利用动态时间槽分配的多目标防冲突射频识别

对于总数未知的多目标射频识别问题,提出了基于智能标签的具有防冲突功能的多目标射频识别技术方案及其系统框架;改进了ISO/IEC15693标准中的冲突解决方案,采用地址访问策略的自匹配模式,动态调整时间槽的分配,以解决通讯冲突并逼近目标数目;分析了系统实现的软硬件参数的优化选择方法,给出了多目标防冲突识别的实现过程,并将其应用于某图书馆智能管理系统.实验结果表明该技术可以提高智能标签防冲突识别的效率和准确性,能够满足该领域实际需求,具有良好的实用推广价值.

Multiple object anti-collision RFID technology with dynamic slot allocation

To identify multiple objects simultaneously assuming that the number of labels is not known in advance, multiple objects anti-collision RFID(radio frequency identification) technology and its application system model were presented. The collision solution in ISO/IEC15693 standard was improved, with the self-match mode in address access policy and the dynamic slot allocation. These were used to solve collision problem and approach the expected target during identifying process. A method was discussed to determine and optimize the system parameters. Based on the model and the cycle of anti-collision identification, a system was developed and applied in a project of smart management system in library. The results of experiment indicate that the identification performance is more effectively and accurately. This technology can satisfy more requirements and its application range is still extended.