JPS5594104A - Optical surface detector - Google Patents
Optical surface detectorInfo
- Publication number
- JPS5594104A JPS5594104A JP272079A JP272079A JPS5594104A JP S5594104 A JPS5594104 A JP S5594104A JP 272079 A JP272079 A JP 272079A JP 272079 A JP272079 A JP 272079A JP S5594104 A JPS5594104 A JP S5594104A
- Authority
- JP
- Japan
- Prior art keywords
- slice level
- pulse
- noises
- comparator
- waveform
- 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
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
PURPOSE: To accomplish an accurate detection of test work even at the low speed specifying the slice level with respect to the moving speed thereof.
CONSTITUTION: The pulse produced from a pulse encoder connected to a wheel 6 rotating in contact with the test work 1 is converted with a D/A converter 8. Thereafter, it is applied to a comparator 9 to set the slice level almost in the middle between that to be produced when any flow is present on the surface thereof the that corresponding to noises. By this, the image 2' of a flaw is formed on a photosenser 4 through an optical system 3 and moves following the movement of the work, while the waveform 5' thereof is inputted into a comparator by way of a differential amplifier 5. When the waveform 5' is larger than the slice level, a pulse 9' is emmanated to actuate an alarm 11 through one shoot multivibrator 10. This eliminates malfunctioning otherwise caused by a level corresponding to noises.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP272079A JPS5594104A (en) | 1979-01-11 | 1979-01-11 | Optical surface detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP272079A JPS5594104A (en) | 1979-01-11 | 1979-01-11 | Optical surface detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5594104A true JPS5594104A (en) | 1980-07-17 |
Family
ID=11537136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP272079A Pending JPS5594104A (en) | 1979-01-11 | 1979-01-11 | Optical surface detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5594104A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59109808A (en) * | 1982-12-15 | 1984-06-25 | Sumitomo Electric Ind Ltd | Detector for ruggedness of surface of filamentous body |
JPS6344106U (en) * | 1986-09-06 | 1988-03-24 | ||
JPS63128203A (en) * | 1986-11-18 | 1988-05-31 | Nippon Steel Corp | Optical position measuring method for object |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5016959A (en) * | 1973-06-18 | 1975-02-22 |
-
1979
- 1979-01-11 JP JP272079A patent/JPS5594104A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5016959A (en) * | 1973-06-18 | 1975-02-22 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59109808A (en) * | 1982-12-15 | 1984-06-25 | Sumitomo Electric Ind Ltd | Detector for ruggedness of surface of filamentous body |
JPS6344106U (en) * | 1986-09-06 | 1988-03-24 | ||
JPS63128203A (en) * | 1986-11-18 | 1988-05-31 | Nippon Steel Corp | Optical position measuring method for object |
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