摘要
RFID可实现远距离非接触式自动目标识别,可广泛应用于包装行业。RFID系统与传统通信系统一样存在信道竞争问题,即标签冲突和阅读器冲突问题,防冲突性能是RFID系统急待解决的关键技术。在分析RFID系统产生冲突的原因的基础上,采用轮寻机制、分时查询的方式解决标签冲突问题,提出通过2次同步来确保密集环境下,各阅读器向标签发送命令完成的时间点同步方法,从而消除各阅读器之间的相互冲突。
RFID technology plays vital role in packaging industry based on non-contacted long distance object recognition. RFID system also has the channel competition problem of tag collision and reader collision. Anti-collision is one of key technologies needed to be broken though. On the basis of analyzing the reasons of collision in RFID system, we adopted ferry search mechanism and timeshare enquiries to solve the problem of tag collision. A method of making the time of readers for transmitting commands to tags synchronously through twice synchronizing was provided to solve the problem of readers collision.
出处
《包装工程》
CAS
CSCD
北大核心
2008年第5期46-48,共3页
Packaging Engineering
基金
国家自然科学基金项目(60774069)
