IT975986B - Dispositivo rivelatore di lesioni in un materiale conduttore di fre quenze ultrasconiche particolarmente per sistemi d allarme - Google Patents

Dispositivo rivelatore di lesioni in un materiale conduttore di fre quenze ultrasconiche particolarmente per sistemi d allarme

Info

Publication number
IT975986B
IT975986B IT70863/72A IT7086372A IT975986B IT 975986 B IT975986 B IT 975986B IT 70863/72 A IT70863/72 A IT 70863/72A IT 7086372 A IT7086372 A IT 7086372A IT 975986 B IT975986 B IT 975986B
Authority
IT
Italy
Prior art keywords
ultrasconic
conductor material
detector device
alarm systems
material particularly
Prior art date
Application number
IT70863/72A
Other languages
English (en)
Italian (it)
Original Assignee
Microwave & Electronic Syst
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 Microwave & Electronic Syst filed Critical Microwave & Electronic Syst
Application granted granted Critical
Publication of IT975986B publication Critical patent/IT975986B/it

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)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
IT70863/72A 1971-12-10 1972-12-07 Dispositivo rivelatore di lesioni in un materiale conduttore di fre quenze ultrasconiche particolarmente per sistemi d allarme IT975986B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5759871A GB1402530A (en) 1971-12-10 1971-12-10 Detecting damage to glass

Publications (1)

Publication Number Publication Date
IT975986B true IT975986B (it) 1974-08-10

Family

ID=10479560

Family Applications (1)

Application Number Title Priority Date Filing Date
IT70863/72A IT975986B (it) 1971-12-10 1972-12-07 Dispositivo rivelatore di lesioni in un materiale conduttore di fre quenze ultrasconiche particolarmente per sistemi d allarme

Country Status (6)

Country Link
JP (1) JPS563598B2 (fr)
DE (1) DE2260352C2 (fr)
FR (1) FR2162577B1 (fr)
GB (1) GB1402530A (fr)
IT (1) IT975986B (fr)
ZA (1) ZA728609B (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2254540C3 (de) * 1972-11-08 1981-06-04 Wilhelm 6700 Ludwigshafen Karger Schaltungsanordnung für einen Schwingungsmelder für Ruhestrom-Alarm-Anlagen
JPS5068687U (fr) * 1973-10-26 1975-06-19
JPS50130398A (fr) * 1974-03-30 1975-10-15
JPS5879B2 (ja) * 1975-02-08 1983-01-05 株式会社富士通ゼネラル カンシソウチ
JPS51152349U (fr) * 1975-05-29 1976-12-04
JPS584397B2 (ja) * 1975-09-11 1983-01-26 株式会社富士通ゼネラル カンシソウチ
JPS5265489U (fr) * 1975-11-11 1977-05-14
US4091660A (en) * 1977-03-16 1978-05-30 Matsushita Electric Industrial Co., Ltd. Apparatus for detecting the breaking of a glass plate
DE3043912A1 (de) * 1980-11-21 1982-07-01 alfasystem GmbH Vertrieb von elektronischen Sicherheitssystemen, 8034 Germering Glasbruchmelder mit abgesetzter auswerteelektronik
DE3142705C2 (de) * 1981-10-28 1986-06-12 Securiton AG, Zollikofen, Bern Vorrichtung zur Überwachung des Zustandes eines zur Fortleitung von Schallwellen geeigneten Körpers
GB2129592B (en) * 1982-07-02 1986-09-10 Paul Coleman Motion sensor
DE9003065U1 (fr) * 1989-04-12 1990-10-25 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
GB2348496A (en) * 1999-03-31 2000-10-04 Frazer Nash Consultancy Ltd Method and apparatus for the detection of scratching and similar surface action to glass
CN108242122A (zh) * 2016-12-23 2018-07-03 浙江金徕镀膜有限公司 一种用于清理切磨导致破碎的玻璃的报警装置
GB2603887A (en) * 2020-11-24 2022-08-24 Novosound Ltd Tamper proof ultrasound sensor
CN113203800B (zh) * 2021-05-25 2022-11-18 江苏大学 一种用于叉指式换能器的性能标定装置及标定方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB627038A (en) * 1946-11-09 1949-07-26 Ferranti Ltd Improvements in means for detecting mechanical vibrations caused by friction
GB1186044A (en) * 1967-04-25 1970-04-02 Electronic Lab Ltd Formerly El Alarm Circuit
DE2127562B2 (de) * 1971-06-03 1979-05-23 Spirig, Ernst, Dipl.-Ing., Rapperswil (Schweiz) Vorrichtung zur Anzeige von Glasscheibenbruch

Also Published As

Publication number Publication date
AU4978572A (en) 1974-06-13
JPS563598B2 (fr) 1981-01-26
ZA728609B (en) 1973-08-29
JPS4866485A (fr) 1973-09-12
FR2162577A1 (fr) 1973-07-20
DE2260352C2 (de) 1985-01-17
DE2260352A1 (de) 1973-06-28
GB1402530A (en) 1975-08-13
FR2162577B1 (fr) 1980-07-25

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