基于FPGA+SDRAM图像传输控制系统
Image Transmission Control System Based on FPGA+SDRAM
唐维平 1刘洋 1岳俊哲 1易进 1张瑞1
作者信息
- 1. 中北大学仪器与电子学院 太原 030051;中北大学山西省光电信息与仪器工程技术研究中心 太原 030051
- 折叠
摘要
为了解决高帧率图像采集系统中各个模块间传输速率不同而出现数据丢失的问题,论文采用FPGA+SDRAM来实现图像传输的方案.文中以光栅衍射效应测量入射激光方位角、俯仰角和波长等特征参数为需求背景,采用CMOS探测器、FPGA、SDRAM、USB等构成的小型硬件架构,并在此基础上,对SDRAM控制方式进行了优化,通过对乒乓模式提出改进,传输标志位控制地址指针指向,实现图像的完整采集.在激光高警系统应用中,使用FPGA+SDRAM的方式实现硬件采存,使用USB接口将数据传输到上位机,利用Matlab对各点在XY轴上的座标进行求解,最后通过光学知识计算出激光波长方位角等特征参数的方式验证系统的实用性.本试验采用850 nm波段的激光进行了检测,其波长测量精度在9nm以内.
Abstract
In order to solve the problem of data loss caused by the different transmission rates between each module in the high frame rate image acquisition system,FPGA+SDRAM is used to realize the image transmission scheme.In this paper,the grat-ing diffraction effect is used to measure the characteristic parameters such as azimuth,pitch angle and wavelength of the incident la-ser as the background,and a small hardware architecture composed of CMOS detector,FPGA,SDRAM,USB,etc.,and on this ba-sis,the SDRAM control mode is optimized.In the application of laser high-alarm system,FPGA+SDRAM is used to realize hard-ware storage,USB interface is used to transmit data to the host computer,Matlab is used to solve the coordinates of each point on the XY axis,and finally the practicability of the system is verified by calculating the characteristic parameters such as laser wave-length azimuth angle through optical knowledge.In this test,a laser in the 850 nm band is used for detection,and the wavelength measurement accuracy is within 9 nm.
关键词
激光告警/SDRAM/控制设计/FPGAKey words
laser alarm/SDRAM/control design/FPGA引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据