基于光纤通道的红外视频数据采集系统

为了把红外视频数据从光电跟踪设备旋转的机上摄影系统传输并存入到机下数据采集系统中,设计了一套红外视频数据光纤传输、存储系统。视频信号电平转换后由FPGA打包组帧,经过物理层芯片协议转换,电/光转换后进行光纤传输,数据经过光纤旋转连接器进入机下数据采集系统。该系统集成了光电转化、物理层解码、数据的恢复,然后经过PCI总线与本地计算机进行DMA传输,把数据存入SATA硬盘中。取代了传统视频采集卡,集数据传输、存储为一体,简化了系统结构。

Infrared Video Data Acquisition System Based on Fiber Channel

In order to transmit infrared video data from the rotary photography sampling system on the top of the photoelectric equipment to the bottom data acquisition system,a system of infrared video data acquisition based on fiber optical transmission was designed.After video signal level changed,the data wag packed in frame by FPGA,and passed through protocol transformed by physical chip,transformed to optic signal into fiber,finally stored by acquisition system with the portion of optic-to-electric transfor-mation,physical decoder,data recovery were integrated together through a rotary connector.DMA transmission was carried on through PCI bus,and the video data Was stored into local SATA disks of PC.This system replaces traditional data acquisition sys-tem,integrates data transmission and storage function and simplifies system structure.