FR2299652B1 - - Google Patents

Info

Publication number
FR2299652B1
FR2299652B1 FR7502488A FR7502488A FR2299652B1 FR 2299652 B1 FR2299652 B1 FR 2299652B1 FR 7502488 A FR7502488 A FR 7502488A FR 7502488 A FR7502488 A FR 7502488A FR 2299652 B1 FR2299652 B1 FR 2299652B1
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
Application number
FR7502488A
Other languages
French (fr)
Other versions
FR2299652A1 (fr
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 FR7502488A priority Critical patent/FR2299652A1/fr
Publication of FR2299652A1 publication Critical patent/FR2299652A1/fr
Application granted granted Critical
Publication of FR2299652B1 publication Critical patent/FR2299652B1/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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/95—Proximity switches using a magnetic detector
    • H03K17/952—Proximity switches using a magnetic detector using inductive coils
    • H03K17/9525—Proximity switches using a magnetic detector using inductive coils controlled by an oscillatory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • H04B5/266—One coil at each side, e.g. with primary and secondary coils

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Near-Field Transmission Systems (AREA)
  • Electronic Switches (AREA)
FR7502488A 1975-01-28 1975-01-28 Detecteur de proximite inductif de securite Granted FR2299652A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7502488A FR2299652A1 (fr) 1975-01-28 1975-01-28 Detecteur de proximite inductif de securite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7502488A FR2299652A1 (fr) 1975-01-28 1975-01-28 Detecteur de proximite inductif de securite

Publications (2)

Publication Number Publication Date
FR2299652A1 FR2299652A1 (fr) 1976-08-27
FR2299652B1 true FR2299652B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1978-02-03

Family

ID=9150365

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7502488A Granted FR2299652A1 (fr) 1975-01-28 1975-01-28 Detecteur de proximite inductif de securite

Country Status (1)

Country Link
FR (1) FR2299652A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH661994A5 (de) * 1983-02-21 1987-08-31 Jaeger Walter Verfahren zur uebertragung von informationen und befehlen von einer bodenstelle auf ein schienenfahrzeug.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970211A (en) * 1958-04-01 1961-01-31 Stin Train-end signalling device
FR1584142A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1968-08-13 1969-12-12

Also Published As

Publication number Publication date
FR2299652A1 (fr) 1976-08-27

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse