电容层析成像系统的实用化设计  

Practical System Design for Electrical Capacitance Tomography

作　　者：陆耿[1] 彭黎辉[1] 姚丹亚[1] 张宝芬[1] 

机构地区：[1]清华大学自动化系检测及电子技术研究所,北京100084

出　　处：《计量学报》2004年第3期241-243,261,共4页Acta Metrologica Sinica

基　　金：国家自然科学基金(60204003)

摘　　要：介绍一种实用化的电容层析成像系统,它使用单片机作为核心控制单元,并采用基于交流激励的微电容测量电路。系统可配置为8或12电极模式;测量数据通过RS 485总线传送到成像计算机,波特率可达1 5Mbps。数据采集速率达200帧 s,信噪比为34 8dB。静态实验表明该系统可应用于实验室研究。A practical system for Electrical Capacitance Tomography (ECT), which is based on AC measurement circuit and micro controller, is described. The system can be configured as 8 or 12-electrode modes. The measurement data can be transferred by RS-485 to the host computer for image reconstruction at the baud rate up to 1.5 Mbps. The data acquisition speed can be up to 200 frames of image per second with signal-to-noise ratio of 34.8 dB. Static experiment shows that the system can be used for laboratory research.

关 键 词：计量学 两相流 电容层析成像 微电容测量 

分 类 号：TB973[一般工业技术—计量学]