基于床垫动态压力检测的胸腹呼吸运动无束缚监测方法  

Unconstrained Monitoring of Sleep Respiration Based on Detection of Pressure fluctuations on Mattress

作　　者：赵兴利[1] 齐德瑄[1] 刘今越[1] 郭士杰 ZHAO Xingli;QI Dexuan;LIU Jinyue;GUO Shijie(School of Mechanical Engineering,State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei Key Laboratory of Robot Sensing and Human-Robot Interaction,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]河北工业大学机械工程学院,省部共建电工装备可靠性与智能化国家重点实验室,河北省机器人感知与人机融合重点实验室,天津300130

出　　处：《医用生物力学》2021年第1期116-121,共6页Journal of Medical Biomechanics

基　　金：国家自然科学基金项目(61871173);河北省高等学校科学技术研究重点项目(2D2015084)。

摘　　要：目的开发一种适用于日常居家使用的无束缚睡眠呼吸监测方法,实现睡眠呼吸暂停综合征(sleep apnea syndrome,SAS)及呼吸系统疾病的无束缚筛查。方法提出一种基于床单式柔性压力传感器的无束缚胸腹呼吸监测方法,通过检测呼吸时胸部和腹部作用于床垫的动态压力获取呼吸信息。对10名健康受试者进行无束缚监测与胸腹呼吸带监测的对比实验,验证所提方法的有效性。结果床单式柔性压力传感器可以检测呼吸时胸部和腹部作用于床垫的动态压力,并据此获取呼吸波形和呼吸率信息。其中,呼吸率与胸腹呼吸带的输出结果相同,而呼吸动态压力波形与胸腹呼吸带输出信号在相位上存在差异,该差异与受试者的睡姿和性别有关。建立胸式呼吸有限元模型,对呼吸运动的相位差异进行初步分析。结论床单式柔性压力传感器可以无束缚监测呼吸时胸部和腹部运动,具有判别SAS类型的潜力。由于胸腹运动存在力学耦合关系,欲利用动态压力识别胸腹运动的相位差,进一步需进行解耦研究。Objective To develop a method for monitoring unconstrained sleep respiration suitable for daily use at home,so as to realize high precision screening of sleep apnea syndrome( SAS) or other respiratory diseases without affecting normal sleep. Methods A new unconstrained measurement method using sheet-type flexible pressure sensor was proposed. This method could obtain the information of respiratory motions of the chest and abdomen by measuring the pressure fluctuations of the chest and abdomen acting on the mattress. Experiments were conducted on ten healthy subjects to confirm effectiveness of the proposed method by comparing the result of the unconstrained measurement and those of respiratory inductance plethysmography( RIP) using band sensors,respectively. Results Sheet-type flexible pressure sensor could measure the pressure fluctuations of the chest and abdomen acting on the mattress during respiration and obtain respiratory waveform and respiratory rate. The respiratory rate measured with the sheet-type flexible pressure sensor agreed with those obtained by RIP. The gender and the lying position greatly affected whether the phases of the pressure fluctuations of the chest and abdomen measured with the flexible sensor differed from those obtained by RIP. The chest respiratory finite element model was established to analyze the phase difference of respiratory movement. Conclusions Sheet-type flexible pressure sensor is effective to monitor unconstrained sleep respiration,indicating the potential to identify the SAS types. But further researches of motion decoupling are required to identify the phase difference between the chest motion and the abdomen motion,which are coupled with each other.

关 键 词：睡眠呼吸暂停综合征 床单式柔性压力传感器 胸腹运动 体压变动 

分 类 号：R318.01[医药卫生—生物医学工程]