JPS5235680A - Device for detecting breakage of glass - Google Patents

Device for detecting breakage of glass

Info

Publication number
JPS5235680A
JPS5235680A JP50111421A JP11142175A JPS5235680A JP S5235680 A JPS5235680 A JP S5235680A JP 50111421 A JP50111421 A JP 50111421A JP 11142175 A JP11142175 A JP 11142175A JP S5235680 A JPS5235680 A JP S5235680A
Authority
JP
Japan
Prior art keywords
glass
detecting breakage
breakage
detecting
providing
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
JP50111421A
Other languages
Japanese (ja)
Other versions
JPS5757970B2 (en
Inventor
Masahiro Yanagi
Yukihiko Ise
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 JP50111421A priority Critical patent/JPS5235680A/en
Publication of JPS5235680A publication Critical patent/JPS5235680A/en
Publication of JPS5757970B2 publication Critical patent/JPS5757970B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Burglar Alarm Systems (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE: To accurately measure the breakage of glass sheets by providing a selective amplifier having high-pass frequency characteristics for more than 0.5 MHz connected to a piezoelectric element.
COPYRIGHT: (C)1977,JPO&Japio
JP50111421A 1975-09-12 1975-09-12 Device for detecting breakage of glass Granted JPS5235680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50111421A JPS5235680A (en) 1975-09-12 1975-09-12 Device for detecting breakage of glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50111421A JPS5235680A (en) 1975-09-12 1975-09-12 Device for detecting breakage of glass

Publications (2)

Publication Number Publication Date
JPS5235680A true JPS5235680A (en) 1977-03-18
JPS5757970B2 JPS5757970B2 (en) 1982-12-07

Family

ID=14560738

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50111421A Granted JPS5235680A (en) 1975-09-12 1975-09-12 Device for detecting breakage of glass

Country Status (1)

Country Link
JP (1) JPS5235680A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006126903A (en) * 2004-10-26 2006-05-18 Rion Co Ltd Translucent board equipped with piezoelectric/pyroelectric element and building/structure/vehicle using the same
JP5313949B2 (en) * 2010-03-11 2013-10-09 セコム株式会社 Glass breakage detector

Also Published As

Publication number Publication date
JPS5757970B2 (en) 1982-12-07

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