基于STM32的便携式脑电信号采集处理系统设计

Acquisition and processing system based on STM32 portable EEG

为实现脑电信号的实时采集和显示,设计了一个基于STM32f103的便携式脑电信号采集处理系统。该系统通过无线模块接收经过放大处理后的数字脑电信号,通过微处理器STM32f103内置的FIR滤波、功率谱估计等算法对脑电信号进行处理,将采集到的数据存储到SD卡里,最后通过触屏控制系统在TFT屏上显示出清晰、稳定的脑电信号。该系统具有体积小、功耗低、抗干扰能力强和便于携带等特点。

To achieve real-time collection and display of EEG, A portable EEG signal acquisition and processing system has been designed based on STM32f103. The system receives the digital signals of the amplified EEG through the wireless module, processes EEG through build-in FIR filtering and power spectrum estimation algorithm in the microprocessor STM32f103, stores data collected onto the SD card and displays a clear and steady EEG on the TFT screen through touchscreen control system. The whole system is featured by small size, low power consumption, strong anti-jamming capacity and its potability.