在GPS不完备条件下RFID列车定位研究

Research on RFID Train Location under Incomplete GPS

目前在城市轨道交通实际应用中,普遍采用的列车位置检测方式有轨道电路、计轴器以及GPS卫星定位法等,但这些手段都存在着一定的不足。从铁路运输速度快、密集度高、行车间隔短的特点出发,联系现代有轨电车列车位置检测的关键和难点,结合GPS应用优势与短板,提出于GPS不完备情况下采用高频射频识别(RFID)技术满足列车定位需求,其价格便宜、识别距离远、无法伪造、可重复读写且体积小巧,能够满足现代有轨电车位置检测的需要,同时可以避免目前检测技术存在的不足和缺陷。

At present, the commonly used train location detection methods include track circuit, axle counting machine and GPS in urban rail transit, but there are some deficiencies in these methods. Rail transit is featured with fast transport speed, high intensity and short headway, combined with the key and difficult points of the train location detection of modem trams, as well as GPS application advantages and disadvantages, the paper puts forward the method to use high frequency RFID （Radio frequency identification） technology to meet the needs of train positioning when GPS devices are not perfect. The method has advantages of low costs, long distance identification, unable to forge, reading ＆ writing repeatable and small size and can meet the requirements of modem tram position detection, avoiding the current detection technology deficiencies and defects.