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IN2014DN06597A - - Google Patents

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Publication number
IN2014DN06597A
IN2014DN06597A IN6597DEN2014A IN2014DN06597A IN 2014DN06597 A IN2014DN06597 A IN 2014DN06597A IN 6597DEN2014 A IN6597DEN2014 A IN 6597DEN2014A IN 2014DN06597 A IN2014DN06597 A IN 2014DN06597A
Authority
IN
India
Prior art keywords
coil
metal detector
aperture
detection zone
entrance
Prior art date
Application number
Inventor
Daren Butterworth
Alfred Alexander Taylor
Darren Ken Alchin
Original Assignee
Mettler Toledo Safeline Ltd
Tna Australia Pty 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 Mettler Toledo Safeline Ltd, Tna Australia Pty Ltd filed Critical Mettler Toledo Safeline Ltd
Publication of IN2014DN06597A publication Critical patent/IN2014DN06597A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/023—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance where the material is placed in the field of a coil
    • 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
    • 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
    • G01V3/105—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 forming directly coupled primary and secondary coils or loops
    • G01V3/107—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 forming directly coupled primary and secondary coils or loops using compensating coil or loop arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2617—Measuring dielectric properties, e.g. constants
    • G01R27/2635—Sample holders, electrodes or excitation arrangements, e.g. sensors or measuring cells
    • G01R27/267—Coils or antennae arrangements, e.g. coils surrounding the sample or transmitter/receiver antennae
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
    • G01R33/1215—Measuring magnetisation; Particular magnetometers therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

A metal detector (420) has a metallic enclosure (421) with an entrance aperture (430) and an exit aperture (431) whose cross sectional areas differ from each other. Arranged inside the enclosure (421) is a coil system with at least one transmitter coil (423) and at least one first and at least one second receiver coil (424 425). The entrance and exit apertures (430 431) and the coil system (423 424 425) enclose a detection zone (428) through which objects under inspection move along a travel path entering the metal detector (420) through the entrance aperture (430) and leaving the metal detector (420) through the exit aperture (431). The detection zone (428) is asymmetric and its cross sectional profile varies along the travel path from the entrance aperture (430) to the exit aperture (431) wherein the coils (423 424 425) differ in size from each other. The first and second receiver coils (424 425) are connected in series with each other but their windings are wired with the opposite sense of rotation relative to each other. The at least one transmitter coil (423) when energized by an alternating electric current generates a primary electromagnetic field which in turn induces a first voltage in the at least one first receiver coil (424) and a second voltage in the at least one second receiver coil (425). In spite of the asymmetry of the metal detector (420) the first and second voltages cancel each other when there is no metal present in the objects moving through the detection zone.
IN6597DEN2014 2012-02-17 2013-02-12 IN2014DN06597A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12155954.6A EP2629121B1 (en) 2012-02-17 2012-02-17 Metal detector for production and packaging lines
PCT/EP2013/052754 WO2013120836A1 (en) 2012-02-17 2013-02-12 Metal detector for production and packaging lines

Publications (1)

Publication Number Publication Date
IN2014DN06597A true IN2014DN06597A (en) 2015-05-22

Family

ID=47681944

Family Applications (1)

Application Number Title Priority Date Filing Date
IN6597DEN2014 IN2014DN06597A (en) 2012-02-17 2013-02-12

Country Status (12)

Country Link
US (1) US9494539B2 (en)
EP (1) EP2629121B1 (en)
JP (1) JP6143799B2 (en)
KR (1) KR101991368B1 (en)
CN (1) CN104105986B (en)
AU (1) AU2013220509B2 (en)
BR (1) BR112014015903B1 (en)
CA (1) CA2859474C (en)
ES (1) ES2579552T3 (en)
IN (1) IN2014DN06597A (en)
MX (1) MX2014006376A (en)
WO (1) WO2013120836A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2014227559B2 (en) 2013-11-19 2018-02-08 Tna Australia Pty Limited A film drive assembly for a packaging machine
GB2525239A (en) 2014-04-17 2015-10-21 Bombardier Transp Gmbh Object detection system and method for detecting foreign objects in an inductive power transfer system
JP6777305B2 (en) * 2015-08-11 2020-10-28 ハリコム株式会社 Metal detector
EP3182170B1 (en) * 2015-12-17 2023-09-27 Mettler-Toledo Safeline Limited Metal detection apparatus and method for operating a metal detection apparatus
EP3182169B1 (en) * 2015-12-17 2018-12-05 Mettler-Toledo Safeline Limited Metal detection apparatus
CN105572750B (en) * 2015-12-28 2017-03-22 深圳市澳亚迪电子设备有限公司 Self-balance noise reduction metal detection double-coil
CN105842743A (en) * 2016-03-25 2016-08-10 东莞市华盾电子科技有限公司 Detector and production method thereof
AU2017216442B2 (en) 2016-08-15 2022-07-07 Tna Australia Pty Limited A packaging assembly
KR101792573B1 (en) 2017-06-29 2017-11-20 김미숙 Method and apparatus for detecting metal object in food
CZ307498B6 (en) * 2018-01-23 2018-10-17 Konštrukta-TireTech A detector and a locator of ferromagnetic inclusions in a continuously passing medium
CN109917469B (en) * 2019-03-14 2021-04-20 中船海洋探测技术研究院有限公司 Asymmetric high-sensitivity coil magnetic sensor
CN114087919A (en) * 2020-08-25 2022-02-25 祝凌云 Modular multi-stage coil gun
USD987445S1 (en) * 2020-10-01 2023-05-30 Yu Sheng Technology Co., Ltd. Metal detecting machine
US12234090B1 (en) 2023-11-17 2025-02-25 NonObvious LLC Metal detector for a receptacle

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US557212A (en) * 1896-03-31 American
US3588687A (en) * 1969-11-18 1971-06-28 Us Army Sensing coil arrangement for a metal detector
US4866383A (en) * 1988-04-01 1989-09-12 Taliaferro Sam W Method and apparatus having load cell responsive to movement of a magnetic field generator for differentiating between materials
GB9014496D0 (en) 1990-06-29 1990-08-22 Safeline Ltd Metal detectors
US5663642A (en) * 1991-09-24 1997-09-02 The Boeing Company Resonant inductive debris detector
US6204667B1 (en) * 1998-03-18 2001-03-20 Geophex, Ltd. Electromagnetic gradiometer having a primary detector and a plurality of secondary detectors
GB2361544B (en) * 2000-04-20 2004-07-07 Goring Kerr Ltd Metal detector
GB0012994D0 (en) * 2000-05-26 2000-07-19 Ishida Seisakusho Article handling system
JP3857271B2 (en) * 2001-09-21 2006-12-13 トック・エンジニアリング株式会社 Metal foreign object detection method and apparatus
SE527125C2 (en) * 2003-12-31 2005-12-27 Abb Ab Method and apparatus for contactless measurement of thickness or conductivity with electromagnetic induction
WO2006037176A1 (en) * 2004-10-06 2006-04-13 Kenneth Brian Roberts Multi coil metal detector
CN1834690B (en) * 2006-04-12 2010-08-18 郭有军 Through type metal detecting system
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US9599679B2 (en) * 2011-02-25 2017-03-21 Tna Australia Pty Limited Metal detector
EP2544027A1 (en) * 2011-07-08 2013-01-09 Mettler-Toledo Safeline Limited Metal detector for production and packaging lines
ES2435212B1 (en) * 2012-06-15 2014-11-21 Matinsa Proyectos E Instalaciones Industriales, S.L. DEVICE, SYSTEM AND METHOD OF METAL DETECTION
EP2924472B1 (en) * 2014-03-25 2020-01-15 Mettler-Toledo Safeline Limited Method for monitoring the operation of a metal detection system and metal detection system

Also Published As

Publication number Publication date
CN104105986B (en) 2017-12-26
ES2579552T3 (en) 2016-08-12
AU2013220509B2 (en) 2015-12-17
KR101991368B1 (en) 2019-09-30
US9494539B2 (en) 2016-11-15
CA2859474A1 (en) 2013-08-22
AU2013220509A1 (en) 2014-06-12
EP2629121A1 (en) 2013-08-21
WO2013120836A1 (en) 2013-08-22
CN104105986A (en) 2014-10-15
US20140340099A1 (en) 2014-11-20
JP6143799B2 (en) 2017-06-07
AU2013220509A8 (en) 2014-07-10
BR112014015903B1 (en) 2020-11-10
JP2015510591A (en) 2015-04-09
KR20140126310A (en) 2014-10-30
EP2629121B1 (en) 2016-04-06
CA2859474C (en) 2018-12-11
MX2014006376A (en) 2014-10-24

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