基于归一化格型陷波器的科里奥利质量流量计信号处理方法

应用科学学报 ›› 2005, Vol. 23 ›› Issue (2): 160-164.

基于归一化格型陷波器的科里奥利质量流量计信号处理方法

倪伟, 徐科军

合肥工业大学自动化研究所, 安徽合肥 230009

收稿日期:2003-10-27 修回日期:2003-12-15 出版日期:2005-03-31 发布日期:2005-03-31
作者简介:倪伟(1977-),男,安徽肥东人,博士生,E-mail:dsplab@hfut.edu.cn;徐科军(1956-),男,江苏无锡人,研究员,博导.

A Signal Processing Method for the Coriolis Mass Flowmeter Based on a Normalized Lattice Notch Filter

NI Wei, XU Ke-jun

Institute of Automation, Hefei University of Technology, Hefei 230009, China

Received:2003-10-27 Revised:2003-12-15 Online:2005-03-31 Published:2005-03-31

摘要/Abstract

摘要： 采用自适应归一化格型陷波器对科氏流量传感器的输出信号进行处理,以求得其频率;再采用自适应谱线增强器从含有噪声的数据中提取出所需要的信号;然后采用滑动Goertzel算法计算两路信号之间的实时相位差,并通过频率和相位差计算出时间差,求得质量流量.仿真结果表明本文所研究的方法是有效的.

关键词: 科里奥利质量流量计, 滑动Goertzel算法, 归一化格型陷波器

Abstract: An adaptive normalized notch filter is applied to filter the sensor output signals of a Coriolis mass flowmeter and calculate its frequency.An adaptive line enhancer based on the above-mentioned notch filter extracts the required signals from the noisy data.The sliding Goertzel algorithm is used to calculate the real time phase difference between two signals of this kind.With the frequency and phase difference obtained, the time interval of the two signals and the mass flowrate are derived.The simulation results show that the algorithms studied in this paper are efficient.

Key words: Coriolis mass flowmeter, normalized lattice notch filter, sliding Goertzel algorithm

中图分类号:

TH814

倪伟, 徐科军. 基于归一化格型陷波器的科里奥利质量流量计信号处理方法[J]. 应用科学学报, 2005, 23(2): 160-164.

NI Wei, XU Ke-jun. A Signal Processing Method for the Coriolis Mass Flowmeter Based on a Normalized Lattice Notch Filter[J]. Journal of Applied Sciences, 2005, 23(2): 160-164.