共查询到20条相似文献,搜索用时 58 毫秒
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本文通过分析泵站综合自动化系统的功能要求和目前国内泵站综合自动化系统中存在的缺点,提出了一种泵站综合自动化系统结构。这种结构中引入现场控制器,所有现场控制器采用嵌入式技术,基于统一的硬件平台,嵌入不同的控制软件,满足泵站不同的现场要求。 相似文献
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作者介绍了日本松下电工的FP10SH可编程控制器在浙江盐官泵站综合自动化系统中的开发应用,并且详细阐述了排涝泵站综合自动化系统的系统构成、具体功能实现和PLC程序流程图。 相似文献
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作者介绍了日本松下电工的FPIOSH可编程控制器在浙江盐官泵站综合自动化系统中的开发应用.并且详细阐述了排涝泵站综合自动化系统的系统构成、具体功能实现和PLC程序流程图。 相似文献
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泵站群在跨流域调水过程中发挥着重要的作用,对其进行有效控制是保障调水工程顺利进行的必要条件。为了克服传统控制方法的不足,本文提出了一种泵站群网络化控制系统的系统设计模式。着重分析了泵站群网络化控制系统的结构特点和功能特点,并指出了一些网络化控制系统本身所面临的新问题。利用网络化控制系统可以有效地提高泵站群监控系统的自动化水平,加强泵站之间实时的协调,促进水资源的综合调度。 相似文献
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高翔 《网络安全技术与应用》2014,(6):34-34,36
针对国内排水泵站监控系统的现状,提出了一种新的基于虚拟仪器的排水泵站远程监控系统的设计方案。根据目前自动化监控管理发展情况,可以肯定的是实现排水泵站自动化监控管理,泵站监控系统必须与目前飞速发展的计算机技术紧密结合充分利用计算机资源。 相似文献
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城市饮水及排涝作为城市建设的重要内容,在城市化建设进程不断加快的形势下对其自动化控制提出更高的要求。泵站是实现城市饮水机排涝的重要场所,由大型水泵、电机及油箱等构成,需通过综合自动化控制系统合理配置、协调、控制各组件,提高泵站运行效率。本文就此主要分析综合自动化控制系统在泵站应用中的特点及功能。 相似文献
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PLC具有独特的特点,在泵站自动化控制系统中得到了广泛的应用,它同时可以检测和处理控制系统的数据,实现对现场自动化设备的控制。本文简要介绍PLC,以及PLC在泵站自动控制系统中的运用,同时,介绍了PLC的硬件及软件的一些特点,及监控软件所实现的功能。在运用中可以看出PLC在泵站自动控制系统中的应用效果较好,可靠性较高,效率也较高。 相似文献
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S. Shaw 《Journal of Computer Assisted Learning》1993,9(2):93-99
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. 相似文献
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European Community policy and the market 总被引:1,自引:0,他引:1
C. Lloyd 《Journal of Computer Assisted Learning》1993,9(2):86-91
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. 相似文献
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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。 相似文献
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Wayne O’Brien Author Vitae 《Journal of Systems and Software》2008,81(11):1997-2013
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. 相似文献
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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. 相似文献
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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 相似文献
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张涛 《计算机测量与控制》2015,23(1):86-89
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. 相似文献
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David Poole 《Computational Intelligence》1989,5(2):97-110
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. 相似文献
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Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China. 相似文献
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Watts S. Humphrey 《Annals of Software Engineering》2002,14(1-4):39-72
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. 相似文献