Advant OCS 系统改造实施方法探讨

以某电厂监控系统为原型,探讨德国 ABB Advant OCS 监控系统在大中型水电站中的改造方法,本文阐述的改造方法将最大程度地降低改造对电站日常运行生产的影响,并分析了南京南瑞集团公司的 SSJ 3000型计算机监控系统在此类改造案例中的可行性。     

Technology…The enabler for tomorrow's agile enterprise

How many of you can retrieve what you need when you need it? Do you have ready access to critical real-time production information? How about historical information? Financial information? What about quality information? The information probably exists in many forms and at various locations throughout your organization - just not where and when you need it.

A Manufacturing Execution System (MES) can be viewed as the glue that binds your business planning systems with your real-time process control systems (Fig. 1). An MES manages manufacturing and production operations according to your changing business plan and provides critical information feedback to facilitate the planning process. Key to understanding the requirement for information flow is understanding the relationships which exist between Business Planning Systems, MES and Control Systems. The functions often associated with MES are batch management, operations management, equipment management, materials management and quality and safety management. In today's rapidly changing and highly competitive business environment, the need to quickly adapt and respond to market opportunities while controlling manufacturing costs is critical to survival. As we adapt a high demand will be placed on the integration of planning, execution and control systems.

This paper reviews the Distributed Control Systems (DCS) of the past and present, identifies changing business practices and new technology that will define the next generation of Open Control Systems (OCS), and provides insight into the choices you can make today that model your MES solution for tomorrow.     

OCS在线计费系统解决方案分析

随着电信业务的发展和电信重组的完成,电信行业竞争更加激烈,促使电信运营商需要提高其核心的计费支撑能力,电信计费系统向着实时化、灵活化、融合化的方向发展。本文主要阐述了建设OCS系统的必要性、OCS系统的技术架构以及OCS系统需要实现的业务功能等。     

Can communications and sensors work together in one network?

With the development of both optical fiber-based communication and sensation, one interesting topic has been pointed out. How to connect those mountains of sensors to detect the signal in a large area, and how to make the cost of sensing system lower enough should be studied. A network of sensors is a good option. All sensing equipments, including the interrogators and the sensors, will be internetworking together. However, fiber optic communication networks have been developed very well over the past two decades. Is it necessary to rebuild a new network for sensors? In this paper, some new technologies in the two areas of fiber optic sensors and fiber optic communication will be addressed. Then, the available overlay architecture of a fiber optic sensors network will be presented. Finally, a polymorphous optical burst switching (POBS)-based architecture will be proposed, which can support all kinds of services, including digital data optical circuit/burst/packet switching and analog fiber optic sensor signal circuit/burst switching, etc.     

接触网移动巡检子系统的设计

为了保证铁路运行的安全,解决接触网户外巡检工作监管困难、信息化程度不高、工作效率偏低等问题,提出了利用GPS、GIS技术和嵌入式开发技术,与接触网人工户外巡检业务相结合,开发一套移动巡检子系统和巡检管理子系统相结合的接触网户外巡检管理系统的思想。移动巡检子系统采集户外巡检故障信息和巡检线路上支柱的GPS信息,通过与巡检管理子系统间的数据通信,将采集的信息提交后台服务器上。阐述了移动巡检设备的开发思路,并对接触网移动巡检子系统的功能设计进行了详细的说明,通过将GPS定位技术、移动GIS技术和户外巡检工作相结合,实现对接触网户外巡检的科学化、规范化、信息化管理。     

三峡左岸电站计算机监控系统及其网关工作站

对三峡左岸电站计算机监控系统的系统结构、设备配置及网络结构等方面作了比较详细的介绍，三峡左岸电站计算机监控系统设计是基于ADVANTOCS(Open Control System)技术，ADVANTOCS是一种开放、分布式的综合自动化过程控制系统，中国水利水电科学研究院自动化所参加了系统网关工作站的联合开发，本文最后对网关工作站部分也作了相应的介绍。     

基于CC-Link总线的接触网隔离开关远程监控系统

随着铁路电气化的大力发展,电力机车、动车组大量应用,对机务段接触网隔离开关实行集中联锁监控管理显得尤为重要.利用CC-Link总线技术开发隔离开关监控系统,实现了现场到调度管理的远程监控,以及把故障时的运行规定,各站信息写入到存储器相应地址中,通过软元件与地址的准确映射来杜绝接触网隔离开关的误操作.该系统结构简单、可扩展性强,具有较高的可靠性.     

Advant OCS控制系统过程数据采集的实现

工厂信息网(Intranet)和因特网(Internet)的应用，使分散型控制系统的集中管理功能有了用武之地。通过介绍Advant OCS控制系统的数据库结构，实现过程数据的采集，最终形成信息管理和生产控制一体化的现代综合控制系统。     

OCS XL10e控制器在CO偶联合成草酸酯中试中的应用

介绍了以OCS XL10e控制器为控制核心,通过变送器和调节阀组合构成的高效、可靠、先进的控制系统,该系统利用OCS XL10e控制器实现对调节阀的控制,利用触摸屏画面对工艺流程进行数据采集以及实时监控,使该装置具有先进的自动化水平和生产效率高等特点。此外,现场运行表明,该系统人机界面合理友好的设计能充分发挥系统的功能。     

ROF系统中基于SOA非线性效应的光子上变频技术研究

在光载射频（ROF）系统中,为了将承载信息的光基带信号上变频到微波／毫米波波段,本文基于半导体光放大器（SOA）中的交叉增益调制（xGM）和交叉相位调制（XPM）效应实现了光子上变频：即实现了1．25Gb／s基带信号到30GHz的毫米波信号的转换。文中分析了SOA驱动电流的变化（50～200mA）和信号光与本振光波长间...