采用WIFI通信的目标定位与检视系统

发布时间：2018-03-23 12:27

本文选题：嵌入式系统　切入点：WIFI　出处：《吉林大学》2012年硕士论文

【摘要】：在当今数字信息技术和网络通信技术高速发展的后PC时代，嵌入式系统以其独特的优点广泛地渗透到消费电子、航空航天、网络通信、工业控制、医疗保健等各个领域。随着嵌入式主频越来越高，它的处理速度也越来越快，嵌入式系统与PC机的差距越来越小，并且还具有PC机所不能比拟的低功耗、便携性、低热量等特点，毋庸置疑，嵌入式系统已经成为当今计算机领域的一个亮点。鉴于嵌入式系统的众多优点，本文应用嵌入式开发技术、无线传输技术和定位技术，针对大型工程中机械操纵人员由于不知晓其他机械的位置和工作情况而造成配合不默契，工作效率低，不能顺利完成整个工程的问题，提出了一种应用于大型施工团队等需要互相传输图像信息和位置信息场合的嵌入式终端，通过了解在本终端上显示的其他终端的位置信息和图像信息，，可以有效地促进团队间的相互配合，提高工作效率，从而方便了人们的生活。本文将嵌入式处理器、无线网络、摄像头和GPS模块结合到一起，并以嵌入式Linux为开发平台，设计了采用WIFI通信的目标定位与检视系统。此系统的主要功能就是通过摄像头采集图像信息，通过GPS获取位置信息，然后以WIFI为媒介将图像信息和位置信息传送给其他的终端（本设计研发了6终端），从而实现了终端间位置信息和图像信息的交互。论文的主要内容包括系统的硬件设计和软件设计，其中硬件设计包括了系统电路图的设计和PCB板的制作，详细说明了各个硬件模块和网络的电路设计以及布局、布线问题；软件设计包括了系统开发环境的搭建、硬件模块在Linux环境下的驱动开发、内核移植、应用层程序的开发以及Qt图形界面的设计，并重点讲述了LCD驱动与触摸屏驱动的开发、V4L摄像头的应用、使用UDP协议进行网络广播数据的过程以及Qt地图浏览器的制作。本文除了对研究方法和过程进行详细讲解外，还对一些难点问题进行了深入地讨论和分析，最后对研究进行了总结并提出了改进意见。本设计成功地实现了终端间位置信息与图像信息的交互，经过了长时间的调试与实验，系统运行稳定，位置信息与图像信息传输速度优良，并且信息完整可靠，达到了预期效果。
[Abstract]:In the post-PC era with the rapid development of digital information technology and network communication technology, embedded system has been widely infiltrated into consumer electronics, aerospace, network communication and industrial control with its unique advantages. As the embedded main frequency becomes higher and higher, the processing speed of embedded system becomes faster and faster, the gap between embedded system and PC becomes smaller and smaller, and it also has the low power consumption and portability that PC can not compare. Low heat characteristics, no doubt, embedded systems have become a bright spot in the field of computer. In view of the many advantages of embedded system, this paper applies embedded development technology, wireless transmission technology and positioning technology to solve the problem that mechanical operators in large engineering do not know the location and working conditions of other machines. This paper presents an embedded terminal which needs to transmit image information and position information to each other in large construction teams because of its low working efficiency and being unable to finish the whole project successfully. By understanding the location information and image information of other terminals displayed on this terminal, we can effectively promote the mutual cooperation between teams, improve work efficiency, and thus facilitate people's lives. This paper combines embedded processor, wireless network, camera and GPS module, and takes embedded Linux as the development platform. A target location and view system using WIFI communication is designed. The main function of this system is to collect image information through camera and obtain position information through GPS. Then the image information and position information are transmitted to other terminals using WIFI as the medium. (6 terminals are developed in this design, thus realizing the interaction of position information and image information between terminals. The main content of this paper includes the hardware of the system. Part design and software design, The hardware design includes the design of the system circuit diagram and the making of the PCB board. The circuit design, layout and wiring of each hardware module and network are described in detail, and the software design includes the construction of the system development environment. The driver development of hardware module in Linux environment, kernel transplantation, application layer program development and QT graphic interface design are discussed. The application of LCD driver and touch screen driver to develop V4L camera is emphasized. The process of using UDP protocol to broadcast network data and the making of QT map browser. In addition to the detailed explanation of the research method and process, some difficult problems are discussed and analyzed in this paper. Finally, the research is summarized and some suggestions are put forward. This design successfully realizes the interaction of position information and image information between terminals. After a long period of debugging and experiment, the system runs stably. The transmission speed of position information and image information is excellent, and the information is complete and reliable.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.1

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