| 小波变换在电磁流量信号处理中的应用 |
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| 引用本文： | 张晶晶,刘铁军.小波变换在电磁流量信号处理中的应用[J].自动化仪表,2012,33(1):21-23. |
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| 作者姓名： | 张晶晶 刘铁军 |
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| 作者单位： | 中国计量学院计量测试工程学院,浙江杭州,310018 |
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| 基金项目： | 浙江省重点科技创新团队基金资助项目 |
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| 摘 要： | 为有效抑制电磁流量计测量过程中产生的干扰,提高测量的精确度和稳定性,提出了基于Haar小波的软件滤波方法。该方法基于小波消噪原理,对强噪声干扰下的电磁流量信号进行了分析,并应用Matlab中的小波工具箱对所提出的Haar小波滤波方法进行了仿真研究。试验结果表明,这种方法能较好地抑制电磁流量信号中的各种噪声干扰,从而提高电磁流量计的测量精度。
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| 关 键 词： | 电磁流量计 传感信号 噪声 Haar小波 滤波 Matlab仿真 |
Application of Wavelet Transform in Signal Processing for Electromagnetic Flow Measurement |
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| Zhang Jingjing Liu Tiejun.Application of Wavelet Transform in Signal Processing for Electromagnetic Flow Measurement[J].Process Automation Instrumentation,2012,33(1):21-23. |
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| Authors: | Zhang Jingjing Liu Tiejun |
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| Affiliation: | Zhang Jingjing Liu Tiejun |
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| Abstract: | To effectively restrain the interference in electromagnetic flow measurement and enhance the accuracy and stability of the measurement,the software filtering method based on Haar wavelet is proposed.In accordance with the wavelet de-noising principle of wavelet,the signals of electromagnetic flow measurement under heavy noising interference are analyzed by this method.By adopting the wavelet tool box of Matlab,the Haar wavelet filtering method is researched by simulation.The experimental results show that this method well eliminates various noising interferences in electromagnetic flow measurement and enhances the measurement accuracy of electromagnetic flowmeter. |
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| Keywords: | Electromagnetic flowmeter Sensing signal Noise Haar wavelet Filtering Matlab simulation |
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