| 基于小波分析的涡街信号去噪算法在DSP中的实现 |
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| 引用本文： | 刘红艳,石红瑞. 基于小波分析的涡街信号去噪算法在DSP中的实现[J]. 测控技术, 2008, 27(7) |
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| 作者姓名： | 刘红艳 石红瑞 |
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| 作者单位： | 东华大学信息科学与技术学院,上海,201620;东华大学信息科学与技术学院,上海,201620 |
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| 摘 要： | 以数字信号处理器(DSP)为开发平台,将小波变换应用于涡街流量计,采用小波阈值去噪对涡街流量计信号进行处理,并提出了一种改进的小波阈值选取方法.实验结果表明该算法对涡街信号提取和噪声去除效果良好,可扩大量程范围,提高涡街流量计的测量精度.而且,DSP的应用又保证了实时性.
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| 关 键 词： | 涡街流量计 小波变换 数字信号处理器(DSP) 阈值去噪 |
Implementation of Vortex Signal's Wavelet-Based Denoising Algorithm on DSP |
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| LIU Hong-yan,SHI Hong-rui. Implementation of Vortex Signal's Wavelet-Based Denoising Algorithm on DSP[J]. Measurement & Control Technology, 2008, 27(7) |
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| Authors: | LIU Hong-yan SHI Hong-rui |
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| Abstract: | The wavelet threshold filtering method is used to process vortex flowmeter signals based on digital signal processor(DSP) chip.And an improved threshold selection method is proposed.The experimental results show threshold filtering algorithm is effective to separate the vortex signal from noise,able to enlarge the measurement range and ensure the measuring accuracy.Additionally,the signals in real time are assured with DSP. |
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| Keywords: | vortex flowmeters wavelet transformation digital signal processors(DSP) threshold denoising |
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