摘要
在心电图信号的测量中，存在很强的噪声和干扰。这些干扰噪声往往与信号的频率相重叠。在有效地保存有用信号的情况下最大限度地抑制心电信号测量中噪声，历来就是技术上的一个难点。本文探讨了应用非线性的数学形态滤波到心电图机中并取得良好的效果。相比于常规的线性滤波器，数学形态滤波器不仅抑制能力很强，其计算也十分简单，十分适合于在基于计算功能有限的微处理器的心电图机中应用。
There are many kinds of strong interference in the ECG measuring. Their frequency bandwidths often overlap with that of ECG. It has been a big problem to remove these interference while keep as much useful ECG as possible for many years. The mathematical morphology is discussed in this paper and it's application in ECG is also presented. Compared with the normal linear filters, this non-linear filter has excellent capability in the removal of some kinds of common but important interference. Furthermore, much less calculation is needed in the mathematical morphology. Undoubtedly mathematical morphology is perfectly fit for the application in the μP based ECG.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
1999年第4期335-339,344,共6页
Chinese Journal of Scientific Instrument
关键词
数学形态滤波器
心电图
噪声
心电图机
Mathematical morphology filter ECG (Electrocardiogram) Noise
