基于ECT技术的气/固两相流系统设计  

Design of gas/solid two-phase flow system based on ECT technology

作　　者：马敏 闫超奇 

机构地区：[1]中国民航大学电子信息与自动化学院,天津300300

出　　处：《现代电子技术》2017年第24期80-84,共5页Modern Electronics Technique

基　　金：国家自然科学基金(61401466);中国民航大学科研启动基金项目(2013QD01S)

摘　　要：针对目前气/固两相流检测中流型识别的精度和速度制约等问题,设计基于Xilinx Spartan-3E系列FPGA芯片的圆周型16电极ECT检测系统,采取DDR2存储技术以及采用USB总线技术代替传统的PCI总线技术,明显提高了电学成像速度。同时应用数字正交解调代替模拟解调,有效提高了解调的实时性和系统成像精度。实验结果表明,该系统性能稳定、处理速度快、采样精度高,在实际工业应用方面有一定的参考价值。In view of the difficulties of flow pattern recognition accuracy and speed control in gas/solid two-phase flow （tetec- tion, a circular 16-electrode ECT detection system based on a Xilinx Spartan-3E FPGA chip is designed in this paper. DDR2 storage technology and USB bus technology are used instead of the traditional PCI bus technology, which can significantly im- prove the electrical imaging speed. The digital orthogonal demodulation is used instead of the analog demodulation, which can ef- t^etively improve the real-time performance and the imaging accuracy of the system. The simulation experiment shows that Ihe system possesses the advantages of stability, fast processing speed and high sampling accuracy, and has a certain reference value in practical industrial applications.

关 键 词：气 固两相流 检测系统 数字正交解调 工业应用 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置] TP216[自动化与计算机技术—控制科学与工程]