无线网络传感器数据管理关键技术研究

【作者】 韩树人；

【导师】 何鹏举；

【作者基本信息】 江西理工大学 ， 控制理论与控制工程， 2008， 硕士

【摘要】 网络传感器的数据管理是网络化控制系统中的一个研究热点，也是一个难点。传感器作为控制系统中的一个部件，与控制器及执行器一样，都是控制网络中的一个独立节点，负责实时采集被控对象的输出数据，并按系统的要求处理和传输这些数据，所以如何有效、实时的管理和传输数据就显得非常的重要。为了使网络传感器节点的数据管理能符合实际工程的需要，本文在已构建的网络传感器硬件平台上，研究了网络传感器的硬件和软件的体系结构，在实时操作系统的支撑下，以网络传感器数据管理系统TinyDB为基础，研究了网络传感器数据库的查询优化理论，得出了实现网络传感器数据管理的方法和优化技术。具体研究内容如下：1、在研究传统数据库和传感器网络数据库系统各自的特性、实现技术和相关理论的基础上，得出了传感器网络的体系结构、数据的存储方法和数据库的结构模型；2、结合模型，设计了一数据库查询系统。主要包括数据库客户端和传感器节点端两大部分。客户端负责用户查询的发送、解析、表示、接收以及与网络间查询的执行。传感器节点负责网络查询的处理、节点目录和模式的管理、存储器管理和网络拓扑管理四个方面；3、从查询语言、查询处理优化、聚集操作与优化方面研究了无线传感器网络数据库的优化问题，并对无线网络控制系统进行了节能仿真，得出了节能优化策略。本文研究的网络传感器数据管理技术，实验和仿真结果表明是可行的，它为传感器网络节点数据管理的工程化提供了理论依据和实现技术。更多还原

【Abstract】 In networked control system,the data management of networked sensor is commonly acknowledged as a focus and a difficulty. Sensor as a part of control system is a network node as controller and actuator, which takes charge of the collection and disposes of the plant’s real-time data and transmites the real-time data based on system’s request. So it is very important to how to manage and transmit the real-time data efficiently.For sensor node’s data manage satisfying the practice engineering’s needs, in the paper, the architecture of the system’s hardware and software have been researched, which is based on the built hardware platform. Supported by real-time operating system and based on the network sensor data manage system–TinyDB, the query optimization theory about network sensor database is researched and the method and optimization technology of realizing network manage are also obtained. Detailed content as follows:1、The character, the realized technology and the correlative theory were researched about traditional DB and sensor data manage system, and the architecture of sensor network , the data’s storage means and the DB’s frame model were got;2、The DB’s query system is designed. It included a couple of client-end and sensor node-end. The client-end took charge of query’s receiving, query’s parsing, query’s express, query’s sending and the process of query. The sensor node-end took charge of four parts of query process, the catalog and mode management of sensor node, memorizer management and network topology;3、The wireless sensor network’s optimization problems were researched from query language, query process’s optimization and aggregate handle’s optimization. The saving energy simulation was researched for wireless network control system, which gave the saving energy strategy.In the paper, the network sensor data manage technology was researched. The testing and simulation showed that the researched system was feasible, and that provided the theory gist and the realized technology for the engineering of the sensor network node’s data manage.更多还原