Robust and accurate real-time estimation of sensors signal parameters by aDSP approach

The paper presents a spectral method for robust and accurate real-time freq uency estimation when a square wave affected by impulsive noise is consider ed, The method, tailored for signals coming from typical resonant sensors ( frequency from 2 kHz to 22 kHz), has been implemented and tested using a fl oating-point digital signal Pprocessor (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 Tim e, while resolution (10(-6)) and measuring time (10 ms), are close to the o nes of traditional high-cost laboratory instrumentation.