Development of high time resolution measurement system of frequency characteristics in bioelectrical impedance for biodynamic analysis

Takao Nakamura, Toshimasa Kusuhara, Yoshitake Yamamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We have proposed biodynamic analysis using bioelectrical impedance at 50 kHz, which is measured with synchronous rectification method. In order to analyze impedance parameters in biodynamics, the measurement of frequency characteristics in bioelectrical impedance with a high time resolution are required. Therefore we have developed a high time resolution measurement system for bioelectrical impedance with 10 frequency points and time resolution of 1 ms. A voltage EA, which consisted of fundamental wave and 9 kinds of harmonic wave from 1 kHz to 1 MHz, were converted to current. The current flowed through human body and a potential voltage, EV was detected in the measured part. After A/D conversion of EV and EA in the sampling frequency 2 MHz, data number 2048 points, the impedance were calculated using Fast Fourier Transform. The measured time 1.024 ms was the period of the fundamental wave and time resolution of this system. The specification is enough accuracy for measurement of bioelectrical impedance for biodynamic analysis.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume6357 I
DOIs
Publication statusPublished - 2006
EventSixth International Symposium on Instrumentation and Control Technology: Signal Analysis, Measurement Theory, Photo-Electronic Technology, and Artificial Intelligence - Beijing, China
Duration: Oct 13 2006Oct 15 2006

Other

OtherSixth International Symposium on Instrumentation and Control Technology: Signal Analysis, Measurement Theory, Photo-Electronic Technology, and Artificial Intelligence
CountryChina
CityBeijing
Period10/13/0610/15/06

Fingerprint

biodynamics
Acoustic impedance
impedance
Electric potential
Fast Fourier transforms
human body
electric potential
rectification
Sampling
Specifications
specifications
sampling
harmonics

Keywords

  • Biodynamic analysis
  • Bioelectrical impedance
  • Frequency characteristics
  • High time resolution

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Development of high time resolution measurement system of frequency characteristics in bioelectrical impedance for biodynamic analysis. / Nakamura, Takao; Kusuhara, Toshimasa; Yamamoto, Yoshitake.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6357 I 2006. 63571S.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nakamura, T, Kusuhara, T & Yamamoto, Y 2006, Development of high time resolution measurement system of frequency characteristics in bioelectrical impedance for biodynamic analysis. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 6357 I, 63571S, Sixth International Symposium on Instrumentation and Control Technology: Signal Analysis, Measurement Theory, Photo-Electronic Technology, and Artificial Intelligence, Beijing, China, 10/13/06. https://doi.org/10.1117/12.717000
Nakamura, Takao ; Kusuhara, Toshimasa ; Yamamoto, Yoshitake. / Development of high time resolution measurement system of frequency characteristics in bioelectrical impedance for biodynamic analysis. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6357 I 2006.
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