基于FPGA的遥感相机多模式数传转接电路设计  

Design of camera data transferring system based on FPGA

作　　者：徐磊[1] 崔雪楠[1] 

机构地区：[1]北京空间机电研究所,北京100074

出　　处：《电子测量技术》2015年第9期13-18,共6页Electronic Measurement Technology

摘　　要：为满足遥感相机视频处理电路的测试需求,研究并设计了一种遥感相机数传转接电路,对视频处理电路处理过的不同模式的图像数据进行格式转换,再通过Cameralink接口与上位机进行图像数据传输并实时成像,同时系统采用乒乓操作提高图像数据的传输速率。主要描述系统的主要组成和FPGA模块化设计的实现方法。以Xilinx公司XC2V型号FPGA为核心,采用VHDL语言实现图像数传转换的逻辑设计,利用RS232接口接收上位机指令实现不同模式图像信号的选择输出,对不同模式的图像信号进行格式转换。实际应用表明,本系统成像结果准确,具有较好的灵活性,能够满足多种遥感相机视频处理电路的测试需求。To satisfy the needs for testing video process circuit of satellite cameras,this paper researched and designed an image data transformation system of remote sensing camera,which can convert the format of image data processed by video electronic systems and realize the transformation of image data in different modes.Then,the image transformation and real-time imaging will be finished on host computer through Cameralink.This paper mainly describes the major components of the system and the implementation method of FPGA＇s modular design.An FPGA of Xilinx XC2 V was adopted to make a center unit,the logic of image data transformation is developed with VHDL.The RS-232 interface is used to receive instructions from the host computer,and different types of signals are outputted and transformed depending on the instructions.Practical applications show that the imaging result of the system is clear and accurate,the transform system is flexible and can work well.The design meets the requirements of testing video process circuit in several different types of satellite cameras.

关 键 词：数传 CAMERALINK FPGA 

分 类 号：TP337[自动化与计算机技术—计算机系统结构]