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FR2566136B2 - DEVICE FOR DETECTING A MAGNETIC TARGET IN A DEFINED PROXIMITY AREA - Google Patents
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FR2566136B2 - DEVICE FOR DETECTING A MAGNETIC TARGET IN A DEFINED PROXIMITY AREA - Google Patents

DEVICE FOR DETECTING A MAGNETIC TARGET IN A DEFINED PROXIMITY AREA

Info

Publication number
FR2566136B2
FR2566136B2 FR8409484A FR8409484A FR2566136B2 FR 2566136 B2 FR2566136 B2 FR 2566136B2 FR 8409484 A FR8409484 A FR 8409484A FR 8409484 A FR8409484 A FR 8409484A FR 2566136 B2 FR2566136 B2 FR 2566136B2
Authority
FR
France
Prior art keywords
detecting
magnetic target
proximity area
defined proximity
area
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
FR8409484A
Other languages
French (fr)
Other versions
FR2566136A2 (en
Inventor
Mihail Macovschi
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.)
PETERCEM SA
Original Assignee
PETERCEM SA
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
Priority claimed from FR8203694A external-priority patent/FR2522830B1/en
Application filed by PETERCEM SA filed Critical PETERCEM SA
Priority to FR8409484A priority Critical patent/FR2566136B2/en
Publication of FR2566136A2 publication Critical patent/FR2566136A2/en
Application granted granted Critical
Publication of FR2566136B2 publication Critical patent/FR2566136B2/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
    • G01V3/101—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 by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil

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)
  • Electronic Switches (AREA)
FR8409484A 1982-03-05 1984-06-18 DEVICE FOR DETECTING A MAGNETIC TARGET IN A DEFINED PROXIMITY AREA Expired FR2566136B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8409484A FR2566136B2 (en) 1982-03-05 1984-06-18 DEVICE FOR DETECTING A MAGNETIC TARGET IN A DEFINED PROXIMITY AREA

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8203694A FR2522830B1 (en) 1982-03-05 1982-03-05 METHOD AND DEVICE FOR DETECTING A MAGNETIC TARGET IN A DEFINED PROXIMITY AREA
FR8409484A FR2566136B2 (en) 1982-03-05 1984-06-18 DEVICE FOR DETECTING A MAGNETIC TARGET IN A DEFINED PROXIMITY AREA

Publications (2)

Publication Number Publication Date
FR2566136A2 FR2566136A2 (en) 1985-12-20
FR2566136B2 true FR2566136B2 (en) 1987-05-15

Family

ID=26222796

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8409484A Expired FR2566136B2 (en) 1982-03-05 1984-06-18 DEVICE FOR DETECTING A MAGNETIC TARGET IN A DEFINED PROXIMITY AREA

Country Status (1)

Country Link
FR (1) FR2566136B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3546245C3 (en) * 1985-12-28 1994-11-17 Link Walter Non-contact proximity switch
DE19758365B4 (en) * 1997-12-22 2004-07-08 Siemens Ag Vehicle device for point inductive train control

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH624220A5 (en) * 1978-04-04 1981-07-15 Radioelectrique Comp Ind
US4323847A (en) * 1979-06-11 1982-04-06 Triple Dee Electronics Inc. Oscillator type metal detector with switch controlled fixed biasing
FR2522830B1 (en) * 1982-03-05 1985-09-06 Petercem Sa METHOD AND DEVICE FOR DETECTING A MAGNETIC TARGET IN A DEFINED PROXIMITY AREA

Also Published As

Publication number Publication date
FR2566136A2 (en) 1985-12-20

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Legal Events

Date Code Title Description
TP Transmission of property
TP Transmission of property