基于Camera Link的高可靠性图像数据传输设计  

Design of High Reliability Image Data Transmission Based on Camera Link

作　　者：甄国涌[1,2,3] 丁润琦[1,2] 张凯华 ZHEN Guo-yong;DING Run-qi;ZHANG Kai-hua(North University of China,Taiuan 030051,China;State Key Laboratory of Electronic Testing Technology,Taiyuan 030051,China;Key Laboratory of Instrument Science and Dynamic Testing,Ministry of Education,Taiyuan 030051,China)

机构地区：[1]中北大学,山西太原030051 [2]电子测试技术国家重点实验室,山西太原030051 [3]仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《仪表技术与传感器》2021年第1期43-47,共5页Instrument Technique and Sensor

摘　　要：针对高速图像数据在传输时可靠性低的问题,分别从硬件和逻辑两方面对图像传输接口进行优化设计。在硬件上,采用Camera Link为高速图像数据传输接口;在逻辑上,采用FPGA为主控制器,通过对Camera Link接口时序优化设计,保证了数据传输的准确性,并且通过采用CRC+ECC双校验结合的方法实现了图像数据在高速传输时多错重传、少错纠正,提高了数据传输的可靠性。经试验验证,该设计可实现在短距离、大数据量的情况下可靠传输,在较长距离传输时误码率低于一百亿分之一。Aiming at the problem of low reliability of high-speed image data during transmission,the image transmission interface was optimized from the aspects of hardware and logic.On the hardware,Camera Link was used as the high-speed image data transmission interface,on the logic,FPGA was used as the main controller.The timing optimization design of the Camera Link interface ensured the accuracy of data transmission,and by using CRC+ECC double check,the combined method realized multiple retransmissions and fewer error corrections of image data during high-speed transmission,and improved the reliability of data transmission.It is verified by experiments that the design can achieve reliable transmission in the case of short distances and large amounts of data,and the bit error rate is less than one in ten billion in the case of long distance transmission.

关 键 词：Camera Link 图像传输 双校验 时序优化 高速传输 低误码率 

分 类 号：TN919[电子电信—通信与信息系统]