FI56452C - Detektor foer detektering av fel i en roerlig yta - Google Patents
Detektor foer detektering av fel i en roerlig yta Download PDFInfo
- Publication number
- FI56452C FI56452C FI3397/72A FI339772A FI56452C FI 56452 C FI56452 C FI 56452C FI 3397/72 A FI3397/72 A FI 3397/72A FI 339772 A FI339772 A FI 339772A FI 56452 C FI56452 C FI 56452C
- Authority
- FI
- Finland
- Prior art keywords
- pulse
- pulse generator
- signal
- edge
- web
- Prior art date
Links
- 230000005855 radiation Effects 0.000 claims description 9
- 230000001960 triggered effect Effects 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000010408 sweeping Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 22
- 230000007547 defect Effects 0.000 description 8
- 238000001514 detection method Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000003708 edge detection Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/34—Paper
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Textile Engineering (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Optical Recording Or Reproduction (AREA)
- Length Measuring Devices By Optical Means (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5562671A GB1366369A (en) | 1971-11-30 | 1971-11-30 | Detection of faults on surfaces |
| GB5562671 | 1971-11-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FI56452B FI56452B (fi) | 1979-09-28 |
| FI56452C true FI56452C (fi) | 1980-01-10 |
Family
ID=10474428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI3397/72A FI56452C (fi) | 1971-11-30 | 1972-11-30 | Detektor foer detektering av fel i en roerlig yta |
Country Status (5)
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51113783A (en) * | 1975-03-31 | 1976-10-07 | Asahi Chem Ind Co Ltd | Defects detector of nonwoven fabric |
| US4247204A (en) * | 1979-02-26 | 1981-01-27 | Intec Corporation | Method and apparatus for a web edge tracking flaw detection system |
| JPS57157622A (en) * | 1981-03-24 | 1982-09-29 | Hitachi Denshi Ltd | Saw tooth wave generating circuit |
| SE456532B (sv) * | 1985-10-18 | 1988-10-10 | Asea Ab | Arrangemang for ytavsokning av ett provobjekt |
-
1972
- 1972-11-21 NO NO4252/72A patent/NO136430C/no unknown
- 1972-11-27 IT IT54300/72A patent/IT973745B/it active
- 1972-11-29 SE SE7215579A patent/SE389916B/xx unknown
- 1972-11-30 JP JP12029572A patent/JPS5518858B2/ja not_active Expired
- 1972-11-30 FI FI3397/72A patent/FI56452C/fi active
Also Published As
| Publication number | Publication date |
|---|---|
| FI56452B (fi) | 1979-09-28 |
| NO136430C (no) | 1977-08-31 |
| JPS4864983A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1973-09-07 |
| NO136430B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1977-05-23 |
| SE389916B (sv) | 1976-11-22 |
| IT973745B (it) | 1974-06-10 |
| JPS5518858B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1980-05-22 |
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