便携式多参数监护仪的研制与开发——脉搏血氧测量仪

便携式多参数监护仪在医院、急救和家庭监护系统中扮演着越来越重要的角色。系统以Intel XScale处理器的嵌入式平台作为数据处理和显示平台,脉搏信号的采集端通过无线射频集成芯片nRF905与嵌入式平台实现数据通信。在硬件上实现了光传感器的双光束时序控制、数据采集和无线通信,在嵌入式平台上运用了数字信号处理算法和计算脉率、血氧饱和度的算法,有效地克服了测量信号的噪声干扰。

Research and Development of the Portable Multiparameter Monitor--Pulse Oximeter

The portable multiparameter monitor plays a more and more important part in the fields of hospital,first-aids and home security.The central platform used to process and display data is based on the processor of Intel XScale.The pulse signals transfer between measure end and central platform with radio frequency communication.For the hardware,the system achieves controlling sequence of two beams of light of light sensor,sampling data and wireless communication.For the central platform,using the arithmetic of digital signals process,calculating pulse rate method and oxygen saturation to overcome the signal noise and interference effectively.