数字滤波器在实时滤除心电干扰中的设计与应用

A Design and Application of Digital Filter in Real-time Filtrating the Disturbance from the Electrocardiogram(ECG) Signal

在医疗电子中的心电(ECG)监护仪的设计中,针对心电信号的特殊信号和干扰频率范围,进行了分析,并且设计了一个基于零极点对消的简单整系数滤波器,该滤波器具有严格线性相位,稳定性能好,利用DSP汇编语言进行算法的实现,提高了计算速度,有效地滤除了干扰。

In the medical electronics instrument of electrocardiogram （ECG） monitor design , the range of the frequency of the disturbance was analyzed , and a filter based on pole-zero elimination was designed.The filter has a good linear phase character and good stability.The arithmetic was programmed with assemble language of DSP, speed of the operation was accelerated and the result is satisfactory.