GB1435370A - Perimeter intrusion detection system - Google Patents

Perimeter intrusion detection system

Info

Publication number
GB1435370A
GB1435370A GB4542673A GB4542673A GB1435370A GB 1435370 A GB1435370 A GB 1435370A GB 4542673 A GB4542673 A GB 4542673A GB 4542673 A GB4542673 A GB 4542673A GB 1435370 A GB1435370 A GB 1435370A
Authority
GB
United Kingdom
Prior art keywords
circuit
earth
division
magnetic field
detection system
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
GB4542673A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1435370A publication Critical patent/GB1435370A/en
Expired 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
    • G08B13/22—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)
  • Geophysics And Detection Of Objects (AREA)
  • Burglar Alarm Systems (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
GB4542673A 1972-10-10 1973-09-28 Perimeter intrusion detection system Expired GB1435370A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00296376A US3812484A (en) 1972-10-10 1972-10-10 Perimeter intrusion detection system

Publications (1)

Publication Number Publication Date
GB1435370A true GB1435370A (en) 1976-05-12

Family

ID=23141746

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4542673A Expired GB1435370A (en) 1972-10-10 1973-09-28 Perimeter intrusion detection system

Country Status (12)

Country Link
US (1) US3812484A (zh)
JP (1) JPS4973000A (zh)
BE (1) BE805810A (zh)
BR (1) BR7307791D0 (zh)
DE (1) DE2350067A1 (zh)
ES (1) ES419479A1 (zh)
FR (1) FR2202330B1 (zh)
GB (1) GB1435370A (zh)
IT (1) IT997407B (zh)
NL (1) NL7313839A (zh)
SE (1) SE385163B (zh)
TR (1) TR18180A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007032707A1 (fr) * 2005-09-12 2007-03-22 Fond 'innovatsionny Tsentr Ibrae Ran' Procede de detection d'objets mobiles conducteurs d'electricite

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889181A (en) * 1974-03-08 1975-06-10 Us Army Magnetic system for discriminating between vehicles and personnel based upon their characteristic frequency signatures
US4326198A (en) * 1976-08-18 1982-04-20 Knogo Corporation Method and apparatus for the promotion of selected harmonic response signals in an article detection system
US4286261A (en) * 1978-09-01 1981-08-25 The United States Of America As Represented By The Secretary Of The Army Apparatus for discriminating between strain and magnetic stimuli in magnetic cored solenoid type transducer line sensors
DE3274622D1 (en) * 1981-12-03 1987-01-22 George Seymour Gray Line fault detector
US4866417A (en) * 1987-04-24 1989-09-12 Specific Cruise Systems, Inc. Automobile intruder alarm system
US5079538A (en) * 1987-04-24 1992-01-07 Specific Cruise Systems, Inc. Automobile intruder alarm system
US5402106A (en) * 1993-05-06 1995-03-28 Anthony M. DiPaolo Shopping cart theft prevention system
US6204772B1 (en) 1999-12-16 2001-03-20 Caterpillar Inc. Method and apparatus for monitoring the position of a machine
US20060068754A1 (en) * 2004-09-30 2006-03-30 Helena Goldfarb System and method for securing a large infrastructure
US7298260B1 (en) 2005-03-09 2007-11-20 Cossette Harold J Tesla coil security system
US20120207261A1 (en) * 2011-02-08 2012-08-16 Noel James L Nuclear Power Facility
GB201118970D0 (en) * 2011-11-02 2011-12-14 Univ Sussex Target position,movement and tracking system
CN118051830B (zh) * 2024-04-16 2024-06-25 齐鲁工业大学(山东省科学院) 一种周界安防入侵事件识别方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3355707A (en) * 1964-05-11 1967-11-28 Bunker Ramo Apparatus for vehicle detection
US3249915A (en) * 1965-04-20 1966-05-03 Trw Inc Method and apparatus for vehicle detection
FR1478357A (fr) * 1965-09-14 1967-04-28 Wiener Schwachstromwerke Gmbh Installation pour la mesure et la détection de champs magnétiques ou de modifications de champs magnétiques
US3458802A (en) * 1966-05-02 1969-07-29 Bunker Ramo Magnetic vehicle detection system including feedback means for eliminating spurious presence indications
US3754223A (en) * 1970-01-21 1973-08-21 Yeda Res & Dev Intruder detection system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007032707A1 (fr) * 2005-09-12 2007-03-22 Fond 'innovatsionny Tsentr Ibrae Ran' Procede de detection d'objets mobiles conducteurs d'electricite
CN101263537B (zh) * 2005-09-12 2011-08-24 英诺斯尼三特里艾博里兰基金 用于检测导电运动物体的方法

Also Published As

Publication number Publication date
BE805810A (fr) 1974-04-09
IT997407B (it) 1975-12-30
US3812484A (en) 1974-05-21
FR2202330B1 (zh) 1978-06-30
SE385163B (sv) 1976-06-08
NL7313839A (zh) 1974-04-16
TR18180A (tr) 1978-02-26
DE2350067A1 (de) 1974-04-18
JPS4973000A (zh) 1974-07-15
ES419479A1 (es) 1976-04-01
BR7307791D0 (pt) 1974-08-29
FR2202330A1 (zh) 1974-05-03

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee