基于ICA的胎儿心电提取系统  

Fetal ECG Extracting System Based on ICA

作　　者：杨少鹏[1] 吴小培[1] 张磊[1] 

机构地区：[1]安徽大学计算智能与信号处理教育部重点实验室,合肥230039

出　　处：《计算机系统应用》2011年第9期22-26,共5页Computer Systems & Applications

基　　金：安徽省教育厅自然科学基金(KJ2009A002Z);博士点基金(200803570002)

摘　　要：设计并实现了一种基于母体腹部表皮电极的胎儿心电提取系统。系统由硬件采集电路和分析软件两部分组成。硬件模块包含8路心电放大器(可扩展)、模拟滤波器和A/D转换电路;软件模块包含多通道数据采集和存储控制、数字滤波、ICA提取算法以及输入、输出波形的实时显示和回放等子模块。通过临床数据和实测仿真数据验证,本系统能有效地从母体心电中分离出胎儿心电,相应的软、硬件模块也均能够满足设计要求。实验表明,设计的胎儿心电系统具有较高的临床价值,同时也进一步验证了ICA算法应用于胎儿心电获取的可行性。最后,说明了本系统与相关系统对比具有的优势,并且提出了系统的优化方向和应用前景。In this paper, the design and implementation of a fetal electrocardiogram （ECG） extraction system based on surface electrode placing on maternal abdominal region is introduced. The system consists of an acquisition circuit and ECG analysis software. The hardware module includes eight channels ECG amplifiers （extensible）, analog filter and A/D circuit. The sol,rare module contains multi-channel data acquisition and access control, digital filter, Independent Component Analysis （ICA） algorithm and real-time display ofI/O waveform, etc. The clinical data and actual simulation data prove that this system can effectively extract fetal ECG from maternal ECC, and both the modules are able to satisfy the design requirements. The experiments demonstrate that the fetal ECG system introduced in this paper has high clinical value; further, it testifies the feasibility of ICA algorithms applied to fetal ECG extraction. In the end, it explains the advantages of this system over the relevant systems, and proposse updating direction and application prospects of the system.

关 键 词：胎儿心电提取 扩展Infomax算法 采集电路 系统实现 

分 类 号：R714.5[医药卫生—妇产科学] TN911.7[医药卫生—临床医学]