JPS56104246A - Product inspecting apparatus by sound discrimination - Google Patents

Product inspecting apparatus by sound discrimination

Info

Publication number
JPS56104246A
JPS56104246A JP668480A JP668480A JPS56104246A JP S56104246 A JPS56104246 A JP S56104246A JP 668480 A JP668480 A JP 668480A JP 668480 A JP668480 A JP 668480A JP S56104246 A JPS56104246 A JP S56104246A
Authority
JP
Japan
Prior art keywords
frequency
unit
product
sound generated
frequency patterns
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
JP668480A
Other languages
Japanese (ja)
Other versions
JPS6236535B2 (en
Inventor
Hidetomo Komura
Kunihide Orita
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.)
Rion Co Ltd
Original Assignee
Rion 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 Rion Co Ltd filed Critical Rion Co Ltd
Priority to JP668480A priority Critical patent/JPS56104246A/en
Publication of JPS56104246A publication Critical patent/JPS56104246A/en
Publication of JPS6236535B2 publication Critical patent/JPS6236535B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
    • G01H3/04—Frequency
    • G01H3/06—Frequency by electric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

PURPOSE:To automatically decide the quality of industrial products by detecting the sound generated from a manufactured industrial product and passing the sound through a frequency analyzer having a plurality of band-pass filters in order to discriminate. CONSTITUTION:The frequency patterns of the normal sound generated from a product 1 to be discriminated are previously stored in a memory unit 7, and the frequency patterns of the abnormal sound generated from a defective product are previously stored in a memory unit 8. The sound generated from the product 1 to be discriminated is detected by a detector 2, divided into frequency band components by a frequency analyzer unit 4, passed through an A/D converter unit 5 and a pre-edit unit 6 and formed into frequency patterns. These frequency patterns and all the frequency patterns of the normal and abnormal sounds stored in the memory units 7 and 8 are compared in a comparing unit 9. Thereby, discrimination between good and bad products is performed.
JP668480A 1980-01-23 1980-01-23 Product inspecting apparatus by sound discrimination Granted JPS56104246A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP668480A JPS56104246A (en) 1980-01-23 1980-01-23 Product inspecting apparatus by sound discrimination

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP668480A JPS56104246A (en) 1980-01-23 1980-01-23 Product inspecting apparatus by sound discrimination

Publications (2)

Publication Number Publication Date
JPS56104246A true JPS56104246A (en) 1981-08-19
JPS6236535B2 JPS6236535B2 (en) 1987-08-07

Family

ID=11645178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP668480A Granted JPS56104246A (en) 1980-01-23 1980-01-23 Product inspecting apparatus by sound discrimination

Country Status (1)

Country Link
JP (1) JPS56104246A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4988979A (en) * 1989-05-13 1991-01-29 Nippondenso Co., Ltd. Fault inspection system for rotary machines
JP2006058051A (en) * 2004-08-18 2006-03-02 Yamanashi Tlo:Kk Acoustic test method and device
WO2019044729A1 (en) * 2017-08-31 2019-03-07 Ntn株式会社 State-monitoring method and state-monitoring device
JP2019045484A (en) * 2017-08-31 2019-03-22 Ntn株式会社 State monitoring method, and state monitoring device
WO2020026829A1 (en) * 2018-07-31 2020-02-06 パナソニックＩｐマネジメント株式会社 Sound data processing method, sound data processing device, and program
JP2021110712A (en) * 2020-01-16 2021-08-02 トヨタ自動車株式会社 Damage diagnostic device for magnetized yoke

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4988979A (en) * 1989-05-13 1991-01-29 Nippondenso Co., Ltd. Fault inspection system for rotary machines
JP2006058051A (en) * 2004-08-18 2006-03-02 Yamanashi Tlo:Kk Acoustic test method and device
WO2019044729A1 (en) * 2017-08-31 2019-03-07 Ntn株式会社 State-monitoring method and state-monitoring device
JP2019045484A (en) * 2017-08-31 2019-03-22 Ntn株式会社 State monitoring method, and state monitoring device
WO2020026829A1 (en) * 2018-07-31 2020-02-06 パナソニックＩｐマネジメント株式会社 Sound data processing method, sound data processing device, and program
JPWO2020026829A1 (en) * 2018-07-31 2021-08-02 パナソニックＩｐマネジメント株式会社 Sound data processing method, sound data processing device and program
US11830518B2 (en) 2018-07-31 2023-11-28 Panasonic Intellectual Property Management Co., Ltd. Sound data processing method, sound data processing device, and program
JP2021110712A (en) * 2020-01-16 2021-08-02 トヨタ自動車株式会社 Damage diagnostic device for magnetized yoke

Also Published As

Publication number Publication date
JPS6236535B2 (en) 1987-08-07

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