| Abstract: | An original non contact measurement method using multiple line structured laser sensors is introduced for seamless steel pipe straightness error is in this paper. An arc appears on the surface of the measured seamless steel pipe against a line structured laser source. After the image of the arc is accepted by a CCD camera, the coordinates of the center of the pipe cross section circle containing the arc can be worked out through a certain algorithm. Similarly, multiple line structured laser sensors are equipped parallel to the pipe. The straightness error of the seamless steel pipe, therefore, can be inferred from the coordinates of multiple cross section centers obtained from every line structured laser sensor. |
