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JPS57124205A - Inspection device for surface of cylindrical body - Google Patents

Inspection device for surface of cylindrical body

Info

Publication number
JPS57124205A
JPS57124205A JP963681A JP963681A JPS57124205A JP S57124205 A JPS57124205 A JP S57124205A JP 963681 A JP963681 A JP 963681A JP 963681 A JP963681 A JP 963681A JP S57124205 A JPS57124205 A JP S57124205A
Authority
JP
Japan
Prior art keywords
defective
frequency
circuits
inputted
discriminating
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
JP963681A
Other languages
Japanese (ja)
Other versions
JPS6355655B2 (en
Inventor
Michiaki Miyagawa
Yutaka Yunoki
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Fuji Electric Manufacturing 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 Fuji Electric Co Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP963681A priority Critical patent/JPS57124205A/en
Publication of JPS57124205A publication Critical patent/JPS57124205A/en
Publication of JPS6355655B2 publication Critical patent/JPS6355655B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
    • G01B11/303—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces using photoelectric detection means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

PURPOSE:To prevent a normal body from being rejected as a defective in error by discriminating between a joint and a defective part by extracting plural- frequency-band components from the output signal of a sensor and performing the decision by binary coding which uses a high-sensitivity and a low-sensitivity level. CONSTITUTION:The output signal of an optical fiber sensor 31 is inputted to frequency-band emphasizing circuits 32 and 33 to extract a high-frequency and an intermediate-frequency component, which are binary-coded by comparing circuits 34 and 36, and 35 and 37 which have different comparison levels. To solve an output of a similar multiple defective, a low-frequency-component emphasizing circuit 38 and a comparing circuit 39 are further provided. The outputs of the circuits 34 and 35 are inputted to an interval decision processing part 41, and those of the circuits 36, 37, and 39 are inputted to a multiple-defective decision processing part 42 to check their correlation, thus discriminating between a defective and an imcomplete joint.
JP963681A 1981-01-27 1981-01-27 Inspection device for surface of cylindrical body Granted JPS57124205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP963681A JPS57124205A (en) 1981-01-27 1981-01-27 Inspection device for surface of cylindrical body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP963681A JPS57124205A (en) 1981-01-27 1981-01-27 Inspection device for surface of cylindrical body

Publications (2)

Publication Number Publication Date
JPS57124205A true JPS57124205A (en) 1982-08-03
JPS6355655B2 JPS6355655B2 (en) 1988-11-04

Family

ID=11725713

Family Applications (1)

Application Number Title Priority Date Filing Date
JP963681A Granted JPS57124205A (en) 1981-01-27 1981-01-27 Inspection device for surface of cylindrical body

Country Status (1)

Country Link
JP (1) JPS57124205A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6029606A (en) * 1983-07-28 1985-02-15 Shinko Electric Co Ltd Attitude discriminating method of parts
JPS6121918U (en) * 1984-07-16 1986-02-08 株式会社明電舎 Case seam detection device
JPH0734778U (en) * 1993-12-16 1995-06-27 協栄システム株式会社 Selectable chopsticks

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5551341A (en) * 1978-10-09 1980-04-15 Daiwa Can Co Ltd Intra-can surface test method
JPS55149830A (en) * 1979-05-11 1980-11-21 Nippon Seiko Kk Inspection apparatus for appearance of spherical body

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5551341A (en) * 1978-10-09 1980-04-15 Daiwa Can Co Ltd Intra-can surface test method
JPS55149830A (en) * 1979-05-11 1980-11-21 Nippon Seiko Kk Inspection apparatus for appearance of spherical body

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6029606A (en) * 1983-07-28 1985-02-15 Shinko Electric Co Ltd Attitude discriminating method of parts
JPS6121918U (en) * 1984-07-16 1986-02-08 株式会社明電舎 Case seam detection device
JPH0734778U (en) * 1993-12-16 1995-06-27 協栄システム株式会社 Selectable chopsticks

Also Published As

Publication number Publication date
JPS6355655B2 (en) 1988-11-04

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