一种可穿戴式心电采集系统的设计

Design of a wearable ECG acquisition system

结合蓝牙4.0通信协议,提出了一种便携式心电采集系统的设计方法,其中包括了硬件电路和软件配置的实现过程.系统设计使用集成芯片ADS1293来代替传统的模拟采集前端,以利于避免信号传输时与外界噪声的耦合,减少外围器件,缩小体积.以Tiva Cortex M4为MCU,完成对ADS1293和蓝牙芯片CC2564的初始化以及它们之间的数据转换与传输.最后以蓝牙模块为发送端,Android设备为客户端显示心电数据,两者利用Socket机制进行蓝牙连接与传输数据.双导联的测量方式能在保证心电信号的准确性的同时简化使用步骤.这种小体积、易操作的设计方案为可穿戴医疗设备提供基础.

A new method based on Bluetooth protocol version 4. 0 was proposed to design a portable ECG （Electrocardiograph） acquisition system. This method included the introduction of hardware circuits and software configurations. The system used the latest integrated Front-ended chip ADS1293 to take place of the traditional analog pre-amplifier and acquisitions stage in order to avoid noise coupling and reduce the volume. The data transformation and transmission between ADS1293 and the Bluetooth chip CC2564 was accomplished through Tiva Cortex M4, the MCU. Finally, the connection and data transmission between the Bluetooth module and the Android device which was used for display by Socket. The double-lead measurement could simplify the use steps while ensuring the accuracy of the ECG data. This small volume and easy-to-operate design provides the basis for wearable medical devices.