RFID（Radio Frequency IDentification）技术是一种非接触、通过射频信号自动识别对象并获取相关数据的通信技术。RFID技术为货物的跟踪、管理及监控提供了快捷、准确、自动化的技术手段,目前在仓储、配送等物流环节有许多成功应用。因其抗恶劣环境能力强、非接触识别等特点，RFID技术在生产过程控制中也有许多应用。随着RFID技术的深入发展，其应用领域正逐步从传统的物流供应链向生产制造、交通控制管理等其他领域不断扩展，这给当前主流的RFID信息管理技术带来了挑战。

由于实际RFID标签动态信息应用系统的客观需求，需要存储大量时空状态信息快速更新的RFID标签动态信息，这些信息需要满足实时数据管理要求，这给RFID标签动态信息应用系统带来海量RFID标签动态信息的存储管理和查询问题。

本文以RFID技术和实时数据管理技术为研究背景，根据RFID标签动态信息应用系统中RFID标签动态信息的数据特征和应用特性，结合关键技术问题的研究成果，提出了基于主内存的RFID标签动态信息管理技术方案。

论文的主要工作包括：

1、建立RFID时空数据模型，提出时空语义分析方法。

RFID标签动态信息特有的数据特征使得现有的数据处理模型不适用于RFID应用。本文提出了RFID时空数据模型，同时将其分离为RFID时间模型、RFID事件模型和RFID空间模型，并构建相应模型的架构和可复用框架。同时，提出了基于动态实体-关系的数据定义方法，通用地定义了RFID时空数据。为了满足时空语义一致性，在RFID应用的数据模型中引入语义网络（Semantic Web）表达，通过RDF（subject，property，object）三元组的语法形式给出属性关系、时间关系、空间关系和时空关系的表达方式。

2、RFID标签动态信息的数据组织和管理技术研究。

针对RFID标签动态信息的数据特征和应用特性，采取基于主内存的方式，对RFID标签动态信息进行分类存储管理，同时，建立有效的查询索引机制提高对数据的更新访问性能。为了提高数据交换性能和线程间的并发度，提出了一种实时快速的线程间数据交换方法。

3、设计并实现基于主内存的RFID标签动态信息管理模块的系统原型。

通过对上述关键技术问题的研究，结合实际的对象追踪应用，设计并实现了RFID标签动态信息实时管理软件系统中基于主内存的RFID标签动态信息管理模块。通过对演示系统进行性能测试验证了基于主内存的RFID标签动态信息管理技术方案的可行性。

RFID (Radio Frequency Identification) is a kind of non-contact communication technology which accesses relevant data by automatically identifying objects through RF signal. RFID technology provides fast and accurate technical solution for tracking, managing and monitoring objects. At present, there are many successful applications in warehousing, delivering and other logistics chain. Because of the traits of resistance to adverse environment and non-contact identification, RFID technology is also used in production processing control. With the further development of RFID technology, its application field is gradually expanding from traditional logistics supply chain to other areas such as manufacturing, traffic control and management etc, which brings great challenge to current mainstream RFID management technology.

Due to the objective requirements of RFID tags’dynamic information application systems, massive RFID spatial and temporal information which is quickly updated needs to be stored. At the same time, the information should meet the real-time data management demand which brings storage management and query problems of massive RFID tags’ dynamic information in RFID application systems.

The paper focus on RFID technology and real-time data management technology, proposing RFID tags’ dynamic information management technical solution based on the main memory. This solution was proposed on the basis of the data characteristics and application features of RFID tags’ dynamic information in RFID application systems, combined with the research of key technical issues.

The main contributions of this paper are as follows:

1. Establised RFID spatial-temporal data model and proposed a spatial-temporal semantic analysis method.

The unique data characteristics of RFID tags’ dynamic information makes the current data processing model do not apply to RFID applications. In this paper, a RFID spatial-temporal data model was proposed and was split to RFID time model, RFID event model and RFID spatial model. At the same time, in order to give the general definition of RFID spatial-temporal data, a data definition method based on dynamic entity-relationship was proposed. The semantic web expression was introduced to the data model of RFID applications for spatial-temporal semantic consistency. The grammatical form of RDF (subject, property, and object) triple defines the expressions of property relations, time relations, spatial relations and spatial-temporal relations.

2. Studied the data organization and management technique of RFID tags’ dynamic information.

According to the data characteristics and application features of RFID tags’ dynamic information，this paper adopts the main memory-based approach to classify RFID tags’ dynamic information and respectively store and manage. At the same time, an effective index was established to improve the update and access performance of data. In order to improve the performance of data exchange and the concurrency between threads, a real-time fast data exchange method between threads was proposed in this paper.

3. Designed and implemented the system prototype of the main memory-based RFID tags’ dynamic information management module.

Through the research of above-mentioned key technical issues combined with actual object tracking-oriented RFID applications, we designed and implemented the main memory-based RFID tags’ dynamic information management module of RFID tags’ dynamic information real-time management software system. The performance testing of the demonstration system verified the feasibility of the main memory-based RFID tags’ dynamic information management technical solution.