凸度仪系统中确定钢板边缘算法的研究

Research on Computation for Cross Section's Edge Positions in X-ray Instantaneous Profile Gauge for Steel Strip

为了在双X射线源、双电离室阵列探测器构成的热轧钢板凸度仪系统中重建钢板横截面的厚度分布,必须对钢板横截面的两个边缘进行准确计算。本研究基于实际构建的凸度仪系统,应用X射线在物质中衰减的规律,对X射线在钢板边缘处的衰减进行准确建模,并利用对应于钢板边缘的探测器的输出信号,完成了钢板横截面边缘的准确计算。研究结果表明,利用该算法得到的钢板边缘正是钢板边缘的中点位置,边缘计算的算法准确。

In order to reconstruct the thickness distribution of the cross-section in the steel strip for the profile gauge using two X-ray sources and two arrays of gas-filled ion chambers,it＇s important to compute accurately the positions of the cross-section＇s edges first.Based on the practice profile gauge,the computation modeling of X-ray attenuation at the edges of the cross-section was achieved by using the principle of X-ray attenuation in materials.With the detectors＇ output and the modeling,the computation of the edges of the cross-section was completed.The result reveals that the computed edge is right the midpoint of the edge and the algorithm for edge computation is accuracy.