The invention relates to a vehicle unique identification system based on RFID reverse link power detection, and the system comprises the steps: reading RFID forward and backward power through a front-end detector, and achieving the distance measurement and single identification of a vehicle at various entrances and exits; reading the electronic vehicle identifier by using an RFID reader-writer; the RFID fixed reader-writer working in an inventory state of a certain period and reading RFID vehicle electronic tag information in an identification and reading range; after the judgment device checks and reads the identification information, the system entering a judgment state; correspondingly storing the power information fed back by the antenna end detector after the identifier is read each time in the checking process; judging and checking are carried out, checking all the previously read identifiers again through a preset reverse power threshold, setting the threshold as the vehicle distance of the whole vehicle, and guaranteeing the uniqueness of identifier reading in the whole vehicle distance range; and if the judgment response inventory is not unique, reminding all vehicles to pay attention to keeping the vehicle distance, and then performing the same judgment inventory and identification recognition.
本发明涉及一种基于RFID反向链路功率检测的车辆唯一识别系统,包括:通过前端检波器读取RFID前向和后向功率,实现车辆在各种出入口测距和单一识别;利用RFID读写器读取电子车辆标识;RFID固定式读写器工作于一定周期的盘点状态,读取识读范围内的RFID车辆电子标签信息;判决装置盘点读取到标识信息后,系统进入判别状态;盘点过程中,每次读取标识以后,将天线端检波器反馈回来的功率信息,对应存储;进行判别盘点,通过预设定的反向功率门限对前面读取的所有标识重新盘点,将门限设定为整车车距,保证标识读取在全车距范围的唯一性;若判别响应盘点不唯一,提醒所有车辆注意保持车距,再进行同样的判别盘点,以及标识识别。
Vehicle unique identification method based on RFID reverse power detection
一种基于RFID反向功率检测的车辆唯一识别方法
2020-05-05
Patent
Electronic Resource
Chinese
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