MEASURING DEVICE OF PLANE TO BE MEASURED UNDER ENVIRONMENT OF SCATTERED SUBSTANCE

摘要

PURPOSE:To measure the shape of a plane to be measured without being affected with scattered substance, by processing picture signals obtained from lines to be measured on a measured plane with scanning of optical beam, after gas is jetted in the environment of scattered substance from a gas jet device. CONSTITUTION:A magnet valve 20b is opened by a controller 30, gas in a gas holder 20a is jetted in a blast furnace and the density of dust is decreased. Then, a laser beam from a laser light source 16a is scanned on a line 14 to be measured on a furnace charge plane 12 via a beam scanner 16c and the result is picked up with a TV camera 18. The picture signal is processed at a signal processing circuit 22, two-dimensional coordinates (H,V) of the line 14 are detected at a position detection circuit 24, three-dimensional coordintes are obtained at a microcomputer 26 and displayed on a display 28. Since the scattered substance on the picked optical path is swept out with a jet device, the shape of the plane 12 can be measured without being affected with the scattered substance.