摘要：

射频识别(RFID)技术利用无线射频信号对标签进行自动识别,在识别过程中无需目标在视野内,能够克服基于条形码或图像识别目标的局限性。为此,研究动态目标的快速定位,利用RFID获得的相位信息融合激光实现目标的快速定位。将RFID标签绑定在动态目标上,通过RFID 信号获得的相位信息估算目标的速度。在此基础上,利用激光传感器获取目标的速度、角度以及距离等运动信息,并将通过RFID相位得到的目标速度与激光获取的目标速度进行匹配,选择两者速度最优匹配点,再根据对应的激光的角度和距离信息确定目标的位置。实验结果 表明,该方法可有效提高定位精度。

关键词: 射频识别相位, 激光, 速度匹配, 最优匹配点, 动态目标定位

Abstract:

Radio Frequency Identification(RFID) technology uses radio signals to identify tags automatically.The recognition does not need objects to be in line of sight,which can overcome the limitation of the traditional bar-code or visual-based approaches.So this paper focuses on a fast approach for dynamic object localization based on the fusion of the RFID phase and the laser information.To be precise,it achieves the velocity estimation of an object attached with an RFID tag by the phase difference.On this basis,it uses a laser range finder to estimate speed,angle and distance of the obstacles.Then it selects the best match point between RFID velocity and laser velocity,which is used to determine the location of the object.Finally,it achieves the localization of dynamic objects based on the angle and distance information of laser.Experimental results show that the proposed method can effectively improve the accuracy of localization.

Key words: Radio Frequency Identification(RFID) phase, laser, speed match, the best match point, dynamic object localization

中图分类号: 

• TP18