基于MATLAB和IP核的心电信号数字滤波器的设计  

Design of the Digital Filter of EGC Based on MATLAB and IP

作　　者：倪维柱[1] 徐寅林[1] 吴华玉[1] 

机构地区：[1]南京师范大学物理科学与技术学院,江苏南京210097

出　　处：《南京师范大学学报（工程技术版）》2008年第1期30-33,共4页Journal of Nanjing Normal University(Engineering and Technology Edition)

基　　金：江苏省教育厅自然科学基金(2005102TSJB154)资助项目

摘　　要：传统的心电信号滤波功能一般是由模拟滤波器完成,但模拟滤波器存在较多的缺点(处理精度不高、速度不快、容易受到干扰以及适应差等),已越来越难以满足现代信号采集系统的要求.现提出了一种基于MATLAB和FPGA的数字滤波器的实现方案,能较好地克服上述模拟滤波器的缺点.该数字滤波器首先使用MATLAB和IP核相结合的方法生成代码,然后通过QuartusII软件把编译的程序下载到FPGA中以实现数字滤波器的软硬件设计.此方法使数字滤波器的设计变得非常简单和可靠.经试验,该数字滤波器在心电信号处理运用中满足设计要求.The conventional filtering function in the ECG signal processing is realized by analog filter. However, the analog filter can not meet the growing needs in the developing signal acquisition system because the analog filter has many disadvantages such as the limited precision and the low speed and so on. This paper presents a new solution for a digital filter in the ECG signal processing, which is based on the MATLAB and IP. The digital filter can conquer the disadvantages of analog filter. The code of digital filter is generated by combining MATLAB with IP,and then the programme of decoding and editing is downloaded into the FPGA by the software of QuartusII to realize the hardware and software design of the digital filter. Such a method makes a digital filter extraordinarily simple and reliable. Furthermore,the digital filter is testified to meet the requests of ECG instrument in practise.

关 键 词：MATLAB IP核 FPGA 数字滤波器 心电信号 

分 类 号：R312[医药卫生—基础医学] TP274.2[自动化与计算机技术—检测技术与自动化装置]