【作者】 向细波；

【导师】 林建一；

【作者基本信息】 同济大学 ， 检测技术与自动化装置， 2007， 硕士

【摘要】 无线远程监控系统是在传统测控系统的基础上结合当前无线通信技术和信息处理技术而发展起来的新型远程监控系统。它为人们远程监控现场提供了极大的方便。GPRS业务的出现为无线监控系统提供了一种全新的无线数据传输方式。它改变过去采用的无线传输方式传输距离近、数据传送量小或者实时性差的缺点，可以提供跨地域、高速、大容量、高实时性的数据传输业务。通用无线分组业务GPRS是General Packet Radio Service的英文缩写，是在目前现有的GSM数字移动通信系统上发展起来的一项新型的数据承载业务。它将移动通信技术和IP技术有机结合，组成了移动IP网络，可与高速发展的固定IP网实现无缝连接，为移动用户以分组交换的形式提供数据、语音、图像等多媒体业务。随着计算机技术逐步渗入到各类电子产品中，嵌入式系统成为继计算机网络技术之后，IT领域又一个新的技术热点和发展方向。但同时大量的嵌入式应用也对嵌入式设备的性能提出了更高的要求。ARM公司的32位RISC处理器，以其高速度、低功耗、低成本、功能强等诸多优异性能，应用越来越广泛。μCLinux操作系统是从Linux衍生出来的一种操作系统，它是专为无MMU的微控制器开发的嵌入式Linux操作系统。它支持众多嵌入式处理器类型，具有完善的各类驱动支持。本文首先论述了远程监控系统的发展现状以及研究意义，接着叙述了基于GPRS无线监控系统的背景知识，包括GPRS技术的特点和工作原理等，以及就此系统中所采用的基础技术如TCP／IP、PPP的有关知识作了比较详细的介绍。随后完成嵌入式Linux系统的构建，包括嵌入式系统硬件平台、开发环境的建立以及嵌入式Linux设计与实现。然后进入本文的重点基于GPRS技术的监控系统的设计与实现。详细描述了远程监控系统通用的设计方案，主要有GPRS网络连接过程、远程监控终端系统的组成和功能实现以及各个层次所采用的通信协议。在上面讨论的基础上，把嵌入式Linux技术与GPRS技术实际应用在城市路灯远程监控系统的项目中。最后进一步根据GPRS通信平台的特征和城市路灯远程监控系统的要求，分析了城市路灯系统中监控中心的几种GPRS接入方案，并给出了监控中心软件系统总体架构的具体实现。最后，给出了本论文的工作总结以及关于对进一步的工作方向进行了简要的讨论。更多还原

【Abstract】 The development of Radio monitoring and controlling system is based on wireless data transmission technology. It makes it easy for people to monitor and control remote systems. GPRS provides a new data transmission mode for wireless monitoring and controlling systems. Compared to traditional data transmission modes, the GPRS based data transmission mode is long-distance, high speed, good real-time and large capacity.As a new kind of data transmission technology, GPRS (General Packet Radio Service) is developed from the current GSM digital mobile communication system. With the combination of radio technology and IP technology, GPRS constructs a mobile IP networks. It can implement no-gap link with highly developed fix IP networks, using packet switch technology to transmit all kind of data such as data, audio and picture.With computer technology applying to the electronic products gradually, the embedded system becomes a new technical focus and development trend in IT field following computer network technology. Meanwhile, the wide embedded applications call for better performance and functionality of embedded system. The 32-bit embedded RISC microprocessors provided by ARM having high performance together with low power consumption and system cost, is used more and more widely.μClinux is derived from Linux and inherits lots of virtues of Linux such as open source, it has special implements in the case of no MMU and supports wide range processors and many drivers.At first, it is discussed that present situation, future development and study significance of remote monitoring system. After the introduction of GPRS, TCP/IP and PPP, the design scheme of remote monitoring system based on GPRS is given, including system structure and function, remote terminal unit structure, communication protocols and GPRS link process. Then, given its application in wireless remote monitoring system for street lamps management, the system detailed implementation is described, including the hardware and software design in remote terminal unit. The command packets transmitted between monitoring center and remote terminal unit, the remote terminal unit data-gathering process and the data transmitting flow through the whole system are also described in detail. Lastly, according to the communication feature of GPRS and the demand of remote monitoring system for street lamps, the scheme for GPRS access to Internet was discussed in monitoring center, and the thesis put forward the realization of monitoring center software system as a whole.In the finality, the work summaries of whole thesis are given and the problems requiring further studies are discussed in brief.更多还原