基于以太网接口的高速记录系统的研究-精密仪器及机械专业论文.docx

中北大学学位论文基于以太网接口的高速记录系统的研究 摘要高速数据采集是采集和评估雷达回波信号的必要手段。本文设计了利用CPCI总线 并且同时具有以太网数据传输接口的高速数据采集系统，将高速数据采集和以太网数据 传输结合在一起。本文的研究工作首先以高速数据采集系统为基础；针对高速数据采集系统的性能， 通过高速电路设计的理论知识，并在理论分析的基础上，设计并研制了一套100MSPS、 12bit的高速数据采集系统，探讨了高速数据采集系统的设计和实现中的若干技术问题。 最后，通过测试表明该数据采集系统采样率可达100MSPS，有效位数达到12位。以太网络通信经过多年的发展，目前较为常用的以太网通信的传输速率为10Mb／s、 100Mb／s、1000Mb／s甚至更高。传输媒介也从最早的同轴电缆，．双绞线发展到现在的光 纤。以太网在计算机通信的应用中，其协议内容相对复杂，在硬件中实现比较繁琐。本 文实现了一种利用成熟的以太网协议的物理层芯片，采用自拟协议的传输方案，并完成 了样机的研制，实验证明了该方案具有实现简单，可靠性高的特点。关键词：高速模拟信号采集卡；FPGA；以太网传输；单片机；以太网物理层芯片中北大学学位论文Research on hi曲-speed date acquisition system based on Ethernet interfaceAbstractHi曲一speed data acquisition is important and necessary for acquisition and assessment of radar echo signal．This higll-speed data acquisition system designed is based on CPCI bus andhave an ethernet interface．It combines high-speed date acquisition and the networkingtechnologies．Research of the dissertation is based on the hi曲一speed data acquisition system at first． About the data acquisition system’S performance，combining、)l，im theoretical analysis，I design and develop a suit of 100MSPS，1 2·bit high-speed data acquisition system，and some techniques on design and implementation of high speed data acquisition system is discussed．The test result indicates that the sampling frequency of the data acquisition．．Among the networking technologies，Ethemet is mature谢tll transmission speed up to 10Mb／s、lOOMb／s、1000Mb／s in fiber optic communication．Transmission medium have gone the first coaxial cable，twisted pair to the current development of optical fiber．This thesis represents an innovative and reliable remote data transmission solution by overcoming this problem、析tll a well-developed Ethemet physic layer chip．A sample system has already been made and tested．The result shows that this innovative solution is reliable and applicable．Keywords：High-speed analog signal acquisition card，FPGA,Networking communicationtechnologies，Single Chip Microcontroller,Ethernet PHY原创性声明本人郑重声明：所呈交的学位论文，是本人在指导教师的指导下