基于PSTN的家用电器远程控制系统设计

本系统以Philips公司单片机P89LPC932为主控制器,以双音多频解码电路芯片MT8870为核心,通过公众电话网实现对家用电器的远程多路智能控制;同时利用语音芯片APR9600具有的语音提示功能,使用户在使用系统的过程中达到一种人性化的效果。本文详细介绍系统中振铃检测电路、模拟摘挂机电路、双音频信号(DTMF)解码电路、语音提示电路及通道控制电路几个部分。     

基于网络的混合信号边界扫描测试系统的设计与实现

将边界扫描技术与网络技术结合,解决高密度电路系统特别是混合信号电路及复杂测试环境带来的测试问题,可实现远程测试与故障诊断;设计了一种基于网络的混合信号边界扫描测试软硬件系统,硬件部分设计了边界扫描测试控制器、网络接口电路并实现了硬件底层驱动程序,软件部分实现了边界扫描测试系统程序和网络接口功能函数;对被测电路进行测试验证,测试结果表明系统可完成混合电路的远程边界扫描测试,具有较好的应用前景。     

低空多物理场图像声呐远程监控应用设计

为解决当前系统存在的监控实时性差、抗干扰能力弱、监控精度低等问题,提出低空多物理场图像声呐远程监控应用设计。分析声呐远程监控原理和图像质量检测原理,对系统硬件部分的图像数据处理服务器、图像数据处理工作站和图像数据传输电路进行改进,优化开发系统软件的图像数据模拟发送、实时显示、接收和发送功能,完成低空多物理场图像声呐远程监控系统的设计。实验结果表明,该系统的监控实时性好,抗干扰能力强,监控精度高,满足远程监控的功能需求。     

基于单片机的防酒驾控制系统设计

设计了一种基于单片机的汽车防酒驾系统。系统以51单片机为核心,由酒精浓度采集调理电路、模/数(A/D)转换电路、按键电路、液晶显示器(LCD)显示电路、报警电路及继电器控制电路等组成。根据防酒驾系统功能需求,编制了系统软件并进行了性能测试。测试结果表明:该系统性能稳定、安全性较高,具有很强的推广应用价值。     

基于双RS485总线的液压支架运行状态监测系统开发

针对现有液压支架电液控制系统缺乏支架运行状态远程监测功能的问题,开发了一种基于双RS485总线的液压支架运行状态监测系统。该系统采用增强型RS485串口通信方式,数据传输速率达10Mbit/s;采用双RS485总线通信模式,可并行执行在线监测和远程控制任务;硬件电路设计采用光耦隔离电路、防高压侵入电路和故障保护电路等抗干扰措施,通过了GB/T 17626.5—1998中的浪涌(冲击)抗扰度试验。实验室及现场调试结果表明,该系统实现了液压支架运行状态的远程在线监测功能,实时性及抗干扰能力强。     

基于Profinet的电能远程监控系统

提出一种以Profinet为核心的电能远程实时监测系统,通过构建Profinet的电能远程实时监控平台,对Profinet的核心硬件电路的智能控制实现远程设备的实时监测,同时该系统与远程故障诊断系统相结合,可对整个公司的各个设备运行状态进行远程在线监视、故障诊断等功能.该文设计的部分监控系统,正应用于英格索兰的MES系统中.     

基于LabVIEW的音叉振动远程控制系统

在LabVIEW平台下设计了功能完整的音叉实验远程控制系统,使学生能够在异地操作真实的仪器,以远程方式完成音叉共振实验。客户端部分为用户提供了一个控制系统的平台,实现远程操作、自动化测量以及自动保存数据等功能,界面友好,操作方便。服务器部分则构建了整个系统的硬件平台,实现远程通信、仪器控制和数据采集等功能。     

一种新的车辆远程诊断系统的设计和实现

在对国内外最新的车载远程诊断系统平台的软件、硬件结构进行分析的基础上,设计并制作了基于GPS/GPRS的集车辆数据采集和预处理等技术的车载远程诊断系统。对车载诊断系统中终端硬件的各个部分以及软件部分的设计进行了论述,给出了电路框图和程序流程。车辆远程诊断系统的设计和工艺处理经测试符合车载标准。在上海泛亚汽车技术有限公司二年多的运行表明,该监控系统及车载终端运行稳定,功能满足需求。     

基于模糊PID算法远程温度控制系统的实现

针对实时温度控制对象,本文提出了一套远程控制系统,并结合了模糊PID控制算法,介绍了其电路组成和设计原理,实现了对远程温度系统的监视和控制功能。采集端主要实现温度采集、数码显示、温度设定、无线编码发射、加热开关控制等功能;监控部分主要实现无线解码接收、温度显示、报警等功能模块。本系统的研究成果是实时控制与无线传输结合的重大进步。     

基于数字传感器的分布式远程温度测控系统

提出了一种基于数字温度传感器的客户/服务器模式分布式远程温度测控系统新方案。阐述了数字温度传感器的工作原理和测量电路的设计方法,介绍了分布式远程温度测控系统的结构、各部分的功能及系统设计方法。现场控制器以AT89C52单片机为核心,采用socket技术实现用户对温度系统的远程控制,利用小波变换方法进行视频图像压缩。该系统具有结构简单、可靠性高和通用性强的特点,运行结果表明了其效果良好。     

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。