GB2091874B - Intruder detection system - Google Patents

Intruder detection system

Info

Publication number
GB2091874B
GB2091874B GB8201331A GB8201331A GB2091874B GB 2091874 B GB2091874 B GB 2091874B GB 8201331 A GB8201331 A GB 8201331A GB 8201331 A GB8201331 A GB 8201331A GB 2091874 B GB2091874 B GB 2091874B
Authority
GB
United Kingdom
Prior art keywords
detection system
intruder detection
intruder
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
Application number
GB8201331A
Other versions
GB2091874A (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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB8201331A priority Critical patent/GB2091874B/en
Publication of GB2091874A publication Critical patent/GB2091874A/en
Application granted granted Critical
Publication of GB2091874B publication Critical patent/GB2091874B/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
    • G08B13/02—Mechanical actuation
    • G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
GB8201331A 1981-01-22 1982-01-18 Intruder detection system Expired GB2091874B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8201331A GB2091874B (en) 1981-01-22 1982-01-18 Intruder detection system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8101881 1981-01-22
GB8201331A GB2091874B (en) 1981-01-22 1982-01-18 Intruder detection system

Publications (2)

Publication Number Publication Date
GB2091874A GB2091874A (en) 1982-08-04
GB2091874B true GB2091874B (en) 1984-11-14

Family

ID=26278180

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8201331A Expired GB2091874B (en) 1981-01-22 1982-01-18 Intruder detection system

Country Status (1)

Country Link
GB (1) GB2091874B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1145924B (en) * 1981-08-19 1986-11-12 Ci Ka Ra Spa ANTI-THEFT FENCING NET
EP0278143B1 (en) * 1987-02-13 1991-07-31 G2 SYSTEMS CORPORATION (a California corporation) Structural monitoring system using fiber optics
US5026141A (en) * 1981-08-24 1991-06-25 G2 Systems Corporation Structural monitoring system using fiber optics
US4927232A (en) * 1985-03-18 1990-05-22 G2 Systems Corporation Structural monitoring system using fiber optics
GB2122337B (en) * 1982-05-18 1985-11-13 Nat Res Dev Fibre optic sensing device
GB2138983A (en) * 1983-03-25 1984-10-31 Graham David Francis Sharp Portable alarm system
GB2147439B (en) * 1983-10-01 1986-09-10 Standard Telephones Cables Ltd Intruder detector
GB2182182B (en) * 1985-04-24 1989-06-28 Sound Special Services Limited Intrusion detecting device
IL78728A (en) * 1986-05-08 1990-07-12 Magal Security Systems Ltd Security fence
IL78856A (en) * 1986-05-20 1990-07-12 Magal Security Systems Ltd Sensor for a security fence
RU95108004A (en) * 1995-05-25 1997-02-10 Акционерное общество закрытого типа "НТФ Интерсвязь" Fiber-optical device for emergency alarm
US7800047B2 (en) * 2003-05-03 2010-09-21 Woven Electronics, Llc Apparatus and method for a computerized fiber optic security system
GB2434016B (en) * 2005-08-26 2010-09-22 Cronapress Ltd Alarm system
DE102007013140A1 (en) * 2007-03-15 2008-09-18 Hochschule Niederrhein Optical switching device
US7821418B2 (en) 2007-04-24 2010-10-26 Cronapress Limited Safety system

Also Published As

Publication number Publication date
GB2091874A (en) 1982-08-04

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960118