New method to measure pulp flow velocity based on time-frequency analysis of pulp consistency noise

Author

Zhou, Qiang ; Han, Jiuqiang

Author_Institution

Sch. of Electron. & Inf. Eng., Xian Jiaotong Univ., Xian

fYear

2008

fDate

21-24 Sept. 2008

Firstpage

125

Lastpage

130

Abstract

A novel method of measuring flow velocity is put forward, which need no equipment or hardware. Utilizing the Doppler-effect that pulp flow velocity (PFV) causes effect upon pulp consistency noise signal, we can determine PFV carrying out time-frequency analysis of the noise of pulp consistency signal on the basis of pulp consistency measurement. The detailed calculating steps are proposed, firstly, noise signal is separated from pulp consistency signal, then it is analyzed by means of the short time power spectrum (STPS) or wavelet transform (WT), finally the PFV can be obtained according to the scale change of STPS or the period change of WT. The corresponding tests show that the measurement method is feasible with high precision.

Keywords

Doppler effect; flow measurement; paper industry; time-frequency analysis; velocity measurement; Doppler-effect; pulp consistency measurement; pulp consistency noise signal; pulp flow velocity measurement; short time power spectrum; time-frequency analysis; wavelet transform; Fluid flow measurement; Hardware; Noise measurement; Power measurement; Signal analysis; Testing; Time frequency analysis; Velocity measurement; Wavelet analysis; Wavelet transforms; correlation meter; pulp consistency noise; pulp flow velocity; short time power spectrum;

fLanguage

English

Publisher

ieee

Conference_Titel

Cybernetics and Intelligent Systems, 2008 IEEE Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-1673-8

Electronic_ISBN

978-1-4244-1674-5

Type

conf

DOI

10.1109/ICCIS.2008.4670822

Filename

4670822