一种铁路货车电子标签数据识别方法

An Identification Method of Data in Lorry Tag

货车标签被读写器发射的射频能量激活后,将连续不断地、周而复始地返回标签中的数据帧给读写器。当货车运动时,电子标签返回给读写器的信号受多径效应的影响,出现衰落现象,使读写器不能正确识别标签数据,而且标签信号出现衰落的时间是随机的。利用同步特征信号,可以采集到残缺的数据,并可以用三帧残缺的数据拼接出一帧完整的标签数据。

The lorry tag, powered up by the RF energy of a reader, transmits the data in the tag to a reader continuously and periodically. The signals of a moving tag backscattered to a reader are faded under the influence of multi-path effect, so that the reader could not identify the data sent by the tag. The time when the faded signals happen is stochastic. By using in-phase stamp signals, some remainder bits in a frame of data could be collected, and a complete frame of data joined by utilizing three frames of the remainder data of the tag.