基于以太网的实时发布者/订阅者模型研究与实现  

Research on the Real-Time Publisher/Subscriber Model Based on Ethernet and Its Implementation

作　　者：孙军平[1] 盛万兴[2] 王孙安[1] 

机构地区：[1]西安交通大学机械工程学院,西安710049 [2]电力科学研究院

出　　处：《西安交通大学学报》2002年第12期1299-1302,共4页Journal of Xi'an Jiaotong University

基　　金：国家“九七三”重点基础研究专项经费资助项目(G1998030405).

摘　　要：通过分析分布式网络控制系统通信的特点,在研究发布者/订阅者(Publisher/Subscriber)模型的基础上引入了控制参数和附加服务,以形成改进型嵌入式实时Publisher/Subscriber模型,这使得Subscribr具有主动询问、Publisher具有响应询问的功能,满足了工业控制实时性和可靠性的要求.用给出的实时Publisher/Subscriber模型研究了分布式网络控制系统中设备间异步、点对多点实时通信的方案,讨论了模型设计和执行原理,设计了基于32位嵌入式微处理器的实验模型.测试结果表明,该模型满足变电站自动化系统中点对多点实时通信的要求.After researching the communication characteristics of distributed network control system and publisher/subscriber model, an embedded realtime publisher/subscriber(ERTPS) model is presented by introducing control parameters and additional services. Through this model,subscriber can actively inquire about dataset, and the publisher will response the inquiry in order to meet the requirement of realtime and reliability in industrial control. A scheme for asynchronous, pointmultipoint communication between devices is provided, and the model structure and design principle are discussed. A experimental model is designed based on the embedded microcontroller with 32 bits. The test results indicate that the model satisfies the requirement of realtime communication in substation automation, and provides useful information for solving the similar problems in industrial automation.

关 键 词：实时发布者/订阅者模型 变电站自动化 以太网 分布式控制 多点实时通信 现场总线 

分 类 号：TM764.2[电气工程—电力系统及自动化] TP39[自动化与计算机技术—计算机应用技术]