一种单片便携式脉搏血氧饱和度测量仪的研制

A Single-Chip Portable Pulsoximeter Design

根据红外光谱法血氧饱和度测量原理,以MSP430为开发平台,设计了一种便携式无线脉搏血氧仪。设计中采用了一种新型的腕式血氧探头,使用户佩戴和测量更加方便;硬件设计上充分利用了单片机内部的功能模块,使外围元件个数减到最少,功耗降到最低;软件设计上实现了信号调制、信号处理、信息显示和无线通信等功能。实验样机的初步测量结果表明,在安静的状态下血氧饱和度测量误差在1%之内。

Based on the infrared spectrum method in blood oxygen saturation measurement,the implementation of a portable wireless pulsoximeter using the MSP430 is demonstrated.A new peripheral probe which is placed on the wrist of the body is adopted in design in order to facilitate the measurement.The MCU internal modules are fully used in hardware design in order to keep the external components and the power consumption to a minimum.The functions such as signal modulation,signal processing,information display and wireless communication are realized in software design.The experimental result indicates that the blood oxygen saturation measurement error is within 1% in the quiet environment.