A DSP-based signal processing method and system for CMF

• Published in: Measurement : journal of the International Measurement Confederation Vol. 46; no. 7; pp. 2184 - 2192
• Main Authors: Hou, Qi-Li, Xu, Ke-Jun, Fang, Min, Xiong, Wen-Jun, Liu, Cui
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.08.2013
• Subjects: accuracy; Adaptive algorithms; Adaptive lattice notch filter; algorithms; Bandpass filters; Calibration; Coriolis force; Coriolis mass flowmeter; Digital; Digital signal processing; DSP; DTFT algorithm considering negative frequency; equipment performance; filters; mass flow; measurement; measuring devices; Notch filters; Signal processing; Signal processing method; systems engineering; water flow; Signal processing method; DSP; Coriolis mass flowmeter; Adaptive lattice notch filter; DTFT algorithm considering negative frequency
• ISSN: 0263-2241; 1873-412X
• DOI: 10.1016/j.measurement.2013.03.010

•A complete signal processing method is proposed and implemented for CMF.•The digital transmitter is developed with DSP chip to realize the algorithms.•Some effective measures are taken to ensure the real-time and high accuracy.•Experimental results show that the method and transmitter are effective. A set of digital signal processing method is formed by combining a digital band-pass filter, an adaptive lattice notch filter and the DTFT algorithm considering negative frequency contribution for processing the signals of Coriolis mass flowmeter. A digital Coriolis mass flow transmitter is developed with a DSP chip to realize the signal processing approach. Some effective measures are proposed to ensure high accuracy and real time of this approach in the implementation. Simulations, electrical signal tests and water flowrate calibrations are conducted to validate the performances of the method and the system.