摘要
目前,有关射频识别的多目标研究大多集中在如何实现高效的防碰撞算法上,而对于长距离的读写卡来说,此类算法不仅效率很低,而且准确率也不高,从而导致射频通信的灵敏度大大下降。通过分析2.45GHz频段的射频电磁场,并结合网络集线器的工作原理,提出了一种基于虚拟网络集线器改进的射频识别通信模型,给出了该模型的软件实现,并对该模型进行了测试。测试结果表明,系统运行良好,基本达到了预期的目标。该模型的提出为射频识别的研究开辟了一种新颖的思路。
At present, most of the studies on multi-target of RFID is focused on how to realize high efficiency collision prevention algorithms. While to the long range RFID reading and writing, these algorithms are in low efficiency and low accuracy; this makes the sensitivity of RF communication greatly decreased. Through analyzing the 2.45 GHz RF electromagnetic field, and combining the working principle of network hub, an improved RFID communication model based on virtual hub is proposed. The software implementation of the model is given, and the model has been tested. The result of the test indicates the operation is excellent and meeting anticipated goal. The model explores a new path for RFID studying.
出处
《自动化仪表》
CAS
2008年第11期29-32,36,共5页
Process Automation Instrumentation
基金
上海市重点学科建设项目资助(编号:T0103)
关键词
射频识别
集线器
通信
软件实现
测试
模型
RFID Hub Communication Software implementation Test Model .
