光电脉搏传感器的研制和噪声分析  

A New Design of PPG Pulse Sensor and Noise Analysis

作　　者：戴君伟[1] 王博亮[1] 

机构地区：[1]厦门大学,福建厦门361005

出　　处：《现代电子技术》2006年第2期78-80,90,共4页Modern Electronics Technique

基　　金：国家自然科学基金(60371012);福建省科技重点项目(2002Y021)

摘　　要：脉搏血氧仪能够无创、快速、实时地测量血氧饱和度,光电式脉搏传感器是脉搏血氧仪的重要组成部分。介绍了光电式脉搏传感器的原理和设计方案,采用集成光敏部件和放大器的光敏芯片代替传统的分立光敏器件实现对脉搏的测量。芯片的集成化能够有效减小器件间匹配引起的干扰,提高脉搏测量精度。在实验测试过程中,采用该光电式脉搏传感器对人体的脉搏进行实时测量,对脉搏信号测量可能引起的噪声来源做了分析,并做相应的抗干扰处理,得到比较理想的脉搏波形,为脉搏信息的提取和分析提供了良好的数据。A new photoplethymograph （PPG） pulse sensor for long tern,continuous monitoring is presented in this paper. The PPG pulse sensor is attached to the finger base for monitoring beat -to -beat pulsation. Comparing with the traditional design, the pulse sensor uses a new integrated chip ,which is integrated the photosensitive unit and the signal amplifier. This design can efficiently remove the system noise and improve the precision of measure. In the experiment,using the new PPG pulse sensor can measure the pulse directly from the pulse in real - time. At the same time,making the noise analysis and dealing with the measure noise ,and getting a good pulse wave.

关 键 词：脉搏信号 光电容积法 光电脉搏传感器 噪声分析 测量精度 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]