FR2547659B1 - METAL OBJECT DETECTORS INDICATING: DISTANCE, SIZE AND MATERIAL - Google Patents

METAL OBJECT DETECTORS INDICATING: DISTANCE, SIZE AND MATERIAL

Info

Publication number
FR2547659B1
FR2547659B1 FR8310140A FR8310140A FR2547659B1 FR 2547659 B1 FR2547659 B1 FR 2547659B1 FR 8310140 A FR8310140 A FR 8310140A FR 8310140 A FR8310140 A FR 8310140A FR 2547659 B1 FR2547659 B1 FR 2547659B1
Authority
FR
France
Prior art keywords
distance
size
metal object
object detectors
detectors indicating
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
FR8310140A
Other languages
French (fr)
Other versions
FR2547659A1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR8310140A priority Critical patent/FR2547659B1/en
Publication of FR2547659A1 publication Critical patent/FR2547659A1/en
Application granted granted Critical
Publication of FR2547659B1 publication Critical patent/FR2547659B1/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
    • G01V3/104—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

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)
  • Geophysics And Detection Of Objects (AREA)
FR8310140A 1983-06-20 1983-06-20 METAL OBJECT DETECTORS INDICATING: DISTANCE, SIZE AND MATERIAL Expired FR2547659B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8310140A FR2547659B1 (en) 1983-06-20 1983-06-20 METAL OBJECT DETECTORS INDICATING: DISTANCE, SIZE AND MATERIAL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8310140A FR2547659B1 (en) 1983-06-20 1983-06-20 METAL OBJECT DETECTORS INDICATING: DISTANCE, SIZE AND MATERIAL

Publications (2)

Publication Number Publication Date
FR2547659A1 FR2547659A1 (en) 1984-12-21
FR2547659B1 true FR2547659B1 (en) 1985-11-22

Family

ID=9289939

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8310140A Expired FR2547659B1 (en) 1983-06-20 1983-06-20 METAL OBJECT DETECTORS INDICATING: DISTANCE, SIZE AND MATERIAL

Country Status (1)

Country Link
FR (1) FR2547659B1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1216946B (en) * 1987-02-03 1990-03-14 Manneschi Giovanni METAL DETECTOR WITH CORRECTION OF DISUNIFORMITIES
ES2006048A6 (en) * 1988-01-15 1989-04-01 Gosalbez Gosalbez Fco Jose Magnetic metal detector system.
FR2626680A1 (en) * 1988-02-02 1989-08-04 Bousquet Alain Device intended to detect and signal the presence of metal masses in a space with specified dimensions
CH676051A5 (en) * 1988-02-12 1990-11-30 Egco Ag
FR2692365B1 (en) * 1992-06-15 1998-04-30 Jacques Clausin DEVICE FOR LOCATING AND EVALUATING THE VOLUMES OF FERROMAGNETIC OBJECTS.
ES2348907T3 (en) * 2002-03-04 2010-12-16 Sicpa Holding Sa PROBE MEASUREMENT AND AUTHENTICATION DEVICE THAT INCLUDES THE SAME.
FR2907211B1 (en) * 2006-10-16 2009-01-23 Nanotec Solution Soc Civ Ile "INDUCTIVE DEVICE FOR MEASURING THE POSITION OF A TARGET AND METHOD IMPLEMENTED THEREBY"
CN104635271A (en) * 2015-03-13 2015-05-20 陈蔼珊 Metal detecting method and metal detecting system based on mobile terminal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2642477A (en) * 1947-09-08 1953-06-16 Puranen Maunu Method for inductive prospecting
DK119350B (en) * 1966-04-15 1970-12-14 Nielsen & Son Maskinfab As H Sensing means for an electric control circuit for an electrically driven conveyor track.
US3686564A (en) * 1970-10-08 1972-08-22 Westinghouse Electric Corp Multiple frequency magnetic field technique for differentiating between classes of metal objects
GB1604973A (en) * 1978-05-31 1981-12-16 Walton J H D Apparatus for locating metal and/or ferromagnetic particles
US4334192A (en) * 1979-01-29 1982-06-08 Garrett Electronics Metal detector circuit having automatic tuning with multiple rates

Also Published As

Publication number Publication date
FR2547659A1 (en) 1984-12-21

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Legal Events

Date Code Title Description
ST Notification of lapse