MEASURING DEVICE FOR SECTIONAL PLATE THICKNESS AND SHAPE OF PLATE MATERIAL

摘要

PURPOSE:To measure a sectional shape of a plate material correctly and exactly, by arranging plural radiation detectors in the scanning direction, and shifting and synthesizing in respect of a time or a space, output signals from the radiation detectors by a radiant ray which has a transmitted the plate material. CONSTITUTION:A radiation beam 105 emitted from a radiation source 104 transmits a steel plate 103, and is made incident to plural radiation detectors 106 arranged in the scanning direction. Its output signals are sent to a signal processing circuit 107, are synthesized, and thickness of the steel plate 103 is measured. The radiation source 104 and the radiation detector 106 are scanned by a frame 101, transmission X-rays are detected like a time series, shifted signals are synthesized to one, and on the other hand, a statistical noise is averaged and reduced, and also a unit radiation beam can be made sharp enough, therefore, a sectional shape of the steel plate 103 is measured correctly and exactly.