Abstract: Radio Frequency Identification(RFID) is a kind of wireless, non-contact automatic identification technology. It is communicated non-contactly by radio frequency to exchange data and identify objects. RFID has many successful applications in foreign countries, but it has not been used much in China. In this paper, the essential principle, character and frequency of RFID is introduced; and it is compared to barcode and magnetic card, then some applications of RFID such as Electronic Toll Collection System (ETCS) and Advanced Travel Information System (ATIS) are analyzed. Finally the future of RFID application is forecast.

Key words: radio frequency identification(RFID), tag, reader, electronic toll collection system (ETCS), ATIS

摘要： 射频识别（RFID）技术是一种无线的、非接触的自动识别技术，它利用射频方式进行非接触双向通信，以交换数据达到识别目的，射频识别技术在国外已经有了许多成功的应用，但在我国的应用正处于起步阶段。本文介绍了射频识别的基本原理、特点及工作效率，并与条码、磁卡做了相应的比较，然后分析了在自动收费、自动车号识别系统等方面的应用，最后对射频识别的应用前景做了展望。

关键词: 射频识别, 电子标签, 阅读器, 自动收费, 自动车号识别系统