FR2667952B1 - - Google Patents

Info

Publication number
FR2667952B1
FR2667952B1 FR9012929A FR9012929A FR2667952B1 FR 2667952 B1 FR2667952 B1 FR 2667952B1 FR 9012929 A FR9012929 A FR 9012929A FR 9012929 A FR9012929 A FR 9012929A FR 2667952 B1 FR2667952 B1 FR 2667952B1
Authority
FR
France
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 - Fee Related
Application number
FR9012929A
Other versions
FR2667952A1 (fr
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 filed Critical
Priority to FR9012929A priority Critical patent/FR2667952A1/fr
Publication of FR2667952A1 publication Critical patent/FR2667952A1/fr
Application granted granted Critical
Publication of FR2667952B1 publication Critical patent/FR2667952B1/fr
Granted 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
    • 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)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
FR9012929A 1990-10-15 1990-10-15 Dispositif pour la detection, l'identification et le suivi de canalisations enterrees ou autres objets optiquement invisibles. Granted FR2667952A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9012929A FR2667952A1 (fr) 1990-10-15 1990-10-15 Dispositif pour la detection, l'identification et le suivi de canalisations enterrees ou autres objets optiquement invisibles.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9012929A FR2667952A1 (fr) 1990-10-15 1990-10-15 Dispositif pour la detection, l'identification et le suivi de canalisations enterrees ou autres objets optiquement invisibles.

Publications (2)

Publication Number Publication Date
FR2667952A1 FR2667952A1 (fr) 1992-04-17
FR2667952B1 true FR2667952B1 (fr) 1993-02-26

Family

ID=9401377

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9012929A Granted FR2667952A1 (fr) 1990-10-15 1990-10-15 Dispositif pour la detection, l'identification et le suivi de canalisations enterrees ou autres objets optiquement invisibles.

Country Status (1)

Country Link
FR (1) FR2667952A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2786877B1 (fr) * 1998-12-04 2001-02-02 Nortene Technologies Grillage avertisseur, dispositif de detection electromagnetique et procede de mise en oeuvre
FR2786879B1 (fr) * 1998-12-04 2001-12-21 Nortene Technologies Dispositif de detection electromagnetique, procede et structure a enterrer
FR2786878B1 (fr) * 1998-12-04 2001-02-02 Nortene Technologies Grillage avertisseur, dispositif de detection electromagnetique et procede de mise en oeuvre

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR960966A (fr) * 1950-04-28
FR2049608A5 (fr) * 1969-06-13 1971-03-26 Electronic Sensing Produ
FR2419511A1 (fr) * 1978-03-10 1979-10-05 Trt Telecom Radio Electr Dispositif de detection de masses metalliques mobiles destine notamment a l'amorcage d'une mine anti-char
GB2089992A (en) * 1980-12-23 1982-06-30 White S Electronics Target Depth Reading Metal Detector
FR2531234B1 (fr) * 1982-08-02 1985-08-23 Nobel Plastiques Grillage avertisseur
EP0130940B2 (fr) * 1983-07-05 1993-12-01 C.A. Weidmüller GmbH & Co. Dispositif inductif sensoriel et dispositif de mesure pour son utilisation
FR2632422B1 (fr) * 1988-06-02 1990-09-07 Sappel Sa Procede et dispositif pour detecter la proximite d'un objet ferromagnetique

Also Published As

Publication number Publication date
FR2667952A1 (fr) 1992-04-17

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20080630