Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1984-03-29
1985-03-26
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356431, G01N 2189
Patent
active
045075646
ABSTRACT:
Disclosed is a surface defect detecting apparatus comprising a scanning device for scanning a rolled steel plate rolled and transferred by a pair of rolls at a fixed period over its full width to successively produce signals representing a surface condition of the rolled steel plate over the full width thereof, and a defect signal generating circuit for producing output signals representing the presence of a surface defect on the surface of the rolled steel plate in accordance with output signals from the scanning device. The surface defect detecting apparatus is further provided with a pulse generator for producing pulses every rotation of the roll, a memory, a display unit, and a control system which responds to output pulses from the pulse generator to sequentially write defect signals generated from the defect signal generation circuit into the memory, reads out the data from the memory after the memory is full up with the data, and causes the display unit to display on one line the data obtained every rotation of the roller.
REFERENCES:
patent: 4134684 (1979-01-01), Jette
patent: 4223346 (1980-09-01), Neiheisel et al.
patent: 4240110 (1980-12-01), Henry
patent: 4327375 (1982-04-01), Leclerc
Mayes et al., "High-Speed Image Capture for Mechanical Analysis", IBM Technical Disclosure Bulletin, vol. 16, No. 7, Dec. 1973, pp. 2169-2171.
Tokyo Shibaura Denki Kabushiki Kaisha
Westin Edward P.
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