摘要： 射频识别(RFID)中间件被喻为RFID系统的神经中枢，该文论述了目前RFID中间件的研究状况，指出了当前研究存在的一些不足，介绍了在这一领域的研究进展，对RFID事件处理的研究作了详尽的描述，并给出了今后的研究方向。

关键词: 射频识别, 阅读器, 中间件, 事件, 过滤

Abstract: RFID middleware is regarded as the nerve center of RFID systems. This paper discusses the current state of RFID middleware research, points out the deficiencies of current techniques, then describes the progress in this area, especially in RFID event process, at last gives the future research direction.

Key words: Radio frequency identification(RFID), Reader, Middleware, Event, Filter