物联网中异构通信系统设计
发布时间：2018-11-15 10:55
【摘要】：农业物联网中现有的基于主从节点的无线传感网络中,主节点通常采用GPRS建立TCP连接,并传输数据,虽然方便但费用较高,而且一旦GPRS无法连接(SIM卡欠费、GPRS信号太弱等等原因)那么主节点无法将数据传输到服务器,造成数据丢失或者实时性丢失。此外,服务器和主节点、主节点和从节点之间的通信都是单方面的：从节点负责采集数据并将采集到的数据发送给主节点,但不管主节点是否接收到数据；同样的主节点也只是将数据通过GPRS发出去,却不管服务器是否有接收到。针对无线传感网络中单一数据通路以及单向通信问题,研究并设计了异构通信平台以及异构通信系统。异构通信平台是基于STM32设计的。异构通信平台上搭载了WIFI、GPRS以及ETHERNET三种通信方式。异构通信系统采用“一问一答”的双向通信模型,并且可以自适应选择通信方式,实现了功率、速率等资源的自管理、自调节、自配置。本论文分为五大部分。首先,论文叙述了物联网的发展并讲述了异构通信平台设计的必要性；其次介绍了与本文有关的TCP/IP协议族以及其他硬件接口和操作系统,第三详细阐述了异构通信系统的功能以及其整体框架；第四,讲述了异构通信系统的硬件设计；第五,给出了异构通信系统的软件设计,包括通信协议、下位机、配置软件以及服务器软件的设计；通过最后的测试结果,本论文设计的异构通信系统达到了设计要求。
[Abstract]:In the existing wireless sensor networks based on master and slave nodes in the agricultural Internet of things, the master node usually uses GPRS to establish the TCP connection and transmit data, which is convenient but expensive, and once the GPRS is unable to connect (SIM card arrears), GPRS signal is too weak and so on) then the master node can not transmit data to the server, resulting in data loss or real-time loss. In addition, the communication between the server and the primary node, the master node and the slave node is unilateral: the slave node is responsible for collecting data and sending the collected data to the master node, regardless of whether the master node receives the data or not; The same master simply sends data through the GPRS regardless of whether the server receives it or not. Aiming at the problem of single data path and unidirectional communication in wireless sensor network, the heterogeneous communication platform and heterogeneous communication system are studied and designed. Heterogeneous communication platform is based on STM32 design. On the heterogeneous communication platform, there are three communication modes, WIFI,GPRS and ETHERNET. The heterogeneous communication system adopts a two-way communication model of "one question and one answer", and it can adaptively choose the communication mode, which realizes the self-management, self-adjustment and self-configuration of power, rate and other resources. This paper is divided into five parts. Firstly, the paper describes the development of Internet of things and the necessity of designing heterogeneous communication platform. Secondly, it introduces the TCP/IP protocol family and other hardware interfaces and operating systems related to this paper. The third part elaborates the function of the heterogeneous communication system and its whole frame, fourth, describes the hardware design of the heterogeneous communication system. Fifthly, the software design of heterogeneous communication system is given, including the design of communication protocol, lower computer, configuration software and server software, and through the final test results, the heterogeneous communication system designed in this paper meets the design requirements.
【学位授予单位】：复旦大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP391.44;TN929.5
本文编号：2333106
[Abstract]:In the existing wireless sensor networks based on master and slave nodes in the agricultural Internet of things, the master node usually uses GPRS to establish the TCP connection and transmit data, which is convenient but expensive, and once the GPRS is unable to connect (SIM card arrears), GPRS signal is too weak and so on) then the master node can not transmit data to the server, resulting in data loss or real-time loss. In addition, the communication between the server and the primary node, the master node and the slave node is unilateral: the slave node is responsible for collecting data and sending the collected data to the master node, regardless of whether the master node receives the data or not; The same master simply sends data through the GPRS regardless of whether the server receives it or not. Aiming at the problem of single data path and unidirectional communication in wireless sensor network, the heterogeneous communication platform and heterogeneous communication system are studied and designed. Heterogeneous communication platform is based on STM32 design. On the heterogeneous communication platform, there are three communication modes, WIFI,GPRS and ETHERNET. The heterogeneous communication system adopts a two-way communication model of "one question and one answer", and it can adaptively choose the communication mode, which realizes the self-management, self-adjustment and self-configuration of power, rate and other resources. This paper is divided into five parts. Firstly, the paper describes the development of Internet of things and the necessity of designing heterogeneous communication platform. Secondly, it introduces the TCP/IP protocol family and other hardware interfaces and operating systems related to this paper. The third part elaborates the function of the heterogeneous communication system and its whole frame, fourth, describes the hardware design of the heterogeneous communication system. Fifthly, the software design of heterogeneous communication system is given, including the design of communication protocol, lower computer, configuration software and server software, and through the final test results, the heterogeneous communication system designed in this paper meets the design requirements.
【学位授予单位】：复旦大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP391.44;TN929.5
【参考文献】
相关期刊论文 前3条
1 文黎明;龙亚兰;;物联网在农业上的应用[J];现代农业科技;2010年15期
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3 史翔;王向勇;姜文超;张海娟;;物联网及其关键技术研究[J];中国新通信;2010年17期
，本文编号：2333106
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