本文将 4G 技术应用于钢轨打磨装备的通信系统中，提出了一个基于嵌入式 A8 微处 理器和 Liunx 操作系统的 4G 无线通信系统，这个系统不仅突破了对于钢轨打磨车的控制 距离限制，而且实现了地面与云端进行数据交互的功能。69397

本文对比分析国内外各种主流无线通信技术，突出了将 4G 技术引入通信系统的优势， 并提出了 4G 无线通信系统的总体方案。对于该通信系统的设计主要分为通信系统硬件设 计、通信系统软件设计和通信系统的测试实验共三个部分。系统的硬件设计主要包括了 硬件的选型和硬件接口电路的设计；系统的软件设计主要包括了建立 Linux 交叉开发环 境，4G 模块的接口驱动设计和系统的 netfilter 配置。最后通过测试实验验证了该通信系 统能够实现初步利用 4G 网络进行数据传输的基本功能。

毕业论文关键词 钢轨打磨控制 4G 通信 Linux 操作系统 4G 接口驱动

毕 业 设 计 说 明 书 外 文 摘 要

Title Digital rail fine grinding equipment—— The design of

  4G wireless communication system

Abstract

Applying 4G technology in communication systems of rail grinding equipment, this article presents a 4G wireless communications system which are based on an embedded A8 microprocessors and Linux operating system. The system is not only a breakthrough for distance limitations rail in grinding vehicle control but also an achievement in  interaction  between ground data with the cloud.

The analysis of international major wireless communication technology, the advantages of introducing 4G technology to a communication system and the overall scheme of 4G wireless communication system are shown in this paper. The design of the communication system is pided into three parts: hardware design of communication system, software design of communication systems and communication systems test experiment. The design of hardware interface circuit and the selection of hardware are the point of hardware design of the system. The software design including the establishment of Linux cross-development environment, the design of 4G module interface driver and configuration of the netfilter is also shown in this paper. Finally, the whole communication system is tested to prove it can achieve the initial use of 4G network for data transmission basic functions.

Keywords Rail  grinding  control  ,  4G  Communication , Linux  operating  System  , 4G Interface Driver

本科毕业设计说明书 第 I 页

目 次

1 绪论 1

1.1 研究背景及意义 1

1.2 无线数据传输技术的研究现状及发展趋势 1

1.2.1 蓝牙无线数据传输技术 1

1.2.2 ZigBee 无线数据传输技术 2

1.2.3 WiFi 无线数据传输技术 2

1.2.4 3G 移动通信技术