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GB2221990B - Intrusion detection system - Google Patents

Intrusion detection system

Info

Publication number
GB2221990B
GB2221990B GB8819550A GB8819550A GB2221990B GB 2221990 B GB2221990 B GB 2221990B GB 8819550 A GB8819550 A GB 8819550A GB 8819550 A GB8819550 A GB 8819550A GB 2221990 B GB2221990 B GB 2221990B
Authority
GB
United Kingdom
Prior art keywords
detection system
intrusion detection
intrusion
detection
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 - Lifetime
Application number
GB8819550A
Other versions
GB2221990A (en
GB8819550D0 (en
Inventor
Roger William Leslie Hoyle
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.)
Shorrock Ltd
Original Assignee
Shorrock Ltd
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 Shorrock Ltd filed Critical Shorrock Ltd
Priority to GB8819550A priority Critical patent/GB2221990B/en
Publication of GB8819550D0 publication Critical patent/GB8819550D0/en
Publication of GB2221990A publication Critical patent/GB2221990A/en
Application granted granted Critical
Publication of GB2221990B publication Critical patent/GB2221990B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G08B13/02—Mechanical actuation
    • G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
    • G08B13/122—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a perimeter fence

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
GB8819550A 1988-08-17 1988-08-17 Intrusion detection system Expired - Lifetime GB2221990B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8819550A GB2221990B (en) 1988-08-17 1988-08-17 Intrusion detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8819550A GB2221990B (en) 1988-08-17 1988-08-17 Intrusion detection system

Publications (3)

Publication Number Publication Date
GB8819550D0 GB8819550D0 (en) 1989-03-30
GB2221990A GB2221990A (en) 1990-02-21
GB2221990B true GB2221990B (en) 1992-04-08

Family

ID=10642274

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8819550A Expired - Lifetime GB2221990B (en) 1988-08-17 1988-08-17 Intrusion detection system

Country Status (1)

Country Link
GB (1) GB2221990B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102346948A (en) * 2011-09-07 2012-02-08 无锡国科微纳传感网科技有限公司 Circumference invasion detection method and system
CN105261136A (en) * 2015-10-23 2016-01-20 长沙学院 Method and device for shielding weather interference in fiber monitoring alarm system

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8828877D0 (en) * 1988-12-09 1989-01-18 Atomic Energy Authority Uk Alarm system
GB9005751D0 (en) * 1990-03-14 1990-05-09 Geoquip Ltd Intrusion detection system and signal processing circuitry therefor
GB9106828D0 (en) * 1991-04-02 1991-05-22 System Silicon Plc Ball game monitor
GB2295230A (en) * 1994-10-05 1996-05-22 Cqr Security Components Ltd Shock sensor apparatus and method
FR2863395B1 (en) * 2003-12-04 2006-04-21 Internat Pool Safety And Light BARRIER HAVING A CROSS CONSTRAINT DETECTION DEVICE
IL164891A (en) 2004-10-28 2009-02-11 El Far Electronics Systems 200 Electronic warning system and method
ATE412229T1 (en) * 2006-05-23 2008-11-15 El Far Electronics Systems 200 ELECTRONIC WARNING SYSTEM AND METHOD
CN116844294B (en) * 2023-06-19 2025-10-28 中国民航科学技术研究院 Device and method for detecting alarm response time of perimeter intrusion alarm system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2023318A (en) * 1978-04-11 1979-12-28 Sesco Ltd Electronic analysers and vibration detector systems incorporating the same
EP0081860A2 (en) * 1981-05-18 1983-06-22 David R. Scott Perimeter security system
GB2124763A (en) * 1982-06-11 1984-02-22 Securiton Ag Alarm system
GB2144287A (en) * 1983-07-22 1985-02-27 Nat Res Dev Analog-to-digital converters for seismometers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2023318A (en) * 1978-04-11 1979-12-28 Sesco Ltd Electronic analysers and vibration detector systems incorporating the same
EP0081860A2 (en) * 1981-05-18 1983-06-22 David R. Scott Perimeter security system
GB2124763A (en) * 1982-06-11 1984-02-22 Securiton Ag Alarm system
GB2144287A (en) * 1983-07-22 1985-02-27 Nat Res Dev Analog-to-digital converters for seismometers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102346948A (en) * 2011-09-07 2012-02-08 无锡国科微纳传感网科技有限公司 Circumference invasion detection method and system
CN105261136A (en) * 2015-10-23 2016-01-20 长沙学院 Method and device for shielding weather interference in fiber monitoring alarm system
CN105261136B (en) * 2015-10-23 2017-06-16 长沙学院 The method and device of weather interference is shielded in a kind of fiber-optic monitoring warning system

Also Published As

Publication number Publication date
GB2221990A (en) 1990-02-21
GB8819550D0 (en) 1989-03-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970817