| 基于FPGA的生物电阻抗成像系统设计 |
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| 引用本文： | 丁忠林,陈晓艳,吴佳妮.基于FPGA的生物电阻抗成像系统设计[J].电子技术应用,2012,38(5):33-36. |
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| 作者姓名： | 丁忠林 陈晓艳 吴佳妮 |
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| 作者单位： | 1. 天津科技大学计算科学技术与信息工程学院,天津,300222
2. 天津科技大学电子信息与自动化学院,天津,300222 |
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| 基金项目： | 天津市自然科学基金，天津科技大学校基金 |
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| 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。
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| 关 键 词： | 电阻抗断层成像技术 正交解调 激励源 重建图像 现场可编程门阵列 |
Design of bioelectrical electrical impedance tomography system based on FPGA |
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| Ding Zhonglin
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Chen Xiaoyan
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Wu Jiani.Design of bioelectrical electrical impedance tomography system based on FPGA[J].Application of Electronic Technique,2012,38(5):33-36. |
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| Authors: | Ding Zhonglin Chen Xiaoyan Wu Jiani |
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| Affiliation: | 1.College of Computer Science and Information Engineering,Tianjin University of Science and Technology,Tianjin 300222,China; 2.College of Electronic Information and Automation,Tianjin University of Science and Technology,Tianjin 300222,China) |
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| 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. |
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| Keywords: | electrical impedance tomography quadrature demodulation signal generator image redraw FPGA |
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