Title :
Performance evaluation of algorithms for SAW-based temperature measurement
Author :
Schuster, Stefan ; Scheiblhofer, Stefan ; Reindl, Leonhard ; Stelzer, Andreas
Author_Institution :
Inst. for Commun. & Inf. Eng., Johannes Kepler Univ., Linz, Austria
fDate :
6/1/2006 12:00:00 AM
Abstract :
Whenever harsh environmental conditions such as high temperatures, accelerations, radiation, etc., prohibit usage of standard temperature sensors, surface acoustic wave-based temperature sensors are the first choice for highly reliable wireless temperature measurement. Interrogation of these sensors is often based on frequency modulated or frequency stepped continuous wave-based radars (FMCW/FSCW). We investigate known algorithms regarding their achievable temperature accuracy and their applicability in practice. Furthermore, some general rules of thumb for FMCW/FSCW radar-based range estimation by means of the Cramer-Rao lower bound (CRLB) for frequency and phase estimation are provided. The theoretical results are verified on both simulated and measured data.
Keywords :
CW radar; FM radar; frequency estimation; phase estimation; surface acoustic wave sensors; temperature measurement; temperature sensors; Cramer-Rao lower bound; frequency estimation; frequency modulated continuous wave radar; frequency stepped continuous wave radar; performance evaluation; phase estimation; range estimation; surface acoustic wave temperature sensors; temperature measurement; Acceleration; Acoustic sensors; Frequency estimation; Measurement standards; Phase estimation; Power capacitors; Surface acoustic waves; Temperature measurement; Temperature sensors; Wireless sensor networks; Acoustics; Algorithms; Computer Simulation; Computer-Aided Design; Equipment Design; Equipment Failure Analysis; Models, Theoretical; Thermography; Transducers;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2006.1642516
