监测脉搏波传导时间的无线传感器网络系统(英文)

A monitoring system of pulse wave transit time based on wireless sensor networks

随着无线传感器网络技术的出现,低负荷医学监测技术发生了革命性的变化。文章运用无线传感器网络技术设计了心电和脉搏波无线传感器组成整个监测系统,同步测量头部颞浅动脉脉搏波信号和体表心电信号,以及计算脉搏波传导时间。此心电和脉搏波无线传感器的体积小,且采用纽扣电池供电,彼此之间的时间同步精度小于1ms。计算出的脉搏波传导时间随缓慢深呼吸而相应变化。提示由具有体积小、功耗低和时间同步精度高等特点的心电和脉搏波无线传感器组成的监测系统能够在作业条件下连续低负荷监测脉搏波传导时间。

With the occurrence of wireless sensor networks, low-load monitoring has a revolutionary change. Using wireless sensor networks, the whole monitoring system is composed of wireless electrocardiogram （ECG） sensors and wireless pulse wave sensors. Pulse wave signals from the temporal artery and ECG signals from the body synchronously were measured. Pulse Wave Transit Time was calculated. Both the wireless ECG sensor and the wireless pulse wave sensor were small sized and powered by button battery; the precision of time synchronization among sensors was less than 1 ms. The calculated Pulse Wave Transit Time changed slowly with deep breathing. The system is able to work smoothly for continuous monitoring of Pulse Wave Transit Time in working conditions.