| 数字化生物电阻抗成像系统 |
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| 引用本文： | 曲志刚,王化祥,靳世久.数字化生物电阻抗成像系统[J].电子测量与仪器学报,2006,20(4):10-14. |
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| 作者姓名： | 曲志刚 王化祥 靳世久 |
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| 作者单位： | 1. 天津大学精密测试技术与仪器国家重点实验室,天津,300072
2. 天津大学自动化学院,天津,300072 |
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| 基金项目： | 本项目为国家自然科学基金资助项目（编号：60472077,50337020,60301008）;河南省自然科学基金资助项目（编号：0511012100）. |
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| 摘 要： | 本文针对生物电阻抗成像技术中模拟滤波及解调环节存在的速度瓶颈和精度问题，设计了数字化生物电阻抗成像系统。系统基于DSP与FPGA协同运行，为硬件升级改进提供了开发空间；研究了基于Cyclone芯片的数字滤波以及数字解调算法；对算法进行了基于Testbench的仿真。系统仿真调试结果表明，该设计提高了系统成像速度和精度。
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| 关 键 词： | 生物电阻抗成像 FPGA DSP 数字滤波 数字解调 |
| 收稿时间： | 2005-04 |
| 修稿时间： | 2005-04 |
Digitalized Biological Electrical Impedance Tomography System |
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| Qu Zhigang,Wang Huaxiang,Jin Shijiu.Digitalized Biological Electrical Impedance Tomography System[J].Journal of Electronic Measurement and Instrument,2006,20(4):10-14. |
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| Authors: | Qu Zhigang Wang Huaxiang Jin Shijiu |
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| Abstract: | To solve the bottleneck of imaging speed and the issuing of precision for analogue tilter and analogue demodulation of biological electrical impedance tomography, this paper designed the digitalized system of biological electrical impedance tomography. The designed system is based on the combination of DSP and FPGA to provide space for the future upgrading of hardware, which includes the digital tilting and the digital demodulating algorithm on the basis of the Cyclone chip and simulates the algorithms above based on Testbench. The resuhs of simulation and system debugging show that the design can improve the speed and the precision of the imaging process. |
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| Keywords: | biological electrical impedance tomography FPGA DSP digital tilting digital demodulation |
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