作　　者： ; ; ;

机构地区： 华南理工大学电子与信息学院

出　　处： 《科学技术与工程》 2010年第3期665-671,共7页

摘　　要： 近几年来,RFID技术取得了长足发展。更低成本、更高可读性的RFID标签的出现,极大的促进了RFID应用的扩展。然而任何一个RFID大规模应用,都离不开RFID中间件的作用。来自各种阅读器的数据经RFID中间件过滤、分组和计数后,这些数据被分派给各种应用。因为不同应用需要不同数据,所以中间件必须适应这些应用的特点。当存在许多RFID应用时,就必须要调整中间件以满足这些应用的需要。为每一个应用更改中间件,这将消耗更多时间和精力。构造了一个发布/订阅系统来满足中间件和应用程序之间数据交换的需求,并且根据这种设计,有可能使中间件独立于应用程序。当应用需求变化时,仅仅是重新订阅。这种做法提高了中间件的灵活性。 RFID technology has been dramatically improving so much in recent years, which in turn results in lower-cost tags and higher read reliability. In any large-scale implementation of RFID, RFID middleware plays a key role. Data from various readers are filtered, grouped and counted by RFID middleware and then these data are distributed to various applications. Since different applications require different data, middleware has to adapt to all applications. When more applications are in need, it is necessary to adjust middleware to satisfy them, which however costs lots of time and efforts. A publish/subscribe system to meet the demand on data exchange between middleware and applications are constructed. By virtue of this design,it is possible for middleware to be independent of applications. When demands for applications alter, what need to do is to subscribe again and this enhances the flexibility of middleware.

关 键 词： 中间件 发布 订阅 消息

领　　域： [电子电信] [电子电信]