10.5162/SENSOREN2019/5.3.1
D. Exel
B. Zagar
S. Schuster
S. Scheiblhofer
D. Zankl
V. Ganglberger
J. Reisinger
5.3.1 Key design elements of a radio-acoustic-sounding system for industrial applications
AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf
2019
Radio-Acoustic-Sounding System
RASS
Doppler radar
AMA Assocation for Sensors and Measurement, Sophie-Charlotten-Str. 15, 14059 Berlin
Informationstechnische Gesellschaft im VDE (ITG), Frankfurt
VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik (GMA), Düsseldorf
eng
ConferencePaper
978-3-9819376-0-2
6 Pages
822 KB
application/pdf
This article discusses compact radio-acoustic-sounding systems (RASSs) for industrial applications. The electromagnetic-acoustic interaction enables to measure temperatures of gases without contact and spatially resolved. For this purpose, the speed of a modulated sound pulse, travelling through the gas with a velocity proportional to the temperature, is determined with a Doppler radar. The optimum sound pulse´s in terms of its frequency is discussed. The so called Bragg condition is essential to obtain sufficient receive power. The two most important conditions for an optimal Bragg reflection are the tuning of the wavelengths and an optimal collocation of the sources. These conditions are calculated numerically and verified with real-world measurement data. One purpose of this paper is to summarize physical effects that are key elements to the function of the RASS.