Non-contact Blood Pressure Measurement Method Using Frequency Modulated Continuous Wave Radar.
10.3969/j.issn.1671-7104.2022.05.002
- Author:
Jinhui ZHANG
1
;
Xinyue ZHANG
2
;
Wenyao MU
2
;
Xikang JIANG
2
;
Ni YANG
1
;
Lei LI
2
Author Information
1. Logistic Support Center, Chinese PLA General Hospital, Beijing, 100853.
2. School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing, 100876.
- Publication Type:Journal Article
- Keywords:
FMCW radar;
blood pressure;
heartbeat-guided;
non-contact;
slight-motion interference removal
- MeSH:
Algorithms;
Blood Pressure;
Blood Pressure Determination;
Heart Rate;
Humans;
Radar;
Signal Processing, Computer-Assisted;
Vital Signs
- From:
Chinese Journal of Medical Instrumentation
2022;46(5):481-484
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:Non-contact continuous blood pressure monitoring is significant in vital sign monitoring. Frequency modulated continuous wave (FMCW) radar is suitable for non-contact wave signal extraction. A heartbeat-guided blood pressure monitoring algorithm using FMCW radar is proposed.
METHODS:The target heart rate is detected and pulse wave signal is extracted based on FMCW reflected signals. The variational mode decomposition (VMD) is introduced to alleviate the interferences of human breath and slight body movements. The pulse wave signal is extracted based on target heart rate. Blood pressure related features of pure pulse waveform are extracted to obtain blood pressure based on its estimation model.
RESULTS:Experiments are conducted indoor among 15 participants sitting in a nature state. The average accuracy of diastolic blood pressure (DBP) is 94.3% and that of systolic blood pressure is 94.4%.
CONCLUSIONS:The experimental results demonstrate the robustness and effectiveness of the proposed algorithm, which makes it possible to further achieve long-term real-time non-contact blood pressure monitoring.
