嵌入式ARM Linux血氧饱和度监测系统设计

氧是生命活动的基础，缺氧会导致许多疾病，为了实现对血氧饱和度这一重要人体生理参数的实时和精确监测，为了使系统具有良好的可移植性、稳定性以及功能的多样性，系统采用Samsung公司的ARM9核的S3C2440嵌入式微处理器，完成了嵌入式 Linux 操作系统2．6．30．4在S3C2440上的移植，驱动程序的编写、移植，以及基于yaffs2系统的根文件系统的构建。S3C2440通过SPI总线接口与集成模拟前端AFE4400进行通信，实现了血氧饱和度数据处理、分析和显示。实验证明，系统运行稳定且高效，并且具有良好的可扩展性，对构筑基于嵌入式ARM＿Linux的医疗监测系统具有非常的重要意义。

Design of embedded ARM Linux monitoring system of oxygen saturation

Oxygen is the basis of life activities ,and hypoxia can cause many diseases .The system uses Samsung's S3C2440 ARM9 embedded microprocessor cores in order to achieve the oxygen saturation which is an important physiological parameters in real time and accurately monitor ,make the system has good portability , stability and functional diversity .The system finished embedding Linux operating system 2 .6 .30 .4 on S3C2440 transplantation , write ,transplantation ,and yaffs2 based root file system driver system .S3C2440 to communicate with integrated analog front end AFE4400 via SPI bus ,which realized the blood oxygen saturation data processing ,analysis and display .Experiments show that the system is stable and efficient and has good stability .This system has built a very important significance embedded ARM_Linux medical monitoring system .