Method, system and equipment for detecting winding angle of pinch roll

The invention provides a detection method and a detection system for a coiling angle of a pinch roll, and belongs to the field of steel processing and manufacturing. The invention provides a method for detecting the coiling angle of a pinch roll, and the method comprises the steps: respectively determining a first reference point located at the center of the end face of a steel coil in a pre-uncoiling image and a second reference point which is perpendicular to the first reference point in the vertical direction and is located on the pinch roll based on the pre-uncoiling image containing the steel coil and an uncoiling machine; extracting steel coil contour feature data based on the pre-uncoiling image, and determining a strip head endpoint according to the steel coil contour feature data; fitting the first reference point, the second reference point and the end point of the belt head, and outputting the winding angle of the pinch roll. According to the detection method for the winding angle of the pinch roll