Velocity dependent characteristics of modulated ultrasonic signal in gas flow

Author

Niemann, Mathias ; Hans, Volker

Author_Institution

Inst. of Meas. & Control, Essen Univ., Germany

Volume

1

fYear

2001

fDate

21-23 May 2001

Firstpage

554

Abstract

Natural variations of pressure, density and velocity occuring in streaming fluid modulated ultrasonic signals. The characteristics of modulated ultrasonic signal in gas flow are strongly dependent on velocity. This paper describes a way to find a velocity dependent characteristic quality detected in the modulated signal and to determine the flow rate on the basis of signal analysis of only one ultrasonic barrier

Keywords

Hilbert transforms; acoustic convolution; acoustic correlation; demodulation; discrete Fourier transforms; flow measurement; flowmeters; signal sampling; ultrasonic applications; ultrasonic measurement; Hilbert transform; cross-correlation flowmeter; demodulation; discrete convolution; flow rate; gas flow measurement; inverse DFT; modulated ultrasonic signals; normal distribution plot; single ultrasonic barrier; streaming fluid; turbulence; undersampling; velocity dependent characteristics; Demodulation; Fluid flow; Fluid flow measurement; Frequency; Sampling methods; Signal analysis; Time measurement; Ultrasonic imaging; Ultrasonic transducers; Ultrasonic variables measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE

Conference_Location

Budapest

ISSN

1091-5281

Print_ISBN

0-7803-6646-8

Type

conf

DOI

10.1109/IMTC.2001.928880

Filename

928880