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. 相似文献
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. 相似文献
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。 相似文献