SE7514372L - Anordning for omradesbevakning medelst hogfrekvens - Google Patents

Anordning for omradesbevakning medelst hogfrekvens

Info

Publication number
SE7514372L
SE7514372L SE7514372A SE7514372A SE7514372L SE 7514372 L SE7514372 L SE 7514372L SE 7514372 A SE7514372 A SE 7514372A SE 7514372 A SE7514372 A SE 7514372A SE 7514372 L SE7514372 L SE 7514372L
Authority
SE
Sweden
Prior art keywords
area
measuring frequency
monitoring
security system
received
Prior art date
Application number
SE7514372A
Other languages
Unknown language ( )
English (en)
Other versions
SE407987B (sv
Inventor
A T Torlesse
A W Bovill
R C West
Original Assignee
Plessey Handel Investment Ag
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 Plessey Handel Investment Ag filed Critical Plessey Handel Investment Ag
Publication of SE7514372L publication Critical patent/SE7514372L/sv
Publication of SE407987B publication Critical patent/SE407987B/sv

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field
    • G08B13/2497—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field using transmission lines, e.g. cable

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Emergency Alarm Devices (AREA)
  • Radar Systems Or Details Thereof (AREA)
SE7514372A 1974-12-31 1975-12-18 Sekerhetsanordning for bevakning av ett omrade SE407987B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB56093/74A GB1497867A (en) 1974-12-31 1974-12-31 Security system for surveying an area

Publications (2)

Publication Number Publication Date
SE7514372L true SE7514372L (sv) 1976-07-01
SE407987B SE407987B (sv) 1979-04-30

Family

ID=10475709

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7514372A SE407987B (sv) 1974-12-31 1975-12-18 Sekerhetsanordning for bevakning av ett omrade

Country Status (9)

Country Link
US (1) US4053877A (sv)
AU (1) AU496739B2 (sv)
CA (1) CA1050133A (sv)
DE (1) DE2559060A1 (sv)
FR (1) FR2296891A1 (sv)
GB (1) GB1497867A (sv)
IE (1) IE41988B1 (sv)
SE (1) SE407987B (sv)
ZA (1) ZA757823B (sv)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0045335A1 (en) * 1980-08-05 1982-02-10 Stellar Systems, Inc. E field balanced phase intrusion alarm
IL62589A (en) * 1981-04-05 1988-02-29 Israel Aircraft Ind Ltd Electromagnetic field perimeter detection apparatus
US4415885A (en) * 1981-05-21 1983-11-15 Stellar Systems, Inc. Intrusion detector
US4571578A (en) * 1983-04-19 1986-02-18 The United States Of America As Represented By The Secretary Of The Air Force Intrusion barrier and detection apparatus
GB2145550A (en) * 1983-07-28 1985-03-27 Dr Maurice Bloch Remote monitoring radio link
CA1250634A (en) * 1984-11-19 1989-02-28 Melvin C. Maki Simulated targets for detection systems
IT1218109B (it) * 1986-05-02 1990-04-12 Dei Dispositivi Elettronici In Apparecchiatura per il rilevamento di corpi in movimento sul terreno in un'area protetta,in particolare per usi militari e affini
GB2226636B (en) * 1988-12-05 1993-01-27 Plessey Co Plc Apparatus for sensing the movement of a local magnetic object.
US5430537A (en) * 1993-09-03 1995-07-04 Dynamics Research Corporation Light beam distance encoder
US6204772B1 (en) 1999-12-16 2001-03-20 Caterpillar Inc. Method and apparatus for monitoring the position of a machine
CA2467783A1 (en) * 2001-11-20 2003-05-30 Nicholas D. Hutchins Facilities management system
JP2008263302A (ja) * 2007-04-10 2008-10-30 Mitsubishi Electric Corp 侵入検知システム
WO2015172209A1 (pt) * 2014-05-15 2015-11-19 Tarcisio Caddah Melo Sistema e método de proteção de áreas de acesso restrito contra intrusões de pedestres e/ou veículos em geral sem cabine, com acesso permitido a viaturas de cabine, incluindo veículos conversíveis com a capota fechada
CN106285191B (zh) * 2015-06-26 2018-09-07 奇点新源国际技术开发(北京)有限公司 周界安全防护网及周界安全防护方法
CN106297122B (zh) * 2015-06-26 2019-05-03 奇点新源国际技术开发(北京)有限公司 安全防护墙及探测器
CN106327755B (zh) * 2015-06-26 2019-03-29 奇点新源国际技术开发(北京)有限公司 安防线缆
CN105303742B (zh) * 2015-08-03 2016-10-05 山东德昶安防科技有限公司 一种电子围栏及实现方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971184A (en) * 1957-05-14 1961-02-07 American District Telegraph Co Intruder alarm system
US3043952A (en) * 1958-09-08 1962-07-10 Gen Motors Corp Automatic car guidance system
US3031643A (en) * 1960-05-16 1962-04-24 Nat Company Inc Transmission line fence burglar alarm
GB892872A (en) * 1960-09-12 1962-04-04 American District Telegraph Co Intruder alarm systems
US3230518A (en) * 1961-03-20 1966-01-18 American District Telegraph Co Method of detecting intruders and intruder detection apparatus of the capacity-type utilizing balanced asymmetric fields
US3237105A (en) * 1962-05-09 1966-02-22 Henry P Kalmus Personnel intrusion detecting device
US3668625A (en) * 1970-09-21 1972-06-06 David Wolf Monitoring system
US3641569A (en) * 1970-10-01 1972-02-08 Raytheon Co Highway vehicle sensor system
US3750125A (en) * 1971-10-20 1973-07-31 Sperry Rand Corp Transmission line presence sensor
US3801976A (en) * 1971-12-06 1974-04-02 Sperry Rand Corp Transmission line presence sensor

Also Published As

Publication number Publication date
FR2296891B1 (sv) 1981-08-21
AU496739B2 (en) 1978-10-26
IE41988L (en) 1976-06-30
ZA757823B (en) 1976-11-24
CA1050133A (en) 1979-03-06
GB1497867A (en) 1978-01-12
AU8789575A (en) 1977-06-30
IE41988B1 (en) 1980-05-07
DE2559060A1 (de) 1976-07-08
FR2296891A1 (fr) 1976-07-30
US4053877A (en) 1977-10-11
SE407987B (sv) 1979-04-30

Similar Documents

Publication Publication Date Title
SE7514372L (sv) Anordning for omradesbevakning medelst hogfrekvens
IT1058062B (it) Sistema di allarme per vicinanza al terreno con misure di blocco per cabrata e con misure di aumento di quote
US5049858A (en) Intrusion detection system
AU465571B2 (en) Intrusion detection system
SE7712385L (sv) Brandalarmanleggning
TR18071A (tr) Entruesiyon tespit sistemi
BE799507A (fr) Systeme d'interrogation d'appareils de mesure,
NL7505563A (nl) Kommunikatiestelsel en -inrichting met p.c.m.-gecodeerde signalen.
SE389569B (sv) Forfarande och anordning for brandlarmgivning
IT1066246B (it) Dispositivo di compressione di banda e sistema radar comportante un tale dispositivo
BR7302551D0 (pt) Aparelho de deteccao de sinais
SE391985B (sv) Radaranordning innefattande skilda sendar- och mottagningsantenner
CA1007323A (en) Intrusion detecting alarm system
AU5427573A (en) Intrusion detection system
IT990203B (it) Apparecchio di rivelazione di incendio
CH522259A (fr) Dispositif de surveillance électronique
FR1517523A (fr) Système détecteur de la présence d'un véhicule
IT1021314B (it) Procedimento ed impianto per gene rare un segnale di allarme quando su un binario ferroviario sorge il pericolo di formazioni di gi ghiaccio
FR1512433A (fr) Système de mesure digitale d'azimut
SE403829B (sv) Markvarnande anordning for flygfarkoster
GB959140A (en) Improvements in or relating to arrangements for detecting objects
FR952950A (fr) Système de sécurité combiné par alerte à distance et action locale
LEE Intruder detection system(Development of electronic detection system for remotely determining number and movement of enemy personnel)[Patent]
ES176858A1 (es) Un sistema de seguridad con avisador eléctrico de alarma
NL7514250A (nl) Draagbare alarminrichting met sirene.

Legal Events

Date Code Title Description
NUG Patent has lapsed

Ref document number: 7514372-7

Effective date: 19920704

Format of ref document f/p: F