文档介绍：摘要
本课题主要研究基于GPRS无线网络的数据监控采集终端的实现原理和实现方法,其目标是将基于ARM7内核的嵌入式系统和GPRS网络结合起来,利用GPRS 网络实现无线数据传输。该系统可以同时实现多路数据的采集,以便对现场环境进行分布式、网络化的采集与监控,可应用于大气与水质环境监测、道路交通监测领域等。
该系统由基于32位ARM7内核的LPC2131 MCU、GPRS模块接口、串行通信接口、LCD接口以及A/D模块组成,可以将外部的模拟或数字信号通过GPRS网络发送到中心服务器,同时可以在LCD上显示。
本文首先介绍了嵌入式系统的相关知识,重点说明了本课题中所采用的LPC2131 MCU的性能特点。在详细分析了系统功能需求的基础上,提出了系统的总体设计原则及设计方案。文章重点阐述了基于32位ARM内核的MCU硬件系统设计方法,详细介绍了各功能模块的硬件电路和PCB(印刷电路板)的设计过程和调试方法,并对基于μC/OS-II实时操作系统(RTOS)的软件系统设计方法也作了必要的介绍。最后,总结了本文的主要研究工作,并结合当今信息产业的先进技术对该平台做了展望。
关键词: 嵌入式系统; ARM; GPRS ;mC/OS-II
ABSTRACT
The thesis mainly discusses the implementation principle and method of data acquisition and supervision terminal based on GPRS work. It aims to utilize the embedded system, which is based on ARM7 core, and work to realize wireless data transmission. The system may collect multi-channel data so that it can acquire and monitor the environment parameters distributedly. Then the system can be applied to atmosphere and water quality monitoring and traffic supervising etc.
The system posed of the LPC2131 MCU using 32-bit ARM7 core, GPRS module interface, COM port, LCD and A/D module. The external analog signals or digital signals will be sent to center server by work, and also be displayed on the LCD.
The paper first summarizes the relevant knowledge of the embedded system, with the mainly introduction of the function of LPC2131 MCU used in this design. After analyzing the functional requirement of this system in detail, the total principle and the plans of the system have been brought forward. Then the paper presents the hardware design plans of the MCU, and analyzes the design of the circuit and PCB in every functional module detailedly. The software design based on mC/OS- II real-time operating system(RTOS) is also be introduced. Finally, the paper summarizes the main research work, and makes a prospect of the developing platform with the advanced technology of information industry.
Key Words: Embedded System; ARM;GPRS;mC/OS-II
目录
第1章绪