6 March 2015 Investigating of precision measurement on ultrasonic flow
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Proceedings Volume 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation; 94464F (2015) https://doi.org/10.1117/12.2181965
Event: International Symposium on Precision Engineering Measurement and Instrumentation, 2014, Changsha/Zhangjiajie, China
Abstract
The flow rate is calculated via ultrasonic flow meter (UFM), which is through measuring the difference of time transmitting flow between flow direction and reverse direction. This paper describes the uncertainty analysis for the method of time difference which is commonly used in ultrasonic flow measurement, and the analysis of error source of uncertainty components as well as the general method of elimination. Based on the technique of pseudo random sequence, this paper presents a precise time difference method based on digital correlation technology, and its principle, realization way and uncertainty evaluation are introduced. On the DSP and FPGA system platform, an ultrasonic flow meter scheme based on the digital correlation technology is suggested.
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Fangliang Jiang, Fangliang Jiang, Qizheng Ji, Qizheng Ji, Dongwei Zhai, Dongwei Zhai, Yibo Dong, Yibo Dong, Chun Dong, Chun Dong, } "Investigating of precision measurement on ultrasonic flow", Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 94464F (6 March 2015); doi: 10.1117/12.2181965; https://doi.org/10.1117/12.2181965
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