Title :
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
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;
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
DOI :
10.1109/ICCIS.2008.4670822
