基于ECT的高速数据采集系统设计  

ECT-based high-speed data acquisition system design

作　　者：马敏[1] 吴海超[1] 

机构地区：[1]中国民航大学航空自动化学院,天津300300

出　　处：《电子技术应用》2014年第1期72-74,78,共4页Application of Electronic Technique

基　　金：国家自然科学基金青年科学基金项目(61102096);天津市自然科学基金面上项目(11JCYBJC06900)

摘　　要：数据采集系统的速度制约了电容层析成像技术在航空发动机气路监测系统等高速设备中的应用。为此,设计了一种基于FPGA的新型电容数据采集系统,采用DDR2存储技术和PCI总线技术实现了数据的高速传输。同时应用卡尔曼滤波器代替传统的FIR滤波器,有效提高了滤波效率。测试结果表明,该系统具有抗干扰能力强、采样精度高、处理速度快等优点。The application of electrical capacitance tomography to high-speed devices （such as aero-engine gas path monitoring system） has been restricted by the speed of the data acquisition system. To address this problem, a novel FPGA-based capacitance data acquisition system is designed in this paper. DDR2 memory and PCI bus technology are adopted to realize high speed data transmission. Additionally, the traditional FIR filter is replaced by Kalman filter, which effectively improves the filtering efficiency. Experimental results show that the system possesses the advantages of anti-interference ability, high sampling accuracy and fast processing speed.

关 键 词：航空发动机 FPGA 数据采集 卡尔曼滤波器 DDR2 PCI 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]