一种高速图像数据采集存储系统设计

Design of High-Speed Image and Data Storage System

针对视频图像信号数据量大、传输码率高、信号采集存储过程复杂等特点,提出并设计了一种基于FPGA和FLASH的高速图像数据采集存储系统;该系统采用LVDS图像数据传输方式,利用以FPGA作为主控单元完成对LVDS网络的实时图像数据采集,并将采集到的数据经大容量FIFO缓存后写入FLASH中,最后通过数据读取装置将数据传送至上位机,上位机分析图像数据结构后将数据还原为原始图像实时显示;实地图像采集试验结果表明所设计的图像采集存储系统通过交错双页面编程方式,可以实现30MB/s码率的高速图像数据的实时采集存储,并无丢帧、误帧现象,具有较高的实际应用价值。

According to the characteristics of the image data signal, which has huge amount of data, high data transmission code rate, and is very complex to collect and store, an Image data acquisition and storage system based on FPGA and FLASH was proposed. The system takes LVDS image data as transmission mode, FPGA as the main control unit to collect the real--time image data from LVDS network in real time. Through large--capacity FIFO buffers, the collected data will be written into the FLASH. Finally, the data will be passed to the PC through the reading device. Then display in its original image on PC after analyzing of image data structure. Image acquisition experiment results show that the designed system realize real--time data storage of high--speed image data at the bit rate of 30MB/s and without frame loss and frame error, which has high application value.