GR3005179T3 - - Google Patents

Info

Publication number
GR3005179T3
GR3005179T3 GR920401525T GR920401525T GR3005179T3 GR 3005179 T3 GR3005179 T3 GR 3005179T3 GR 920401525 T GR920401525 T GR 920401525T GR 920401525 T GR920401525 T GR 920401525T GR 3005179 T3 GR3005179 T3 GR 3005179T3
Authority
GR
Greece
Prior art keywords
threshold value
microphone
regulation
varying
door
Prior art date
Application number
GR920401525T
Other languages
English (en)
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9356331&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GR3005179(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed filed Critical
Publication of GR3005179T3 publication Critical patent/GR3005179T3/el

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
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
    • G08B13/1681—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using infrasonic detecting means, e.g. a microphone operating below the audible frequency range

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Measuring Fluid Pressure (AREA)
  • Burglar Alarm Systems (AREA)
  • Emergency Alarm Devices (AREA)
GR920401525T 1987-10-30 1992-07-15 GR3005179T3 (el)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8715052A FR2622719A1 (fr) 1987-10-30 1987-10-30 Detecteur differentiel de pression acoustique

Publications (1)

Publication Number Publication Date
GR3005179T3 true GR3005179T3 (el) 1993-05-24

Family

ID=9356331

Family Applications (1)

Application Number Title Priority Date Filing Date
GR920401525T GR3005179T3 (el) 1987-10-30 1992-07-15

Country Status (8)

Country Link
EP (1) EP0317459B1 (el)
AT (1) ATE75063T1 (el)
CA (1) CA1311292C (el)
DE (1) DE3870163D1 (el)
DK (1) DK169647B1 (el)
FR (1) FR2622719A1 (el)
GR (1) GR3005179T3 (el)
NO (1) NO174487C (el)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2263771A (en) * 1992-01-04 1993-08-04 Sound International Ltd Intruder alarms
EP0635409B1 (en) * 1993-07-19 1998-09-16 Ping Lee An automobile and an alarm system in combination

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3569923A (en) * 1967-10-30 1971-03-09 Us Navy Adaptive acoustic detector apparatus
FR2122343B1 (el) * 1971-01-21 1975-02-21 Ato Inc
GB1605185A (en) * 1976-11-09 1983-03-02 Plessey Co Ltd Sensing arrangements
US4442514A (en) * 1981-11-17 1984-04-10 The United States Of America As Represented By The Secretary Of The Air Force Security system signal processor
US4479113A (en) * 1982-01-20 1984-10-23 The United States Of America As Represented By The United States Department Of Energy Compensated intruder-detection systems
FR2523339A1 (fr) * 1982-03-12 1983-09-16 Guglielmetti Vg Electro Dispositif de detection a capteur volumetrique a infra-sons et procede de detection par infra-sons
DE3300906A1 (de) * 1983-01-13 1984-07-19 Mauro 2054 Geesthacht Marmotti Verfahren und vorrichtung zur raum- und gebaeudeueberwachung

Also Published As

Publication number Publication date
EP0317459A3 (en) 1989-08-09
FR2622719A1 (fr) 1989-05-05
ATE75063T1 (de) 1992-05-15
DK601688D0 (da) 1988-10-28
CA1311292C (fr) 1992-12-08
NO174487C (no) 1994-05-11
DK601688A (da) 1989-05-01
EP0317459A2 (fr) 1989-05-24
NO174487B (no) 1994-01-31
NO884823D0 (no) 1988-10-28
NO884823L (no) 1989-05-02
DK169647B1 (da) 1995-01-02
EP0317459B1 (fr) 1992-04-15
DE3870163D1 (de) 1992-05-21

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