智能光网络中的光通道性能监测技术及其应用

光通道性能是影响业务信息有效传送的关键因素。本文在介绍三个基本光通道性能参数的基础上,详细分析了多种光通道性能监测技术的主要原理,然后探讨了这些技术在智能光网络中的应用。     

Integrating Smart Building Energy Data into Smart Grid Applications in the Intelligent Secondary Substations

Automation has arrived in the low voltage grid domain. In the next few years, the secondary substation —at the barriers of medium and low voltage grids—will thus be upgraded to enable novel functions. In this paper, we present various smart grid applications running on such intelligent secondary substations (iSSN) including their interaction with each other. We integrate energy consumption and production data, as well as forecasts, sensed from the smart buildings’ energy management systems (BEMSs) into the operation of the low voltage grid. A suitable framework for those modular applications includes features to initiate their installation, update, removal, the remote operator site, and not requiring staff on-site for such typical reappearing maintenance tasks.     

网格计算中基于软件架构的自适应性方法研究

网格应用必须不断地动态适应变化的环境。在许多情况下，适应性在每个应用基础上是以专案化的方式实现的，条件或环境一旦改变，原来的适应机制就会无效。文章描述了使适应性一般化的软件机制，以便运用一个越过应用的适应性框架实现适应性。这个框架利用系统的软件架构模型去分析应用是否需要这种适应性，并允许将修复代码写入架构模型的上下文中，然后传递到运行系统。     

Research of Adaptation of Infrastructures for WSRF in Grid Computing

1IntroductionGrid Computing is a promising emerging technologythat is growingin mindshare andrelevanceintheindus-try .Applications that take advantage of Grids are underdevelopment in both academic and commercial organiza-tions[1].GBuilderis anintegrated development platformwe worked out based on extant Grid Computing toolk-its .It encapsulates the complicated Webservice compil-ing,deploying over these infrastructures ,informs usersof intelligible information about mid-outcomes and er-rors …     

Coordination in Intelligent Grid Environments

A computational grid is a complex system. The state space of a complex system is very large and it is infeasible to create a rigid infrastructure implementing optimal policies and strategies which take into account the current state of the system. An alternative to a rigid infrastructure is to base the system's reactions on logical inference, planning, and learning, the quintessential elements of an intelligent system. An intelligent grid is one where societal services exhibit intelligent behavior. A coordination service acting as a proxy on behalf of end users reacts to unforeseen events, plans how to carry out complex tasks, and learns from the history of the system. Various policies implemented by the societal services of an intelligent grid, such as brokerage and matchmaking, are based upon rules and facts gathered with the aid of a monitoring service. The question we address is how to construct intelligent computational grids which are truly scalable and could respond to the needs of a diverse user community. We present a prototype of a system used for a virtual laboratory in computational biology.     

Infrastructure for Intelligent Automation Services in the Smart Grid

The electricity grid is undergoing a radical transformation from a production-driven to a demand-driven energy delivery platform known as the smart grid. The integration of a large amount of renewable and distributed energy resources, together with new patterns of electricity production, accentuates the need for research in information and communication technologies to control bi-directional energy flows. The European FP7 project: “Energy Demand Aware Open Services for Smart Grid Intelligent Automation” is contributing to this research by providing an intelligent infrastructure for service deployment for the smart grid. The project defines a system architecture that provides interoperability between wireless sensors in home area networks connected over the Internet to a service provider function deployed in a cloud infrastructure. A key component in this infrastructure is the Home Energy Controlling Hub that, on the one hand, provides a platform for monitoring and aggregation of electricity consumption data from devices and appliances and, on the other hand, is the link between the deployed intelligent automation services and the home. To ensure openness and simplicity, the proposed infrastructure is based on the representational state transfer style architecture. This is adopted by implementing the emerging ZigBee IP and Smart Energy Profile 2.0 standards that to a wide extend conform with the Internet Protocol suite and state-of-the art web services development.     

网格化无线电监测初探

为有效提升频率资源利用率,强化频率使用监管机制,开展频谱管理新技术的研究。网格化无线电监测系统作为下一代无线电监测网络的发展趋势之一,受到无线电管理部门的广泛关注。首先分析了传统无线电监测面临的挑战和网格化监测的特点,进而探讨了网格化无线电监测系统的体系结构、关键技术及其应用。可以发现,将网格技术应用于无线电监测,形成网格化的监测模式,可以有效提高电磁环境监测能力。     

基于架构的软实时软件的自适应框架的研究

随着移动设备的普及和普适计算的发展,用户需求多样化,实时系统在动态运行环境中得到了广泛应用.然而,现有自适应框架通常无法处理资源竞争和系统更改问题.本文提出了一种基于结构的自适应软件框架,为管理实时组件的互相依赖性和生命周期提供一种有效而统一的方法,为云计算服务提供实时计算方面的支持;提出了一种实时组件的运行时服务以掌控全局,控制组件的整个生命周期,并能保持现有的实时组件承诺的需求,以应对运行时的变化.这一框架易于用约束描述语言进行扩展并集成其他约束解析政策.最后,本文通过一个模拟控制应用程序对本框架从适应性和性能两方面进行了测试.     

安森美智能电网及智能家庭解决方案

各种电子产品正在趋向＂智能＂,增强连接性能及提升能效等方面正经历着全球性的技术发展。为了配合物联网、智能电网/电表、智能家庭的发展趋势及要求,安森美半导体提供了符合趋势要求的工业通信方案及安全保护方案,如用于远程自动抄表（AMR）、建筑物自动化、智能家庭及智能街灯等的新电力线通信（PLC）调制解调器、M-Bus从收发器、KNX收发器、接地故障断路器（GFCI）保护方案等。     

智能电网技术在电网监控系统中的应用

智能化电网技术在电网监控系统中的作用是多样化的。因此,对智能电网技术进行分析,对其使用性能、技术应用等进行阐述,并对电力监控系统的重要性进行介绍,以进一步促进智能电网技术的发展。     

电网监控的最新方案

简介满足电网监控要求的最新16位、8通道同步采样SAR ADC.     

元数据适配器与面向空间信息应用的数据网格

提出了一种将具有不同语法与语义特性的元数据解释成为应用所需要的格式和语义的元数据适配器,并将元数据适配器使用到空间信息网格之中,基于数据的内在特性构建分布、异构、协同、单一访问接口的遥感数据目录,进而实现适合于空间信息应用的更加强大和灵活的数据网格.在构建"汶川地震应急遥感数据服务系统"的过程中,所提出的元数据适配器和空间信息网格的相关技术在实用性和有效性等方面得到了验证,证明了元数据适配器在整合多源遥感元数据和构建面向空间信息应用的数据网格的可行性和高效率.     

A Bandpass Filter With Inherent Gain Adaptation for Hearing Applications

In this paper, we propose a novel bandpass filter design that incorporates automatic gain control (AGC). The gain control in the filter reduces the performance requirements of a wide-band AGC, and allows for low-power multichannel compression. The filter achieves up to 15 dB of compression on a 55-dB input dynamic range and is tunable over the audio frequency range, with microwatt power consumption and <5% harmonic distortion.     

Asynchronous Modular Contactor for Intelligent Motor Control Applications

R&D activities have been carried out for decades by many researchers in order to improve electromechanical contactor performance employing electronic control. This includes electronic controlled contactor opening to minimize contact erosion, and closing to reduce contact bounce, but the improvement is limited with significant increase of cost and size due to the inherent design structure of contactors: simultaneously switching of all three poles. Meanwhile, solid-state motor starters have shown great benefit with point-on-wave (POW) switch-on to minimize transient current and torque stress of induction machines during motor starting process. However, cost and size is a premium. A novel technology that employs asynchronous modular concept and POW switching has been developed. This improves motor starting and contactor switching performances in respect to switching transients and contact erosion while utilizing small size and low cost electromechanical contactors. These contactors are assembled into a flexible modular contactor assembly that allows each pole to be switched independently with precise POW switching control. This paper will focus on motor starting applications to achieve significant reduction of motor starting transients and contactor switching capability improvement. Asynchronous modular contactor prototypes with newly developed 24-VDC controlled contactors have been developed. The evaluation tests of the prototype proved significant transient current and torque stress reduction during motor starting.      

一种智能型电网设备红外诊断系统的设计

目前广泛开展的电网红外诊断工作,受检测环境及人员专业水平的影响较大,广泛使用的红外热像仪自动化、智能化水平还不够高。本文提出了一种智能型电网设备红外诊断系统,系统包括环境参数模块、测距模块、设备类型识别模块、设备材料判断模块、发射率设置模块、测温模块、报告生成模块。系统自动检测环境温度、湿度、风速、与设备的检测距离,自动识别设备材料类型确定发射率,将以上参数自动在热像仪中进行设置。热像仪通过图像识别判断设备类型,按照该类设备红外诊断标准的判断方法和准则,自动读取设备相应位置的温度数据,计算得出检测结论。系统不仅减少了红外检测人员携带装备数量,而且实现了仪器检测参数自动设置、设备类型智能识别、检测结论自动生成,降低了对检测人员专业水平的要求。     

智能汽车监控系统

在货车的行驶过程中,货仓内发生的情况往往是司机所不知晓的,因而给行车安全以及运输货物的安全带来了极大的隐患.为了实现将货仓内的环境信息实时地传送给驾驶司机,当险情突发时,司机能够在第一时间采取必要的防范措施,以保证行车安全.文章设计的系统集中了温度传感器、湿度传感器、烟雾传感器、光照强度传感器、红外防盗传感器以及GPS定位来保证货物安全,同时实现了货车防盗的功能.     

网格在企业信息化中的应用

介绍了网格计算的基本概念及其优点、体系结构,展望了网格应用于企业信息化的发展前景,并重点探讨了网格在企业信息化应用中的关键问题——网络安全问题。     

一种网格节点信誉评价算法及其在服务网格虚拟组织构建中的应用

 本文提出了一种新的服务网格节点信誉评价算法．通过构建由实体间的直接信任构成的有向加权图,并通过修改经典的Dijkstra算法来计算实体间的推荐信任,结合直接信任刻画实体间的信誉评价,同时,该算法参考虚拟组织发起者对虚拟组织愿景特征的理解,将组织间信任关系以及虚拟组织所需服务或资源的种类作为信誉评价的重要依据,细粒度刻画候选者实体的信誉,从而适合具有自治域的服务网格环境中虚拟组织的构建．仿真实验表明,该算法能够较为真实地反映网格实体间的信任关系,有效遏制不良节点对服务网格系统的危害,对虚假交易攻击以及诽谤攻击均具有较强的抵御能力．     

网格应用模型及方法研究

针对实现资源共享和协同工作的网格技术应用研究与发展现状，文章给出网格应用总体结构；根据Petri网系统特点，提出基于Petri网的服务流网SF—net模型，设计了基于UML的网格工作流程序的一般性开发方法。并在此基础上定义了基于Petri网的网格作业描述语言；讨论了当前工业界Web服务业务过程执行语言BPEL4WS及进程代数CSP与文中所提服务流网的结合，引入服务代数概念，表明了服务流网SF-net的灵活性。