如何均衡使用网络节点能量并生成高可靠路由是WirelessHART网络研究的一个难题,为此提出了一种GRAEB(graph routing algorithm based on energy balancing)图路由算法。首先,网络被初始化为连通的图结构,能够提高丰富的冗余路径。网络...如何均衡使用网络节点能量并生成高可靠路由是WirelessHART网络研究的一个难题,为此提出了一种GRAEB(graph routing algorithm based on energy balancing)图路由算法。首先,网络被初始化为连通的图结构,能够提高丰富的冗余路径。网络管理器根据全网节点剩余能量、通信周期、链路分布等因子生成节点鲁棒系数矩阵,节点通过比较邻居的鲁棒系数来选择最优路径。另外,规定了邻居节点数的上限阈值,每次路由更新只保留鲁棒系数最优的邻居。仿真结果表明GRAEB不仅提高了网络可靠性,而且延长了网络寿命。展开更多
WirelessHART符合IEC62591国际标准,它采用了Mesh网状技术,这一技术不需要布线等配套基础设施,创建了成本效益良好的自动化替代方案.艾默生过程管理公司制定了IEC62591WirelessHART?系统工程指南,介绍了工程项目执行生命周期五个阶段:Ap...WirelessHART符合IEC62591国际标准,它采用了Mesh网状技术,这一技术不需要布线等配套基础设施,创建了成本效益良好的自动化替代方案.艾默生过程管理公司制定了IEC62591WirelessHART?系统工程指南,介绍了工程项目执行生命周期五个阶段:Appraise(评价)、PRE-FEED(预工程设计前端)、FEED(Front End Engineering Design,工程设计前端)、Execute(执行)、Operate(运行)的工程设计要求,这5个阶段大体与国内预可行性研究、可行性研究、初步设计、施工图设计及运行阶段对应.本文重点介绍了与前期工程设计相关的前三个阶段(预可行性研究、可行性研究、初步设计)的WirelessHART无线网络工程设计.展开更多
WirelessHART,as a robust and reliable wireless protocol,has been widely-used in industrial wireless sensoractuator networks.Its real-time performance has been extensively studied,but limited to the single criticality ...WirelessHART,as a robust and reliable wireless protocol,has been widely-used in industrial wireless sensoractuator networks.Its real-time performance has been extensively studied,but limited to the single criticality case.Many advanced applications have mixed-criticality communications,where different data flows come with different levels of importance or criticality.Hence,in this paper,we study the real-time mixedcriticality communication using WirelessHART protocol,and propose an end-to-end delay analysis approach based on fixed priority scheduling.To the best of our knowledge,this is the first work that introduces the concept of mixed-criticality into wireless sensor-actuator networks.Evaluation results show the effectiveness and efficacy of our approach.展开更多
文摘如何均衡使用网络节点能量并生成高可靠路由是WirelessHART网络研究的一个难题,为此提出了一种GRAEB(graph routing algorithm based on energy balancing)图路由算法。首先,网络被初始化为连通的图结构,能够提高丰富的冗余路径。网络管理器根据全网节点剩余能量、通信周期、链路分布等因子生成节点鲁棒系数矩阵,节点通过比较邻居的鲁棒系数来选择最优路径。另外,规定了邻居节点数的上限阈值,每次路由更新只保留鲁棒系数最优的邻居。仿真结果表明GRAEB不仅提高了网络可靠性,而且延长了网络寿命。
文摘WirelessHART符合IEC62591国际标准,它采用了Mesh网状技术,这一技术不需要布线等配套基础设施,创建了成本效益良好的自动化替代方案.艾默生过程管理公司制定了IEC62591WirelessHART?系统工程指南,介绍了工程项目执行生命周期五个阶段:Appraise(评价)、PRE-FEED(预工程设计前端)、FEED(Front End Engineering Design,工程设计前端)、Execute(执行)、Operate(运行)的工程设计要求,这5个阶段大体与国内预可行性研究、可行性研究、初步设计、施工图设计及运行阶段对应.本文重点介绍了与前期工程设计相关的前三个阶段(预可行性研究、可行性研究、初步设计)的WirelessHART无线网络工程设计.
基金supported by the"Strategic Priority Research Program"of the Chinese Academy of Sciences(XDA06020500)
文摘WirelessHART,as a robust and reliable wireless protocol,has been widely-used in industrial wireless sensoractuator networks.Its real-time performance has been extensively studied,but limited to the single criticality case.Many advanced applications have mixed-criticality communications,where different data flows come with different levels of importance or criticality.Hence,in this paper,we study the real-time mixedcriticality communication using WirelessHART protocol,and propose an end-to-end delay analysis approach based on fixed priority scheduling.To the best of our knowledge,this is the first work that introduces the concept of mixed-criticality into wireless sensor-actuator networks.Evaluation results show the effectiveness and efficacy of our approach.
