基于OPC UA的电厂水务数据采集系统设计开发

在传统的工业制造领域,现场设备的基于开放通信标准的无缝集成是进行工厂数据采集和统一监控的必要条件。作为一个开放的协议,基于OPC UA的数据采集系统可以解决现场工业设备通讯协议的多样性带来系统软件开发的复杂度问题。以电厂水务系统中存在的各类感知层设备为对象,通过建立基于OPC UA的数据通信规范,将智能传感器、智能控制器和扩展通信接口后的普通IO设备连接到OPC UA服务器,实现现场数据的采集;再通过建立合适的客户端系统,实现对采集数据的数据库存储和在线访问。运行结果表明该系统的设计符合电厂水务系统的实际需求,为系统提供了精确及时的基础数据,提升了系统的管理效率。     

基于STM32的压铸机数据采集系统研究

随着用工成本的不断提高,对工厂设备进行自动化改造和升级,提高工厂的信息化水平,已成为各级政府和企业关注的重点。设计一套基于STM32的压铸机数据采集系统,对模具条码、压铸机状态等进行采集,并将采集数据发送到上位机处理。应用表明,该系统实现了对压铸机数据的自动采集,有利于生产管理人员对生产进程进行管控。     

基于云计算平台嵌入式传感器图像处理系统设计

针对传统的图像采集和处理设备体积庞大、昂贵价格和灵活性差等问题,提出了一种基于云平台的和嵌入式图像处理系统设计方案;在系统硬件设计中,采用MT9M001C12STM图像传感器代替传统的CCD来采集图像数据,采用云计算嵌入式设备作为前端数据处理平台;在系统软件设计中,主要设计了硬件设备的初始化和为用户提供操作硬件设备的接口以及将由驱动采集到的数据进行处理和转化成规定格式,对PC机发起通信,传输数据;最终实现嵌入式系统的采集、处理、传输图像数据。     

健康数据采集分析系统的交互设计研究

通过健康数据终端采集设备获取个人生命体征数据,将患者、医生两端实时连接,实现个人健康实时高质量的监控和跟踪,再对生命体征数据进行分析,为患者提供治疗参考方案。健康数据终端采集设备的交互体验设计,在系统应用中起着重要作用。     

微小型弹载图像采集系统设计

为在某大口径枪弹上实现图像数据的采集处理,设计了一种基于DSP和CMOS图像传感器的图像采集系统.介绍了系统的硬件结构、接口电路及程序设计,对采集到的图像数据进行显示验证,对系统的实时性进行了分析.结果表明:该系统可采集到清晰的图像数据,最高帧频可达到36 fps,为大口径枪弹上的图像采集提供了一种可行方案.     

利用WMI实现移动智能设备对服务器性能的监控

通过使用WMI可以获取服务器硬件信息、收集服务器性能数据、操作Windows服务,甚至可以远程关机或是重启服务器.由于允许通过编程方式访问相关的管理信息,在.NET Framework中的WMI基于原始的WMI技术,允许利用.NET Framework中的编程优势进行同样的应用程序和提供程序开发,也就为在移动智能设备上实现对Windows服务器性能的监控与管理提供了可能.     

基于Android系统的汽油氧化安定性测定仪的设计

基于android的汽油氧化安定性测定仪采用C/S架构实现,经过深入了解汽油氧化安定性测定仪的国家标准,结合工厂实验室用户的需求,对前几代产品进行调研,经过设计的调整和分析,开发了基于android操作系统的汽油氧化安定性测定仪,通过串口进行数据传输,对PLC控制板进行指令交互,系统提供有数据存储、基础数据设定、试验数据校验、设备调试、异常上报和试验操作控制等功能。     

混合总线数据采集系统在高空模拟试验中的应用

从发动机高空模拟试验对测试系统的要求出发,对VXI和LXI这两种总线的优势及特点进行了比较与分析,进而提出了一种新的基于LXI、VXI混合总线平台的数据采集系统的方案,并对该数据采集系统的关键技术、主要特点以及其在高空模拟试验中的重要作用进行了进一步的阐述;该系统在试验中的成功应用表明其完全满足高空模拟试验的要求,而且可以进一步提高测试系统的集成化、信息化和智能化水平及整体测试能力。     

基于RFID技术的车载武器信息采集系统设计

针对装备寿命评估中,对车载武器系统各配套设备都有全面的掌控的需求,设计一种基于MSP430单片机和射频芯片的数据采集系统,给出了系统构成和各个模块的实现方案,提供了采集端通过触发时钟记录装备使用过程的程序流程,并针对可能存在的干扰,设计了基于跳频通信的抗干扰方式;最后对系统传输性能进行了测试,验证了其在40m内能顺利完成读写。     

基于LoRa的中小企业工厂安防监测系统设计与实现

针对传统工厂安防监测系统通信距离短、成本高、稳定性差的问题,在深入研究的基础上融合新一代信息技术,设计了一套基于LoRa的中小企业工厂安防监测系统。系统通过烟雾传感器、温湿度传感器、火焰传感器、CO₂传感器等对环境状态进行实时采集,采用点对点、点对多的LoRa组网方式进行数据透传,并同步写入云服务器端MySQL数据库,实现云平台的工厂安防监测、预警、数据分析和智能处理等功能。实验表明,该方案有效。     

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.