基于FPGA的千兆以太网高速图像采集与传输系统的设计

发布时间：2018-04-01 01:23

  本文选题：FPGA　切入点：千兆以太网　出处：《内蒙古大学》2017年硕士论文

【摘要】：高速图像采集与传输系统基于FPGA强大的并行数据处理能力和千兆以太网的高速性和远距离传输的特性设计而成,它可以实时的对远距离的图像数据进行采集和传输。图像采集与传输系统对于运动目标的检测和导航与制导等技术的发展具有重要意义。本文的主要研究工作包括:1.高速图像采集与传输系统由图像采集电路板和CMOS图像传感器OV5640两部分构成。图像采集电路板由主控制器EP4CE15F23C8N、DDR2存储器MT47H64M16、以太网接口控制芯片RTL8211EG和扩展口等部分组成。2.对系统的图像采集电路板进行了实物的制作。首先对FPGA核心电路、DDR2存储器电路和Ethernet接口电路以及扩展口电路等原理图进行了设计。然后根据各个部分外围电路的连接特点进行了整体PCB的设计,主要包括叠层结构的设计、布局布线、阻抗计算以及电源平面划分等方面。最后完成了对电路板的焊接。3.对系统的软件进行了设计和编写。本次设计在QuartusⅡ 12.1软件开发平台上完成,采用Verilog硬件描述语言对系统的软件程序进行了设计,主要包括OV5640图像采集模块、DDR2图像存储模块、Ethernet图像传输模块以及时钟管理模块的软件逻辑结构设计。系统工作流程为:CMOS图像传感器首先将采集到的图像数据组合为位宽为32位的数据,然后将数据通过乒乓操作的方法存储到DDR2 SDRAM中,DDR2对图像数据实现缓存,最后通过UDP传输协议将缓存在DDR2中的数据传输到上位机PC。通过对各模块进行测试和系统的联调,测试结果表明系统能够正确的实现图像的实时、高速采集和传输。
[Abstract]:The high-speed image acquisition and transmission system is based on the powerful parallel data processing capability of FPGA and the high-speed and long-distance transmission characteristics of Gigabit Ethernet. It can collect and transmit remote image data in real time. Image acquisition and transmission system is of great significance for the development of moving target detection, navigation and guidance technology. The high speed image acquisition and transmission system is composed of two parts: the image acquisition circuit board and the CMOS image sensor OV5640. The image acquisition circuit board is grouped by the main controller EP4CE15F23C8NDDR2 memory MT47H64M16, the Ethernet interface control chip RTL8211EG and the expansion port. Firstly, the FPGA core circuit, DDR2 memory circuit, Ethernet interface circuit and extended port circuit are designed. Then, according to the peripheral electricity of each part, we design the schematic diagram of the image acquisition circuit board of the system. The connection characteristics of the road are designed for the whole PCB. Including the design of laminated structure, layout and wiring, Finally, the welding of the circuit board is completed. The software of the system is designed and written. This design is completed on the Quartus 鈪，

本文编号：1693347