基于高速FIFO的远程图像数据采集存储系统∗

摘要

In view of the high data capacity and high-speed features of image signal,the remote image data acquisi-tion and storage system is designed. The hardware system is composed of a FPGA for central controller and a IDT72V285 for high-speed FIFO. The data acquisition and storage system is used for acquisition,encoding,trans-mission and storage of two channels of image data. Subsequently, the data is read back and reconditioned in the analysis computer. The design of high-speed FIFO,writing data to FLASH and remote data reading are key parts in the overall system. On the basis of the practical tests,it is proved that the data acquisition and storage system is sta-ble and reliable,which can satisfy the practical requirements.%针对图像信号数据容量大、速度快的传输特点,设计了基于高速缓存FIFO的远程图像数据采集存储系统。硬件系统采用FPGA作为中央控制单元,IDT72V285作为图像数据的高速缓存FIFO,用以采集、编帧、传输和存储两路图像信号,最终通过计算机回读数据,并实现对图像数据的还原处理。高速缓存FIFO设计、FLASH写入和数据远程读取是整个系统的关键部分。经试验验证,该图像数据采集存储系统性能稳定,数据存储可靠,满足实际测试要求。