| 基于FPGA的多通道心电信号实时滤波与压缩 |
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| 引用本文： | 张光普,陈日清,付轶帆,吴剑.基于FPGA的多通道心电信号实时滤波与压缩[J].传感器与微系统,2018(2):14-18,22. |
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| 作者姓名： | 张光普 陈日清 付轶帆 吴剑 |
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| 作者单位： | 清华大学深圳研究生院深圳市无损监测与微创医学技术重点实验室,广东深圳,518055 |
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| 基金项目： | 深圳市基础研究项目，清华大学深圳研究生院交叉科研基金 |
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| 摘 要： | 为了改善多通道心电(ECG)信号滤波的质量和保证数据传输速率,实现实时采集与处理,提出了一种基于现场可编程门阵列(FPGA)的ECG信号滤波和压缩处理方法.对AD采集的ECG信号进行FIR低通和四层Coif1小波滤波处理;由多级树集合分裂(SPIHT)模块进行压缩;将压缩数据经通用串行总线(USB)传入上位机.根据Modelsim仿真和Altera Arria V FPGA的实验结果表明:经过数字滤波与压缩,ECG信号的信噪比(SNR)可提升7.4 dB,数据压缩率可达13.4.方法可实现对64通道的ECG信号实时滤波和压缩处理.
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| 关 键 词： | 心电信号 现场可编程门阵列 小波变换 多级树集合分裂 压缩 electrocardiography(ECG)signal field programmable gate array(FPGA) wavelet transform(WT) SPIHT compression |
Multi-channel ECG signal real time filtering and compression based on FPGA |
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| ZHANG Guang-pu,CHEN Ri-qing,FU Yi-fan,WU Jian.Multi-channel ECG signal real time filtering and compression based on FPGA[J].Transducer and Microsystem Technology,2018(2):14-18,22. |
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| Authors: | ZHANG Guang-pu CHEN Ri-qing FU Yi-fan WU Jian |
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| Abstract: | In order to improve filtering quality of multi-channel electrocardiography(ECG)signals and guarantee data transmission rate,realize real time sampling and processing,design and propose an ECG filtering and compression method based on FPGA. ECG signals sampled by AD converter are processed by low pass FIR filtering and four-layer Coif1 wavelet transform filtering and compressed with set partitioning in hierarchical trees (SPIHT)module. Compressed data are delivered to upper PC through USB. The SNR of ECG signals after processing is increased by 7. 4 dB with compression rate up to 13. 4 based on Modelsim simulation and tests on Altera Arria V FPGA. This approach applies to 64 channels ECG signal for real time filtering and compression. |
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