基于嵌入式Linux的物联网网关设计与应用

发布时间：2018-07-07 09:58

本文选题：物联网 + 嵌入式系统　；参考：《重庆理工大学》2014年硕士论文

【摘要】：物联网概念的提出与应用的兴起，为信息产业带来了新一轮的发展热潮。物联网通过智能地感知识别与控制，使人与人、人与物、物与物之间相互关联起来以实现信息的共享。随着物联网的普及，传感器设备的种类和数量将不断增长，行业应用也不断趋于多元化。因此需要使用网关设备，使大量的传感器设备有效地接入互联网，并且能够提供通用便捷的访问方式。随着嵌入式系统的硬件设备和应用软件的进步，嵌入式设备已深入应用到工业、农业、交通、安防以及日常生活等各个领域，并且嵌入式设备以其低成本、低功耗、性能良好的优势，也将在物联网的发展与普及过程中将起到重要的作用。本文首先对物联网的体系结构以及物联网网关的地位与功能进行了分析，并介绍了嵌入式开发的相关内容。基于对物联网与嵌入式开发技术的研究，提出了一种物联网网关设计方案，可以实现不同类型的传感器设备的接入，同时提供了便捷的方式与互联网进行数据交换。根据该网关系统的应用和实际需求，选择了以基于ARM架构的嵌入式处理器作为其核心的硬件开发设备，并移植了嵌入式Linux操作系统。基于该平台，通过串口外扩的通讯模块使网关与传感器设备相互通信，实现了ZigBee无线传输节点的接入并分析了详细过程。在物联网网络层接入方面，研究了嵌入式web服务器与GSM移动通信相关技术，详细分析了BOA服务器的工作原理，，并进行了移植与测试。此外，对嵌入式应用程序的设计方法也做了研究，包括进程、线程之间的同步互斥机制与进程间通信原理，并在此基础上设计了一部分网关应用程序模块。根据物联网行业发展的现状，本文对物联网网关在仓库环境检测系统的应用进行了研究，完成了数据库线程模块、网页表单、CGI程序与发送短信线程的设计，基本实现了环境检测、短信报警的功能。
[Abstract]:The concept and application of the Internet of things (IOT) has brought a new upsurge for the information industry. The Internet of things (IOT) can realize the sharing of information by intelligently perceiving and controlling, making people, things, things and things related to each other. With the popularity of the Internet of things, the variety and number of sensor devices will continue to grow, and industry applications will continue to diversify. Therefore, it is necessary to use gateway devices to make a large number of sensor devices effectively access the Internet, and to provide universal and convenient access. With the development of embedded system hardware and application software, embedded devices have been applied to many fields, such as industry, agriculture, transportation, security and daily life, and embedded devices have low cost and low power consumption. The advantage of good performance will also play an important role in the development and popularization of the Internet of things. This paper first analyzes the architecture of the Internet of things and the status and function of the Internet of things gateway, and introduces the related contents of embedded development. Based on the research of the Internet of things and embedded development technology, a design scheme of the Internet of things gateway is proposed, which can realize the access of different sensor devices and provide a convenient way to exchange data with the Internet. According to the application and practical requirements of the gateway system, the embedded processor based on arm architecture is selected as its core hardware development equipment, and the embedded Linux operating system is transplanted. Based on this platform, the gateway communicates with the sensor equipment through the communication module of serial port extension. The ZigBee wireless transmission node is accessed and the detailed process is analyzed. In the aspect of Internet of things (IoT) network layer access, the related technologies of embedded web server and GSM mobile communication are studied, the working principle of BOA server is analyzed in detail, and the transplantation and test are carried out. In addition, the design method of embedded application program is also studied, including process, synchronous mutex mechanism between threads and the principle of inter-process communication. On this basis, a part of gateway application module is designed. According to the development of the Internet of things industry, this paper studies the application of the Internet of things gateway in the warehouse environment detection system, completes the database thread module, the web page form CGI program and the sending short message thread design. The basic realization of environmental detection, SMS alarm function.
【学位授予单位】：重庆理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP391.44;TN929.5

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