GB1581479A - Detecting device for destructive vibration of structures - Google Patents

Detecting device for destructive vibration of structures Download PDF

Info

Publication number
GB1581479A
GB1581479A GB2047777A GB2047777A GB1581479A GB 1581479 A GB1581479 A GB 1581479A GB 2047777 A GB2047777 A GB 2047777A GB 2047777 A GB2047777 A GB 2047777A GB 1581479 A GB1581479 A GB 1581479A
Authority
GB
United Kingdom
Prior art keywords
output
counter
operational amplifier
condenser
circuit
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
GB2047777A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Works 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
Priority claimed from JP6321576U external-priority patent/JPS5828313Y2/ja
Priority claimed from JP51127488A external-priority patent/JPS5830636B2/ja
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Publication of GB1581479A publication Critical patent/GB1581479A/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
    • G08B13/16—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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Emergency Alarm Devices (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
GB2047777A 1976-05-17 1977-05-16 Detecting device for destructive vibration of structures Expired GB1581479A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6321576U JPS5828313Y2 (ja) 1976-05-17 1976-05-17 壁破壊検知器の取付装置
JP51127488A JPS5830636B2 (ja) 1976-10-22 1976-10-22 コンクリ−ト構造物破壊検出方式

Publications (1)

Publication Number Publication Date
GB1581479A true GB1581479A (en) 1980-12-17

Family

ID=26404299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2047777A Expired GB1581479A (en) 1976-05-17 1977-05-16 Detecting device for destructive vibration of structures

Country Status (6)

Country Link
AU (1) AU499496B2 (sv)
DE (1) DE2721880C3 (sv)
FR (1) FR2352351A1 (sv)
GB (1) GB1581479A (sv)
IT (1) IT1078259B (sv)
SE (1) SE432028B (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002035490A1 (en) * 2000-10-26 2002-05-02 Nordan As Alarm chip and use of the alarm chip

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2852664C2 (de) * 1978-12-06 1982-08-19 Cerberus AG, 8708 Männedorf, Zürich Verfahren und Anordnung zur Einbruchmeldung
DE3142705C2 (de) * 1981-10-28 1986-06-12 Securiton AG, Zollikofen, Bern Vorrichtung zur Überwachung des Zustandes eines zur Fortleitung von Schallwellen geeigneten Körpers
DE3249866C2 (en) * 1982-06-11 1988-07-14 Securiton Ag, Zollikofen, Bern, Ch Acoustic-electrical transducer for monitoring armoured rooms (spaces)
DE3221997A1 (de) * 1982-06-11 1983-12-15 Securiton AG, 3052 Zollikofen, Bern Vorrichtung zum ueberwachen von gepanzerten raeumen, insbesondere von tresoren und kassenschraenken, und zum erzeugen eines alarmsignales, wenn ein einbruchversuch unternommen wird
DE3534806A1 (de) * 1985-09-30 1987-04-02 Jaufmann Ingrid Alarmanlage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3147467A (en) * 1961-09-07 1964-09-01 American District Telegraph Co Vibration detection vault alarm system
US3364477A (en) * 1965-02-15 1968-01-16 American District Telegraph Co Vault alarm system
CH541844A (de) * 1971-08-25 1973-09-15 Securiton Ag Vorrichtung zum Überwachen von Objekten und zum Erzeugen eines Alarmsignales, wenn ein Einbruchsversuch unternommen wird
US3947835A (en) * 1974-07-01 1976-03-30 Gte Sylvania Incorporated Fence protection system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002035490A1 (en) * 2000-10-26 2002-05-02 Nordan As Alarm chip and use of the alarm chip
US6989746B2 (en) 2000-10-26 2006-01-24 Nordan As Alarm chip and use of the alarm chip

Also Published As

Publication number Publication date
AU2525777A (en) 1978-11-23
DE2721880B2 (de) 1980-11-13
DE2721880C3 (de) 1981-09-17
SE432028B (sv) 1984-03-12
AU499496B2 (en) 1979-04-26
SE7705727L (sv) 1977-11-18
FR2352351B1 (sv) 1984-05-04
FR2352351A1 (fr) 1977-12-16
DE2721880A1 (de) 1977-11-24
IT1078259B (it) 1985-05-08

Similar Documents

Publication Publication Date Title
US4180811A (en) Detecting device for destructive vibration of structures
US4418335A (en) Infrared intrusion detector with pyroelectric sensor and charge amplifier
US4054867A (en) Detecting damage to bulk material
US3134970A (en) Alarm system
US4608501A (en) Tripping apparatus for an occupant protection apparatus in vehicles
EP0525549A2 (en) Acceleration sensor with self-test, and circuit therefor
US3947835A (en) Fence protection system
US3828337A (en) Noise rejection circuitry
GB1573618A (en) Intruder alarm systems
GB1581479A (en) Detecting device for destructive vibration of structures
US2767393A (en) Approach alarm system with unwanted signal elimination
US4520349A (en) Alarm system activated by buzzers
US3771152A (en) Intrusion detector
EP0187149B1 (en) Fire sensing and suppression method and system responsive to optical radiation and mechanical wave energy
US4199755A (en) Optical smoke detector
JPS6415661A (en) Trouble detector of rotary pulse generator
US3579220A (en) Alarm system
ES425125A1 (es) Perfeccionamientos en los sistemas de circuito de aviso de incendios.
EP0387837A3 (en) Externally discernible power supply abnormality detection system
US5376919A (en) Vehicle intrusion detector
US3706961A (en) Automatic alarm system
US4290058A (en) Method and apparatus for intrusion detection by using sonic receivers
US4900951A (en) Latch-up restoration circuit
US4506161A (en) Smoke detector with a radiation source operated in a pulse-like or intermittent mode
US4044258A (en) Nuclear explosion detector with false alarm prevention

Legal Events

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

Effective date: 19950516