基于多核cortex-a9的车载无线路由器硬件设计与实现.docx

研究生优秀毕业论文
大连理工大学专业学位硕士学位论文
摘 要
随着大数据时代的来临,城市轨道交通系统无线网络的覆盖变得越来越重要。最新的乘客信息系统不仅能提供常规的多媒体音视频服务,同时也要提供无线网络服务。近几年,随着通信技术和网络技术的进步,列车无线技术也得到了很大发展。
为了满足大数据时代人们对列车无线网络覆盖的需求,本文设计了一种基于ARM ,不仅能在客室内建立WiFi网络,而且能连接外部3G和LTE等网络,并且具有实时***功能。同时,可提供一路1080p高清视频输出。
本文首先结合现阶段人们对车载无线路由器的需求,,并对关键器件进行选型。随后,论文详细说明了方案最小系统、无线射频模块、以太网模块、高清显示模块和电源模块等主要功能模块的电路设计。之后从电路板的叠层选取、布局、布线、加工前的检查和准备工作等方面给出了PCB的设计与实现。接下来,对车载无线路由器进行了硬件测试和功能测试,并给出测试结果及分析。最后,总结了本文工作,并展望了未来的发展方向。
关键词:无线路由器;轨道交通;ARM Cortex-A9;硬件设计;无线网络
万方数据
基于多核Cortex-A9的车载无线路由器硬件设计与实现
Hardware Design and Implementation of Multi—core Cortex
.A9 Based Wireless Router on the nain
Abstract
As the time of big data ing,work coverage ofurban rail transit system is ing more and more latest PIS system should not only serves people with audio and video information,but also work as recent years,with the
development munication technology work technology,train wireless technology also got great development.
In order to meet people’S needs for train work coverage in big data era,this thesis designs a ARM Cortex-A9 multi·core processor based Wireless Router on the can not only set up a work in the partment,but also can connect the 3G and it has the function of real time ,it call also
provide a l 080p high definition video output.
This thesis proposes a design scheme based on Freescale’S processor according to people’S demand for on-board wireless router at the present stage,and then selects the model of thesis illustrates the design of the main function modules in detail, including the smallest system,wireless RF module,Ethemet module,hi【gh definition display module and power module in the third the forth chapter this thesis provides the design and implementation of PCB,including the selection of circuit board stack,layout,
routing,checking and preparing work before processing, thesis introduces the te