- Tytuł:
- Effect of ADC Resolution on Low-Frequency Electrical Time-Domain Impedance Spectroscopy
- Autorzy:
-
Namin, R. L.
Ashtiani, S. J. - Powiązania:
- https://bibliotekanauki.pl/articles/221144.pdf
- Data publikacji:
- 2017
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
electrical impedance spectroscopy
analogue-to-digital converter
Ramp signal
fast Fourier transform
Nyquist plot - Opis:
- 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.
- Źródło:
-
Metrology and Measurement Systems; 2017, 24, 2; 425-436
0860-8229 - Pojawia się w:
- Metrology and Measurement Systems
- Dostawca treści:
- Biblioteka Nauki
Artykuł