RFID中间件中数据存储管理的关键技术研究

发布时间：2018-03-17 20:04

本文选题：RFID数据缓存　切入点：T链表树　出处：《南京理工大学》2012年硕士论文　论文类型：学位论文

【摘要】：随着RFID应用规模的不断扩大,产生的数据量也爆炸式的增长,如何有效地管理这些海量的数据成为RFID技术研究中的一个难题。目前,主要有两种不同的RFID事件处理模型,一种以数据为中心,另一种以事件为中心。以数据为中心的方法首先将RFID数据存入数据库,然后在数据库的基础上支持事件处理。以事件为中心的方法直接将RFID事件流与预定义的规则比较,如果匹配成功,则向上层应用报告RFID事件。本文通过对RFID数据的特点进行分析,提出了RFID数据的多级存储模型。设计并实现了基于T链表树的RFID数据缓存、基于BerkeleyDB数据库的RFID数据仓库。将当前的RFID信息存入RFID数据缓存,提高RFID事件处理效率；将历史的RFID信息存入RFID数据仓库。针对RFID标签批量移动的特点,设计了分组移动方式的RFID数据仓库模式,该模式将RFID路径信息单独存储,多个标签可以共享路径信息,既减少了RFID数据的存储空间,又提高了查询效率。为了能够有效地处理RFID事件,本文设计并实现了针对RFID数据缓存的更新算法,同时设计并实现了两种不同的数据传输算法来更新RFID数据仓库。第一种单元组数据传输算法基于单个RFID事件,第二种多元组数据传输算法基于多个RFID事件,通过实验验证第二种数据传输算法比第一种数据传输算法效率较高。
[Abstract]:With the continuous expansion of RFID application scale and the explosive growth of the amount of data produced, how to manage these massive data effectively becomes a difficult problem in the research of RFID technology. At present, there are two kinds of RFID event processing models. One is data-centric, the other event-centric. A data-centric approach first stores RFID data in a database. Then the event handling is supported on the basis of the database. The event-centric method directly compares the RFID event flow with the predefined rules and reports the RFID event to the upper layer if the match is successful. By analyzing the characteristics of RFID data, this paper puts forward a multilevel storage model of RFID data, designs and implements the RFID data cache based on T-linked list tree. The RFID data warehouse based on BerkeleyDB database. The current RFID information is stored in the RFID data cache to improve the efficiency of RFID event processing, and the historical RFID information is stored in the RFID data warehouse. The RFID data warehouse mode of packet moving mode is designed, which stores RFID path information separately, and multiple tags can share path information, which not only reduces the storage space of RFID data, but also improves the query efficiency. In order to deal with RFID events effectively, this paper designs and implements an update algorithm for RFID data cache. At the same time, two different data transmission algorithms are designed and implemented to update the RFID data warehouse. The first one is based on a single RFID event, the other is based on multiple RFID events. Experimental results show that the second data transmission algorithm is more efficient than the first data transmission algorithm.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP391.44;TP333

【参考文献】