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基于Modbus/TCP工业以太网的自动化控制系统 被引量:8
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作者 关学进 刘娟 《电子测试》 2011年第4期4-8,共5页
本文在对Modbus/TCP工业以太网技术深入研究的基础上,设计了一种基于Modbus/TCP协议的三层体系结构的工业控制系统,重点阐述了控制系统三层结构中过程管理层的控制组态、数据管理和数据通讯等各功能模块的设计,最后,以重庆某公司的锅炉... 本文在对Modbus/TCP工业以太网技术深入研究的基础上,设计了一种基于Modbus/TCP协议的三层体系结构的工业控制系统,重点阐述了控制系统三层结构中过程管理层的控制组态、数据管理和数据通讯等各功能模块的设计,最后,以重庆某公司的锅炉汽包水位控制系统为例搭建平台进行验证,验证结果表明,本控制系统各项功能稳定可靠,能够满足控制系统性能设计要求。本文为工业控制系统直接应用于工业控制现场提供了一套可行的设计方案。 展开更多
关键词 MODBUS/TCP 工业以太网 过程管理层 组态
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A Key Management Scheme Based on Hypergraph for Fog Computing
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作者 Zhi Li Yanzhu Liu +3 位作者 Di Liu Chunyang Li Wei Cui Guanglin Hu 《China Communications》 SCIE CSCD 2018年第11期158-170,共13页
Fog computing is a new paradigm supporting the stringent requirements of mobility applications by bridging cloud computing and smart devices. Since the smart devices may be deployed in dynamic areas where are out of s... Fog computing is a new paradigm supporting the stringent requirements of mobility applications by bridging cloud computing and smart devices. Since the smart devices may be deployed in dynamic areas where are out of strict monitoring and protection, fog computing requires security protections to ensure confidentiality and integrity. In this article, to deal with security requirements and considering the distinctive features, a key management based on hypergraph schemed is designed. Firstly, based on the key hypergraph, the three hierarchy architecture of fog computing is divided into two subnetworks. Furthermore, each key management process of both two subnetworks is designed to satisfy the operational and security requirements of fog computing. Finally, the performance evaluation and numerical simulation have been provided to validate the proposed scheme. 展开更多
关键词 fog computing fog security keymanagement HYPERGRAPH
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