FR2619454B1 - Procedes et portiques ou sas pour detecter le passage de masses metalliques - Google Patents

Procedes et portiques ou sas pour detecter le passage de masses metalliques

Info

Publication number
FR2619454B1
FR2619454B1 FR8711661A FR8711661A FR2619454B1 FR 2619454 B1 FR2619454 B1 FR 2619454B1 FR 8711661 A FR8711661 A FR 8711661A FR 8711661 A FR8711661 A FR 8711661A FR 2619454 B1 FR2619454 B1 FR 2619454B1
Authority
FR
France
Prior art keywords
sas
gates
passage
detect
methods
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 - Fee Related
Application number
FR8711661A
Other languages
English (en)
Other versions
FR2619454A1 (fr
Inventor
Jackie Orange
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.)
AUTOMATISME TECH AVANCEES
Original Assignee
AUTOMATISME TECH AVANCEES
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 AUTOMATISME TECH AVANCEES filed Critical AUTOMATISME TECH AVANCEES
Priority to FR8711661A priority Critical patent/FR2619454B1/fr
Publication of FR2619454A1 publication Critical patent/FR2619454A1/fr
Application granted granted Critical
Publication of FR2619454B1 publication Critical patent/FR2619454B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V13/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups G01V1/00 – G01V11/00

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Remote Sensing (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Geophysics And Detection Of Objects (AREA)
FR8711661A 1987-08-14 1987-08-14 Procedes et portiques ou sas pour detecter le passage de masses metalliques Expired - Fee Related FR2619454B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8711661A FR2619454B1 (fr) 1987-08-14 1987-08-14 Procedes et portiques ou sas pour detecter le passage de masses metalliques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8711661A FR2619454B1 (fr) 1987-08-14 1987-08-14 Procedes et portiques ou sas pour detecter le passage de masses metalliques

Publications (2)

Publication Number Publication Date
FR2619454A1 FR2619454A1 (fr) 1989-02-17
FR2619454B1 true FR2619454B1 (fr) 1990-06-29

Family

ID=9354259

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8711661A Expired - Fee Related FR2619454B1 (fr) 1987-08-14 1987-08-14 Procedes et portiques ou sas pour detecter le passage de masses metalliques

Country Status (1)

Country Link
FR (1) FR2619454B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5070462A (en) * 1989-09-12 1991-12-03 Flowmole Corporation Device for locating a boring machine
EP0443069A1 (fr) * 1990-02-22 1991-08-28 Siemens Aktiengesellschaft Procédé pour mesurer la structure d'un champ électrique ou magnétique au moyen d'un ensemble de capteurs
DE19858714A1 (de) * 1998-12-18 2000-06-21 Ebinger Klaus Ing Fa Torsonde

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3397364A (en) * 1967-05-24 1968-08-13 Small Business Administ Inductive loop metallic object detector
SE396248B (sv) * 1972-08-29 1977-09-12 Weber Gunther Kopplingsanordning for omvandling av en fysikalisk storhet till en elektrisk signal
GB2087564B (en) * 1980-11-14 1984-06-13 Redland Automation Ltd Object detector
US4491841A (en) * 1981-04-03 1985-01-01 Sarasota Automation Limited Self-adjusting inductive object-presence detector
FR2552888B1 (fr) * 1983-09-30 1986-02-28 Electroniques Meca Et Dispositif electronique pour la detection d'objets au moins en partie metalliques, a l'interieur d'un volume determine

Also Published As

Publication number Publication date
FR2619454A1 (fr) 1989-02-17

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Legal Events

Date Code Title Description
ST Notification of lapse