基于蓝牙4.0的微型低功耗眼电图(EOG)系统

Low Energy to Low Power to Low Size:A Miniature Low Power EOG Unit Utilising Bluetooth Low Energy

眼电信号很微弱,需要设置前置放大器和滤波器,用于探测微小的生物信号并将信号滤波,传输到ADC.设计了一种基于蓝牙4.0的微型低功耗眼电探测系统.无线功能的实现是基于BLE Soc芯片CC254,该芯片基于蓝牙低功耗技术(BLE)进行无线数据传输,距离大于100 m,速度高于16 Kps,平均功率低于26.7 mW,待机功率低于2.7μW.能较为成功地提取眼电信号,并基于蓝牙4.0进行无线传输.

A Miniature Low Power EOG Unit was designed to extract EOG signal and transmit based on BLE technology .EOG signal is very weak , in analogue circuit , amplifier and filter is used to detests electrophysio-logical signal and transmits to ADC .Wireless is utilized based on BLE Soc chip CC 2540 .It is transmitted based on BLE technology Transmit distance is larger than 100m, speed larger 16 Kps, average power is lower than 26.7 mW and sleeping power is lower than 2.7 μW.The result of experience indicates that this circuit can detect EOG signal effectively and transmit wirelessly .