A portable and comfortable wireless ECG monitoring system composed of fabric electrodes and a monitoring terminal was proposed,which is essential to continuous ECG monitoring. The ECG signal acquired could be processe...A portable and comfortable wireless ECG monitoring system composed of fabric electrodes and a monitoring terminal was proposed,which is essential to continuous ECG monitoring. The ECG signal acquired could be processed and stored in the monitoring terminal. The HR was got and transmitted to any devices through a Bluetooth interface. The experimental results in resting and walking showed that the ECG monitoring system could acquire the ECG signal steadily,continuously and precisely.展开更多
目的:设计一种心电信号无线传输系统,以提高动态心电监护仪中心电信号的无线传输性能。方法:该系统由心电信号采集模块、无线收发模块、无线通信协议模块和数字滤波模块组成。心电信号采集模块由数字接口电路、A/D转换器微处理器、心电...目的:设计一种心电信号无线传输系统,以提高动态心电监护仪中心电信号的无线传输性能。方法:该系统由心电信号采集模块、无线收发模块、无线通信协议模块和数字滤波模块组成。心电信号采集模块由数字接口电路、A/D转换器微处理器、心电放大电路组成。无线收发模块由无线射频单元、晶振电路、射频电路、调试串口、寄存器、电源模块和复位电路组成。无线通信协议模块由数据链路层与物理层组成,其中数据链路层设计自动应答和调频2种机制。数字滤波模块主要由数字滤波器、信号输入模块、延时单元、系数寄存器等组成,其中数字滤波器采用等波纹法设计,并将心电信号转换为输出序列,实现信号去噪。将基于ZigBee组网和通用分组无线业务(general packet radio service,GPRS)的心电信号无线传输方法和基于无线组网模块的心电信号无线传输方法作为对比方法,验证该系统在不同近程传输距离和不同远程传输距离下的心电信号无线传输性能。结果:相比其他2种方法,在不同近程传输距离和不同远程传输距离下,该系统的心电信号无线传输平均速率和成功传输比例较高,平均用时及平均重传数较低。结论:该系统能够实现动态心电监护仪中心电信号高效、平稳、清晰的无线传输。展开更多
文摘A portable and comfortable wireless ECG monitoring system composed of fabric electrodes and a monitoring terminal was proposed,which is essential to continuous ECG monitoring. The ECG signal acquired could be processed and stored in the monitoring terminal. The HR was got and transmitted to any devices through a Bluetooth interface. The experimental results in resting and walking showed that the ECG monitoring system could acquire the ECG signal steadily,continuously and precisely.
文摘目的:设计一种心电信号无线传输系统,以提高动态心电监护仪中心电信号的无线传输性能。方法:该系统由心电信号采集模块、无线收发模块、无线通信协议模块和数字滤波模块组成。心电信号采集模块由数字接口电路、A/D转换器微处理器、心电放大电路组成。无线收发模块由无线射频单元、晶振电路、射频电路、调试串口、寄存器、电源模块和复位电路组成。无线通信协议模块由数据链路层与物理层组成,其中数据链路层设计自动应答和调频2种机制。数字滤波模块主要由数字滤波器、信号输入模块、延时单元、系数寄存器等组成,其中数字滤波器采用等波纹法设计,并将心电信号转换为输出序列,实现信号去噪。将基于ZigBee组网和通用分组无线业务(general packet radio service,GPRS)的心电信号无线传输方法和基于无线组网模块的心电信号无线传输方法作为对比方法,验证该系统在不同近程传输距离和不同远程传输距离下的心电信号无线传输性能。结果:相比其他2种方法,在不同近程传输距离和不同远程传输距离下,该系统的心电信号无线传输平均速率和成功传输比例较高,平均用时及平均重传数较低。结论:该系统能够实现动态心电监护仪中心电信号高效、平稳、清晰的无线传输。