摘要
为实现基于线阵CCD成像原理的调焦调平系统的图像数据采集、上传与分析,设计了基于PXIe总线与FPGA的数据传输系统。系统采用FPGA夹层卡(FMC)架构,由夹层卡和载卡构成。夹层卡配备4个高速光纤通信接口,实现与高速图像输出设备的接口互联。载卡采用FPGA做为主控制器,实时接收夹层卡传输的图像数据,将其缓存至板载的DDR SDRAM后,通过PXIe接口传输至PC机。系统研制完成后,对10 Gbps传输速率下的光纤接口的数据传输性能进行了测试,得到了端正、线迹清晰的眼图;进行了PXIe接口的批量数据传输测试,结果表明FPGA发送的数据与上位机接收的数据完全一致,验证了方案的正确性及合理性。
A data transmission system based on PXIe bus and FPGA was designed to realize the acquisition,uploading and analysis of image data in the focusing and leveling system based on linear CCD imaging principle.The system uses FPGA mezzanine card(FMC)architecture,composed of mezzanine card and carrier card.The mezzanine card is equipped with four high-speed optical fiber communication interfaces to realize interface interconnection with high-speed image output equipment.The carrier card adopts FPGA as the main controller to receive the image data transmitted by the sandwich card in real time,cache it to the onboard DDR SDRAM,and then transmit it to PC through PXIe interface.After the development of the system,the data transmission performance of the optical fiber interface at the transmission rate of 10 Gbps was tested,and the correct and clear track eye diagram was obtained.The batch data transmission test of PXIe interface is carried out,and the results show that the data sent by FPGA is completely consistent with the data received by the host computer,which verifies the correctness and rationality of the scheme.
作者
蔡伟杰
吴洋
邹鹏
王友康
路美娜
宋茂新
Cai Weijie;Wu Yang;Zou Peng;Wang Youkang;Lu Meina;Song Maoxin(Anhui Institute of Optics and Fine Mechanics,Hefei Institutes of Physical Science,Chinese Academy of Science,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China;Key Laboratory of Optical Calibration and Characterization of Chinese Academy of Science,Hefei 230031,China)
出处
《电子测量技术》
北大核心
2021年第22期1-6,共6页
Electronic Measurement Technology
基金
王宽诚率先人才计划“卢嘉锡国际合作团队项目”(GJTD-2018-15)资助。
