本文阐述了RFID 中间件的概念、特点，回顾了RFID 中间件的发展历程，分析了国内外科研机构及企业研发 的RFID 中间件产品，阐述了RFID 中间件的研究现状与发展趋势。

This paper describes the concepts and characteristics of RFID middleware, reviews the development of RFID middleware, analyzes RFID middleware products that are developed by domestic and foreign research institutions and corporations. This paper also gives an overview of the current research status and development trends of RFID middlewa