COMFIT: A development environment for the Internet of Things

This paper presents COMFIT (Cloud and Model based IDE for the Internet of Things), a development environment for the Internet of Things that was built grounded on the paradigms of model driven development and cloud computing. COMFIT is composed of two different modules: (1) the App Development Module, a model-driven architecture (MDA) infrastructure, and (2) the App Management and Execution Module, a module that contains cloud-based web interface connected to a server hosted in the cloud with compilers and simulators for developing Internet of Things (IoT) applications. The App Development Module allows the developers to design IoT applications using high abstraction artifacts (models), which are tailored to either the application perspective or the network perspective, thus creating a separation between these two concerns. As models can be automatically transformed into code through the App Development Module, COMFIT creates an environment where there is no need of additional configurations to properly compile or simulate the generated code, integrating the development lifecycle of IoT applications into a single environment partially hosted in the client side and partially in the cloud. In its current version, COMFIT supports two operating systems, namely Contiki and TinyOS, which are widely used in IoT devices. COMFIT supports automatic code generation, execution of simulations, and code compilation of applications for these platforms with low development effort. Finally, COMFIT is able to interact with IoT-lab, an open testbed for IoT applications, which allows the developers to test their applications with different configurations without the need of using local IoT devices. Several evaluations were performed to assess COMFIT’s key features in terms of development effort, quality of generated code, and scalability.     

物联网模式在智慧农业中的应用探究

本文从物联网模式和智慧农业的概念和特点出发,分析物联网模式在智慧农业的具体实践和应用,并找出当 前物联网模式在智慧农业应用中的问题,提出具体的应对策略,以提高智慧农业中物联网模式的普及和应用,推动现代智慧农 业生产一体化和加工智能化,推动我国现代农业的战略化发展。     

物联网时代的嵌入式系统机遇

嵌入式系统是物联网平台的半边天.物联网、云计算给嵌入式系统带来新的机遇.单片、嵌入、物联是嵌入式系统的三个基本特性,体现了嵌入式系统的三个时代特征.物联网是多学科的大科技概念,要有多学科视野,嵌入式系统应该用自己的语言来诠释物联网.目前,物联网平台的许多嵌入式技术已经成熟,建设物联网的大型国家工程迫在眉睫.     

浅析物联网在通信行业中的应用

“物联网”作为标志着新技术和经济革命的一种新兴产业而受到各国政府、学术界和工业界的广泛重视。本文介绍了物联网的相关概念、特征,描述了物联网技术架构,并简单分析了物联网在通信行业应用的发展阶段和发展现状。     

从互联网角度分析物联网

从互联网角度对物联网进行了深入浅出的分析。物联网是在计算机互联网的基础上,利用RFID、无线数据通信等技术,构造一个覆盖世界上万事万物的"Internet of things"。在这个网络中,物品(商品)能够彼此进行"交流",而无需人的过多干预。其实质就是综合利用各种技术,通过互联网实现物品(商品)的自动识别和信息的互联与共享的目的。不论是物联网的概念内涵,还是使用的相关的技术,物联网都没有脱离互联网,二者的基础是一致的。     

物联网认证协议综述

物联网设备数量的大规模增长以及人工智能技术的逐步升级给物联网安全带来了严峻的挑战.由于大部分物联网设备具有无键盘输入、CPU结构简单、存储容量小、计算和通信能力弱等特点,以及物联网网络的体系结构和计算机网络的不同,传统的认证协议无法在物联网环境中通用.因此,设计适用于物联网环境的认证协议是保证物联网安全必不可少的环节.本文介绍了物联网认证协议研究的背景以及近几年物联网认证协议的研究进展,分析了物联网认证协议与传统计算机网络认证协议的不同,指出了物联网认证协议中常用的技术和数学方法,包括椭圆曲线加密、秘密共享、量子密码学等,然后从用户与设备认证、设备与服务器认证、设备与设备认证三个方面来介绍物联网认证协议研究的最新研究成果,最后讨论了物联网认证协议未来研究方向.     

物联网与嵌入式技术

本文从物联网及其体系结构谈起,介绍了嵌入技术及嵌入式处理器,并对嵌入式技术在物联网中的作用及发展前景做了阐述。     

Combining heterogeneous service technologies for building an Internet of Things middleware

Radio-frequency identification (RFID) is a technology that allows ordinary objects to be uniquely identified by “smart tags” which are also capable of storing small quantities of data. The term Internet of Things was originated from a vision strongly coupled with supply-chain concerns and RFID tagged objects. However the idea of such Internet of Things has evolved in a wider sense, referring now to a ubiquitous object society combining RFID, sensor networks and pervasive computing technologies. This scenario involves different requirements such as heterogeneity and dynamicity of objects, sensors, applications and protocols as well as the need for allowing the dynamic evolution of such applications. These issues seemed to be easily addressed if the principles of service-oriented computing (SOC), like loose coupling and heterogeneity, are used for constructing such architectures and applications. In this paper we underline what benefits SOC can offer to constructing a middleware for the Internet of Things. These concepts have been applied in a service-oriented middleware that tries to leverage the existing Internet of Things architectural concepts by using SOC principles in order to bring more flexibility and dynamicity. We describe the approaches used in that middleware and the lessons learned from that experience. This middleware was initially tested on an application for tracking and monitoring supply-chain objects, and later extended to target wider application domains that are also described in this paper. The project described here has become part of the OW2 AspireRFID open-source project.     

开源自动化控制软件Sedona在物联网中的应用

通过讨论物联网的现状、关键技术及发展方向,主要介绍了一种开源自动化控制软件Sedona在物联网的应用技术,包括在物联网架构中如何进行软件开发和应用程序设计,并介绍了该架构的技术特点。Sedona语言是一种通用的面向组件化的编程语言。Sedona虚拟机是一个小型解析器,具有良好的移植性,内嵌多种通信协议,可以运行在任何基于IP通信的网络上。最终实现各设备之间集中控制、分散管理的目标。     

物联网的应用和前景展望

物联网被视为互联网的应用扩展,应用创新是物联网的发展的核心,以用户体验为核心的创新是物联网发展的灵巍。沥诞网作为未来发展的趋势,将给世界和社会带来巨大变革,并改变人们的生活方式。     

物联网的机遇与挑战

作为未来的发展趋势之一,物联网将在各个方面决定未来世界和人类社会的发展方向。由于物联网的发展还处于起步阶段,人们对这一领域的了解往往不够全面,甚至存在一些误区。因此,通过介绍物联网的发展史和相关基本概念,希望使读者能够对这一全新领域有一个全面准确的认识。同时对当前物联网发展中存在的困难进行了比较系统的分析,指出了今后的发展方向。     

物联网的研究现状及其产业化

物联网(IOT)作为近年来发展最为迅猛的技术受到各方面的关注.本文首先从物联网的概念出发,全面介绍物联网的历史及概念;然后就其各种标准及标准化的进程进行介绍和分析,并对其发展现状做概括性的描述;最后对其产业化的发展道路进行分析和展望.     

A secure and quality-aware prototypical architecture for the Internet of Things

The increasing diffusion of services enabled by Internet of Things (IoT) technologies raises several risks associated to security and data quality. Together with the high number of heterogeneous interconnected devices, this creates scalability issues, thereby calling for a flexible middleware platform able to deal with both security threats and data quality issues in a dynamic IoT environment. In this paper a lightweight and cross-domain prototype of a distributed architecture for IoT is presented, providing minimum data caching functionality and in-memory data processing. A number of supporting algorithms for the assessment of data quality and security are presented and discussed. In the presented system, users can request services on the basis of a publish/subscribe mechanism, data from IoT devices being filtered according to users requirements in terms of security and quality. The prototype is validated in an experimental setting characterized by the usage of real-time open data feeds presenting different levels of reliability, quality and security.     

基于物联网技术的污水实时采样系统

现代经济的快速发展和环境污染的日趋严重,使得工业污水对环境的影响问题日益突出,为此,本文开发了一种基于物联网技术的污水实时采样系统。该系统由控制模块、温度检测、步进电机控制、分瓶器、蠕动泵、存储器、GPR S DTU、储样瓶、进水管等部分组成。本系统可通过控制步进电机进行污水采样并存储到不同的存储缸内,也可以通过设置时间间隔实现时间和比例采样等多种方式进行采样。具有远程控制通讯、采样模式多样化、样品恒温保存、断电保护、管路自动清洗、废液回流等功能,也便于企业投入生产和推广。     

从互联网到物联网

结合对互联网发展历程的回顾,本文阐述物联网与互联网的联系,分析物联网的主要特点、技术和应用领域。     

物联网时代传感器低成本化发展的思考

在对物联网产业的内涵、体系结构进行系统阐述和分析基础上,阐述了传感器与物联网的关系以及传感器在物联网中的战略意义,分析了传感器技术的低成本化发展方向,并提出了一些低成本化措施。     

从嵌入式系统视角看物联网

物联网是微处理器基础上,通用计算机与嵌入式系统发展到高级阶段相融合的产物。物联网有3个源头,即智慧源头、网络源头、物联源头。物联网的物联源头是嵌入式应用系统的4个通道接口。物联网中有众多的物联系统,物联网事件是物联系统中的行为过程。从众多的物联网事件中,可以归纳出物联网的6个行为元素,即物储、物感、物控、物信、物管、物互。物联网与云计算的关系是基础与上层建筑的关系：物联网是智慧地球,云计算是智慧服务。     

工业物联网研究概述

中国作为世界上最大的制造业基地,每年的工业生产总值约占GDP总额的一半。现代先进制造业的发展使得传统的生产模式不再适合,而物联网的提出给先进制造业提供了可靠的技术支持,可保证在复杂环境中的工业生产的顺利进行。文章主要从工业物联网的关键技术以及主要应用方面对其做了详细的论述,同时给出了影响未来工业物联网发展的若干因素。     

A survey on fog computing for the Internet of Things

Fog computing has emerged to support the requirements of IoT applications that could not be met by today’s solutions. Different initiatives have been presented to drive the development of fog, and much work has been done to improve certain aspects. However, an in-depth analysis of the different solutions, detailing how they can be integrated and applied to meet specific requirements, is still required. In this work, we present a unified architectural model and a new taxonomy, by comparing a large number of solutions. Finally, we draw some conclusions and guidelines for the development of IoT applications based on fog.     

物联网在产业中应用的探讨

本文首先阐述了物联网的概念以及现在的发展状况,同时介绍了物联网在产业中的应用和未来可能的发展趋势,最后介绍了物联网在网络信息化产业中的应用.