GB943559A - Apparatus for visually inspecting strip travelling at high speed - Google Patents

Apparatus for visually inspecting strip travelling at high speed

Info

Publication number
GB943559A
GB943559A GB17610/61A GB1761061A GB943559A GB 943559 A GB943559 A GB 943559A GB 17610/61 A GB17610/61 A GB 17610/61A GB 1761061 A GB1761061 A GB 1761061A GB 943559 A GB943559 A GB 943559A
Authority
GB
United Kingdom
Prior art keywords
strip
camera
high speed
lamps
operated
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.)
Expired
Application number
GB17610/61A
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.)
United States Steel Corp
Original Assignee
United States Steel Corp
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 United States Steel Corp filed Critical United States Steel Corp
Publication of GB943559A publication Critical patent/GB943559A/en
Expired 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
    • G01N21/91—Investigating the presence of flaws or contamination using penetration of dyes, e.g. fluorescent ink
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/188—Capturing isolated or intermittent images triggered by the occurrence of a predetermined event, e.g. an object reaching a predetermined position

Abstract

943,559. Television. UNITED STATES STEEL CORPORATION. May 15, 1961 [May 16, 1960], No. 17610/61. Heading H4F. Visual inspection of a metal strip 1 (Fig. 1), moving at high speed through a processing station (to detect flaws &c.) is effected by illuminating the strip momentarily by lamp 5 during the frame retrace period of a television camera 6 which is focused on a selected area of the strip and the image signals derived from which are reproduced as a picture on a viewing tube (not shown). Two lamps 5 (Figs. 2, 3) are preferably employed the light from which is directed against a diffusely reflecting screen 8 provided with a non-reflective area 11 the area under which on the strip is " viewed " by the camera 6 so that when the strip is highly reflecting the only light which reaches the camera is that due to surface imperfection &c. When the strip is not highly reflecting it may be illuminated directly (Fig. 4, not shown). The control circuit for the lamps 5 is conditioned (via the synchronizing signals of the system) so that flashing (of a duration of about 30 microseconds) occurs during frame retrace periods (1) when a manually controlled switch is operated; (2) at periodic intervals controlled by a frame pulse counting circuit; and (3) at spaced positions along the length of the strip controlled by counting pulses generated by a pulse type tachometer operated by the mechanism moving the strip operation in modes (2) or (3) being selectively determined by manual switch means (Fig. 7, not shown).
GB17610/61A 1960-05-16 1961-05-15 Apparatus for visually inspecting strip travelling at high speed Expired GB943559A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29364A US3111555A (en) 1960-05-16 1960-05-16 Apparatus for visually inspecting strip travelling at high speed

Publications (1)

Publication Number Publication Date
GB943559A true GB943559A (en) 1963-12-04

Family

ID=21848647

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17610/61A Expired GB943559A (en) 1960-05-16 1961-05-15 Apparatus for visually inspecting strip travelling at high speed

Country Status (3)

Country Link
US (1) US3111555A (en)
GB (1) GB943559A (en)
NL (1) NL264816A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2472747A1 (en) * 1979-12-29 1981-07-03 Hoesch Estel Werke Ag DEVICE FOR DETECTING FAULTS ON THE SURFACE OF A RAPIDLY MOVING BAND IN A ROLLER TRAIN
EP0471444A2 (en) * 1990-08-13 1992-02-19 Picker International, Inc. Video camera
WO1998005949A1 (en) * 1996-07-31 1998-02-12 Siemens Aktiengesellschaft Method and device for testing substrate coatings for delamination, in particular vacuum plasma sprayed coatings on gas turbine blades

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274486A (en) * 1963-03-01 1966-09-20 Leon M Gould Automatic synchronized stroboscope
GB1028718A (en) * 1964-03-06 1966-05-04 Victory Kidder Printing Machin Improvements in or relating to web register control means
US3458261A (en) * 1964-09-25 1969-07-29 Kollmorgen Corp Pulsed light photometric apparatus for measuring light characteristics of moving materials
US3453053A (en) * 1965-03-17 1969-07-01 Leesona Corp Electrical apparatus for detecting changes in the quality of a medium
US3419677A (en) * 1965-03-26 1968-12-31 John F Mccarthy Inc Apparatus for monitoring high speed processes
DE2222852A1 (en) * 1971-05-11 1973-12-13 Image Analysing Computers Ltd FIELD LIGHTING FOR IMAGE ANALYSIS
FR2402868A1 (en) * 1977-09-12 1979-04-06 Usinor METHOD AND APPARATUS FOR DETECTION OF SURFACE FAULTS ON A HIGH SPEED TRAVELING BELT
DE3481176D1 (en) * 1984-10-24 1990-03-08 Kawasaki Steel Co STEEL SHEARING SYSTEM.
US20050122422A1 (en) * 2003-12-08 2005-06-09 Kent Edward M. Video camera synchronized infrared strobe inspection system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648723A (en) * 1948-12-30 1953-08-11 Rca Corp Inspection system
US2798605A (en) * 1950-07-12 1957-07-09 Tele Tect Corp Electronic inspection apparatus
GB803843A (en) * 1956-02-27 1958-11-05 Dornier Gmbh Lindauer Apparatus for observing moving fabrics

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2472747A1 (en) * 1979-12-29 1981-07-03 Hoesch Estel Werke Ag DEVICE FOR DETECTING FAULTS ON THE SURFACE OF A RAPIDLY MOVING BAND IN A ROLLER TRAIN
EP0471444A2 (en) * 1990-08-13 1992-02-19 Picker International, Inc. Video camera
EP0471444A3 (en) * 1990-08-13 1992-04-29 Picker International, Inc. Video camera
WO1998005949A1 (en) * 1996-07-31 1998-02-12 Siemens Aktiengesellschaft Method and device for testing substrate coatings for delamination, in particular vacuum plasma sprayed coatings on gas turbine blades

Also Published As

Publication number Publication date
NL264816A (en)
US3111555A (en) 1963-11-19

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