基于NB-IoT技术的智能井盖系统

针对目前城市井盖管理不善的问题,提出一种基于NB-IoT技术的井盖管理方法。利用带有芯片的智能井盖将监测到的井盖信息通过物联网技术上传到云平台,方便管理人员对井盖的监测与维修。文中构建的NB-IoT监控管理系统将终端监测设备、无线数据传输、物联网网关以及APP移动客户端相结合,通过实验证明基本实现了集中、实时的智能监控的目的。该系统为加强城市管理、解决安全隐患提供有力的保证,对提高城市井盖管理效率具有十分积极的作用。     

物联网技术在智能装备中的应用

为了延长制造型企业大型设备使用寿命,降低维护成本,开发设备综合监控与预警系统.该系统综合运用物联网技术、现场总线技术、无线技术、人工智能技术等,构建覆盖全厂范围的物联网络,实时采集设备信号,对设备故障进行预警.     

基于NB-IoT的城市井盖监控及管理

针对现在城市井盖管理不善导致交通事故,造成人员伤亡或者财产损失的问题,设计开发一种基于NB-IoT的城市井盖监控及管理系统。为了方便实时查看井盖的状态信息,基于NB-IoT的智能井盖智能监控井盖情况,只要井盖异常打开、翻转或移位,马上报警到管理中心平台及手机APP。管理平台带电子地图,方便管理及检修维护,通过后台和APP的报警信息能实时观测井盖的情况,并在井盖发生状况后及时进行修复和管理。文中构建的NB-IoT监控系统将GPRS无线远程通信技术、传感器、物联网网关、无线数据传输、Web集中控制平台、APP移动客户端和终端监测设备等技术相结合,智能监控井盖的信息,实现了集中、实时的智慧监管目的,对城市管理井盖具有一定的指导意义,为各大城市缓解城市井盖管理压力,提高城市井盖管理效率起到了非常积极的作用。     

一种基于NB-IoT的无线井下数据采集终端设计

针对城市窨井数量大、位置分散、安全事故频发、管理困难等问题，设计出一种基于窄带物联网技术（Narrow Band Internet of Things，NB-IoT）的井下数据无线采集终端。终端采用低功耗STM32芯片作为主控制器，NB-IoT无线通信模块采用BC26模组，数据采集终端具有自动采集数据、主动预警、初始蓝牙配置等功能。实验结果表明：所设计的无线采集终端功耗低、稳定性高，让城市井盖管理更加智能化，让故障检修更加便捷化，提高城市管理的智能化水平。     

物联网模块在集中供热系统中的应用

针对我国供热系统中存在换热站的网络信号差、铺设光纤成本高、使用维护需要额外费用等缺点，设计了一种基于物联网模块利用无线数据传输方式开发的供热控制系统。该系统使用物联网模块作为数据传输媒介，采用无线电数字通讯技术，可替代光纤、DTU等，可以降低企业成本，减少施工和维护难度。可解决网络信号差等通信困难问题，对集中控制室和换热站之间的无线数据传输有一定通用性。     

基于NB-IoT技术的煜栩智能井盖控制管理系统

本井盖系统设计方案内容包括系统概述、工作原理、部件介绍、基本参数、检验测试等内容。系统设计采用高靠电子装置及无线信号传输系统实时地检测井盖状态,用于预防和减少由于井盖破损、被盗、汽车过度重压以及井下水位过高导致的安全事故或损失。系统能及时地将报警信息传达到监控中心和巡查人员。智能井盖系统采用高强度复合材料构成盖体,可以在道路、广场、机场等场地水平安装使用。井盖破损报警原理:井盖盖体内有破损检测线圈,且与电子装置相连,一旦井盖破损,检测线圈断开,电子装置就会产生报。     

物联网传感节点的无线供电技术研究

传统的物联网传感节点多采用电池供电,大大限制了传感器节点在更加恶劣的环境中工作的可靠性。同时,大量电池的使用和更换,既浪费了人力也给环境带来了污染。射频无线供电将使传感器节点彻底摆脱传统电池供电的种种束缚与弊端,通过高频信号输出、高频放大器、势垒稳压电路、动态释放电路等模块进行非接触式的微电量传输。本文分析了物联网以及无线供电在国内外的发展现状,并对以上各核心电路模块进行了设计与描述,最后总结了射频无线供电在物联网领域的应用前景。     

基于物联网的智能用水监管系统

设计了一款基于物联网的智能用水监管系统,该系统由用水信息采集板卡、微信小程序和OneNET物联网云平台组成。系统采用STM32G070CBT6作为主控芯片,通过水质检测模块、水流量模块、电磁阀模块、ESP8266-01S WiFi模块和OneNET云平台大数据分析技术实现了用水信息实时监管、监控用水数据记录和漏水预警等功能。该系统可以检测水质、水温、用水总量、实时水流量等用水信息,并将数据实时传输至云平台,方便用户可以通过微信小程序实现数据的远程监控。系统根据用水信息分析,可以实现漏水预警功能。当收到漏水预警时,用户可以远程关闭进水总阀门,从而避免家庭漏水事故的发生。本文提出的智能用水监管系统具有一定的创新性和实际应用价值,对于家庭健康饮水和家庭水资源管理具有重要的意义。     

基于ZigBee与CAN的工程机械液压系统参数监测系统设计

为了实现工程机械液压系统相关参数无线、有线、远程实时监控,设计一种基于ZigBee和CAN总线的工程机械液压系统参数监测系统。该液压监控系统由现场数据采集节点,无线与有线通信模块及计算机监控中心组成;数据采集以英飞凌XC2267芯片为核心,通过传感器对液压抓斗的液压油油温、压强、液位等信号进行采集,利用ZigBee无线传感器网络与CAN 总线将采集的参数送给监控中心;如果工作参数异常,监控中心可以提醒现场操作人员进行预警。     

基于Arduino和IOT的家庭消防逃生报警系统

家庭安全一直是人们所关注的问题,但近五年来,每年家庭火灾的次数占总火灾发生次数的50%以上,亡人比例大幅上升。随着人们生活水平的提高,人们的安全意识逐渐加强,对家庭防火安全指数提出了更高的要求。而传统家庭消防逃生报警系统无法实现无线互联、自适应环境生成个性化探测指标并及时通知其他人并报警。为了解决这一问题,以Arduino作为核心控制器,采取物联网和传感器技术,将ESP8266模块与相关的硬件电路进行无线连接,通过APP获取室内实时监测的数据、火灾报警、远程开锁等。这种系统主要运用物联网技术,通过MQTT协议实现信号无线实时传输,弥补了传统系统的不足,能在第一时间联系到干系人,实现预警和协助逃生的目的。     

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.