FR2299652A1 - Inductive proximity detector used in security applications - has high frequency transmitter, receiver and data logic system - Google Patents

Inductive proximity detector used in security applications - has high frequency transmitter, receiver and data logic system

Info

Publication number
FR2299652A1
FR2299652A1 FR7502488A FR7502488A FR2299652A1 FR 2299652 A1 FR2299652 A1 FR 2299652A1 FR 7502488 A FR7502488 A FR 7502488A FR 7502488 A FR7502488 A FR 7502488A FR 2299652 A1 FR2299652 A1 FR 2299652A1
Authority
FR
France
Prior art keywords
receiver
high frequency
transmitter
proximity detector
security applications
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.)
Granted
Application number
FR7502488A
Other languages
French (fr)
Other versions
FR2299652B1 (en
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/en
Publication of FR2299652A1 publication Critical patent/FR2299652A1/en
Application granted granted Critical
Publication of FR2299652B1 publication Critical patent/FR2299652B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive loop type
    • 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

Abstract

Inductive proximity detector for security applications comprises a transmitter (1) which provides a high frequency electromagnetic field (cut-off at low frequencies) a receiver (2) which detects (8), amplifies (9) and demodulates (10) the signal from the transmitter (1) and produces at its output an alternating voltage at the cut-off frequency and a system (3) which receives the data which only affects the logic state "1" if it receives the alternating voltage. The transmitter (1) plays the part of the object to be detected and its presence near the receiver (2) is translated into logic state "1" of the data receiving system (3). The transmitter (1) and receiver (2) are mounted on the same support.
FR7502488A 1975-01-28 1975-01-28 Inductive proximity detector used in security applications - has high frequency transmitter, receiver and data logic system Granted FR2299652A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7502488A FR2299652A1 (en) 1975-01-28 1975-01-28 Inductive proximity detector used in security applications - has high frequency transmitter, receiver and data logic system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7502488A FR2299652A1 (en) 1975-01-28 1975-01-28 Inductive proximity detector used in security applications - has high frequency transmitter, receiver and data logic system

Publications (2)

Publication Number Publication Date
FR2299652A1 true FR2299652A1 (en) 1976-08-27
FR2299652B1 FR2299652B1 (en) 1978-02-03

Family

ID=9150365

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7502488A Granted FR2299652A1 (en) 1975-01-28 1975-01-28 Inductive proximity detector used in security applications - has high frequency transmitter, receiver and data logic system

Country Status (1)

Country Link
FR (1) FR2299652A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2541214A1 (en) * 1983-02-21 1984-08-24 Jaeger Walter METHOD FOR TRANSMITTING INFORMATION AND / OR ORDERS

Citations (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 (en) * 1968-08-13 1969-12-12

Patent Citations (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 (en) * 1968-08-13 1969-12-12

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2541214A1 (en) * 1983-02-21 1984-08-24 Jaeger Walter METHOD FOR TRANSMITTING INFORMATION AND / OR ORDERS
WO1984003264A1 (en) * 1983-02-21 1984-08-30 Walter Jaeger Method for the transmission of informations and/or instructions
GB2146508A (en) * 1983-02-21 1985-04-17 Walter Jaeger Method for the transmission of informations and/or instructions
AT393657B (en) * 1983-02-21 1991-11-25 Adcount Ltd METHOD FOR TRANSMITTING INFORMATION AND / OR COMMANDS

Also Published As

Publication number Publication date
FR2299652B1 (en) 1978-02-03

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Legal Events

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