| 摘要: |
| 现代物流对信息获取的及时性和准确性提出更高的要求.将RFID技术应用于物流容器，用以保存动态的物流信息，由此提出了信息容器的概念.针对RFID系统缺少存储管理、读写器对标签数据访问效率低的问题，设计实现了标签操作系统（tag operating system，简称TOS）RFID中间件体系.TOS依据电子产品代码（electronic productcode，简称EPC）的长度对标签内存进行分页，在标签内存中构建位示图以索引存储空间使用状态，应用数据存储格式标识提升内存分页的灵活性，并在上位机建立实时内存数据库提高对标签数据查询的效率.实验结果显示，TOS中间件可以提高读写器对标签数据的操作效率. TOS中间件可普遍应用于物品的生命周期管理. |
| 关键词: 存储管理 RFID 中间件 电子产品代码 内存分页 位示图 实时内存数据库 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金（51175394） |
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| Design and Development of RFID Middleware for Datastore |
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E Xiao-Zheng, LI Song, CHEN Ding-Fang
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School of Logistics Engineering, Wuhan University of Technology, Wuhan 430063, China
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| Abstract: |
| Speed and accuracy of information access are essential in modern logistics operations. In this paper, the RFID technology is applied to logistics containers for keeping information dynamically, and the concept of information containers as opposed to logistics containersis put forward. In order to improve the efficiency of data access on tag, a set of RFID middleware named tag operation system (TOS) is proposed. Firstly, the tag memory is paged according to the length of the electronic product code (EPC). Secondly, a bitmap is built up in the tag memory to index the free memory space. Thirdly, the data storage format identifier (DSFID) is designed to make memory paging more flexible. Finally, real-time memory database is set up in the host computer to improve efficiency of tag data query. The experimental results show that TOS can greatly enhance the efficiency of the reader operations on tag. TOS can be widely applied to the applications of lifecycle management of articles. |
| Key words: memory management RFID middleware EPC memory paging bitmap real-time memory database |
