基于热敏打印的心电曲线平滑算法的研究及实现

Research and Realization on Algorithm of Smothing ECG Curve Based on Thermal Print

针对心电图机处于高速走纸状态下,热敏打印曲线不平滑、不清晰等问题,通过增加相邻两个打印点间直线段的个数,加粗曲线,来达到平滑整条曲线的目的。采用二叉树结构自适应地搜索每次打印直线段的起始点和终止点。同时给出实现改进算法的硬件电路组成。实验证明,用改进算法打印出来的心电曲线清晰、平滑,阶越现象得到明显的改善。

we proposed an improved algorithm to smoothing the ECG curve printed by the Thermal Printer with high speeds by adding the amount of lines of neighboring two printed points, thickening the whole curves, which applied Binary Tree structure to search begin and end of each line adaptively. Hardware circuit was given to realize the algorithm, and the results show that curves were smoother.