血液净化系统的高可靠性漏血监测方法研究

Research on high reliably blood-leak monitoring in blood purification systems

为提高血液净化系统中漏血监测的可靠性,减少漏血检测易出现的误报、漏报现象,提出一种可靠的漏血检测方法。采用小波分析技术对检测的光电转换信号进行处理,去除气泡通过时对漏血检测的噪声影响,并针对管壁污染的现象,采取漂移跟踪算法进行报警阈值自适应调整,以减少检测的误报和漏报。实验结果表明采用小波分析技术和漂移跟踪算法用于血液净化系统的漏血监测取得了较好的效果。

To improve the reliability of monitoring blood-leak in blood purification systems （BPSs）, a new detecting approach for blood-leak is presented to reduce misinformation and report missing. Wavelet de-noising is adopted to eliminate the interference introduced by air bubbles in light-electronic transforming signal, and an algorithm tracking the detecting voltage drift due to dirty pipeline of waste fluid and adjusting the alarm threshold is used to enhance the adaptability of monitoring blood-leak. Experiments show that this method can be effectively applied in BPSs.