CA1122669A - Magnetic detector - Google Patents

Magnetic detector

Info

Publication number
CA1122669A
CA1122669A CA296,268A CA296268A CA1122669A CA 1122669 A CA1122669 A CA 1122669A CA 296268 A CA296268 A CA 296268A CA 1122669 A CA1122669 A CA 1122669A
Authority
CA
Canada
Prior art keywords
detector
ferromagnetic material
ferromagnetic
search
field
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.)
Expired
Application number
CA296,268A
Other languages
English (en)
French (fr)
Inventor
Martin N. Wilson
Ian L. Mcdougall
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.)
IMI Kynoch Ltd
Science Research Council
Original Assignee
IMI Kynoch Ltd
Science Research Council
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 IMI Kynoch Ltd, Science Research Council filed Critical IMI Kynoch Ltd
Application granted granted Critical
Publication of CA1122669A publication Critical patent/CA1122669A/en
Expired legal-status Critical Current

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
    • G01V3/104—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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
CA296,268A 1977-02-01 1978-02-01 Magnetic detector Expired CA1122669A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB401577A GB1570640A (en) 1977-02-01 1977-02-01 Magnetic detector
GB4015/77 1977-02-01

Publications (1)

Publication Number Publication Date
CA1122669A true CA1122669A (en) 1982-04-27

Family

ID=9769153

Family Applications (1)

Application Number Title Priority Date Filing Date
CA296,268A Expired CA1122669A (en) 1977-02-01 1978-02-01 Magnetic detector

Country Status (5)

Country Link
JP (1) JPS53121648A (US06330241-20011211-M00004.png)
CA (1) CA1122669A (US06330241-20011211-M00004.png)
DE (1) DE2804090A1 (US06330241-20011211-M00004.png)
FR (1) FR2379077A1 (US06330241-20011211-M00004.png)
GB (1) GB1570640A (US06330241-20011211-M00004.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017205958A1 (en) * 2015-06-02 2017-12-07 Syncrude Canada Ltd. In Trust For The Owners Of The Syncrude Project As Such Owners Exist Now And In The Future Tramp metal detection

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494447A1 (fr) * 1980-11-14 1982-05-21 Radiotechnique Procede pour detecter la presence d'une piece metallique, notamment en mouvement, et dispositif de mise en oeuvre de ce procede
DE3840848A1 (de) * 1988-12-03 1990-06-07 Draegerwerk Ag Werkstoff mit vorgebbarer magnetischer suszeptibilitaet
GB8920957D0 (en) * 1989-09-15 1989-11-01 Hitech Metal Detectors Ltd Metal detecting apparatus and apparatus for testing metal detecting apparatus
WO1992001956A1 (en) * 1990-07-20 1992-02-06 John Lysaght (Australia) Limited Strip position sensor
DE19830584C2 (de) * 1997-10-11 2001-11-22 Mesutronic Geraetebau Gmbh Aufnehmer-Vorrichtung
DE19954716B4 (de) * 1999-11-13 2006-08-31 Mesutronic Gerätebau GmbH Funktionsprüfung für einen Metalldetektor
CN101571598B (zh) * 2009-05-26 2011-07-27 包剑刚 一种铁制小零件的探测器
CN104549726B (zh) * 2015-01-04 2017-01-25 湖北省地质勘查装备中心 中磁电磁分选仪
CN112824871B (zh) * 2019-11-20 2022-11-15 中国南方电网有限责任公司超高压输电公司贵阳局 基于瞬变电磁视电阻率成像技术的接地网缺陷诊断方法
CN116380163B (zh) * 2023-03-29 2024-01-19 青岛峻海物联科技有限公司 一种用于物联网的智能环境数据采集的传感装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2045769A (en) * 1928-05-31 1936-06-30 Rca Corp Electrical control circuit
US2315045A (en) * 1939-10-09 1943-03-30 Illinois Testing Laboratories Metal detection device
US2444751A (en) * 1946-02-12 1948-07-06 Western Electric Co Method and apparatus for sorting magnetic materials according to their residual magnetism
FR928347A (fr) * 1946-05-20 1947-11-25 Perfectionnements aux dispositifs pour détecter les corps ferreux ou magnétiques ou les irrégularités qui existent dans les objets ferreux ou magnétiques
JPS51120792A (en) * 1975-04-16 1976-10-22 Densoku Kogyo Kk Device for detecting metals mixed in fluids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017205958A1 (en) * 2015-06-02 2017-12-07 Syncrude Canada Ltd. In Trust For The Owners Of The Syncrude Project As Such Owners Exist Now And In The Future Tramp metal detection
US10274630B2 (en) 2015-06-02 2019-04-30 Syncrude Canada Ltd. In Trust For The Owners Of The Syncrude Project As Such Owners Exist Now And In The Future Tramp metal detection

Also Published As

Publication number Publication date
DE2804090A1 (de) 1978-08-24
JPS53121648A (en) 1978-10-24
FR2379077A1 (fr) 1978-08-25
FR2379077B1 (US06330241-20011211-M00004.png) 1984-05-25
GB1570640A (en) 1980-07-02

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Legal Events

Date Code Title Description
MKEX Expiry