Title :
Robust and accurate real-time estimation of sensors signal parameters by a DSP approach
Author :
Bertocco, Matteo ; Flammini, Alessandra ; Marioli, Daniele ; Taroni, Andrea
Author_Institution :
Dipt. di Elettronica e Inf., Padova Univ., Italy
fDate :
6/1/2000 12:00:00 AM
Abstract :
The paper presents a spectral method for robust and accurate real-time frequency estimation when a square wave affected by impulsive noise is considered. The method, tailored for signals coming from typical resonant sensors (frequency from 2 kHz to 22 kHz), has been implemented and tested using a floating-point digital signal processor (DSP) and a 16-bit analog-to-digital converter (ADC). It has been observed that there is a greater immunity to glitches with respect to the classic solution based on Constant Elapsed Time, while resolution (10-6) and measuring time (10 ms), are close to the ones of traditional high-cost laboratory instrumentation
Keywords :
digital signal processing chips; frequency estimation; real-time systems; signal processing equipment; spectral analysis; 16-bit analog-to-digital converter; 2 kHz to 22 kHz; 2 to 22 kHz; Constant Elapsed Time; DSP; floating-point digital signal processor; frequency estimation; frequency measurement; glitches; impulsive noise; laboratory instrumentation; measuring time; real-time estimation; resonant sensors; sensors signal paramete; spectral analysis; square wave; Analog-digital conversion; Digital signal processing; Digital signal processors; Frequency conversion; Frequency estimation; Noise robustness; Resonance; Resonant frequency; Signal processing; Testing;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
