JPS52116274A - Glass plate breakage inspecting apparatus - Google Patents

Glass plate breakage inspecting apparatus

Info

Publication number
JPS52116274A
JPS52116274A JP3335876A JP3335876A JPS52116274A JP S52116274 A JPS52116274 A JP S52116274A JP 3335876 A JP3335876 A JP 3335876A JP 3335876 A JP3335876 A JP 3335876A JP S52116274 A JPS52116274 A JP S52116274A
Authority
JP
Japan
Prior art keywords
glass plate
inspecting apparatus
plate breakage
breakage
frequency components
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.)
Granted
Application number
JP3335876A
Other languages
Japanese (ja)
Other versions
JPS579009B2 (en
Inventor
Masahiro Yanagi
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 Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3335876A priority Critical patent/JPS52116274A/en
Priority to GB1186877A priority patent/GB1551516A/en
Priority to DE19772713127 priority patent/DE2713127C3/en
Publication of JPS52116274A publication Critical patent/JPS52116274A/en
Publication of JPS579009B2 publication Critical patent/JPS579009B2/ja
Granted 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
    • G08B13/02—Mechanical actuation
    • G08B13/04—Mechanical actuation by breaking of glass

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE: Breakage and non-breakage of glass plates are reliably detected at high sensitivity by combining the high frequency components of more than 100KHz and low frequency components below 50KHz from the vibrations of the glass plate detected by a piezoelectric element.
COPYRIGHT: (C)1977,JPO&Japio
JP3335876A 1976-03-25 1976-03-25 Glass plate breakage inspecting apparatus Granted JPS52116274A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP3335876A JPS52116274A (en) 1976-03-25 1976-03-25 Glass plate breakage inspecting apparatus
GB1186877A GB1551516A (en) 1976-03-25 1977-03-21 Glass facture detecting apparatus
DE19772713127 DE2713127C3 (en) 1976-03-25 1977-03-22 Device for detecting the breakage of a pane of glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3335876A JPS52116274A (en) 1976-03-25 1976-03-25 Glass plate breakage inspecting apparatus

Publications (2)

Publication Number Publication Date
JPS52116274A true JPS52116274A (en) 1977-09-29
JPS579009B2 JPS579009B2 (en) 1982-02-19

Family

ID=12384349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3335876A Granted JPS52116274A (en) 1976-03-25 1976-03-25 Glass plate breakage inspecting apparatus

Country Status (3)

Country Link
JP (1) JPS52116274A (en)
DE (1) DE2713127C3 (en)
GB (1) GB1551516A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3043912A1 (en) * 1980-11-21 1982-07-01 alfasystem GmbH Vertrieb von elektronischen Sicherheitssystemen, 8034 Germering Glass breakage detector - uses piezoelectric break noise sensor coupled to detector circuit with protection against false triggering
DE3121705A1 (en) * 1980-11-21 1982-12-16 alfasystem GmbH Vertrieb von elektronischen Sicherheitssystemen, 8034 Germering Glass breakage detector
DE3142705C2 (en) * 1981-10-28 1986-06-12 Securiton AG, Zollikofen, Bern Device for monitoring the condition of a body suitable for the transmission of sound waves
DE3475126D1 (en) * 1984-04-30 1988-12-15 Fuss Fritz Gmbh & Co Glass breakage detector
GB2171518B (en) * 1985-02-08 1988-09-01 Automated Security Holdings Glass break detector
US4758824A (en) * 1985-08-22 1988-07-19 Heinz Jurgen Bernhard Fechner Alarm for a blind
SE456951B (en) * 1987-03-06 1988-11-14 Lars Eriksson ALARM DEVICE STEPPED BY A WINDOW CONSTRUCTION AND INCLUDING AT LEAST ONE TRANSMITTER OF ULTRA SOUND
PT1257173E (en) * 2000-02-10 2009-07-01 Wegra Beheer B V Baking apparatus and method for baking edible products

Also Published As

Publication number Publication date
DE2713127A1 (en) 1977-09-29
DE2713127B2 (en) 1980-03-27
DE2713127C3 (en) 1980-11-13
JPS579009B2 (en) 1982-02-19
GB1551516A (en) 1979-08-30

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