| 电阻层析成像系统信号预处理模块的设计 |
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| 引用本文： | 王斌斌,谭超,董峰. 电阻层析成像系统信号预处理模块的设计[J]. 仪器仪表用户, 2006, 13(6): 124-126 |
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| 作者姓名： | 王斌斌 谭超 董峰 |
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| 作者单位： | 天津大学,电气与自动化工程学院,天津,300072 |
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| 基金项目： | 国家自然科学基金;天津市应用基础计划资助项目 |
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| 摘 要： | 电阻层析成像技术在两相流中有广阔的应用前景。随着科技的发展，制约ERT系统实时性的不再是计算机数据处理能力和A／D转换性能．取而代之的是解调滤波环节成为整个系统中耗时最多的部分。本文着重分析比较了几种解调方法的优缺点，并根据自身系统的特点选用了乘法解调.设计并仿真了滤波器的性能。
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| 关 键 词： | 电阻层析成像 实时性 乘法解调 滤波器 |
| 文章编号： | 1671-1041（2006）06-0124-03 |
| 收稿时间： | 2006-07-15 |
| 修稿时间： | 2006-07-15 |
The design of signal pretreatment circuit for electrical resistance tomography system |
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| WANG Bin-bin,TAN Chao,DONG Feng. The design of signal pretreatment circuit for electrical resistance tomography system[J]. Electronic Instrumentation Customer, 2006, 13(6): 124-126 |
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| Authors: | WANG Bin-bin TAN Chao DONG Feng |
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| Abstract: | Electrical Resistance Tomography is now in a great prospective in two-phase flow. As the development of science and technology, the real-time performance of ERT system is no longer restricted by data processing and ND transforming, but by the demodulation and filters which cost the most time in the operation of ERT system, in this paper, several methods of demodulation ware introduced, and basing on the application characteristic of ERT system, the multiplication demodulat}on was adopted for this kind of circumstance; the filters ware designed and simulated. |
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| Keywords: | Electrical Resistance Tomography real-time performance multiplication demodulation Filter |
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