| 张珂1,2 杜民1,2△ 陈旭海1,2.基于DSP 与FPAA 的电化学信号滤波器[J].,2011,11(1):134-137 |
| 基于DSP 与FPAA 的电化学信号滤波器 |
| Filter for Electrochemical Signal Based on DSP and FPAA |
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| DOI： |
| 中文关键词: 电化学 DSP FIR 滤波 FPAA |
| 英文关键词: Electrochemical DSP FIR filter FPAA |
| 基金项目:国家"863 计划" 项目(2008AA02Z433 , 2006AA02Z4Z1)，国际合作计划项目(2009DFA32050)，
福建省科技厅重点项目(2008J1005)资助 |
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| 中文摘要: |
| 目的：研究对自主研发的DNA 电化学分析仪所采集电化学信号的噪声的滤除方法。方法：根据电化学噪声信号的特征及其
频率分布范围，采用由现场可编程模拟阵列（FPAA）实现的有高阶低通滤波器和基于DSP 实现的FIR 数字滤波器相结合的方式，
对混合在电化学信号中的高频噪声信号进行滤除。结果：对滤波结果进行分析，频率在100HZ 以上的噪声信号基本滤除。结论：
FPAA 与DSP 芯片的结合构成了一个稳定性高，线性相位特性好，实时性强的高效滤波器。 |
| 英文摘要: |
| Objective: To investigate the filter method for electrochemical signal from self-developed DNA electrochemical
analyzer. Methods: According to the characteristics and the frequency distribution of Electrochemical noise signal, with the combination
of second-order low-pass active filter module implemented by Field Programmable Analog Array (FPAA) and FIR digital filter module
that achieved by DSPTMS320F2806, filter out the high frequency noise signal that mixed in the electrochemical signal. Results: Through
the analysis of the results of the filter, the noise with the frequency above 100 HZ was almost filter out completely. Conclusion: A filter
with high stability, fine linear phase characteristic and real time characteristics was formed with the combination of FPAA and DSP. |
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