HTML)

分享到：

《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

Author(s):: WANG Liheng; WANG Xiangli; CHEN Dang; XIA Yinli; School of Electric and Information Engineering, Wuhan Institute of Technology,Wuhan 430205, China

Keywords:: electronic tag; wireless radio frequency identification; coupling

摘要:: 为了提高超市商品的识别效率，针对超市中不能自动快速识别多个条形码的问题，采用电子标签来代替条形码，设计了一种无线射频识别装置.通过无线射频识别通道、阅读器勘误（中间层）以及自动计费系统来实现超市中商品自动识别的功能.以凌阳61单片机作为主控器，配合常用编码解码芯片PT2262/2272实现阅读器对应答器的识别，编码数据的收发控制，以及信息的存储读写功能；采用模拟开关TS5A3166完成负载调制；使用变压器耦合方式较好地实现了应答器和阅读器之间的数据传输和能量交换.该无线识别装置实现了阅读器对应答器预置信息的识别，实现了较远距离的无线能量传输和极低误码率的二进制数码传输，及对应答器存储芯片的读写以及存储器内容显示的功能.结果表明：每250 ms便可从射频标签中读出商品的相关数据，误码率极低，阅读器的收发距离大于20 cm.

Abstract:: To solve the problems that multiple barcodes can not be identified automatically with high speed and to improve the efficiency of commodity identification, electronic label was used to replace the bar code. A kind of radio frequency identification device was designed to realize the automatic recognition of supermarket goods through the radio frequency identification channel, reader differential (middle layer) and automatic billing system. The SUNPLUS 61 microchips was used as the controller, and the coding and decoding chip PT2262/2272 was used to realize the identification of the reading machine to the transponder, the transmitreceive controlling of the coding data，and the writing, reading and storing of the information; the analog switch TS5A3166 was used to finish load modulation; transformer coupled mode was used to realize the data transmission and energy exchanging between the transponder and the transceiver well. The reader to transponder preset information recognition, a remote wireless energy transmission and low error rate of binary digital transmission were realized in the wireless identification device. The obtained results indicate that the related data about goods is read from radio frequency tags every 250 ms, the error rate is extremely low, the transitreceive distance of the reader is more than 20 cm.

［1］栾文利,毛贵才.无线射频识别(RFID)技术的应用分析\[J\].黑龙江科技信息,2012（17）：19.

［2］刘小兵，苏磊，冯浩,等.基于51单片机的无线识别装置系统\[J\].国外电子元器件,2008，16(10)：7778，81.

3］黄利军.一套基于耦合线圈的无线识别装置的设计\[J\].科技创新导报,2010(6):245.

［4］韩团军.基于射频技术的无线识别系统设计\[J\].电子技术，2010，47（8）：2426.

［5］高小明.一种无源RFID无线射频识别系统的研究与设计\[J\].微计算机信息，2009,25(20):161163.

［6］彭仁明,潘晓慧.基于RFID无线识别器的设计\[J\].黔南民族师范学院学报,2010，30(3):3942.

［7］高吉祥，王晓鹏，宋克慧.全国大学生电子设计竞赛培训系列教程：2007年全国大学生电子设计竞赛试题剖析\[M\].北京：电子工业出版社,2009.

［8］张肃文. 高频电子线路：第五版\[M\]. 北京:高等教育出版社, 2009.

备注/Memo:: 收稿日期：20121106基金项目：国家自然科学基金项目（61271363）作者简介：王利恒（1973），男，湖北武穴人，副教授，博士.研究方向：检测技术及智能仪器仪表.

更新日期/Last Update: 2013-04-10