Effect of ADC Resolution on Low-Frequency Electrical Time-Domain Impedance Spectroscopy

• Autorzy: Namin R. L. , Ashtiani S. J.

Identyfikatory

DOI

10.1515/mms-2017-0019

• Języki publikacji: EN

Abstrakty

EN

In this paper, the effect of the resolution of an analogue-to-digital converter (ADC) on the accuracy of timedomain low-frequency electrical impedance spectroscopy is examined. For the first time, we demonstrated that different wideband stimuli signals used for impedance spectroscopy have different sensitivities to the resolution of ADC used in impedance spectroscopy systems. We also proposed Ramp and Half-Gaussian signals as new wideband stimulating signals for EIS. The effect of ADC resolution was studied for Sinc, Gaussian, Half-Gaussian, and Ramp excitation signals using both simulation and experiments. We found that Ramp and Half-Gaussian signals have the best performance, especially at low frequencies. Based on the results, a wideband electrical impedance spectroscopy circuit was implemented with a high accuracy at frequencies bellow 10 Hz.

Słowa kluczowe

EN

electrical impedance spectroscopy; analogue-to-digital converter; Ramp signal; fast Fourier transform; Nyquist plot

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2017
• Tom: Vol. 24, nr 2
• Strony: 425--436
• Opis fizyczny: Bibliogr. 17 poz., rys., tab., wykr.

Twórcy

autor

Namin R. L.

• University of Tehran, College of Engineering, P.O. Box 14395/515 Tehran, Iran

autor

Ashtiani S. J.

• University of Tehran, College of Engineering, P.O. Box 14395/515 Tehran, Iran

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).