IT1147941B - ELECTROMAGNETIC DETECTION DEVICE FOR METALLIC OBJECTS - Google Patents

ELECTROMAGNETIC DETECTION DEVICE FOR METALLIC OBJECTS

Info

Publication number
IT1147941B
IT1147941B IT48333/82A IT4833382A IT1147941B IT 1147941 B IT1147941 B IT 1147941B IT 48333/82 A IT48333/82 A IT 48333/82A IT 4833382 A IT4833382 A IT 4833382A IT 1147941 B IT1147941 B IT 1147941B
Authority
IT
Italy
Prior art keywords
detection device
metallic objects
electromagnetic detection
electromagnetic
metallic
Prior art date
Application number
IT48333/82A
Other languages
Italian (it)
Other versions
IT8248333A0 (en
Inventor
Karl-Erik Moberg
Original Assignee
Bofors Ab
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 Bofors Ab filed Critical Bofors Ab
Publication of IT8248333A0 publication Critical patent/IT8248333A0/en
Application granted granted Critical
Publication of IT1147941B publication Critical patent/IT1147941B/en

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Electromagnetism (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
IT48333/82A 1981-05-06 1982-05-05 ELECTROMAGNETIC DETECTION DEVICE FOR METALLIC OBJECTS IT1147941B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8102827A SE426269B (en) 1981-05-06 1981-05-06 DEVICE FOR THE DETECTION OF METAL FORMS

Publications (2)

Publication Number Publication Date
IT8248333A0 IT8248333A0 (en) 1982-05-05
IT1147941B true IT1147941B (en) 1986-11-26

Family

ID=20343740

Family Applications (1)

Application Number Title Priority Date Filing Date
IT48333/82A IT1147941B (en) 1981-05-06 1982-05-05 ELECTROMAGNETIC DETECTION DEVICE FOR METALLIC OBJECTS

Country Status (11)

Country Link
JP (1) JPS57192887A (en)
BE (1) BE893088A (en)
CA (1) CA1198165A (en)
CH (1) CH656231A5 (en)
DE (1) DE3217033A1 (en)
FR (1) FR2505508B1 (en)
GB (1) GB2097933B (en)
IT (1) IT1147941B (en)
NL (1) NL8201811A (en)
NO (1) NO821485L (en)
SE (1) SE426269B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59141001A (en) * 1983-02-01 1984-08-13 Mitsubishi Electric Corp Detecting method for effective end position of metallic pipe
SE470289B (en) * 1992-11-04 1994-01-10 Bofors Ab Magnetic zone tube
US5426363A (en) * 1993-04-26 1995-06-20 Kabushiki Kaisha Honda Denshi Giken Object detecting device
WO2009155668A1 (en) * 2008-06-27 2009-12-30 Minelab Electronics Pty Limited Constant current metal detector with driven transmit coil

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB835128A (en) * 1955-09-17 1960-05-18 Asea Ab Apparatus for examining a substance utilising the effect of the substance on the q factor of a resonant circuit
DE2052989C3 (en) * 1970-10-30 1973-11-08 Guenther Dipl.-Ing. 2209 Sushoern Weber Switching device triggered by one or more moving objects
GB1448877A (en) * 1973-09-04 1976-09-08 Weber G Electronic switching device for sensing a body and for converting such sensing into an electrical signal
GB1561641A (en) * 1976-08-05 1980-02-27 Redland Automation Ltd Presence detector apparatus
LU75628A1 (en) * 1976-08-19 1978-04-13
DE2722498C3 (en) * 1977-05-18 1982-02-04 Walter Ing.(Grad.) 8728 Hassfurt Voll Device on a motor vehicle for displaying a minimum distance
DE2722511A1 (en) * 1977-05-18 1978-11-30 Voll Walter METAL DETECTOR

Also Published As

Publication number Publication date
GB2097933B (en) 1985-05-15
SE426269B (en) 1982-12-20
CH656231A5 (en) 1986-06-13
GB2097933A (en) 1982-11-10
FR2505508B1 (en) 1985-11-29
JPS57192887A (en) 1982-11-27
SE8102827L (en) 1982-11-07
IT8248333A0 (en) 1982-05-05
CA1198165A (en) 1985-12-17
NL8201811A (en) 1982-12-01
DE3217033C2 (en) 1991-01-03
FR2505508A1 (en) 1982-11-12
BE893088A (en) 1982-08-30
NO821485L (en) 1982-11-08
DE3217033A1 (en) 1982-11-25

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