JPS6148757B2 - - Google Patents

Info

Publication number
JPS6148757B2
JPS6148757B2 JP9119378A JP9119378A JPS6148757B2 JP S6148757 B2 JPS6148757 B2 JP S6148757B2 JP 9119378 A JP9119378 A JP 9119378A JP 9119378 A JP9119378 A JP 9119378A JP S6148757 B2 JPS6148757 B2 JP S6148757B2
Authority
JP
Japan
Prior art keywords
output
signal
metal object
frequency filter
level
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
JP9119378A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5518754A (en
Inventor
Toshuki Masuda
Juji Hara
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 Electric Works Co Ltd
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
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP9119378A priority Critical patent/JPS5518754A/ja
Publication of JPS5518754A publication Critical patent/JPS5518754A/ja
Publication of JPS6148757B2 publication Critical patent/JPS6148757B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Burglar Alarm Systems (AREA)
JP9119378A 1978-07-25 1978-07-25 Metallic article breakage detecting sensor Granted JPS5518754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9119378A JPS5518754A (en) 1978-07-25 1978-07-25 Metallic article breakage detecting sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9119378A JPS5518754A (en) 1978-07-25 1978-07-25 Metallic article breakage detecting sensor

Publications (2)

Publication Number Publication Date
JPS5518754A JPS5518754A (en) 1980-02-09
JPS6148757B2 true JPS6148757B2 (enExample) 1986-10-25

Family

ID=14019597

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9119378A Granted JPS5518754A (en) 1978-07-25 1978-07-25 Metallic article breakage detecting sensor

Country Status (1)

Country Link
JP (1) JPS5518754A (enExample)

Also Published As

Publication number Publication date
JPS5518754A (en) 1980-02-09

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