面向物联网应用的嵌入式终端设备的开发与研究

发布时间：2019-03-31 20:07

【摘要】：物联网终端设备是物联网感知的核心组成,对物联网发展至关重要。当前的物联网终端大多针对某一特定领域的应用而开发,通用性及兼容性较差,制约着物联网终端设备的使用与推广。基于此,本文旨在研制具有柔性接口及一定通用性的物联网嵌入式终端设备,并对其相关关键技术进行研究。主要体现在以下几个方面： (1)为满足多种传感器接入的需求,研究了支持多传感器接入的物联网嵌入式终端的柔性配置方法,设计了相应的硬件接口、通讯协议、中间件及应用层配置工具,开发了物联网嵌入式终端设备,实现了终端交互、配置等功能； (2)基于ZigBee协议,利用Z-Stack的任务调度和消息传递机制,研究了物联网节点的组网方法,并基于嵌入式系统架构,实现了物联网终端设备的组网及无线传输的功能； (3)详细分析了嵌入式物联网终端设备的功耗、参数及性能,研究了嵌入式终端设备的电源、工作模式管理机制,并结合Z-Stack的低功耗策略,优化了嵌入式设备的能效管理功能； (4)针对物联网的安全需求,研究基于物理隔离的物联网隔离机制,设计了相应的运行机制和通讯协议,开发了具有物理隔离功能的物联网网关设备。以冷链物流为背景,测试和验证了系统的功能,实现了自组网、柔性传感器接入、低功耗、网络安全隔离的特性,整个系统可扩展性强,具有一定实用性。
[Abstract]:Internet of things terminal equipment is the core component of Internet of things perception, and it is very important to the development of Internet of things. Most of the current Internet of things terminals are developed for the application of a particular field. The poor universality and compatibility restrict the use and promotion of the Internet of things terminal equipment. Based on this, the purpose of this paper is to develop a flexible interface and a certain universality of the Internet of things embedded terminal equipment, and to study its key technologies. The main contents are as follows: (1) in order to meet the requirements of multi-sensor access, the flexible configuration method of Internet of things embedded terminal supporting multi-sensor access is studied, and the corresponding hardware interface and communication protocol are designed. Middleware and application layer configuration tools, developed the Internet of things embedded terminal equipment, to achieve terminal interaction, configuration and other functions; (2) based on ZigBee protocol, using the task scheduling and message passing mechanism of Z-Stack, this paper studies the networking method of Internet of things node, and realizes the networking and wireless transmission function of Internet of things terminal equipment based on embedded system architecture; (3) the power consumption, parameters and performance of embedded Internet of things terminal device are analyzed in detail, and the power supply and working mode management mechanism of embedded terminal device are studied, and the low power consumption strategy of Z-Stack is combined. The energy efficiency management function of embedded devices is optimized. (4) according to the security requirement of Internet of things, this paper studies the isolation mechanism of Internet of things based on physical isolation, designs the corresponding operation mechanism and communication protocol, and develops the gateway equipment of Internet of things with physical isolation function. Under the background of cold chain logistics, the function of the system is tested and verified, and the features of ad hoc network, flexible sensor access, low power consumption and network security isolation are realized. The whole system has strong expansibility and is practical.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP391.44;TN929.5

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