基于低级别读写器协议的无线射频识别中间件系统

无线射频识别（RFID）技术的应用在近年来取得了长足的发展。RFID中间件系统是RFID网络的重要组成部分，位于RFID应用系统和RFID读写器之间，是RFID标签信息的处理中枢。传统的RFID中间件系统对上层的RFID应用系统提供了统一的应用层事件（ALE）接口，但是和RFID读写器之间的连接则采用适配读写器厂商私有接口的方式，不利于快速构建RFID应用系统。基于低级别读写器协议（LLRP）的RFID中间件系统提供了标准的接口来接入不同厂商的读写器，大幅度地提高了构建RFID应用系统的效率。

RFID Middleware System based on the Low-Level Reader Protocol

The application of Radio Frequency Identification （RFID） technology has proceeded rapidly in recent years. The RFID middleware system—between the application system and readers—is an important component of the RFID network, and functionsas a tag information processing centre. Conventional RFID middleware systems provide a unified ALE （Application Level Events） interface for the upper layer application system, while establishing a connection with readers by adapting to variable private interfaces. This is obviously not beneficial for the rapid construction of the RFID application system. On the other hand, another kind of RFID middleware system, based on Low-Level Reader Protocol （LLRP）, offers a standard interface for connecting readers of different manufacturers, This significantly improves the efficiency of building the RFID application system.