一款耳部血氧饱和度采集装置的研制  

Research on an oxygen saturation monitoring device with a in-ear sensor system

作　　者：李伟权[1] 周文光 LI Weiquan;ZHOU Wenguang(Xiamen Ocean Vocational College,Xiamen 361102,China;Medical Engineering Department,32251 Unit,People′s Liberation Army Xiamen 361003)

机构地区：[1]厦门海洋职业技术学院,厦门361102 [2]32251部队医学工程科,厦门361003

出　　处：《生物医学工程研究》2021年第4期407-412,共6页Journal Of Biomedical Engineering Research

基　　金：福建省海洋经济发展补助资金项目(ZHHY-2019-4);厦门市海洋与渔业发展专项资金项目(19CZB015HJ02)。

摘　　要：本研究采用美信公司的MAX30102新型血氧饱和度传感器模块,研制了一款耳部血氧饱和度采集装置,以无线入耳式耳机的方式,在耳道的入耳处采集人体的血氧饱和度指标。为了提高检测过程中的信号抗干扰度,本研究设计了专用的导光柱增强检测光透光性,降低自然光的干扰,同时可以紧贴皮肤,减少运动产生的位移。数据处理方面结合耳机内置的三轴加速度传感器,采用LMS自适应滤波的方法滤除因运动位移产生的干扰信号。实验证明,该装置可以有效滤除因运动位移所产生的运动干扰。We used the MAX30102 new blood oxygen saturation sensor module to develop an ear blood oxygen saturation collection device.The blood oxygen saturation index of human body was collected from the external acoustic meatus by the way of wireless earphone.In order to improve the anti-interference degree of the signal in the detection process,a special light guide column was designed to enhance the transmittance of the detection light,and reduce the interference of natural light.At the same time,it could be close to the skin to reduce the displacement caused by movement.During data processing,the interference signal caused by motion and displacement was filtered by the LMS adaptive filtering method combined with the three-axis acceleration sensor built into the earphone.The experimental results show that this device can effectively filter the motion interference caused by motion displacement.

关 键 词：血氧饱和度检测 耳道 抗运动干扰 LMS自适应滤波器 可穿戴设备 光电容积脉搏波法 导光柱 

分 类 号：R318.6[医药卫生—生物医学工程] TH714.52[医药卫生—基础医学]