基于VC++的变电站监控软件通信模块设计

工业变电站监控软件系统中通信模块的设计开发,将直接关系到现场监控器与上位机及上位操控命令间安全可靠实时的进行信息交互.针对工业变电站监控软件的开发,基于VC 平台和UART协议,提出了一种监控软件通信模块设计方案,开发了通信软件模块,并与变电站微机监控器进行了联网调试.结果表明,该通信模块实现了与相关协议微机监控器间安全、稳定和实时的数据通信,各项指标符合设计要求,验证了该通信模块的有效性.     

工业互联网环境下的智能制造全过程实时监控系统研究

为实现对工业智能生产制造的实时监控,开展工业互联网环境下的智能制造全过程实时监控系统的设计研究。合理选择传感器、服务器、监控器、PLC等硬件,设计监控系统架构；在硬件设备的支撑下,针对各个基础设施所需传输的信息,构建对应的通信信息模型,确定可被公开的信息,建立工业互联网环境下智能制造车间实时通信连接；在终端监控界面中,操作主屏,按下System功能键,选择制造单元远程监控程序,进入系统实时监控界面,实现对制造单元的远程监控；建立数据库,更新数据库信息,实现对实时反馈数据的管理。设计对比实验,实验结果证明：该系统可以在实现对智能制造生产车间工况高精度监控的同时,控制监控数据的反馈时延。     

水下拖曳升沉补偿系统的非参数模型自适应控制

水下拖曳系统拖曳作业时, 拖船航速变化和升沉运动使拖体深度产生较大范围变化. 为补偿拖体深度变化, 本文提出了由外层深度升沉补偿控制系统和内层位置伺服控制系统双层结构的水下拖曳升沉补偿系统总体设计方案, 运用基于紧格式线性化的非参数模型自适应控制方法设计了系统外层深度升沉补偿控制器. 仿真研究表明, 应用了非参数模型自适应控制方法的水下拖曳升沉补偿系统具有良好的动态性能和抗干扰能力.     

电动机监控系统的设计与实现

为了解决原有监控系统不能实现远程监测、监测信息最少等问题,设计了一种电动机运行状态监控系统.该系统由一台主控计算机和多个电动机监控器构成.电动机监控器以STC89L516AD单片机为核心,通过测量三相电流、零序电流和温湿度信号,实现对电动机的多种故障进行现场监测,并通过串口将监测情况显示在远程计算机上.实践表明,该系统能够进行实时、可靠的现场和远程监测报警.     

基于ARM技术的远程图像监控系统设计

随着图像处理技术在科学技术领域的日益成熟，以及通信带宽的日益提高，应用图像处理技术的远程图像监控系统已逐渐盛行。针对无人值守行业对远程、实时监控的需要，介绍了一种基于ARM技术的远程监控系统，讨论了现场监控器配置图像信息采集模块的软硬件技术，描述了基于TCP／IP协议实现图像信息传输的方式，实现了远程监控中心对现场图像信息的监视。     

基于MQTT协议的物联网岸电监控系统

目前港口岸电系统地域分布较广且供电运行数据无法及时掌握。针对这一问题,设计并开发一种基于MQTT协议的物联网岸电监控系统,利用前端数据采集装置对供电系统的供电运行参数、用户信息、电力信息、设备状态等数据进行实时采集,经过数据处理和封装打包后,采用移动4G模块将封装好的数据通过MQTT协议上传至云端服务器,数据传输采用MD5数据加密算法,实现前端数据采集设备和监控系统之间的可靠数据通信,实时监控岸电系统运行状态,同时利用手机App对岸电系统参数进行实时监控与参数修改,增强物联网岸电监控系统的灵活性和便捷性。     

高可靠多功能电量监控器的研制

针对城市雨水泵站对水泵电机监控的需求,设计了泵站测控系统中高可靠、多功能的电量监控器。该监控器采用STM32微控制器作为整个系统的控制核心,应用高精度电能计量芯片CS5484,实现水泵电机电参数状态监测,同时具有电机的启停控制等功能。着重介绍了监控器电源管理、电参数测量、数字量检测与控制、通信模块等电路的设计,给出了系统软件设计方案。系统测试结果表明,该系统电参数测量精度高,通信可靠,功能正常。     

基于Ajax和SVG的Web远程实时监控系统

以ASP.NET为平台,使用Ajax和SVG实时显示技术完成了基于Web的B/S模式远程监控,实现了跨操作平台的网站式远程实时监控系统,将实时监测与控制系统构筑于Internet之上,通过Internet实现对现场设备的实时远程监控、设备故障诊断与调试。设计的前端设备远程监控器可实时监控现场设备的工况,方便组网实现多监控点的实时监控,易于扩展。应用结果表明,该系统有良好的实时性、可靠性、交互性和扩展性。     

水下视频监控系统的设计与搭建

针对浅水测试场在测试时需要对水下设备、潜水员等工作画面进行实时监控、存储的问题,设计了一套水下视频监控系统。为扩大监控范围、提高监控系统的灵活性,系统在硬件设备搭建时采用了浮动式水下监控设备与固定式水下监控设备相结合的监控方式。其中视频采集系统使用VC++进行搭建,控制系统下位机部分使用西门子PLC搭建,并使用Win CC软件组态编写上位机界面。在测试过程中,系统能够清晰、连续地对水下测试画面进行监控及存储,控制系统运行稳定,操作简便。     

深入剖析安氏RealSecure实时入侵监控器

实时入侵监控器 RealSecure是一个计算机网络和主机上的强大的、自动的、实时入侵保护系统。 RealSecure?将基于网络的、基于主机的和基于协议堆栈的入侵检测技术、分布式技术和可生存技术完美地结合起来,提供实时的安全监控。 RealSecure?监控网络传输和系统事件,并自动检测和响应可疑的行为,使用户在系统受到危害之前截取并阻止非法入侵和内部网络误用,从而最大程度地降低安全风险,保护企业网络的系统安全。 　　实时入侵监控器 RealSecure的组成部件： 　　检测监控部件 　　NetworkSensor　　ServerSensor　　OSSensor　　管…     

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。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

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.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.     

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.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

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。     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.