FR2441226A1 - Procede et dispositif de detection d'intrusion - Google Patents

Procede et dispositif de detection d'intrusion

Info

Publication number
FR2441226A1
FR2441226A1 FR7927541A FR7927541A FR2441226A1 FR 2441226 A1 FR2441226 A1 FR 2441226A1 FR 7927541 A FR7927541 A FR 7927541A FR 7927541 A FR7927541 A FR 7927541A FR 2441226 A1 FR2441226 A1 FR 2441226A1
Authority
FR
France
Prior art keywords
detection method
intrusion detection
ultrasonic
transducer
absence
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.)
Withdrawn
Application number
FR7927541A
Other languages
English (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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of FR2441226A1 publication Critical patent/FR2441226A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1609—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems
    • G08B13/1618—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means
    • G08B13/1636—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means using pulse-type detection circuits

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

L'INVENTION CONCERNE LES DETECTEURS D'INTRUSION. UN DISPOSITIF 16 QUI EST DESTINE A DETECTER LA PRESENCE D'UN CORPS 33 DANS UNE PIECE 10 COMPREND UN TRANSDUCTEUR ULTRASONORE D'EMISSION 22, UN TRANSDUCTEUR DE RECEPTION 30, ET DES CIRCUITS ASSOCIES. LE DISPOSITIF ENREGISTRE PREALABLEMENT LE TEMPS DE TRANSIT D'UNE IMPULSION ULTRASONORE REFLECHIE PAR LA PAROI 24, EN L'ABSENCE DU CORPS 33, PUIS IL DETECTE TOUTE VARIATION DE CE TEMPS SOUS L'EFFET DE LA PRESENCE DU CORPS 33. APPLICATION AUX SYSTEMES D'ALARME CONTRE LE VOL.
FR7927541A 1978-11-09 1979-11-08 Procede et dispositif de detection d'intrusion Withdrawn FR2441226A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/959,236 US4242743A (en) 1978-11-09 1978-11-09 Intrusion detection method and apparatus

Publications (1)

Publication Number Publication Date
FR2441226A1 true FR2441226A1 (fr) 1980-06-06

Family

ID=25501811

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7927541A Withdrawn FR2441226A1 (fr) 1978-11-09 1979-11-08 Procede et dispositif de detection d'intrusion

Country Status (10)

Country Link
US (1) US4242743A (fr)
JP (1) JPS5589768A (fr)
AU (1) AU5193479A (fr)
BE (1) BE879879A (fr)
BR (1) BR7907302A (fr)
CA (1) CA1130908A (fr)
DE (1) DE2945183A1 (fr)
FR (1) FR2441226A1 (fr)
GB (1) GB2034949A (fr)
NL (1) NL7908225A (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4347590A (en) * 1980-03-03 1982-08-31 Heger Vernon G Area surveillance system
FR2508210A1 (fr) * 1981-06-22 1982-12-24 Alsthom Cgee Detecteur d'intrusion a ultrasons
DE3138964A1 (de) * 1981-09-30 1983-04-14 Siemens AG, 1000 Berlin und 8000 München Verfahren zur unterdrueckung von stoerungen bei dem phasenvergleich zweier wechselspannungssignale, insbesondere bei dem phasenvergleich in ultraschall-echosignal-phasendetektoranordnungen fuer raumueberwachungsgeraete
JPS59198375A (ja) * 1983-04-27 1984-11-10 Keisuke Honda 盗難防止装置
JPH0644040B2 (ja) * 1984-11-14 1994-06-08 松下電工株式会社 超音波式防犯装置
US4639902A (en) * 1985-06-24 1987-01-27 The United States Of America As Represented By The Secretary Of The Navy Near ultrasonic pattern comparison intrusion detector
JPH0321501Y2 (fr) * 1985-09-06 1991-05-10
US4929925A (en) * 1988-02-24 1990-05-29 Bodine David B Alarm system
GB2217013B (en) * 1988-04-07 1992-10-21 Kodak Ltd Control of light emission from devices such as cathode ray tubes
US4903009A (en) * 1988-05-18 1990-02-20 Eastman Kodak Company Intrusion detection device
AU751059B2 (en) * 1998-05-11 2002-08-08 Robert Bosch Gmbh Ultrasonic monitoring and intruder detection
US7469595B2 (en) * 2004-03-03 2008-12-30 Metis Design Corporation Piezoelectric damage detection device
US7019683B2 (en) * 2004-03-05 2006-03-28 General Electric Company Shipping container security system
WO2006041513A1 (fr) * 2004-10-07 2006-04-20 Metis Design Corporation Infrastructure de capteur
US7533578B2 (en) * 2006-04-18 2009-05-19 Metis Design Corporation Triangulation with co-located sensors
US7710824B1 (en) * 2007-09-18 2010-05-04 Sprint Communications Company L.P. Location monitoring and sonar determination of presence
US7925606B1 (en) 2007-09-18 2011-04-12 Sprint Communications Company L.P. Monitoring physical locations using rules and events processing
RU2464642C2 (ru) * 2011-01-11 2012-10-20 Сергей Юрьевич Моссаковский Способ дистанционного контроля объектов без возможности доступа к ним и устройство для его реализации
US10641013B2 (en) 2016-02-16 2020-05-05 Go Lock Technology, Inc. Portable lock with integrity sensors
US10778285B2 (en) 2017-01-04 2020-09-15 Go Lock Technology, Inc. Cable with integral sensing elements for fault detection
US10544605B2 (en) 2017-05-19 2020-01-28 Douglas A. Yates Sliding lockable housing with supplemental openings

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE669869A (fr) * 1959-04-24 1966-01-17
BE669870A (fr) * 1959-06-16 1966-01-17
DE1218194B (de) * 1961-08-22 1966-06-02 Electroacustic Gmbh Verfahren und Vorrichtung zur Fahrzeug-Verkehrskontrolle
US3255434A (en) * 1961-11-01 1966-06-07 Peter D Schwarz Vehicle detection and counting system
US3431549A (en) * 1966-06-21 1969-03-04 Marconi Co Ltd Ultrasonic presence detectors
US3622957A (en) * 1970-01-26 1971-11-23 Westinghouse Electric Corp Ultrasonic object detector
US3781772A (en) * 1972-02-25 1973-12-25 Matsushita Electric Works Ltd Ultrasonic detection apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6911200A (fr) * 1968-08-03 1970-02-05
US3686658A (en) * 1970-05-12 1972-08-22 Teledyne Geotech Intrusion detector responsive to change in dominant frequency
NO130132B (fr) * 1970-06-13 1974-07-08 Electroacustic Gmbh
US3713126A (en) * 1971-02-18 1973-01-23 Novar Electronics Corp Burglar deterrent timing switch
JPS50142057A (fr) * 1974-05-01 1975-11-15

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE669869A (fr) * 1959-04-24 1966-01-17
BE669870A (fr) * 1959-06-16 1966-01-17
DE1218194B (de) * 1961-08-22 1966-06-02 Electroacustic Gmbh Verfahren und Vorrichtung zur Fahrzeug-Verkehrskontrolle
US3255434A (en) * 1961-11-01 1966-06-07 Peter D Schwarz Vehicle detection and counting system
US3431549A (en) * 1966-06-21 1969-03-04 Marconi Co Ltd Ultrasonic presence detectors
US3622957A (en) * 1970-01-26 1971-11-23 Westinghouse Electric Corp Ultrasonic object detector
US3781772A (en) * 1972-02-25 1973-12-25 Matsushita Electric Works Ltd Ultrasonic detection apparatus

Also Published As

Publication number Publication date
AU5193479A (en) 1980-05-15
DE2945183A1 (de) 1980-05-29
NL7908225A (nl) 1980-05-13
JPS5589768A (en) 1980-07-07
US4242743A (en) 1980-12-30
GB2034949A (en) 1980-06-11
BR7907302A (pt) 1980-07-22
CA1130908A (fr) 1982-08-31
BE879879A (fr) 1980-03-03

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Legal Events

Date Code Title Description
ST Notification of lapse