基于射频识别的列车精确定位技术分析

摘要

精确地确定列车在线路中的位置,是保证安全、提高效率、优化服务的重要前提.基于射频识别的精确定位技术,是通过2.45 GHz射频阅读器识别射频标签和监测场强变化的功能,来精确定位列车在线路中的位置.以TagMaster公司的射频识别系统为例,介绍了基于射频识别的精确定位技术的安装和测试方法.模拟测试和实测数据表明,基于射频识别的列车精确定位技术的定位偏差不超过±10 cm.%One of the preconditions of safety, high efficiency and good service in rail transit is the accurate positioning (APOS). APOS technique is based on RFID which could realizes the accurate monitoring and detect the variation of the field strength by 2.45GHz reader that reads the tags.This paper takes TagMaster RFID system as an example,introduces the installation and testing method of APOS.The simulated and tested data show that the deviation is less than +/- 10cm, that means APOS based on RFID could be widely used in urban rail transit.