本科毕业生外文文献翻译.doc

本科毕业生外文文献翻译 学生姓名：李玄彤 指导教师：赵肖宇 所在学院：信息技术学院 专 业：通信工程 中国·大庆 2011 年 5 月 [原文] Industrial Ethernet and Intelligent Building 1 Industrial Ethernet the background 1.1 Unified field bus standards dashed, the temptation remains In 1984 the United States proceed to develop international standards field bus, a few years, the major companies for commercial interests, Field bus standards can not always uniform. Through multiple voting, consultation, in January 2000 announced that the field bus international standards IEC61158 will be eight bus (Prefabs, Interfuse, P-NET, World, etc.) at the same time as international standards (currently has 10 kinds), formed The outcome of a compromise. At the same time, major foreign companies have also launched its own standards, such as LONWORKS, CAN, Japans Mitsubishi, France Schneider, the current number of bus standards at the same time the situation still exists, they say the openness and interoperability only At the same can be achieved under a bus standard, different standards between the bus is still limited. The interconnection between different bus and can not be guaranteed, so people in their efforts to seek a unified standard field bus, some people have proposed the use of TCP / IP protocol Ethernet. 1.2 The demand for system integration （1） industrial automation control integrated enterprise information is Chinas national policy to create automation and information technology as an example: In the need to change the business processes of the same time, management information systems and e-commerce, decentralized network of manufacturers to be integrated, the existing enterprise resource ERP transformed into WEB-based applications. The current single from the automation of industrial automation, factory automation, to the development of automation systems, the underlying message should be integrated into the upper information online in order to achieve the integration of control as shown in