Title:
METHOD AND DEVICE FOR DETECTING DEFECTS
Document Type and Number:
Japanese Patent JPS5451582
Kind Code:
A
Abstract:
This apparatus comprises a device for illuminating in a permanent manner a zone in which the band travels, a television camera having a high luminous sensitivity and a low remanence controlled for exposure during constant periods of time which are short relative to the speed of travel of the band with a frequency of recurrence which is substantially equal to the speed of the band divided by the length of said zone in the direction of travel of the band. In this way, said successive images detected constitute a substantially continuous representation of the band. An electronic circuit is provided for analysing the images received by the camera.
Inventors:
BERUNARUDO DOKABUE
RUNE DEYUBUURU
JIYATSUKU KESUTEIEERU
JIYATSUKU PINAARU
RUNE DEYUBUURU
JIYATSUKU KESUTEIEERU
JIYATSUKU PINAARU
Application Number:
JP11161978A
Publication Date:
April 23, 1979
Filing Date:
September 11, 1978
Export Citation:
Assignee:
USINOR
International Classes:
G01N21/89; G01N21/892; (IPC1-7): G01N21/32
Domestic Patent References:
| JPS5223391A | 1977-02-22 | |||
| JPS5140975A | 1976-04-06 |