (1)

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WO (1) WO2012172435A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104500144B (en) * 2014-12-29 2017-01-25 山东华硕能源科技有限公司 Mining multifunctional safety production online detection monitoring substation and working method thereof
CN116738259B (en) * 2023-08-14 2023-11-07 西南交通大学 Multi-harmonic-based electromagnetic leakage radiation source fingerprint extraction and identification method and device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5660368A (en) * 1979-10-23 1981-05-25 Nippon Telegr & Teleph Corp <Ntt> Magnetic field vector detector
EP0481211A2 (en) * 1990-10-09 1992-04-22 International Business Machines Corporation Gradiometer having a magnetometer which cancels background magnetic field from other magnetometers
GB2283823A (en) * 1993-11-10 1995-05-17 Ultra Electronics Ltd Measurement of alternating magnetic fields in presence of steady magnetic field e.g. earth's field
US20040046553A1 (en) * 2000-10-18 2004-03-11 Jean-Michel Leger Vector measurement of a magnetic field

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5660368A (en) * 1979-10-23 1981-05-25 Nippon Telegr & Teleph Corp <Ntt> Magnetic field vector detector
EP0481211A2 (en) * 1990-10-09 1992-04-22 International Business Machines Corporation Gradiometer having a magnetometer which cancels background magnetic field from other magnetometers
GB2283823A (en) * 1993-11-10 1995-05-17 Ultra Electronics Ltd Measurement of alternating magnetic fields in presence of steady magnetic field e.g. earth's field
US20040046553A1 (en) * 2000-10-18 2004-03-11 Jean-Michel Leger Vector measurement of a magnetic field

Also Published As

Publication number Publication date
WO2012172435A2 (en) 2012-12-20

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