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9 nm以内。
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.
作者
唐维平
刘洋
岳俊哲
易进
张瑞
TANG Weiping;LIU Yang;YUE Junzhe;YI Jin;ZHANG Rui(School of Instrument and Electronics,North University of China,Taiyuan 030051;Engineering and Technology Research Center of Shanxi Provincial for Optical-Electric Information and Instrument,North University of China,Taiyuan 030051)
出处
《舰船电子工程》
2024年第3期95-100,共6页
Ship Electronic Engineering
基金
国家自然科学基金项目(编号:62105302)资助。
