血氧仪电路参数调整算法研究  

Algorithm Research on Parameters Control of Non-invasive Oximeter Circuit

作　　者：张帅[1] 胡平平[1] 

机构地区：[1]北京信息科技大学自动化院,北京100192

出　　处：《信息通信》2016年第1期42-45,共4页Information & Communications

摘　　要：为改进血氧饱和度仪低灌注测量精度和测量性能及提高抗干扰性能,在以往低成本低功耗无创血氧监测技术方面的研究工作的基础之上,研究利用PID算法实现手指插入检测并通过调整发光管亮度、背景光偏移量和直流偏移量及末级放大倍数以最大限度的发挥新电路的放大能力和动态范围。实验表明该算法能准确检测出手指是否插入并能获得较好的采样信号。In order to improve the hypoperfusion measurement accuracy and disturbance resistance performance of non-invasive oximeter, based on the previous monitor techniques study on low-cost and low power consumption non-invasive oximeter, we use PID algorithm to detect whether the finger has been inserted and adjust the luminosity of the LEDs, background light offset,DC offset and the final magnification to optimize the magnification capacity and dynamic range of our new circuit. Our experiments have shown that the algorithm for finger detection is quite effective and we can acquire better sampling data than other methods.

关 键 词：血氧饱和 参数调整 PID算法 

分 类 号：TH789[机械工程—仪器科学与技术]