节点文献
基于FPGA的生物电阻抗成像系统设计
Design of bioelectrical electrical impedance tomography system based on FPGA
【摘要】 根据电阻抗断层成像技术要求,设计了以Spartan3E系列XC3S500E FPGA为核心的16电极生物电阻抗成像系统,系统嵌入8 bit微处理器PicoBlaze实现逻辑控制并产生激励信号实现高速A/D采集及实现数字解调,通过RS232将采集数据传输到PC机,重建人体内部的电阻率分布或其变化图像。为广泛应用研究电阻抗断层成像技术提供一种硬件设计方案。
【Abstract】 According to requirements of electrical impedance tomography,the 16 electrode bioelectrical electrical impedance system was designed in this paper,which embedded 8 bits microprocessor PicoBlaze to realize logic control for generating excitation signals and high-speed A/D acquisition,realization of digital demodulation and the data was be transferred to PC through RS232,redraw the human body resistivity distribution or change images.The system provides a very good hardware design scheme for widely research of electrical impedance tomography.
【Key words】 electrical impedance tomography; quadrature demodulation; signal generator; image redraw; FPGA;
- 【文献出处】 电子技术应用 ,Application of Electronic Technique , 编辑部邮箱 ,2012年05期
- 【分类号】TN791;TP391.41
- 【被引频次】10
- 【下载频次】220