JPS5664650A - Fault inspection system - Google Patents

Fault inspection system

Info

Publication number
JPS5664650A
JPS5664650A JP14076579A JP14076579A JPS5664650A JP S5664650 A JPS5664650 A JP S5664650A JP 14076579 A JP14076579 A JP 14076579A JP 14076579 A JP14076579 A JP 14076579A JP S5664650 A JPS5664650 A JP S5664650A
Authority
JP
Japan
Prior art keywords
signal
output
circuit
signals
nand
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.)
Pending
Application number
JP14076579A
Other languages
Japanese (ja)
Inventor
Masahiro Kishi
Yasukazu Sano
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
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 filed Critical Fuji Electric Co Ltd
Priority to JP14076579A priority Critical patent/JPS5664650A/en
Publication of JPS5664650A publication Critical patent/JPS5664650A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

PURPOSE:To enable to detect all faults on the object to be inspected with high accuracy by a method wherein a multilevel fixed level binary circuit is added by a floating level binary system circuit. CONSTITUTION:In case faults exist on an object to be inspected, an image pickup signal from an image pickup system 7 becomes a signal a in an amplifier 9, enters a delay unit 13 and is output from the unit 13 as an b signal. An attenuator 15 outputs a C signal and an attenuator 17 outputs a d signal. On this account, a comparator 19, a binary signal f is obtained. The NAND conditional signals j, k of the aforementioned binary signals e, f and the output signals h, i of flipflop 21, 23 are as shown in (H), and (I) and further, the output j of a NAND circuit 25 contains two pulses corresponding to faulty signals S5, S7 and the output k of a NAND circuit 27 contains two pulses corresponding to faulty signals S5, S6. Whereas, faulty signals are not detected in a multilevel fixed level system inspection circuit 31 and the NAND conditional signal of the output m of a NOT circuit 33 and the output j, k of NAND circuits 25, 26 is an n. In this way, discrimination of fault is performed.
JP14076579A 1979-10-31 1979-10-31 Fault inspection system Pending JPS5664650A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14076579A JPS5664650A (en) 1979-10-31 1979-10-31 Fault inspection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14076579A JPS5664650A (en) 1979-10-31 1979-10-31 Fault inspection system

Publications (1)

Publication Number Publication Date
JPS5664650A true JPS5664650A (en) 1981-06-01

Family

ID=15276215

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14076579A Pending JPS5664650A (en) 1979-10-31 1979-10-31 Fault inspection system

Country Status (1)

Country Link
JP (1) JPS5664650A (en)

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