Blind navigation system based on RFID handset design and implementation ABSTRACT
Travel has been plagued by blind blind life, how to safely and accurately to help blind people reach their destinations safely and accurately? The system aims to provide a hand held RFID-based navigation system for the blind, blind to resolve the existing navigation systems can not accurately and safe for the blind navigation problems. Things platform using the RFID technology, the road is stored in the electronic tags, converted to the corresponding voice message in order to achieve for the blind to provide accurate and safe navigation, to solve the blind travel problems.
This article discusses the PXA270 as the main control module to RFID as a core technology platform of things as hand-held navigation system for the blind. The system is inconvenient for the blind developed for a trip to help the blind to its own comprehensive system for easy access to the destination. The system combines RFID navigation, blind input, intelligent traffic identification, external data acquisition, voice prompts, phone, wireless transmission, global positioning and other functions. 原文请+QQ3249,114优.文^论,文'网
This article discusses the blind navigation system based on RFID handset design and implementation, and its main host platforms, including the blind in the design of the keyboard, voice prompts, phone functions to achieve. The system contains multiple processors, in parallel under the control of main control module and efficient work. Software system based on Linux operating system, using multi-threaded programming model to ensure that the system of real-time and reliability
Key words：Internet of Things RFID Blind Navigation PXA270
目 录毕业论文http://www.youerw.com/
摘 要 I
ABSTRACT II
目 录 III
1 引言 1
1.1项目来源 1
1.2开发意义 1
1.3需求分析 1
1.4国内外的研究现状 2
1.5可行性分析 2
1.5.1 硬件平台技术支持的可行性分析 2
1.5.2 软件开发技术的可行性分析 3
2 功能描述及系统设计 5
2.1功能描述 5
2.1.1按键功能说明： 6
2.2系统设计 7
3 开发环境以及硬件选型 9
3.1 Linux的简介 9
3.1.1 Linux的定义 9
3.1.2 对于普通用户来说Linux的优点 9
3.1.3 对开发人员来说Linux的优势 10
3.2 PXA270简介 11
3.2.1 UP-TECHPXA270-S 11
3.2.2 PXA270-S 开发平台硬件资源 12
3.2.3 PXA270-S 开发平台硬件架构，框图如下： 14
3.3 GSM模块简介 15
3.3.1TC35I/MC35I西门子短信模块开发板M3主要技术指标： 15
3.3.2 AT指令简介 16
3.3.3 AT常用指令介绍 16
3.4 键盘模块简介 18
3.5 GPS模块简介 19
4 详细设计 21
4.1 硬件设计 21
4.2 系统软件设计 22
4.2.1 Linux内核裁剪 22
4.2.2linux驱动模块的编译与裁剪 24
4.2.3内核的编译与移植 24
4.2.4 编译内核与烧录内核 27
4.2.5Linux下串行端口的程序设计 27
4.2.6Linux下的多线程应用程序设计 31
4.2.7 GSM模块的设计与实现 32
4.2.8 GPS模块的设计与实现 33
4.2.8盲人键盘的设计与实现 35
4.2.9详细设计小结 37
5 系统测试 38
5.1测试目标 38
5.2 模块测试（包扩软硬件模块） 38
5.2.1GSM测试 38
5.2.2 GPS测试 39
5.2.3mplayer解码器测试 40
5.3 系统集成测试指标 40
5.4 系统集成测试结果 40
6 结论 43
参考文献 44
附 录 45谢 辞 56 ,2120
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