Perancangan dan Fabrikasi Sistem Complex Impedance Analyzer Berbasis Chipset AD5933

  • Ikhsan Nurdianis Departemen Teknik Elektro, Universitas Padjadjaran
  • Darmawan Hidayat Departemen Teknik Elektro, Universitas Padjadjaran
  • Nendi Suhendi Syafei Departemen Teknik Elektro, Universitas Padjadjaran
PDF
DOI https://doi.org/10.31544/jtera.v4.i2.2019.139-146
Published 2019-12-31
Full Text Preview
Download PDF

Abstract

Sistem complex impedance analyzer adalah sebuah perangkat pengukuran impedansi yang dapat diprogram untuk melakukan penyisiran frekuensi dari 10 hingga 100 kHz dengan jumlah penyisiran 10 titik pengukuran. Perangkat ini memungkinkan parameter impedansi suatu sistem fisis eksternal yang disebut sebagai Device Under Test (DUT) dapat diketahui dengan memberikan sinyal sinusoidal sesuai frekuensi yang telah ditentukan. Penelitian ini bertujuan untuk merancang dan membuat sistem complex impedance analyzer berbasis chipset AD5933. Respon frekuensi DUT dapat diperoleh dari hasil sampling analog-to-digital converter (ADC) dan komputasi discrete fourier transform (DFT) yang dilakukan oleh mesin DSP untuk mengembalikan data nilai real dan data nilai imajiner sinyal respon sistem DUT pada tiap nilai frekuensi yang ditentukan. Seluruh proses ini meliputi pembangkitan sinyal sinusoidal, konversi ADC, hingga komputasi DFT dilakukan di dalam chipset AD5933. Pengujian rangkaian kompleks orde pertama dengan resistor 10 kW dan kapasitor 470 pF yang dirangkai secara seri sebagai sampel DUT menghasilkan karakteristik magnitudo aktual |Z| yaitu pada frekuensi tinggi. Kapasitor berperilaku sebagai short circuit sehingga magnitudo aktual |Z| mendekati nilai R. Keadaan tersebut dibatasi oleh titik frekuensi cut-off dari respon frekuensi yang diperoleh. Hal tersebut berimplikasi kepada nilai fasa aktual Z yang semakin mendekati 0°.

 

Keywords

Complex Impedance Analyzer Chipset AD5933 Device Under Test (DUT) frekuensi cut-off

References

C. K. Alexander and M. N. O. Sadiku, Fundamentals of Electric Circuit Fifth Edition, New York: Mc Graw Hill, 2013.
Keysight Technologies, Impedance Measurement Handbook A guide to Measurement technology and techniques 6th Edition, Application Note. USA: Keysight Technologies. 2016.
H. Berney and J. J. O'Riordan, “Impedance Measurement Monitors Blood Coagulation,†Analog Dialogue, vol. 42-08, pp. 1-3, 2008.
J. Ferreira, F. Seoane, A. Ansede and R. Bragos, “AD5933-based Spectrometer for Electrical Bioimpedance Applicationsâ€. Journal of Physics: Conference Series 224, 012011, pp. 1-4, 2010.
D. K. Kamat, A. P. Chavan, and P. M. Patil, “Bio-Impedance Measurement System for Analysis of Skin Diseases,†International Journal of Application or Innovation in Engineering & Management (IJAIEM), vol. 3, no. 2, pp. 92-96, 2014.
P. D. Shimpi and D. M. Yadav, “Bio-impedance Detection Using AD5933 Impedance Converter Analyzerâ€, International Journal of Science and Research (IJSR), vol. 4, no. 7, pp. 1011-1014, 2013.
U. Pliquett and A. Barthel, “Interfacing the AD5933 for bio-impedance measurements with front ends providing galvanostatic or potentiostatic excitation,†Journal of Physics: Conference Series 407, 012019, pp. 1-4, 2012.
C. P. Providakis, E. V. Liarakos, and E. Kampianakis, “Nondestructive Wireless Monitoring of Early-Age Concrete Strength Gain Using an Innovative Electromechanical Impedance Sensing System,†Smart Materials Research, vol. 2013, pp. 1-10, 2013.
A. A. Ali, A. Elwakil, A. Ahmad, and B. Maundy, “Design of a Portable Low-Cost Impedance Analyzer,†Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2017), pp. 104-109, 2017.
J. Hoja and G. Lentka, “Portable Analyzer for Impedance Spectroscopy,†Fundamental and Applied Metrology on XIX IMEKO World Congress, Lisbon, Portugal, September 2009.
K. Chabowski, T. Piasecki, A. Dzierka, and K. Nitsch, “Simple Wide Frequency Range Impedance Meter Based on AD5933 Integrated Circuitâ€, Metrology and Measurement Systems, vol. 22, no. 1, pp. 13-24, 2015.
N. J. Djermanova, J. G. Kiss’ovski, and V. A. Vatchkov, “Portable Arduino-Based LCR Meter,†Annual Journal of Electronics, vol. 2014, pp. 170-173, 2014.
L. Matsiev, “Improving Performance and Versatility of Systems Based on Single-Frequency DFT Detectors Such as AD5933,†Electronics, vol. 4, pp. 1-34, 2015.
S. A. Ghaffari, W. O. Caron, M. Loubier, C. O. Normandeau, J. Viens, M. S. Lamhamedi, B. Gosselin and Y. Messaddeq, “Electrochemical Impedance Sensors for Monitoring Trace Amounts of NO3 in Selected Growing Media,†Sensors, vol. 15, pp. 17715-17727, 2015.
J. Ding, X. Sun, Y. Guo, H. Jia, L. Qiao, and X. Wang, “A Portable Pesticide Residues Detection Instrument Based on Impedance Immunosensor,†Sensors & Transducers, vol. 172, no. 6, pp. 27-33, 2014.
M. Usach, “How to Configure the AD5933/AD5934,†Analog Devices AN-1252 Application Note, pp. 1-12, 2013.
S. Brennan, “Measuring a Grounded Impedance Profile Using the AD5933,†Analog Devices AN-847 Application Note, pp. 1-12, 2006.

Issue

Vol. 4 No. 2: December 2019

Section

Articles

License

Authors who publish with this journal agree to the following terms:

The copyright to this article is transferred to JTERA if and when the article is accepted for publication. The undersigned hereby transfers any and all rights in and to the paper including without limitation all copyrights to JTERA. The undersigned hereby represents and warrants that the paper is original and that he/she is the author of the paper, except for material that is clearly identified as to its original source, with permission notices from the copyright owners where required. The undersigned represents that he/she has the power and authority to make and execute this assignment. The copyright transfer form will be sent via email before the article published.

The corresponding author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. This agreement is to be signed by at least one of the authors who have obtained the assent of the co-author(s) where applicable. After submission of this agreement signed by the corresponding author, changes of authorship or in the order of the authors listed will not be accepted.

How to Cite

[1]
“Perancangan dan Fabrikasi Sistem Complex Impedance Analyzer Berbasis Chipset AD5933”, JTERA, vol. 4, no. 2, pp. 139–146, Dec. 2019, doi: 10.31544/jtera.v4.i2.2019.139-146.