基于FPGA的脉搏血氧饱和度检测系统设计

Development of Pulse Oxygen Saturation Measurement System Based on FPGA

血氧饱和度是衡量人体血液携带氧能力的重要参数,也是临床诊断和家庭保健中重要的生理指标。根据红外光谱法血氧饱和度测量原理,设计了一种血氧饱和度测量系统。系统以FPGA为开发平台,包括RSJ048CAS指夹式脉搏血氧探头、AD采集模块、信号调理模块、控制显示模块等模块,它可以实时、连续和无创地进行血氧饱和度检测。实验结果表明,在安静状态下,该系统可实现测得的血氧饱和度不低于94%。

Oxygen saturation is an important parameter to measure human blood oxygen carrying capacity, and also an important physiological indexes in the common clinical diagnosis and family care. Based on the infrared spectrum method in blood oxygen saturation measurement, a pulse oxygen aturation measurement system is designed. The system which consists of the FPGA platform, the RSJ048CAS finger chip pulse oximeter sensor, control and display module, can monitor the oxygen saturation timely, continuously and non-invasively. The experimental results show that in a quiet state the system can realize the measurement of the oxygen saturation not less than 94%.