| 摘要 |
Method and apparatus for detecting the edge angle of a molded board of plaster to monitor it continuously and reliably. An edge angle detector comprises a light source (2), a CCD camera (3), andan image processor (31), and attached to a continuous board-manufacturing machine to detect the edge angle alpha of a molded boardof plaster (W). The light source is opposed to the side edge face(16) of the molded board of plaster to irradiate the side edge face continuously. The camera is arranged above the side edge face to receive the reflection from the edge and takes the images of the edge (15) continuously. The image processor detects the edge angle by measuring an apparent edge width E. The edge detector further includes a position detector (4) for measuring the distance to the edge, and a device (5) for moving the camera to a desired position depending on the results of detection by the position detector. <IMAGE> |
