小波分析在超声传感器多相液位测量中的性能评价

2014 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings Pub Date : 2014-05-12 DOI:10.1109/I2MTC.2014.6860844

Karolie Nobre Dantas Grassi, R. Freire, J. Villanueva

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引用次数: 5

摘要

本文评价了小波分析在超声回波滤波中的性能，并将其应用于单罐多液位测量。提出了在此应用中使用的超声信号滤波的先前参考文献的修订。考虑介质的衰减和加性噪声的存在，建立了超声传感器和测量系统的仿真模型。使用了单母小波，并验证了信号检测所需的分解层数。仿真结果比较了不同信噪比下的测量不确定度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Evaluation of wavelet analysis performance in multiphase level measurement using ultrasonic sensors

This paper presents an evaluation of the performance of wavelet analysis in the filtering of ultrasonic echoes applied to the measurement of multiple levels of liquids in a single tank. A revision of previous references in the filtering of ultrasound signals used in this application is presented. A simulation model of ultrasonic sensors and the measurement system is developed, considering the attenuation of the mediums and the presence of additive noise. A single mother wavelet is used and the number of required levels of decomposition for signal detection is verified. Simulation results are presented with comparison of the measurement uncertainty achieved under different signal-to-noise ratios.

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2014 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings

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