基于Linux的心电监测系统设计与算法研究

Design and Algorithms Study of ECG Monitoring System Based on Linux

面向社区和家庭医疗监护,以便满足人们检测心电方便、省时的需求。以便携、低功耗为目标,采用HKD-10B心电采集模块和S3C2440设计了无线心电监测系统,包括数据采集、数据处理、无线传输等模块;基于Linux2.6.32操作系统平台开发了终端软件。运用形态学滤波器对ECG信号作预处理,并提出了采用动态差分阈值和R-R间期自适应结合检测R波的方法,该方法克服了传统差分阈值法中存在漏检和多检问题,具有自检功能。最后通过实验,表明用户可通过该心电监测系统能准确获取ECG特征,且能在前端LCD上实时显示心电图。

A portable and low power consumption wireless ECG monitoring system,which using HKD-10B ECG acquisition module and S3C2440 chip is developed for community and family facilitate the ECG detection.The wireless ECG monitoring system is composed of data acquisition,data processing,and wireless transmission module,and based on Linux2.6.32 to developed terminal software.ECG signal is preprocessed by morphological filter.And then a new algorithm method of R-wave detection is proposed by combining dynamic differential threshold and RR adaptive interval method.The undetected and multi -detection situations in traditional differential threshold method can be overcame by the new method with self-checking function.The experiments show that users can acquire accurate ECG characteristics,and which can be real-time displayed on front LCD.