基于FPGA的心音监测系统的硬件设计

The Hardware Design of Heart Sound Monitoring System Based on FPGA

听诊器是临床上用来监测心音的普遍技术,但传统的听诊器噪音强,对医生经验要求高。利用FPGA技术对心音信号进行采集,具有采集数据传输速度快的优点,在噪音干扰下可提取出有用的心音信号。设计并搭建了基于FPGA的心音监测系统的硬件电路,主要包括预处理电路、AD转换电路、液晶显示电路和FPGA模块设计等。

Stethoscope is used to monitor clinical heart sounds,but the noise is strong,which has high demands on doctors’ xperience. The FPGA technology is used to analyse the heart sound signal and extract the useful heart sound signals with he high data transmission speed under the interference of noise. This paper designed and built the hardware circuit of heart ound monitoring system based on FPGA including pretreatment, AD conversion circuit, liquid crystal display circuit and FPGA module design, etc.