基于Zigbee技术的起重机远程监控系统

为提高起重机安全监控的效率,文中给出了一种基于Zigbee无线通信技术的起重机智能远程监控系统。该系统将Zigbee无线通信技术与起重机监控技术相结合,采用三级式的网络分布策略,可实现不同用户对起重机工作状态的远程监控,并针对不同的现场环境给出了不同的通信方式,同时引入了超帧调度算法避免网络节点之间的信标帧冲突,保证了起重机监控器通信节点的网络同步。该系统CPU采用MC9S12DG128,使用CC2530实现Zigbee通信,实验证明对加强起重机安全有一定的作用。     

基于 Zigbee 技术的起重机远程监控系统

为提高起重机安全监控的效率,文中给出了一种基于 Zigbee 无线通信技术的起重机智能远程监控系统.该系统将 Zigbee 无线通信技术与起重机监控技术相结合,采用三级式的网络分布策略,可实现不同用户对起重机工作状态的远程监控,并针对不同的现场环境给出了不同的通信方式,同时引入了超帧调度算法避免网络节点之间的信标帧冲突,保证了起重机监控器通信节点的网络同步.该系统 CPU 采用 MC9S12DG128,使用 CC2530实现 Zigbee 通信,实验证明对加强起重机安全有一定的作用     

基于STM32智能医疗输液监控系统的设计

针对当前医疗输液监控系统存在的问题,设计了一套基于嵌入式STM32智能医疗输液监控系统。该系统通过智能输液监控装置检测输液的流速和输液瓶的液位,控制步进电机装置自动调节到设定的流速。通过无线传输模块将信息及时传送到上位机远程监控平台,医护工作人员通过上位机远程监控平台,实现对多个房间的智能输液监控装置进行监控和管理。同时本系统还具有声光报警、远程断液和个人信息查询等功能。经过测试,本系统工作稳定可靠,具有广泛的应用价值和发展前景。     

基于移动化网关的工业远程监控系统

针对传统工业远程监控系统所面临的成本和安全性等问题,以智能移动设备为核心设计了基于移动化网关的工业远程监控系统。该系统利用智能移动设备的无线通信能力,采用无线局域网技术收集工业系统的现场数据,同时采用无线广域网技术将数据转发至远程监控中心。该系统不仅降低了硬件成本,还可通过智能移动设备的管理实现工业现场网络与互联网的物理隔离,有效地保障了工业现场的信息安全。该系统在某热熔胶机的远程监控系统上进行了实验,结果表明该系统可以在远程计算机上实时可靠地监控工业设备的运行状态和更改设备参数,具有实用价值。     

变电站远程智能巡检系统研究与应用

基于传统变电站人工巡检的方式容易造成巡检不及时、漏检、故障判定不准、现场环境对人员安全性带来潜在危险等问题,通过融合监控技术、通信技术、信息处理技术,建立变电站远程智能巡检系统。这可以实现对各类输变电设备的实时感知、远程监控、智能巡检。系统采用浏览器/服务器(B/S)三层网络分布式结构,划分为应用端、网络通信端、服务端。通过布设的仪器仪表、监测设备进行终端数据采集。基于RS-232、RS-485标准接口,以及无线传输和以太网相结合传输方式,进行子站和检测装置间数据和图像信息传输,采用SQL数据库和Web服务器实现对不同数据类型的存储和访问。通过将该系统应用于实际变电站的远程巡检工作中,表明该系统有限实现了变电站远程图数采集和联动、远程智能巡检,能及时对故障设备发出预警,并有效处理设备缺陷。     

温室环境远程智能监控系统的设计与实现

根据达州的气候条件,设计了以AT89C52单片机为核心的温室远程智能监控系统。该系统包括上位机和下位机两部分,下位机主要负责数据的采集、环境的监测与控制;上位机在温室环境远程智能监控系统的辅助下完成对栽培技术管理、环境监控、水肥管理、病虫害管理、查询统计、决策管理、参数配置、设备控制等工作。实验结果表明,该设计满足了对温室大棚环境远程智能控制的要求,达到了预期的效果。     

基于Web远程监控系统的设计实现

远程监控系统是企业发展的一个重要应用领域。针对企业发展的应用需求,分析了远程监控系统设计方法,设计与实现了一种基于B/S架构的Web发布系统,并对Web远程监控系统进行了研究。从身份验证和数据安全性两方面详细论述了Web远程监控发布系统的安全机制。该系统依托某区给水加压泵站系统,以WinCC Web Navigator为工具,通过Intemet/Intranet实现了Web远程监控的功能,解决了泵站无人值守、远程访问的难题,降低了监控系统的开发和维护成本。     

智能投料机远程监控系统

为适应沥青拌合站外掺剂投料过程中存在的质量管理和成本控制需求,设计并实现了智能投料机远程监控系统.该系统通过中国移动现有的GRPS/GSM对智能投料机进行远程监控,具有数据采集与传输、数据监测、分析、统计和管理及报警处理等综合功能,实现了智能投料机实时监控、用户管理、报警、数据统计与分析.系统在山西省吉河高速公路投入使用,解决了智能投料机现场环境恶劣、监控难等问题,达到了对智能投料机远程监控的目标,有效的保证沥青混凝土的生产质量.     

基于模糊控制的农业大棚远程监控系统的研究

以带有ARM11处理器的智能模块为监控端,以PC为远程管理中心,开发了一套农业大棚环境远程监控系统。该系统监控端基于Linux系统实现对大棚环境的视频和参数采集;远程管理中心通过3G网络远程查看植物生长状况,并对采集的环境参数经模糊控制器分析后,将控制信息通过3G网络发给监控端对相关设备进行控制。本系统实现了远程监控农业大棚的功能,对国内农业走智能化发展道路具有一定的参考价值。     

基于单片机的远程智能监控系统

基于单片机的远程智能监控系统,主控芯片选用AT89S52单片机,它连接家用传感器,包括人体红外传感器、火焰传感器、温湿度传感器等多种传感器,通过无线通信设备对家庭状态信息进行实时的监测.本文通过硬件与软件系统设计相结合,从而完成对家庭设备状态实现远程智能监控.     

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。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.