NL7904903A - Identificatiestelsel. - Google Patents

Identificatiestelsel. Download PDF

Info

Publication number
NL7904903A
NL7904903A NL7904903A NL7904903A NL7904903A NL 7904903 A NL7904903 A NL 7904903A NL 7904903 A NL7904903 A NL 7904903A NL 7904903 A NL7904903 A NL 7904903A NL 7904903 A NL7904903 A NL 7904903A
Authority
NL
Netherlands
Prior art keywords
circuit
identification system
measuring coil
coils
resonant
Prior art date
Application number
NL7904903A
Other languages
English (en)
Dutch (nl)
Original Assignee
Applied Electronics Bv
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 Applied Electronics Bv filed Critical Applied Electronics Bv
Priority to NL7904903A priority Critical patent/NL7904903A/nl
Priority to DE19803023446 priority patent/DE3023446A1/de
Publication of NL7904903A publication Critical patent/NL7904903A/nl

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
    • G01V3/107—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 using compensating coil or loop arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Near-Field Transmission Systems (AREA)
NL7904903A 1979-06-22 1979-06-22 Identificatiestelsel. NL7904903A (nl)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL7904903A NL7904903A (nl) 1979-06-22 1979-06-22 Identificatiestelsel.
DE19803023446 DE3023446A1 (de) 1979-06-22 1980-06-23 Identifiziersystem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7904903A NL7904903A (nl) 1979-06-22 1979-06-22 Identificatiestelsel.
NL7904903 1979-06-22

Publications (1)

Publication Number Publication Date
NL7904903A true NL7904903A (nl) 1980-12-24

Family

ID=19833406

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7904903A NL7904903A (nl) 1979-06-22 1979-06-22 Identificatiestelsel.

Country Status (2)

Country Link
DE (1) DE3023446A1 (enrdf_load_stackoverflow)
NL (1) NL7904903A (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU84209A1 (fr) * 1982-06-17 1984-03-07 Cen Centre Energie Nucleaire Installation pour determiner la position d'un corps metallique dans un milieu peu conducteur de l'electricite
DE3345829A1 (de) * 1983-12-19 1985-06-27 Központi Bányászati Fejlesztési Intézet, Budapest Kontrollsystem, insbesondere zur personenregistration im bergbau
DE3490695C2 (de) * 1984-04-23 1986-09-18 Arthur D. Little, Inc., Cambridge, Mass. Elektronisch detektierbarer und deaktivierbarer Kennungsschaltkreis zur Verwendung in einem elektronischen Sicherheitssystem
DE4338554A1 (de) * 1992-11-14 1994-05-19 Krone Ag Verfahren und Schaltungsanordnung zur elektronischen Kennzeichnung von Gegenständen
EP4016138A1 (de) 2020-12-16 2022-06-22 Cassel Meßtechnik GmbH Vorrichtung zur detektion von metallischen objekten in und an sich gegenüber der vorrichtung bewegenden gegenständen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2693525A (en) * 1951-01-17 1954-11-02 Gen Railway Signal Co Inductive control system

Also Published As

Publication number Publication date
DE3023446C2 (enrdf_load_stackoverflow) 1988-08-11
DE3023446A1 (de) 1981-01-15

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Legal Events

Date Code Title Description
A1B A search report has been drawn up
A85 Still pending on 85-01-01
BC A request for examination has been filed
BV The patent application has lapsed