FR1398878A - Proximity sensor applicable in particular to the detection of metallic masses - Google Patents

Proximity sensor applicable in particular to the detection of metallic masses

Info

Publication number
FR1398878A
FR1398878A FR969449A FR969449A FR1398878A FR 1398878 A FR1398878 A FR 1398878A FR 969449 A FR969449 A FR 969449A FR 969449 A FR969449 A FR 969449A FR 1398878 A FR1398878 A FR 1398878A
Authority
FR
France
Prior art keywords
detection
proximity sensor
sensor applicable
metallic masses
masses
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
Application number
FR969449A
Other languages
French (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.)
Compagnie des Freins et Signaux Westinghouse SA
Original Assignee
Compagnie des Freins et Signaux Westinghouse SA
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 Compagnie des Freins et Signaux Westinghouse SA filed Critical Compagnie des Freins et Signaux Westinghouse SA
Priority to FR969449A priority Critical patent/FR1398878A/en
Priority to BE661481D priority patent/BE661481A/xx
Priority to DE19651473751 priority patent/DE1473751A1/en
Application granted granted Critical
Publication of FR1398878A publication Critical patent/FR1398878A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03K17/9537—Proximity switches using a magnetic detector using inductive coils in a resonant circuit
    • H03K17/9542—Proximity switches using a magnetic detector using inductive coils in a resonant circuit forming part of an oscillator
    • H03K17/9547—Proximity switches using a magnetic detector using inductive coils in a resonant circuit forming part of an oscillator with variable amplitude
    • 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
    • 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
    • G01V3/102—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 by measuring amplitude
FR969449A 1964-04-02 1964-04-02 Proximity sensor applicable in particular to the detection of metallic masses Expired FR1398878A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR969449A FR1398878A (en) 1964-04-02 1964-04-02 Proximity sensor applicable in particular to the detection of metallic masses
BE661481D BE661481A (en) 1964-04-02 1965-03-22
DE19651473751 DE1473751A1 (en) 1964-04-02 1965-03-27 Close-up search device, in particular for detecting metallic masses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR969449A FR1398878A (en) 1964-04-02 1964-04-02 Proximity sensor applicable in particular to the detection of metallic masses

Publications (1)

Publication Number Publication Date
FR1398878A true FR1398878A (en) 1965-05-14

Family

ID=8826847

Family Applications (1)

Application Number Title Priority Date Filing Date
FR969449A Expired FR1398878A (en) 1964-04-02 1964-04-02 Proximity sensor applicable in particular to the detection of metallic masses

Country Status (3)

Country Link
BE (1) BE661481A (en)
DE (1) DE1473751A1 (en)
FR (1) FR1398878A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2287029A1 (en) * 1974-10-02 1976-04-30 Dumesnil Gerard Detector for ferromagnetic objects - has coil movable in magnetic field in circuit rejecting mains interference
EP0086226A1 (en) * 1981-08-21 1983-08-24 Mars Inc Coin presence sensing apparatus.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010035072A1 (en) * 2010-08-21 2012-02-23 Abb Ag Magnetic system and installation switching device with a magnet system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2287029A1 (en) * 1974-10-02 1976-04-30 Dumesnil Gerard Detector for ferromagnetic objects - has coil movable in magnetic field in circuit rejecting mains interference
EP0086226A1 (en) * 1981-08-21 1983-08-24 Mars Inc Coin presence sensing apparatus.
EP0086226A4 (en) * 1981-08-21 1985-12-11 Mars Inc Coin presence sensing apparatus.

Also Published As

Publication number Publication date
BE661481A (en) 1965-07-16
DE1473751A1 (en) 1969-04-24

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