【作者】 张登攀；

【导师】 何岭松；

【作者基本信息】 华中科技大学 ， 机械电子工程， 2007， 博士

【摘要】 网格化测量是工业生产和科研领域中测量支撑体系的研究方向和发展趋势,不但可以实现虚拟仪器技术、网络测量技术、通信技术、信号处理技术及人工智能技术等的融合,而且可以实现测量资源在网格环境下的即插即用、动态互联、透明访问和全面共享。但是,测量资源的动态、自治、异构和分布的特点给网格化测量带来挑战。本文从理论和实践的结合上对网格化测量中的若干问题进行研究,其主要研究工作及贡献体现在以下几个方面:第一,针对网络化测量中,测量关系相对固定,灵活性差的问题,从测量资源管理和网格化测量系统动态重构两个方面,提出了网格化测量动态可重构系统结构模型,可实现网格环境下测量资源的自由添加和网格化测量中资源自由组合。第二,针对网格化环境中测量资源的动态互联问题,提出了一种全局统一的网格化测量资源描述规范,结合网格化测量资源空间模型,从设备、数据和诊断处理三个角度进行测量资源聚类划分,研究了基于测量资源描述规范的各类测量资源信息描述和信息化表达问题,满足了测量资源信息化、透明化和共享化的要求。第三,针对网格技术应用到测量中存在的通讯协议过于复杂问题,结合网格化测量动态重构要求,提出了一种支持网格化测量动态重构通讯协议体系。从测量资源查询与路由定位协议、发布与更新协议以及测量访问控制协议三个方面进行重点研究,解决了网格化测量系统中,测量资源的查询与路由定位、发布与更新以及网格化测量动态重构等核心通讯问题。第四,针对网格环境下测量资源的查询和定位问题,给出了针对网格化测量系统的查询路由方法,满足了网格化测量重构中组合查询、全局定位以及资源查询中的查准率和查全率要求。第五,针对网格化测量重构中测量资源的动态耦合和协作问题,提出了一种基于偏序关系的网格化测量动态重构服务链模型。研究了该模型中测量资源中间件的封装和通讯方法,解决了测量重构中测量资源的调度和测量资源之间的数据交换问题。在上述研究工作基础上,设计完成了一个网格化测量原型系统,验证了本文所提出的网格环境下可重构测量理论及其相关关键技术的正确性、可行性和有效性。更多还原

【Abstract】 The grid based measurement is the main researching orientation and developing trace of the the measurement supporting system in the domain of industrial measurement and scientific research. The expansion of the grid technology in the measurement domain can not only implement the coupling of the following technologies: Virtual Instrument technologies, network measurement technologies, signal processing technologies and artificial intelligence and the dynamic integration of the measurement resources, but also implement the functions of PNP (plug and play), dynamic interconnection, transparent access and full share of the measurement resources. But the inherent characters such as dynamic, autonomy, heterogeneity and distribution etc, bring the challenges of applying collaboration in the measurement domain. In this dissertation, several dynamic reconfigurable problems of measurement will be studied not only in theory but in practice in the grid based measurement system. The main contents and the contributions are presented as following.First of all, the dynamic reconfigurable system structure model of grid based measurement is proposed based on measurement resource management and dynamic reconfiguration of system according to the conditions of fixing relation and bad flexibility of the current network measurement. In this way, the measurement resource can be added and managed freely in the grid and the the measurement tasks can be carried out by the coordinated measurement resources.Secondly, the dissertation presents the description specification of the measurement resources in terms of the dynamic interconnection of the measurement resources in grids. Based on the division of the grid based measurement resource space, the problems of the description and expressions for all kinds of measurement resources are discussed. In this way, the grid base measurement system can provide full information to implement the transparency and share of the distributed measurement resources.Thirdly, in order to meet with the requirements of the resource registeration and update, resource querying and routing, and resource teleoperation and collaboration, the grid oriented communication protocols are designed in response to the complexity of using current measurement protocols for measurement problems.Fourthly, the query routing methods are proposed in grid based measurement system to solve the problems of query and route of measurement resource in the grids. The test results show that the way can enjoy the needs of clustering query and global location of resources with high recall ratio and precision ratio.Finally, the dynamic reconfigurable service chain model is proposed based on the semi-order relation of the including measurement segments in order to solve the problems of dynamic coupling and collaboration. The methods of encapsulation and communication of the middleware of the service chain are then studied to implement the service scheduling and the data exchange among services.Based on the above achievements, the prototype system of grid based measurement is development which shows that the proposed the theory and key techniques on reconfigubable measurement are right, feasible and effective.更多还原