基于万兆以太网的Cameralink数字图像光纤传输系统

Optical Fiber Transmission System of Cameralink Digital Image Based on 10 Gigabit Ethernet

针对当前工业相机在传输高分辨率和高帧频图像时的传输困难问题,设计了以FPGA为核心处理器的Cameralink数字图像光纤传输系统。系统采用SelectIO接口模块代替接口芯片,经数据处理后再通过万兆以太网模块完成2 Medium模式的Cameralink图像数据与AXI4-stream数据流之间的相互转换。实验表明:对于640×512分辨率、1 kHz帧频的2 Medium模式的Cameralink图像数据,可转化为AXI4-stream数据流进行高速、稳定的光纤传输。并在接收端将AXI4-stream数据流完整、实时地还原回2 Medium模式的Cameralink图像数据,解决了传输困难的问题,传输带宽为3.93 Gbit/s。

Aiming at the difficulty of transmitting high-resolution and high frame rate images of industrial cameras,a Cameralink digital image optical fiber transmission system based on FPGA was designed.The system used SelectIO interface module to replace the interface chip.It completes the mutual conversion between Cameralink image data in 2 Medium mode and AXI4-stream data through data processing and 10 Gigabit Ethernet module.Experiments show that Cameralink image data in 2 Medium mode with 640×512 resolution and 1 kHz frame rate can be transformed into AXI4-stream data for high-speed and stable optical fiber transmission.At the receiving end,the AXI4-stream data is completely and real-time restored to the Cameralink image data in 2 Medium mode,which solves the problem of difficult transmission,and the transmission bandwidth is 3.93 Gbit/s.