一种基于可信计算平台的无线传感器网络标识密钥更新方法

针对无线传感器网络使用标识密码的密钥更新问题,设计了一种以可信计算平台为密钥生成中心,利用单向函数构造随机数池的高效密钥更新方案,使得传感器节点既能对密钥更新消息进行验证,又不至于引起过多的网络通信。为保证通信密钥的安全性,使用可信计算平台作为密钥生成中心,保证了密钥源头的安全。密钥更新时,利用可信计算平台的特性对其平台配置情况进行验证,来判断其所发出的消息和密钥的真实性与完整性。利用单向函数产生随机数池,一方面使得传感器节点可以验证消息的真实性,另一方面可以抵抗重放攻击。     

A holistic approach to decentralized structural damage localization using wireless sensor networks

Wireless sensor networks (WSNs) have become an increasingly compelling platform for Structural Health Monitoring (SHM) applications, since they can be installed relatively inexpensively onto existing infrastructure. Existing approaches to SHM in WSNs typically address computing system issues or structural engineering techniques, but not both in conjunction. In this paper, we propose a holistic approach to SHM that integrates a decentralized computing architecture with the Damage Localization Assurance Criterion algorithm. In contrast to centralized approaches that require transporting large amounts of sensor data to a base station, our system pushes the execution of portions of the damage localization algorithm onto the sensor nodes, reducing communication costs by two orders of magnitude in exchange for moderate additional processing on each sensor. We present a prototype implementation of this system built using the TinyOS operating system running on the Intel Imote2 sensor network platform. Experiments conducted using two different physical structures demonstrate our system’s ability to accurately localize structural damage. We also demonstrate that our decentralized approach reduces latency by 65.5% and energy consumption by 64.0% compared to a typical centralized solution.     

无线传感器网络云仿真平台架构设计

无线传感器（WSN）已经成为当前的研究热门,但是仿真实验平台的建设较为滞后。受资金、环境、信息的局限,当前对传感器网络的研究多停留在理论上,实验方法和实验结果不具有通用性,权威性,影响了传感器网络协议的标准化、工业化进程。本文在详细分析现有仿真软件利弊的基础上,提出一个无线传感器网络云仿真平台,利用互联网技术和虚拟化技术,构建了包含交互中心、计算中心和存储中心的分布式云架构,从根本上解决现有软件在可用性、兼容性、易部署管理性上存在的问题,总结并提出传感器网络协议仿真平台未来的发展趋势和开发任务。     

基于CC430无线传感网络实验平台的开发

以德州仪器公司CC430系列无线超低功耗单片机为核心,设计了一套无线传感网络实验开发平台,阐述了平台的硬件电路及其实验程序,并对SimpliciTI协议进行了应用.该平台支持多种传感器节点,支持多种小型协议栈,开发灵活,有助于工程技术人员熟悉和掌握无线传感网络的构成和应用开发,实验程序可以非常灵活地应用到实际工程项目当...     

基于 Android 智能手机的健康监护终端研究

移动通信、智能计算等技术的飞速发展和智能终端的日益普及为移动医疗的实施和广泛应用提供了机遇。本文设 计并实现一种基于 Android 手机的人体生理参数监护终端。生理信号采集传感器与手机终端之间利用蓝牙无线通讯技术组 成躯域传感器网络,实际应用表明该终端可实现对患者的监护、诊断和健康管理。     

Constructing a secure hacking-resistant IoT U-healthcare environment

There has been an increasing demand of work that required high level of computing power in IoT or establishment of server in IoT environment due to development of computing power. Excessive diagnosis has recently been a significant issue in the field of medicine. Excessive diagnosis issue is expected to be significantly reduced if establishing the easily configurable IoT server, communication with medical devices, and communication among hospitals by transmitting medical results to users. With the advancement of hacking technology, many hackers are interested in medical information and medical infrastructure, and the Information Security Management System (ISMS) is expanding in Korea. A number of medical ISMS projects are discussed, based on ISO 27791 standards derived from ISO 27001 standards. Large hospitals in South Korea have a variety of platforms that misrepresent personal information, and various platforms deal with sensitive medical information, but small and medium-sized hospitals use platforms that are not considered legal considerations.In this paper, we intend to establish a legal information sharing platform, which is legally considered legally limited and is responsible for the safety of the medical information.In the IoT server with limited resources, light-weighted and user-friendly protocols are frequently utilized over those that derive traffic and consume much resource. Under these circumstances, this study is intended to suggest IoT network that medical devices are able to create ubiquitous environment for users by utilizing simple service discovery protocol as a protocol provided without imposing much burden on limited resources and highly secured extensible messaging and presence protocol.     

ComBos: A complete simulator of Volunteer Computing and Desktop Grids

Volunteer Computing is a type of distributed computing in which ordinary people donate their idle computer time to science projects like SETI@Home, Climateprediction.net and many others. In a similar way, Desktop Grid Computing is a form of distributed computing in which an organization uses its existing computers to handle its own long-running computational tasks. BOINC is the main middleware that provides a software platform for Volunteer Computing and desktop grid computing, and it became generalized as a platform for distributed applications in areas as diverse as mathematics, medicine, molecular biology, climatology, environmental science, and astrophysics. In this paper we present a complete simulator of BOINC infrastructures, called ComBoS. Although there are other BOINC simulators, none of them allow us to simulate the complete infrastructure of BOINC. Our goal was to create a complete simulator that, unlike the existing ones, could simulate realistic scenarios taking into account the whole BOINC infrastructure, that other simulators do not consider: projects, servers, network, redundant computing, scheduling, and volunteer nodes. The outputs of the simulations allow us to analyze a wide range of statistical results, such as the throughput of each project, the number of jobs executed by the clients, the total credit granted and the average occupation of the BOINC servers. The paper describes the design of ComBoS and the results of the validation performed. This validation compares the results obtained in ComBoS with the real ones of three different BOINC projects (Einstein@Home, SETI@Home and LHC@Home). Besides, we analyze the performance of the simulator in terms of memory usage and execution time. The paper also shows that our simulator can guide the design of BOINC projects, describing some case studies using ComBoS that could help designers verify the feasibility of BOINC projects.     

一种面向协同设计业务处理的中间件结构及其实现

在协同设计系统网络分布计算模式的基础上，提出了以协同设计业务处理中间件为对象主体的网络分布计算环境平台，重点研究了面向协同设计业务处理的中间件结构及其核心功能模块，并以公共数据接口和数据通信线程控制协议为例，分析了协同设计业务处理中间件的程序实现及其实际应用．     

Beyond ubiquitous computing: The Malaysian HoneyBee project for Innovative Digital Economy

In the proposed advanced computing environment, known as the HoneyBee Platform, various computing devices using single or multiple interfaces and technologies/standards need to communicate and cooperate efficiently with a certain level of security and safety measures. These computing devices may be supported by different types of operating systems with different features and levels of security support. In order to ensure that all operations within the environment can be carried out seamlessly in an ad-hoc manner, there is a need for a common mobile platform to be developed. The purpose of this long-term project is to investigate and implement a new functional layered model of the common mobile platform with secured and trusted ensemble computing architecture for an innovative Digital Economic Environment in the Malaysian context. This mobile platform includes a lightweight operating system to provide a common virtual environment, a middleware for providing basic functionalities of routing, resource and network management, as well as to provide security, privacy and a trusted environment. A generic application programming interface is provided for application developers to access underlying resources. The aim is for the developed platform to act as the building block for an ensemble environment, upon which higher level applications could be built. Considered as the most essential project in a series of related projects towards a more digital socio-economy in Malaysia, this article presents the design of the target computational platform as well as the conceptual framework for the HoneyBee project.     

Using Sensor Inputs to Affect Virtual and Real Environments

This article discusses several networked media projects that use sensor technology to transmit data from real-world environments to virtual environments. The Eolus One project uses an experimental virtual control room to run building systems and provide a better communication network among its users. A 3D application design group called green phosphor creates code for translating n-dimensional information into 3D interactive formats for real-time effects. The Parsec voice controller system uses sonic inputs to control 3D graphical objects on the second life virtual platform. This article focuses on the design principles applied by the three projects at this experimental stage of x-reality design.     

Application of Embedded Network Distributed Network in Student Physical Health Management Platform

The embedded network platform for wearable telemedicine is primarily designed for the objective, accurate and non-invasive physical activity assessments. The site proposed here offers a trade-off between measurement potential and accuracy. The proposed site is easy to use for both athletes and researchers/physicians. The next stage in the evolution of predictive methods is decentralized prediction. This white paper outlines these structures, raspberry system setup tricks, and various possible projects. By using smart sensor gadgets with embedded telecommunication functions, molecular channel systems commonly used by administrators can be effectively activated to maintain battery health. Clinical and well-being administration admin, additionally called medical services heads or medical care presiding officers, plan, direct, and organize clinical and well-being administrations. The particular clinical territory or division, or clinical practice to gather through doctors' embedded devices. The Health Care Systems Manager coordinates medical care associations that convey clinical consideration through direct patient consideration in regions of specialization, including understudy clinical focus administrations, clinical crisis administrations, nursing, well-being and health focus the board, psychological wellness effort. Arranged implanted frameworks are pulling in increasingly more consideration, and their utilization in the current organization situation is of questionable significance. The exploration network and industry for network availability, information preparing and administration conveyance frequently propose novel installed arrangements dependent on network processors.     

基于GAE云计算的区域移动医疗服务平台

针对医疗信息化与互联网应用现状, 提出面向区域移动医疗网络服务平台概念. 在分析移动医疗及其发展现状、云计算及其关键技术和Android平台应用开发模式的基础上, 首先提出基于云计算的移动医疗服务平台整体架构, 并分别从信息资源提供层、云计算平台层、医疗服务层和移动应用层等四个方面进行阐述; 然后在研究Google App Engine云服务平台的基础上, 对基于GAE的移动医疗服务平台的服务器端与客户端技术、数据模型等关键技术进行详细描述; 最后给出基于GAE的移动医疗服务平台的系统实现, 分别从平台服务器端和移动客户端两方面进行描述, 其中客户端实现基于Android移动操作系统, 为普通用户提供专家门诊信息、医药用品信息及其他功能.     

基于混合计算模型的分布式传感器网络数据收集*

首先分析了传感器网络中两种计算模型的特点;然后针对装甲集群状态监控的实际需求,提出了基于无线传感器网络的装备状态监控系统的基本结构.分析了用于前端数据收集和传输的两层传感器网络的不同特点,结合client/server和移动agent模型的优点,提出基于混合计算模型的分布式传感器网络数据收集机制,在相对独立的车载监测网络中基于client/server模型建立数据收集机制,在车载监测网络之间基于移动agent模型建立数据收集机制.     

Optimized Hexagon-Based Deployment for Large-Scale Ubiquitous Sensor Networks

Ubiquitous Sensor Network describes an application platform comprised of intelligently networked sensors deployed over a large area, supporting multiple application scenarios. On one hand, at the user-end, storing and managing the large amount of heterogeneous data generated by the network is a daunting task. On the other hand, at the network-end, ensuring network connectivity and longevity in a dynamically changing network environment, while trying to provide context-aware application data to the end-users are very challenging for the resource constrained sensor network. While cloud computing offers a cost-effective solution for storage of the large volume of data generated by the underlying heterogeneous network, an equally elegant solution does not exist on the network interface to provide application-aware data. In this paper, we propose the use of cognitive nodes (CNs) in the underlying sensor network to provide intelligent information processing and knowledge-based services to the end-users. We identify tools and techniques to implement the cognitive functionality and formulate a strategy for the deployment of CNs in the underlying sensor network to ensure a high probability of successful data reception among communicating nodes. From Matlab simulations, we were able to verify that in a network with randomly deployed sensor nodes, CNs can be strategically deployed at pre-determined positions, to deliver application-aware data that satisfies the end-user’s quality of information requirements, even at high application payloads.     

基于LT码数据分发协议性能分析

无线传感网络节点数目庞大,能量消耗大,传感器节点的计算和存储能力有限,网络丢包率较为严重。为了设计节能可靠的网络协议,降低节点的能耗,在TinyOS网络平台上设计实现了基于LT码的数据分发协议,在仿真环境TOSSIM上进行了性能分析,仿真结果表明,基于LT码的数据分发协议,更好的展示了LT码的无比率特性,提高了网络数据传输的可靠性,降低的网络负载。     

网络并行计算在物探数据处理中的应用

通过构建PVM的网络并行计算平台，将并行计算的环境应用于勘探地球物理的计算中，利用互联网上的计算机资源实现大问题的并行计算，使得许多优秀的算法得以体现和广泛地应用。该文介绍了系统平台的构建、任务的划分和分派、处理结果的回收及对系统效果进行评价等内容。     

无线传感器网络操作系统TinyOS的研究

无线传感器网络（Wireless Sensor Network,简称WSN）综合了传感器技术、嵌入式计算技术、现代网络、无线通信技术及分布式信息处理技术。本文介绍了无线传感器网络及无线传感器网络操作系统的特点,分析了具有代表性的无线传感器网络操作系统TinyOS,最后指出TinyOS调度策略的不足,提出一点改进的意见。     

基于NS-3的水声传感器网络CW-MAC协议吞吐量分析

随着微型传感器技术、无线通信技术、微电子系统制造技术以及嵌入式技术的发展,集感知、存储计算和通信能力于一体的无线集成传感器得到越来越广泛的应用,水下传感器网络就是其中的一个重要应用领域。针对水下传感器网络的特性,详细阐述基于竞争的CW-MAC协议基本思想和新型网络仿真平台NS-3,并在NS-3上搭建仿真场景,对CW-MAC协议进行模拟仿真。改变仿真节点参数,着重比较每次仿真结果得到的信道平均吞吐量。仿真结果为搭建最佳水下通信节点条件提供重要依据。     

基于云计算的多投影系统项目管理与安全设计

在传统的多投影显示系统中,各类媒体资源文件都散乱地存放在本地,并且占用较大的存储空间,使用本地存储设备难以对所有项目的文件进行管理与存放。针对该问题,提出基于云计算的多投影显示系统在线项目管理解决方案。通过Amazon云计算平台实现多投影项目的在线管理,注册并创建项目与进度信息,利用云平台海量存储空间以及可伸缩计算能力,导出与项目相关的工程文件、图像、视频等资源文件,并打包上传到云端对应的项目中。测试结果表明,该方案能正确建立项目与文件的对应关系,方便用户对项目进行管理与维护,缓解本地存储的压力。     

An approach based on the domain perspective to develop WSAN applications

As wireless sensor and actuator networks (WSANs) can be used in many different domains, WSAN applications have to be built from two viewpoints: domain and network. These different viewpoints create a gap between the abstractions handled by the application developers, namely the domain and network experts. Furthermore, there is a coupling between the application logic and the underlying sensor platform, which results in platform-dependent projects and source codes difficult to maintain, modify, and reuse. Consequently, the process of developing an application becomes cumbersome. In this paper, we propose a model-driven architecture (MDA) approach for WSAN application development. Our approach aims to facilitate the task of the developers by: (1) enabling application design through high abstraction level models; (2) providing a specific methodology for developing WSAN applications; and (3) offering an MDA infrastructure composed of PIM, PSM, and transformation programs to support this process. Our approach allows the direct contribution of domain experts in the development of WSAN applications, without requiring specific knowledge of programming WSAN platforms. In addition, it allows network experts to focus on the specific characteristics of their area of expertise without the need of knowing each specific application domain.