BE871580A - Systeme electromagnetique de detection - Google Patents

Systeme electromagnetique de detection

Info

Publication number
BE871580A
BE871580A BE6046650A BE6046650A BE871580A BE 871580 A BE871580 A BE 871580A BE 6046650 A BE6046650 A BE 6046650A BE 6046650 A BE6046650 A BE 6046650A BE 871580 A BE871580 A BE 871580A
Authority
BE
Belgium
Prior art keywords
detection system
electromagnetic detection
electromagnetic
detection
Prior art date
Application number
BE6046650A
Other languages
English (en)
Original Assignee
Janssen Lambert
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 Janssen Lambert filed Critical Janssen Lambert
Priority to BE6046650A priority Critical patent/BE871580A/fr
Publication of BE871580A publication Critical patent/BE871580A/fr
Priority to US06/086,482 priority patent/US4354178A/en

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
    • G08B13/24—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
    • 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)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
BE6046650A 1978-10-26 1978-10-26 Systeme electromagnetique de detection BE871580A (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE6046650A BE871580A (fr) 1978-10-26 1978-10-26 Systeme electromagnetique de detection
US06/086,482 US4354178A (en) 1978-10-26 1979-10-19 Electrodynamic balance for a detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE6046650A BE871580A (fr) 1978-10-26 1978-10-26 Systeme electromagnetique de detection

Publications (1)

Publication Number Publication Date
BE871580A true BE871580A (fr) 1979-02-15

Family

ID=3874801

Family Applications (1)

Application Number Title Priority Date Filing Date
BE6046650A BE871580A (fr) 1978-10-26 1978-10-26 Systeme electromagnetique de detection

Country Status (2)

Country Link
US (1) US4354178A (fr)
BE (1) BE871580A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538915A1 (fr) * 1983-01-03 1984-07-06 Bernard Jacques Dispositif et procede de detection d'objets metalliques tels que les armes a feu, et sas d'acces de locaux a proteger contre les agressions

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4821023A (en) * 1988-01-07 1989-04-11 Del Norte Technology, Inc. Walk-through metal detector
FR2640052B1 (fr) * 1988-12-02 1991-03-15 Bourgeton Jean Pierre Dispositif pour detecter le passage et le sens de franchissement
US5318229A (en) * 1992-11-18 1994-06-07 Brown John D Protective device for paper shredders
US20090001978A1 (en) * 2007-06-18 2009-01-01 Tk Holdings Inc. Sensor system
US20090289625A1 (en) * 2007-06-18 2009-11-26 Tk Holdings Inc. Sensor system
US20110016994A1 (en) * 2009-07-23 2011-01-27 Sebel Furniture Ltd Plastic article and its fabrication

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3493955A (en) * 1968-04-17 1970-02-03 Monere Corp Method and apparatus for detecting the unauthorized movement of articles
GB1232672A (fr) * 1968-07-10 1971-05-19
US3686564A (en) * 1970-10-08 1972-08-22 Westinghouse Electric Corp Multiple frequency magnetic field technique for differentiating between classes of metal objects
US4012690A (en) * 1974-01-22 1977-03-15 Solomon Heytow Device for selectively detecting different kinds and sizes of metals
US4118693A (en) * 1977-05-09 1978-10-03 Knogo Corporation Method and apparatus for producing uniform electromagnetic fields in an article detection system
US4223302A (en) * 1979-03-05 1980-09-16 Marvel Engineering Company Conditions monitoring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538915A1 (fr) * 1983-01-03 1984-07-06 Bernard Jacques Dispositif et procede de detection d'objets metalliques tels que les armes a feu, et sas d'acces de locaux a proteger contre les agressions

Also Published As

Publication number Publication date
US4354178A (en) 1982-10-12

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: JANSSEN LAMBERT

Effective date: 19931031