NL7904903A - Identificatiestelsel. - Google Patents
Identificatiestelsel. Download PDFInfo
- 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
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)
- Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geophysics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Geophysics And Detection Of Objects (AREA)
- Near-Field Transmission Systems (AREA)
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 (de) |
NL (1) | NL7904903A (de) |
Families Citing this family (5)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2693525A (en) * | 1951-01-17 | 1954-11-02 | Gen Railway Signal Co | Inductive control system |
-
1979
- 1979-06-22 NL NL7904903A patent/NL7904903A/nl not_active Application Discontinuation
-
1980
- 1980-06-23 DE DE19803023446 patent/DE3023446A1/de active Granted
Also Published As
Publication number | Publication date |
---|---|
DE3023446A1 (de) | 1981-01-15 |
DE3023446C2 (de) | 1988-08-11 |
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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 |