Comparison between sine wave fitting and zero- crossing methods applied to QCM impedance measurements
Document typeConference report
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessRestricted access - publisher's policy
This paper presents a comparison between two algorithms for sinusoidal signal characterization applied to QCM impedance measurements. These algorithms are the zero crossing and peak detection method and the 7 parameters sine-fitting method. Simulation and experimental results from both methods are shown in order to determine which method provides the best performance in terms of accuracy. Obtaining a precise value of the QCM impedance depends directly on the precise measurement of the amplitude and phase of two sinusoidal voltages. It was found that the sine-fitting method achieves better results without an excessive associated computational burden. These results will be applied to the development of a new technique for biofilm characterization based on multiple QCM impedance measurements.
CitationChavez-Dominguez, J. A., Garcia, M., Millán-Blasco, O., Tur, I., Turo, A., Amer, M., Salazar, J. Comparison between sine wave fitting and zero- crossing methods applied to QCM impedance measurements. A: IEEE International Instrumentation and Measurement Technology Conference. "I2MTC: 2017 IEEE International Instrumentation and Measurement Technology Conference: May 22-25, 2017: Torino, Italy: 2017 proceedings papers". Torino: Institute of Electrical and Electronics Engineers (IEEE), 2017, p. 1483-1487.