基于FPGA和USB的多通道心内电信号采集系统

Multichannel ECG Acquisition System Based on FPGA and USB

根据心内电信号特点和心内电信号采集的系统要求,提出了一种基于FPGA和USB的多通道采集方案。详细介绍了系统中信号预处理模块包括放大电路和滤波电路的设计、AD7606与FPGA的接口电路设计、CY7C68013A与FPGA的接口电路设计以及FPGA程序和上位机程序的设计,FPGA程序包括AD转换控制模块、FIFO缓存模块以及数字滤波模块和数据传输控制模块等。经过实际测试,系统能够对信号进行有效滤波,并将采集到的数据发送至上位机进行存储和显示。

According to the characteristics of ECG signal and requirements of ECG signal acquisition system,this study presents an ECG signal acquisition system with multichannel solution based on FPGA and USB.Design of signal preprocessing modules includes amplifier and filtering circuits,interface circuits of AD7606 and FPGA,interface circuits of CYC68013 A and FPGA,FPGA program and PC program in details.The FPGA program includes modules of AD converter control,FIFO buffer,digital filter and data transmission control.According to test results,the system can effectively filter the signal and send the collected data to PC for storage and display.