【作者】 迟铁；

【导师】 马斌；

【作者基本信息】 沈阳建筑大学 ， 控制理论与控制工程， 2011， 硕士

【摘要】 随着网络和信息技术的发展,人们对建筑环境质量的要求也越来越高,网络中的传输数据量也随之增大,出现了网络传输中信息传输冲突和敏感数据传输等问题,因此需要提高网络通信系统的数据传输的可靠性、有效性和实时性。目前通信硬件的处理能力已经大大提高,所以要解决网络传输中存在的问题,必须提高通信软件的处理能力以与硬件能力相匹配。本课题以多Agent技术和无线网络技术为支持,结合现代建筑环境的特点,对基于Agent的无线网络系统进行软硬件开发、网络体系设计、智能算法、通信协议进行了研究,取得了重要的理论与应用成果。本文研究的主要内容包括以下几个方面:(1)研究Agent与多Agent的理论、特性及技术特点,研究无线网络技术发展情况,以无线网络为依托,研究设计基于Agent的无线网络,并将其应用在建筑环境当中。(2)结合建筑环境的特点,设计系统硬件结构和功能结构,并说明了系统硬件模块选型的理由以及系统功能介绍,通过两者相结合,实现了系统的模块化设计,可以有效地提高系统数据传输的准确度,降低了系统的构建难度。(3)根据实际传输要求,采用nRF905无线模块构建无线数据传输系统,实验结果表明,室内通信距离可达100米,室外通信距离可达500米,满足系统实际要求。(4)研究设计系统硬件电路及软件实现,根据建筑环境的具体情况,设计无线网络拓扑结构,制定通信协议,保证数据传输的可靠性。(5)在硬件平台和无线数据传输程序设计基础上将Agent嵌入到系统的每个节点中去,设计基于多Agent的无线抄表系统模型,设计网络拓扑结构,采用黑板结构通信并制定通信协议。基于Agent的智能性、自主性和协调性的特点,采用递推算法和最小二乘法作为系统的智能算法,对系统中的数据进行判错和纠错,对于系统的可疑数据,根据协调机制采用最小二乘法进行数据拟合,得出合理数据。(6)针对系统中所采集到的数据,设计上位机的管理系统。分析软件设计需求,明确设计任务。以ADO技术为核心,利用该技术访问数据库,实现了对接入层住户信息和住户表具数据的综合管理。具体包括对表具数据的采集、查询、统计、输出,接入层新住户的注册,住户迁移时信息删除及住户信息的查询等功能。最后,对全文所作的工作进行了总结,并对下一步研究工作进行了展望。更多还原

【Abstract】 With the development of network and information technology, the quality of the architecture environment which people demand is more and more, the amount of data transmission in network are also increased, and there have been some problems such as information transmission conflicts and sensitive data transmission, so we need to increase the reliability, validity and real-time of data transmission in the network communication system. The processing power of current communications hardware has been greatly improved, if we want to solve the problems in network transmission, we must improve the processing capabilities of communication software in order to match the hardware capabilities. This research has used multi-Agent technology and wireless network technology as support, combined with the characteristics of the modern built environment, researched the hardware and software development, network system design, intelligent algorithms and communication protocols of the wireless network system based Agent, and we have achieved important theory and application of the results.This paper included the main contents as follow:(1) We researched the theory, characteristics, technical features of Agent and multi-Agent, and also research the development of wireless network technology. Then we designed the wireless network based Agent and applied it in the built environment.(2) Combined with the characteristics of the built environment, we designed the hardware structure and function structure of the system. We have explained the reasons for selecting the hardware modules and described the system functions. By a combination of both, we achieved the system’s modular design, which can effectively improve the accuracy of data transmission in system and reduce the difficulty of building the system.(3) Due to the actual transmission requirements, then use nRF905 wireless modules to build the wireless data transmission system. As the experimental results show that the communication distance is up to 100m indoor and 500m outdoor, which can meet the demand of the project.(4) Researched and designed hardware circuits and software, according to the specific circumstances of the building environment, designed the wireless network topology and communication protocol to ensure the reliability of data transmission.(5) Based on the hardware platform and wireless data transmission program, we embedded the Agent into the each node in the system, designed the model of wireless meter reading system based on multi-Agent. We designed the network topology, used the blackboard structure to communicate, and constituted the communication protocols. Due to the characteristics such as intelligence, autonomy and coordination of the Agent, we used the recursive algorithm and least square method as the intelligent algorithms, aimed at correcting the error data in the system. Contraposed the suspicious data, we used least squares method to fit the data by according the coordination mechanism, then obtained the reasonable data.(6) We designed management system for the collected data in the system. We analysisd software design requirements and nailed down the design tasks. We used ADO technology to access the database and realized the integrated management of households’information and meter data. Specifically including some functions such as the data collection, query, statistics, export, and the registration of new households, deletion and query of households’information.In the end, we made a conclusion for this thesis and pointed out the future research.更多还原