SE9103386D0 - GLASS GROSS DETECTION - Google Patents

GLASS GROSS DETECTION

Info

Publication number
SE9103386D0
SE9103386D0 SE9103386A SE9103386A SE9103386D0 SE 9103386 D0 SE9103386 D0 SE 9103386D0 SE 9103386 A SE9103386 A SE 9103386A SE 9103386 A SE9103386 A SE 9103386A SE 9103386 D0 SE9103386 D0 SE 9103386D0
Authority
SE
Sweden
Prior art keywords
glass
detection
pane
alarm signal
glass gross
Prior art date
Application number
SE9103386A
Other languages
Swedish (sv)
Other versions
SE9103386L (en
Inventor
Lennart Hedlund
Original Assignee
Lennart Hedlund
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 Lennart Hedlund filed Critical Lennart Hedlund
Priority to SE9103386A priority Critical patent/SE9103386L/en
Publication of SE9103386D0 publication Critical patent/SE9103386D0/en
Priority to PCT/SE1992/000786 priority patent/WO1993010513A1/en
Publication of SE9103386L publication Critical patent/SE9103386L/en

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
    • G08B13/04—Mechanical actuation by breaking of glass

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Burglar Alarm Systems (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

There are disclosed a method and a device for detection of the breaking of a pane of glass for delivery of an alarm signal. By means of a broad band ultrasonic sensor ultrasonic waves are detected, said waves being generated when a pane of glass is broken, an alarm signal being delivered upon receipt of ultrasonic waves within the frequency range of 50 - 110 kHz having amplitudes exceeding a predetermined threshold level.
SE9103386A 1991-11-15 1991-11-15 Glass Break Detection SE9103386L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9103386A SE9103386L (en) 1991-11-15 1991-11-15 Glass Break Detection
PCT/SE1992/000786 WO1993010513A1 (en) 1991-11-15 1992-11-13 Glass break detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9103386A SE9103386L (en) 1991-11-15 1991-11-15 Glass Break Detection

Publications (2)

Publication Number Publication Date
SE9103386D0 true SE9103386D0 (en) 1991-11-15
SE9103386L SE9103386L (en) 1993-05-16

Family

ID=20384342

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9103386A SE9103386L (en) 1991-11-15 1991-11-15 Glass Break Detection

Country Status (2)

Country Link
SE (1) SE9103386L (en)
WO (1) WO1993010513A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3298318B2 (en) * 1994-07-18 2002-07-02 株式会社デンソー Glass break detector
DE102015111392A1 (en) * 2015-07-14 2017-01-19 Vorwerk & Co. Interholding Gmbh Method for operating a surface treatment device
DE102015113035A1 (en) 2015-08-07 2017-02-09 Vorwerk & Co. Interholding Gmbh Surface treatment device and base station

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1323451A (en) * 1970-01-17 1973-07-18 Sonicaid Ltd Alarm systems
US4054867A (en) * 1971-12-10 1977-10-18 Microwave And Electronic Systems Limited Detecting damage to bulk material
CH594943A5 (en) * 1976-09-09 1978-01-31 Spirig Ernst
US4134109A (en) * 1977-05-16 1979-01-09 Omni Spectra, Inc. Alarm system responsive to the breaking of glass
FR2539534A1 (en) * 1983-01-17 1984-07-20 Alsthom Cgee Test arrangement for detecting the breaking of glass
GB2171518B (en) * 1985-02-08 1988-09-01 Automated Security Holdings Glass break detector
DE3504552A1 (en) * 1985-02-11 1986-08-14 Wurm, Fritz, 4600 Dortmund Alarm-triggering device and apparatus operating without installation
DE9003065U1 (en) * 1989-04-12 1990-10-25 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
WO1992006455A1 (en) * 1990-09-28 1992-04-16 Siemens Aktiengesellschaft Process for monitoring the windows of a room

Also Published As

Publication number Publication date
WO1993010513A1 (en) 1993-05-27
SE9103386L (en) 1993-05-16

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Legal Events

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Effective date: 19930820