BE809070Q - IMPROVEMENTS IN ELECTROMAGNETIC DEVICES SUITABLE FOR DETECTION OF METAL OBJECTS - Google Patents

IMPROVEMENTS IN ELECTROMAGNETIC DEVICES SUITABLE FOR DETECTION OF METAL OBJECTS

Info

Publication number
BE809070Q
BE809070Q BE6044401A BE6044401A BE809070Q BE 809070 Q BE809070 Q BE 809070Q BE 6044401 A BE6044401 A BE 6044401A BE 6044401 A BE6044401 A BE 6044401A BE 809070 Q BE809070 Q BE 809070Q
Authority
BE
Belgium
Prior art keywords
detection
devices suitable
metal objects
electromagnetic devices
electromagnetic
Prior art date
Application number
BE6044401A
Other languages
French (fr)
Original Assignee
Ancet Victor
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 Ancet Victor filed Critical Ancet Victor
Application granted granted Critical
Publication of BE809070Q publication Critical patent/BE809070Q/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • 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)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
BE6044401A 1970-01-14 1973-12-21 IMPROVEMENTS IN ELECTROMAGNETIC DEVICES SUITABLE FOR DETECTION OF METAL OBJECTS BE809070Q (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7001481A FR2076468A5 (en) 1970-01-14 1970-01-14

Publications (1)

Publication Number Publication Date
BE809070Q true BE809070Q (en) 1974-04-16

Family

ID=9049109

Family Applications (1)

Application Number Title Priority Date Filing Date
BE6044401A BE809070Q (en) 1970-01-14 1973-12-21 IMPROVEMENTS IN ELECTROMAGNETIC DEVICES SUITABLE FOR DETECTION OF METAL OBJECTS

Country Status (2)

Country Link
BE (1) BE809070Q (en)
FR (1) FR2076468A5 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135184A (en) * 1977-08-31 1979-01-16 Knogo Corporation Electronic theft detection system for monitoring wide passageways
ZA889254B (en) * 1987-12-10 1990-08-29 Uniscan Ltd Powering and communication apparatus and method(s)
US6970086B2 (en) 2001-10-25 2005-11-29 The Johns Hopkins University Wide area metal detection (WAMD) system and method for security screening crowds
WO2008028487A1 (en) * 2006-09-07 2008-03-13 Alert Metalguard Aps A system and a method for electronically monitoring goods

Also Published As

Publication number Publication date
FR2076468A5 (en) 1971-10-15

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