共查询到20条相似文献,搜索用时 62 毫秒
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iFIX在城市供水SCADA系统的应用 总被引:3,自引:0,他引:3
以城市供水SCADA系统为背景,介绍了iFIX的具体应用。介绍了SCADA系统的总体结构和系统定义,还有iFIX在该系统的具体应用和实现的功能。 相似文献
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基于OPC及工业以太网的iFIX与PLC的通信 总被引:3,自引:1,他引:2
结合组态软件与可编程逻辑器件(PLC)之间的通信实例,介绍了基于工业以太网及OPC技术的iFIX与PLC的通信原理及实现过程,以及相关技术的概念及特点.OPC全称是对象的链接和嵌入技术(OLE)for Process Control,该系统以KEPSe-rverEx作为OPC服务器,在西门子S7-300系列PLC与iFIX软件(OPC客户端)之间建立通信.工业以太网及OPC技术的应用,提高了通信的速度及系统的扩展性.实际运行表明,基于工业以太网及OPC技术的iFIX与PLC之间通信的稳定性. 相似文献
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iFIX组态软件可以与多种PLC设备进行通讯,通过描述实际项目中的应用经验,详细介绍了iFIX与AB PLC之间的通讯设置. 相似文献
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iFIX在化工生产监控系统中的应用 总被引:2,自引:2,他引:0
以某化工生产为背景,研究并开发了一套基于分布式控制,iFIX组态软件和OPC技术的生产过程控制系统.针对该监控系统要求多功能,高可靠性的特点,采用了基于iFIX中VBA的面向对象编程技术构建了上位机SCADA系统(即数据监控和采集系统),实现了对化合物生产过程数据实时显示、采集、处理、超限报警、报表打印、安全管理以及对现场设备的控制等功能. 相似文献
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This article describes the rationale for the multiphase creative problem solving process, and reports the findings from an empirical investigation conducted to facilitate the problem solving of managers. The ideational skills of the managers were assessed before and after training in a complete process of creative problem solving, along with their ideational attitudes, creative problem solving style (i.e., generator, conceptualizer, optimizer, or implementor), and evaluative skill (i.e., ability to recognize original ideas). The most important findings indicated that the training had a significant impact on the evaluative accuracy of the managers. They were significantly more accurate in their judgments about original ideas after training, both in their identification of original ideas and their recognition of unoriginal ideas. After training, the managers also gave more solutions and more original solutions to problems. Finally, several variables (e.g., the “preference for active divergence” attitude, and the conceptualizer process style) seemed to moderate the impact of training. Training was therefore effective, with specific effects that can be predicted from pre-training individual differences in attitudes and process style. 相似文献
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为发现我国国家标准与国外发达国家标准法规的差距,从根本上提高我国国家标准的总体质量,提升我国产品的质量安全水平,以关键指标(因子)为核心,研究国内外标准法规比对的工作流程,利用面向对象的方法设计,实现了国内外标准法规比对分析系统。该系统适用于所有产品国内外标准法规的比对工作。 相似文献
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为提高高等院校的管理水平和决策水平,充分利用校园网资 源,开发了高等院校行政财政分析与决策系统。解决了诸如数据的动态查询、自动生成报表 、网络环境下数据共享等技术问题,具有网上数据共享、图形界面友好和安全的保密措施等 特点。 相似文献
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Mark A. Reynolds 《Nexus Network Journal》2001,3(2):147-150
Geometer Marcus the Marinite explores how the geometric and harmonic means can be employed compositionally within a frame;
how means function in the development of organizational field grids; how means work to develop linear perspective and proportional
grids. 相似文献
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网络环境下的计算机病毒及其防范技术 总被引:1,自引:0,他引:1
网络环境下的计算机病毒,给计算机网络的安全运行造成了巨大的威胁.因此,探讨和研究网络环境中计算机病毒的新特点和防范技术,对于计算机和网络信息安全有着非常重要的意义. 相似文献
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Goldman DB 《IEEE transactions on pattern analysis and machine intelligence》2010,32(12):2276-2288
We discuss calibration and removal of "vignetting" (radial falloff) and exposure (gain) variations from sequences of images. Even when the response curve is known, spatially varying ambiguities prevent us from recovering the vignetting, exposure, and scene radiances uniquely. However, the vignetting and exposure variations can nonetheless be removed from the images without resolving these ambiguities or the previously known scale and gamma ambiguities. Applications include panoramic image mosaics, photometry for material reconstruction, image-based rendering, and preprocessing for correlation-based vision algorithms. 相似文献
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