GB2108301B - Intruder alarm device - Google Patents

Intruder alarm device

Info

Publication number
GB2108301B
GB2108301B GB08125047A GB8125047A GB2108301B GB 2108301 B GB2108301 B GB 2108301B GB 08125047 A GB08125047 A GB 08125047A GB 8125047 A GB8125047 A GB 8125047A GB 2108301 B GB2108301 B GB 2108301B
Authority
GB
United Kingdom
Prior art keywords
alarm device
intruder alarm
intruder
alarm
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
GB08125047A
Other versions
GB2108301A (en
Inventor
Barrington John Leonard White
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.)
MUNFORD AND WHITE Ltd
Original Assignee
MUNFORD AND WHITE 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 MUNFORD AND WHITE Ltd filed Critical MUNFORD AND WHITE Ltd
Priority to GB08125047A priority Critical patent/GB2108301B/en
Publication of GB2108301A publication Critical patent/GB2108301A/en
Application granted granted Critical
Publication of GB2108301B publication Critical patent/GB2108301B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/50—Systems of measurement, based on relative movement of the target
    • G01S15/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S15/523—Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Security & Cryptography (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Burglar Alarm Systems (AREA)
GB08125047A 1981-08-17 1981-08-17 Intruder alarm device Expired GB2108301B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08125047A GB2108301B (en) 1981-08-17 1981-08-17 Intruder alarm device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08125047A GB2108301B (en) 1981-08-17 1981-08-17 Intruder alarm device

Publications (2)

Publication Number Publication Date
GB2108301A GB2108301A (en) 1983-05-11
GB2108301B true GB2108301B (en) 1985-06-19

Family

ID=10523982

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08125047A Expired GB2108301B (en) 1981-08-17 1981-08-17 Intruder alarm device

Country Status (1)

Country Link
GB (1) GB2108301B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157041A (en) * 1984-02-16 1985-10-16 Jorge Caro Bolton Thermal alarm system
GB9702242D0 (en) * 1997-02-04 1997-03-26 Plessey Semiconductors Ltd Alarm sensor and antenna arrangement
GB2322029A (en) * 1997-02-04 1998-08-12 Plessey Semiconductors Ltd Microwave vehicle alarm
EP1031853A3 (en) * 1999-02-27 2001-04-25 Delphi Technologies, Inc. Radar sensors and radar system for area surveillance
DE10151740A1 (en) * 2001-10-19 2003-04-30 Delphi Tech Inc Car security system comprises short distance radar to reduce false alarms

Also Published As

Publication number Publication date
GB2108301A (en) 1983-05-11

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Legal Events

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