基于调频连续波雷达的无接触血压监测方法的研究与实现  

Non-contact Blood Pressure Measurement Method Using Frequency Modulated Continuous Wave Radar

作　　者：张金辉[1] 张欣悦 穆文遥 姜夕康 央妮 李蕾[2] ZHANG Jinhui;ZHANG Xinyue;MU Wenyao;JIANG Xikang;YANG Ni;LI Lei(Logistic Support Center,Chinese PLA General Hospital,Beijing,100853;School of Artificial Intelligence,Beijing University of Posts and Telecommunications,Beijing,100876)

机构地区：[1]解放军总医院服务保障中心,北京市100853 [2]北京邮电大学人工智能学院,北京市100876

出　　处：《中国医疗器械杂志》2022年第5期481-484,508,共5页Chinese Journal of Medical Instrumentation

基　　金：军队装备综合研究项目(LB2020A010010)。

摘　　要：目的无接触连续性血压监测是生命体征监测领域的研究热点。调频连续波(FMCW)雷达适用于无接触提取脉搏波信号,基于此提出一种心跳信号引导的血压监测算法。方法基于FMCW雷达回波信号探测目标心率并提取脉搏波信号,采用变分模态分解方法去除人体呼吸和轻微体动对脉搏波信号造成的干扰,基于目标心率恢复有效的脉搏波信号,继而基于血压估测模型提取脉搏波特征时间实现血压监测。结果在自然静坐场景下对15名受试者进行测试,平均舒张压准确率为94.3%,平均收缩压准确率为94.4%。结论所提出的无接触连续性血压监测算法能精准鲁棒地实现血压估测。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%.Conclusion 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.

关 键 词：血压 调频连续波雷达 微动干扰去除 心跳引导 无接触 

分 类 号：R197.39[医药卫生—卫生事业管理] R443.5[医药卫生—公共卫生与预防医学] TH77[机械工程—仪器科学与技术]