摘要
为解决光电经纬仪上高速率、高分辨率实时图像传输及处理瓶颈问题。本文提出了基于光纤传输的实时图像处理平台体系架构思想,设计了以FPGA+多核DSP结构的图像处理单元,实现高速实时图像经光纤传输至处理单元。在此基础上,开发了自定义的光纤图像传输协议。利用该协议,使得图像处理系统与各个分系统之间的光纤互联,以及高速实时图像光纤传输至显示子系统,处理子系统和记录子系统。本文阐述了系统总体结构思想,系统硬件原理设计和软件设计,并对其中的图像光纤传输协议设计,多核DSP处理单元设计等进行详细介绍。搭建了实验测试平台,通过实验平台对系统进行测试和分析。实验结果表明,实时图像在光纤上进行3.125Gb/s、在FPGA与多核DSP之间进行3.125Gb/s速率上传输,系统稳定、可靠、误码率低,且具有处理能力强、抗电磁干扰性能强等优点,并已应用到实际工程项目中。
To solve the bottleneck problem of high-speed,high-resolution real-time image transmission and processing on photoelectric theodolite,a framework of real-time image transmission based on optical fiber and FPGA ＋ multi-core DSP processing unit is proposed,which means this design realized high-speed image transmit to multi-core DSP processing unit in real time.On this basis of that,a custom protocol of image transmission on optical fiber has been developed by using the protocol to interconnect image processing unit between various subsystems,such as displaying subsystem and recording subsystem.A collectivity design of system,hardware design and software design of system are described,especially designs of image transmission protocol and multi-core DSP processing unit,which are introduced in detail to build an experimental platform,test and analyze the system.Extensive experiments on the whole system validate that,real-time image transmission to subsystems gets rate at 2.5 Gb/s by optical fiber channel,and transmission gets rate at 3.125 Gb/s between the multi-core DSP and FPGA on multi-core DSP image processing unit.The system is stable,reliable and low error rate.It has advantages such as strong processing capacity,strong performance of anti-electromagnetism interference.This system has been applied in engineering projects.
出处
《光电工程》
CAS
CSCD
北大核心
2012年第4期136-144,共9页
Opto-Electronic Engineering
基金
中科院知识创新工程基金资助
关键词
光电经纬仪
多核DSP
嵌入式处理器
高速串行传输
图像传输协议
photoelectric theodolite
multi-core DSP
embedded processor
high-speed serial transmission
image transmission protocol
