嵌入式家庭网关的研究

针对基于Internet的分布式智能网络控制系统以及家用电器数字化的研究热点,详细论述了嵌入式家庭网关的软硬件系统设计方案.设计内容主要包括芯片选型、芯片特点、硬件电路设计、软件流程等等,并在此基础上抽象化了网络控制系统的体系结构以及远程控制的通讯模型,实现了从Internet到家庭网络的透明访问以及家用电器的远程监控.     

ARM和ZigBee的智能家居监控网络设计

提出了一种智能家居监控网络系统,该系统以ARM微处理器S3C2440为核心,采用浏览器/服务器和客户端/服务器模式,对外通过Internet局域网和无线局域网接入公共网络,在家庭内部通过基于德州仪器C2530无线收发芯片的ZigBee无线网络将家用电器与其他监控设备连接在一起组成无线家庭网络;通过Windows客户端或Web浏览器可以对家庭内部或家用电器进行状态查询和控制,在户内可以使用手持设备,基于Android系统客户端对家用电器进行控制和管理;实际测试结果表明,系统组网方便快捷、运行稳定可靠,能够达到智能家居系统的一般应用要求。     

基于HT46RU232单片机的智能家居电话远程控制系统

以HT46RU232单片机为核心,配接DTMF的MT8870解码芯片和ISD2550语音芯片,使用电话通信网络,设计一个智能家居电话远程控制系统.用于校验用户身份、远程控制家用电器、语音提示引导操作、家电状态查询等.可使操作者根据各种提示音及时了解受控对象的有关信息,并通过电话远程控制多个受控对象,实现家电的远程智能化...     

基于嵌入式Linux的工业控制系统

当前大多数应用于工业控制等领域的嵌入式系统都孤立于Internet网络之外。为利用Internet技术实现工业控制领域的低成本网络互联和远程监控，给出了基于ARM内核的32住高性能微控制器结合嵌入式Linux实现工业控制系统的设计方法，并介绍了控制系统单个节点的硬件和软件实现思想，以及系统的网络架构。该系统实现了通过Internet网络进行远程监测与遥控的功能，具有较好的实际应用前景。     

每周新闻

Intel将推出新型网络芯片 据报,Intel不日将在加州举行的Intel 开发商会议论坛上宣布推出定位于迅速发展的通信市场的新型网络芯片。届时,Intel还将宣布定义公司如何设计未来网络处理器和如何为网络芯片编写软件的新芯片架构。 这种名为Internet交换处理器(Internet ExchangeProcessor)或IXP 1200将作为交换机、路由器和其他通信产品的控制器。新型IXP结构将使用Intel 1997年由DEC公司购得的StrongARM技术以及最近通过23亿美元并购Level     

智能家居系统设计

利用stm32f103zet6处理器为系统控制核心,设计了一种智能家居控制系统。利用stm32单片机以及工作在2.4GHz~2.5GHz的ISM频段的单片无线收发器芯片nRF24L01构建家庭局域网。通过摄像头采集存储图像信息并利用GPRS网络以及Internet网络实时传送,实现了对家庭的远程监控,解决了防盗、防火以及防煤气泄漏等家居安全问题。同时系统用户界面能实时显示气象信息、安全警报信息、家居状态信息。整套系统利用太阳能充电电池与电网电源并联供电,节能环保。     

一种新型嵌入式智能家庭网关的设计

本文设计的是一种高性价比的电力线载波智能家庭网关系统,它以8位高速嵌入式微处理器SX52BD和电力线通信芯片SC1128为核心,并外扩多个功能模块构建硬件平台;通过移植嵌入式操作系统μCLinux内核,开发相应的硬件驱动、微型GUI和上层应用软件来搭建软件平台.该家庭网关对外与Internet和PSTN等网络相连,对内通过SC1128接口与家庭内网进行通信,从而实现通过Internet或PSTN对家用电器的远程监控.     

一种基于嵌入式Internet的控制系统

嵌入式Internet技术被广泛应用于现场仪表和工业设备层是工业控制网络的发展趋势介绍了一种基于该技术的控制系统的软、硬件构成以及基于嵌入式Internet实现的一些细节问题,说明了其意义和市场前景。     

基于覆盖架构的NCS最小代价调度策略

将覆盖网络引入到基于Internet的网络控制系统（NCS）中,讨论了一种适合于Internet网络控制系统的相近最小代价调度（MLCS）策略,并对其进行了优化。通过仿真系统表明,该基于覆盖网络的调度及其优化策略能有效地保证网络服务质量QoS,从而提高NCS的性能。     

基于工业以太网的高低压成套开关设备智能化控制系统

采用DSP和网络芯片LAN91115组成基于TCP/IP协议的高低压成套开关设备智能化控制系统,实现网络化的实时数据采集和数据存储以及电气动作远程控制,论述了DSP控制器对网络芯片LAN91115的控制方法。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。