RF Power Detector for Location Sensing
RF Power Detector for Location Sensing
复制标题
用于位置感测的射频功率检测器
DOI：
10.1109/iecon.2004.1433385
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
N. Chong
中科院分区：
文献类型：
--
作者：
Myungsik Kim;T. Kubo;N. Chong
近年来，RFID在遥感应用领域开始流行。位置感知是部署 RFID 进行高级对象跟踪的最重要关键之一。一般来说，多个参考射频站或附加传感器用于通过 RFID 进行位置感测，但是，特别是在室内环境中，空间布局和成本问题限制了这些方法的适用性。在本文中，我们提出了一种利用有源 RFID 系统进行位置传感的新颖方法，无需参考站或额外的传感器。该系统使用连接到功率检测器的环形天线的信号模式对射频信号源的位置进行三角测量。功率检测器由信号强度检测器和信号分析单元组成。信号分析单元使用来自强度检测器的信号指示信号强度和序列号，并向应用目标提供信号的方向。我们根据阈值类型设计了三种不同的信号分析单元。所开发的系统可以在5°的最大误差范围内感应位于10 m以上的应答器的方向。在我们正常的办公环境下，属于合理范围。
Recently, RFID has become popular in the field of remote sensing applications. Location awareness is one of the most important keys to deploying RFID for advanced object tracking. Generally, multiple reference RF stations or additional sensors are used for the location sensing with RFID, but, particularly in indoor environments, spatial layout and cost problems limit the applicability of those approaches. In this paper, we propose a novel method for location sensing with active RFID systems not requiring the need for reference stations or additional sensors. The system triangulates the position of RF signal source using the signal pattern of the loop antenna connected to the power detector. The power detector consists of a signal strength detector and a signal analysis unit. The signal analysis unit indicates the signal strength and serial number using the signal from the strength detector, and provides the direction of the signal to the application target. We designed three different signal analysis units depending on the threshold type. The developed system can sense the direction to the transponder located over 10 m away within the maximum error of 5 °. It falls within a reasonable range in our normal office environment.
基于粒子滤波器的进化策略对非线性模型进行同步状态和参数估计
DOI：
--
发表时间：
2005
期刊：
Proc.of 10th International Symposium on Artificial Life and Robotics
影响因子：
--
作者：
K.Uosaki;T.Hatanaka
通讯作者：
T.Hatanaka