Microwave reflectometric measurement of heart-rate variability and stress evaluation

A. Mase, N. Ito, Y. Komada, A. Kobayashi, Toru Maruyama, H. Shimazu, E. Sakata, F. Sakai

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

2 Citations (Scopus)

Abstract

The stress evaluation becomes important for the prior prevention of stress-related illnesses. One of the methods is to analyze the fluctuations of heartbeat called by heart rate variability (HRV), since the heartbeat interval is constantly fluctuating by reflecting autonomous nerve activity. The HRV has been obtained from peak intervals in an electrocardiogram (ECG). However, the use of the ECG is not suitable for a long time monitor, since several electrodes have to be attached to a human body. We report here on an evaluation method of the heart rate variability and stress using a microwave reflectometer with frequency of 10 GHz. The key technical developments (phase detector with AGC amplifier, data processing for HRV evaluation) are described. The protocol for stress evaluation examination is prepared in order to apply to various testee. The values of HRV and its spectra obtained by a reflectometer are in good agreement with those obtained by ECG.

Original languageEnglish
Title of host publication2012 Asia-Pacific Microwave Conference, APMC 2012 - Proceedings
Pages625-627
Number of pages3
DOIs
Publication statusPublished - 2012
Event2012 Asia-Pacific Microwave Conference, APMC 2012 - Kaohsiung, Taiwan, Province of China
Duration: Dec 4 2012Dec 7 2012

Other

Other2012 Asia-Pacific Microwave Conference, APMC 2012
CountryTaiwan, Province of China
CityKaohsiung
Period12/4/1212/7/12

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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  • Cite this

    Mase, A., Ito, N., Komada, Y., Kobayashi, A., Maruyama, T., Shimazu, H., Sakata, E., & Sakai, F. (2012). Microwave reflectometric measurement of heart-rate variability and stress evaluation. In 2012 Asia-Pacific Microwave Conference, APMC 2012 - Proceedings (pp. 625-627). [6421685] https://doi.org/10.1109/APMC.2012.6421685