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Proceedings Paper

Investigating of precision measurement on ultrasonic flow
Author(s): Fangliang Jiang; Qizheng Ji; Dongwei Zhai; Yibo Dong; Chun Dong
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Paper 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.

Paper Details

Date Published: 6 March 2015
PDF: 9 pages
Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 94464F (6 March 2015); doi: 10.1117/12.2181965
Show Author Affiliations
Fangliang Jiang, Beijing Orient Institute of Measurement and Test (China)
Qizheng Ji, Beijing Orient Institute of Measurement and Test (China)
Dongwei Zhai, Beijing Orient Institute of Measurement and Test (China)
Yibo Dong, Beijing Orient Institute of Measurement and Test (China)
Chun Dong, Beijing Orient Institute of Measurement and Test (China)


Published in SPIE Proceedings Vol. 9446:
Ninth International Symposium on Precision Engineering Measurement and Instrumentation
Junning Cui; Jiubin Tan; Xianfang Wen, Editor(s)

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