Hunag Li-Jie, Yang Sheng, Liu Ai-Jun, Wang Ya-Jun
Department of Precision Machinery and Precision Instrumentation, University of Sci. And Tech. of China, Hefei, Anhui 230027, China.
Zhongguo Yi Liao Qi Xie Za Zhi. 2008 Nov;32(6):419-23.
In this paper, a T wave alternans detection system based on wireless and USB communication is presented. The ECG signal is amplified in the first step. The amplifier has a gain of 2000 and the CMRR is 80dB. Then the signal is sampled with a 12-bit AD converter. At last, the sample result is transmitted to the PC via wireless communication and USB bus. In the PC, the T wave alternans are detected using the spectral method. Results show that this system has high data transmission rate and real time data processing capability, and can realize the detection of T wave alternans.
本文提出了一种基于无线和USB通信的T波交替检测系统。第一步对心电图信号进行放大。该放大器增益为2000，共模抑制比为80dB。然后用12位AD转换器对信号进行采样。最后，采样结果通过无线通信和USB总线传输到PC机。在PC机中，采用频谱方法检测T波交替。结果表明，该系统具有较高的数据传输速率和实时数据处理能力，能够实现T波交替的检测。
