A high-speed data acquisition system for ECT based on the differential sampling method

被引：42

作者：

Wang, BL ^{[1
]}

Ji, HF ^{[1
]}

Huang, ZY ^{[1
]}

Li, HQ ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Control Sci & Engn, Inst Instrumentat, Hangzhou 310027, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2005年 / 5卷 / 02期

基金：

国家科技攻关计划;

关键词：

capacitance measurement; tomography;

D O I：

10.1109/JSEN.2004.842627

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A new capacitance measuring circuit based on differential sampling methods for electrical capacitance tomography has been developed. The measured capacitance is only charged and discharged once and no noise is created by the measurement principle. A capacitance measurement system for 12 electrodes is constructed based on the new measurement circuit. Test results show the data acquisition time for 66 capacitances (for reconstructing one image) is less than 1.25 ms.

引用

页码：308 / 312

页数：5

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