FR2176499B1 - - Google Patents

Info

Publication number
FR2176499B1
FR2176499B1 FR7209800A FR7209800A FR2176499B1 FR 2176499 B1 FR2176499 B1 FR 2176499B1 FR 7209800 A FR7209800 A FR 7209800A FR 7209800 A FR7209800 A FR 7209800A FR 2176499 B1 FR2176499 B1 FR 2176499B1
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
FR7209800A
Other languages
French (fr)
Other versions
FR2176499A1 (de
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.)
SALMET GASTON FR
Original Assignee
SALMET GASTON FR
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 SALMET GASTON FR filed Critical SALMET GASTON FR
Priority to FR7209800A priority Critical patent/FR2176499B1/fr
Priority to GB1151673A priority patent/GB1378280A/en
Priority to DE2312484A priority patent/DE2312484A1/de
Priority to US00341744A priority patent/US3828335A/en
Publication of FR2176499A1 publication Critical patent/FR2176499A1/fr
Application granted granted Critical
Publication of FR2176499B1 publication Critical patent/FR2176499B1/fr
Expired 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
    • G01V3/101—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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Burglar Alarm Systems (AREA)
  • Transmitters (AREA)
FR7209800A 1972-03-21 1972-03-21 Expired FR2176499B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7209800A FR2176499B1 (de) 1972-03-21 1972-03-21
GB1151673A GB1378280A (en) 1972-03-21 1973-03-09 Radio detector for detecting the movement of people or objects in a confined space
DE2312484A DE2312484A1 (de) 1972-03-21 1973-03-13 Funkvorrichtung zum abtasten der bewegung von personen oder gegenstaenden in einem begrenzten raum
US00341744A US3828335A (en) 1972-03-21 1973-03-15 Radio-wave detector for discovering the movement of persons or objects in a confined space

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7209800A FR2176499B1 (de) 1972-03-21 1972-03-21

Publications (2)

Publication Number Publication Date
FR2176499A1 FR2176499A1 (de) 1973-11-02
FR2176499B1 true FR2176499B1 (de) 1975-03-21

Family

ID=9095554

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7209800A Expired FR2176499B1 (de) 1972-03-21 1972-03-21

Country Status (4)

Country Link
US (1) US3828335A (de)
DE (1) DE2312484A1 (de)
FR (1) FR2176499B1 (de)
GB (1) GB1378280A (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1093655A (en) * 1977-01-19 1981-01-13 Martin T. Cole Intrusion or movement detector
US4325058A (en) * 1980-06-11 1982-04-13 Gentex Corporation Pre-intrusion detection and alarm system
US4380721A (en) * 1980-12-29 1983-04-19 Bullock John W Proximity switch
JPS60111983A (ja) * 1983-11-22 1985-06-18 Honda Motor Co Ltd 物体検知装置
MY122034A (en) * 1996-09-27 2006-03-31 Inventio Ag Identification system for an elevator installation
JP3409752B2 (ja) * 1999-10-26 2003-05-26 トヨタ自動車株式会社 移動物体検知装置、異常警報装置および積載室開放制御装置
GB2455540A (en) * 2007-12-13 2009-06-17 Philip Hodgetts Proximity sensing system to control electricity supply
KR20100130215A (ko) * 2008-03-17 2010-12-10 파우워매트 엘티디. 유도송전장치
US8981598B2 (en) 2008-07-02 2015-03-17 Powermat Technologies Ltd. Energy efficient inductive power transmission system and method
US11979201B2 (en) 2008-07-02 2024-05-07 Powermat Technologies Ltd. System and method for coded communication signals regulating inductive power transmissions
ES2534702B1 (es) * 2013-09-24 2016-02-09 Ontech Security, Sl Sensor de campos electrostáticos y sistema de seguridad en espacios interiores
US10511347B2 (en) * 2017-11-14 2019-12-17 Nxp B.V. Device detection in contactless communication systems

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2152296A (en) * 1936-09-21 1939-03-28 Talking Advertising Corp Advertising device
DE970232C (de) * 1937-05-01 1958-08-28 Emi Ltd Anordnung zur Ankopplung einer Hochfrequenzquelle an einen Verbraucher
US3005191A (en) * 1957-07-10 1961-10-17 Mosler Res Products Inc Security alarm system
US2992420A (en) * 1957-11-08 1961-07-11 Holmes Electric Protective Com Capacity type burglar alarm systems
US3324647A (en) * 1964-08-11 1967-06-13 Parmet Company Proximity detector
DE1566723A1 (de) * 1967-04-13 1970-08-06 Johannes Rode Raumueberwachungsanlage
US3573783A (en) * 1967-09-13 1971-04-06 R F Controls Inc Proximity sensor
US3495353A (en) * 1968-09-23 1970-02-17 Stanley Works Door operating mechanism

Also Published As

Publication number Publication date
GB1378280A (en) 1974-12-27
US3828335A (en) 1974-08-06
DE2312484A1 (de) 1973-10-04
FR2176499A1 (de) 1973-11-02

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Legal Events

Date Code Title Description
ST Notification of lapse