基于FPGA的线阵CCD实时图像采集系统  

Image real-time acquisition system based on FPGA and linear CCD

作　　者：章金敏[1] 张菁[1] 陈梦苇[1] 

机构地区：[1]武汉理工大学理学院,湖北武汉430070

出　　处：《微型机与应用》2015年第13期42-44,48,共4页Microcomputer & Its Applications

摘　　要：设计了一种基于现场可编程逻辑器件的线阵CCD实时图像采集系统。系统采用线阵CCD TCD2252D作为图像传感器,使用CCD专用信号处理芯片AD9826对CCD信号去噪并实现高速A/D转换,同时用USB接口芯片完成CCD数据的传输,最后在上位机显示采集的图像数据。整个系统由基于Verilog的CCD驱动模块、CCD输出信号处理模块、双口RAM缓存模块、USB接口控制模块等组成,结合上位机模块实现对CCD输出图像的准确采集、显示和保存。实验结果表明,该系统能实时采集和显示图像信息,USB传输速度可达28 MB/s,系统实时性好。This paper presents a real-time image acquisition system which based on the linear CCD of FPGA. In the system,TCD2252 D, the linear CCD, is used as image sensor, and AD9826, a complete analog signal processor for CCD, is used to sample the CCD analogy signal and realize high-speed A/D conversion, then CCD digital data are transferred to computer through USB interface chip, displayed in real time. The whole system consists of CCD driving module, CCD signal processing module, dual-port RAM module and USB interface module. The system can realize accurate acquisition, display and storage of CCD output pixel combined with USB application program. The result shows, the system can acquire and display the CCD image in real-time, and USB transmission speed can reach 28 MB/s.

关 键 词：实时采集 电荷耦合器件 现场可编程逻辑器件 信号处理 

分 类 号：TN36[电子电信—物理电子学]