PURPOSE: To enable the perfect unmanned monitor by beforehand coloring the side faces of a dummy bar and a hook for lifting up the dummy bar with the specific and taking the picture of a cut-off part of the dummy bar from the obliquely upper part with a color telecamera.
CONSTITUTION: Before the dummy bar 2 is inserted, a blue series color is beforehand coated on the front face of the hook 1 for lifting up the dummy bar, a trunnion 3 of the dummy bar and the side faces of the dummy bar. The picture of these areas are taken with the telecamera 4 and the photographed picture is converted into a digital picture signal obtd. by dividing one picture into divided sections of a red component signal, green component signal and blue component signal by an A/d converter. Successively, it is confirmed by setting a mask on the picture that the hook 1 is descended to the normal position, and the hooking of the end part of the dummy bar is monitored, and by the movement of the trunnion 3 in the mask, the condition of hooking is discriminated. Successively, the parallelly moving velocity monitor of the casting velocity and the lift-up velocity of the dummy bar is executed, and the mask is arranged to the lift-up part in the picture taken with the camera and the abnormality in the parallelly moving velocity is discriminated from the projection value in the horizontal direction of the picture in the blue coating in the mask.
NAKAJIMA YUJI
YAMAMOTO TAKANORI
SHIMOKASA TOMOHARU
ITO TOMOHIRO
TOMITA KAZUYUKI
KOMATSU SATOSHI
TATSUGI TERUHISA
FUJITSU LTD