FR2456951B1 - - Google Patents

Info

Publication number
FR2456951B1
FR2456951B1 FR7912313A FR7912313A FR2456951B1 FR 2456951 B1 FR2456951 B1 FR 2456951B1 FR 7912313 A FR7912313 A FR 7912313A FR 7912313 A FR7912313 A FR 7912313A FR 2456951 B1 FR2456951 B1 FR 2456951B1
Authority
FR
France
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
FR7912313A
Other versions
FR2456951A1 (fr
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.)
Georgetown University
Original Assignee
Georgetown University
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 Georgetown University filed Critical Georgetown University
Publication of FR2456951A1 publication Critical patent/FR2456951A1/fr
Application granted granted Critical
Publication of FR2456951B1 publication Critical patent/FR2456951B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit
    • 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
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Remote Sensing (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Electrochemistry (AREA)
  • Biochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
FR7912313A 1978-08-25 1979-05-15 Procede et appareil pour l'identification d'objets dissimules conducteurs de l'electricite Granted FR2456951A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782837265 DE2837265C2 (de) 1978-08-25 1978-08-25 Verfahren zur Identifizierung von Objekten mit leitenden Eigenschaften und Schaltungsanordnung zur Durchführung dieses Verfahrens

Publications (2)

Publication Number Publication Date
FR2456951A1 FR2456951A1 (fr) 1980-12-12
FR2456951B1 true FR2456951B1 (fr) 1985-04-19

Family

ID=6047949

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7912313A Granted FR2456951A1 (fr) 1978-08-25 1979-05-15 Procede et appareil pour l'identification d'objets dissimules conducteurs de l'electricite

Country Status (7)

Country Link
CA (1) CA1157096A (fr)
CH (1) CH660799A5 (fr)
DE (1) DE2837265C2 (fr)
FR (1) FR2456951A1 (fr)
GB (1) GB1603578A (fr)
NL (1) NL7903965A (fr)
SE (1) SE440832B (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3228447C2 (de) * 1982-07-30 1986-04-10 Vallon GmbH, 7412 Eningen Meßverfahren zur Erkennung von metallischen Gegenständen und Metalldetektor zur Durchführung des Verfahrens
FR2545221B1 (fr) * 1983-04-29 1985-12-13 Thomson Jeumont Cables Capteur de donnees, par courant de foucault, et ensemble de controle de resistivite muni d'un tel capteur
GB2140564B (en) * 1983-05-23 1986-10-22 Central Electr Generat Board Cable corrosion monitor
EP0211905B1 (fr) * 1985-02-15 1990-10-03 The Broken Hill Proprietary Company Limited Classification de l'acier
DE3713363A1 (de) * 1987-04-21 1988-11-10 Friedrich Prof Dr Foerster Suchgeraet zum suchen von metallteilen
CN1049287A (zh) * 1989-05-24 1991-02-20 住友电气工业株式会社 治疗导管
GB8920412D0 (en) * 1989-09-08 1989-10-25 Ca Atomic Energy Ltd Metal detecting system
DE19521266C1 (de) * 1995-06-10 1997-02-13 Mesutronic Geraetebau Gmbh Einrichtung zur Feststellung metallisch leitender Teile
US6359582B1 (en) * 1996-09-18 2002-03-19 The Macaleese Companies, Inc. Concealed weapons detection system
US7167123B2 (en) 1999-05-25 2007-01-23 Safe Zone Systems, Inc. Object detection method and apparatus
US7450052B2 (en) 1999-05-25 2008-11-11 The Macaleese Companies, Inc. Object detection method and apparatus
DE19954716B4 (de) * 1999-11-13 2006-08-31 Mesutronic Gerätebau GmbH Funktionsprüfung für einen Metalldetektor
DE10309132A1 (de) 2003-02-28 2004-11-18 Forschungszentrum Jülich GmbH Verfahren und Vorrichtung zum selektiven Nachweis magnetischer Partikel
US7976518B2 (en) 2005-01-13 2011-07-12 Corpak Medsystems, Inc. Tubing assembly and signal generator placement control device and method for use with catheter guidance systems
EP2439560B1 (fr) 2010-10-07 2013-05-29 Mettler-Toledo Safeline Limited Procédé de fonctionnement d'un système de détection de métaux et système de détection de métaux
EP2439559B1 (fr) 2010-10-07 2013-05-29 Mettler-Toledo Safeline Limited Procédé de fonctionnement d'un système de détection de métaux et système de détection de métaux
CN103180760B (zh) 2010-10-07 2016-10-26 梅特勒-托利多安全线有限公司 用于操作金属探测系统的方法以及金属探测系统
US9028441B2 (en) 2011-09-08 2015-05-12 Corpak Medsystems, Inc. Apparatus and method used with guidance system for feeding and suctioning
US9018935B2 (en) 2011-09-19 2015-04-28 Mettler-Toledo Safeline Limited Method for operating a metal detection apparatus and apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676772A (en) * 1970-08-18 1972-07-11 Nasa Metallic intrusion detector system
US3686564A (en) * 1970-10-08 1972-08-22 Westinghouse Electric Corp Multiple frequency magnetic field technique for differentiating between classes of metal objects
GB1482976A (en) * 1975-06-09 1977-08-17 Spencer P Metal detectors

Also Published As

Publication number Publication date
CH660799A5 (en) 1987-06-15
GB1603578A (en) 1981-11-25
FR2456951A1 (fr) 1980-12-12
SE440832B (sv) 1985-08-19
DE2837265C2 (de) 1987-02-05
CA1157096A (fr) 1983-11-15
NL7903965A (nl) 1980-11-25
DE2837265A1 (de) 1980-03-06
SE7904329L (sv) 1980-11-18

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Legal Events

Date Code Title Description
ST Notification of lapse