Next Article in Journal
A Quasi-Average Estimation Aided Hierarchical Control Scheme for Power Electronics-Based Islanded Microgrids
Next Article in Special Issue
A Robust Registration Method for Autonomous Driving Pose Estimation in Urban Dynamic Environment Using LiDAR
Previous Article in Journal
Design of Electroporation Process in Irregularly Shaped Multicellular Systems
Previous Article in Special Issue
5GHz CMOS All-Pass Filter-Based True Time Delay Cell
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessFeature PaperArticle
Electronics 2019, 8(1), 38; https://doi.org/10.3390/electronics8010038

A Multichannel FRA-Based Impedance Spectrometry Analyzer Based on a Low-Cost Multicore Microcontroller

Group of Electronic Design, Aragon Institute for Engineering Research, University of Zaragoza, 50009 Zaragoza, Spain
*
Author to whom correspondence should be addressed.
Received: 9 November 2018 / Revised: 19 December 2018 / Accepted: 21 December 2018 / Published: 1 January 2019
(This article belongs to the Special Issue Signal Processing and Analysis of Electrical Circuit)
Full-Text   |   PDF [8500 KB, uploaded 1 January 2019]   |  

Abstract

Impedance spectrometry (IS) is a characterization technique in which a voltage or current signal is applied to a sample under test to measure its electrical behavior over a determined frequency range, obtaining its complex characteristic impedance. Frequency Response Analyzer (FRA) is an IS technique based on Phase Sensitive Detection (PSD) to extract the real and imaginary response of the sample at each input signal, which presents advantages compared to FFT-based (Fast Fourier Transform) algorithms in terms of complexity and speed. Parallelization of this technique has proven pivotal in multi-sample characterization, reducing the instrumentation size and speeding up analysis processes in, e.g., biotechnological or chemical applications. This work presents a multichannel FRA-based IS system developed on a low-cost multicore microcontroller platform which both generates the required excitation signals and acquires and processes the output sensor data with a minimum number of external passive components, providing accurate impedance measurements. With a suitable configuration, the use of this multicore solution allows characterizing several impedance samples in parallel, reducing the measurement time. In addition, the proposed architecture is easily scalable. View Full-Text
Keywords: electrochemical impedance spectroscopy; FRA; multichannel acquisition; impedance spectrometry; microcontroller electrochemical impedance spectroscopy; FRA; multichannel acquisition; impedance spectrometry; microcontroller
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Sanchez-Gonzalez, A.; Medrano, N.; Calvo, B.; Martinez, P.A. A Multichannel FRA-Based Impedance Spectrometry Analyzer Based on a Low-Cost Multicore Microcontroller. Electronics 2019, 8, 38.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Electronics EISSN 2079-9292 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top