Gupta R, Bera J N, Mitra M
University of Calcutta, Applied Physics, Kolkata, Calcutta, India.
J Med Eng Technol. 2012 Oct;36(7):358-65. doi: 10.3109/03091902.2012.712200. Epub 2012 Sep 11.
This paper illustrates a wireless system developed for offline ECG transmission and its remote processing. At the transmit end, a standalone embedded system collects short duration ECG samples from the source, stores them in a RAM and then encodes these using a customized bi-phase modulation for offline transmission in ISM band. At the receive end, another embedded system extracts ECG data from the demodulated output of the wireless receiver and delivers to a desktop computer using the serial port. An application software stores these samples in a text file. At first, the bit error and packet error are computed from the received dataset. Then, computed ECG wave durations and intervals along with lead data plot are generated on a Graphical User Interface for preliminary level diagnosis. Test results with synthetic ECG from PTB diagnostic ECG database (ptb-db) for short range of communication are reported.
本文阐述了一种为离线心电图传输及其远程处理而开发的无线系统。在发射端，一个独立的嵌入式系统从源采集短时长的心电图样本，将其存储在随机存取存储器（RAM）中，然后使用定制的双相调制对这些样本进行编码，以便在工业、科学和医疗（ISM）频段进行离线传输。在接收端，另一个嵌入式系统从无线接收器的解调输出中提取心电图数据，并通过串口传送到台式计算机。一个应用软件将这些样本存储在文本文件中。首先，根据接收到的数据集计算误码和分组错误。然后，在图形用户界面上生成计算出的心电图波持续时间和间期以及导联数据图，用于初步诊断。报告了使用来自PTB诊断心电图数据库（ptb - db）的合成心电图进行短距离通信的测试结果。
