Non-contact Blood Pressure Measurement using Doppler Radar based on Waveform Analysis by LSTM

Shuzo Ishizaka, Kohei Yamamoto, Tomoaki Ohtsuki

研究成果: Conference contribution

3 被引用数 (Scopus)


Recently, non-contact blood pressure measurement is attracting increasing interests because it is suitable for the blood pressure measurement on a daily basis. A Doppler radar is a key device to enable the non-contact blood pressure measurement, and it can observe pulse waves due to aortic vasomotion. Specifically, PTT (Pulse Transit Time) is known to be correlated with the blood pressure, and thus the blood pressure can be measured by calculating the PTT from the pulse waves. However, to avoid the effects of slight body movements and breathing, the conventional method requires the subject to lie down on a bed and to stop breathing. In this paper, we propose a Doppler radar-based blood pressure measurement method that works against a subject with slight body movements and breathing. Due to respiration and slight body movements, the pulse wave could be distorted, which makes it difficult to calculate PTT. To solve this issue, in the proposed method, by relating features of the distorted pulse wave to those of the clean pulse wave using a deep learning model with LSTM (Long Short-Term Memory), the distorted pulse wave is transformed to a clean pulse wave that provides PTT correlated with the blood pressure strongly. The experimental results showed that PTT calculated using the proposed method has a strong correlation with actual blood pressure and the accuracy of blood pressure estimation is improved, compared with the conventional method.

ホスト出版物のタイトルICC 2021 - IEEE International Conference on Communications, Proceedings
出版社Institute of Electrical and Electronics Engineers Inc.
出版ステータスPublished - 2021 6月
イベント2021 IEEE International Conference on Communications, ICC 2021 - Virtual, Online, Canada
継続期間: 2021 6月 142021 6月 23


名前IEEE International Conference on Communications


Conference2021 IEEE International Conference on Communications, ICC 2021
CityVirtual, Online

ASJC Scopus subject areas

  • コンピュータ ネットワークおよび通信
  • 電子工学および電気工学


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