使用无源RFID系统在仓库中定位托盘

使用无源RFID系统在仓库中定位托盘(中文5600字,英文3800字)
摘要：
仓库运作已成为供应链中的一项关键活动。托盘的位置信息非常重要，仓库管理可以提高托盘拣选和分拣的效率。射频识别（RFID）已被广泛用于物品识别的仓库中。同时，RFID技术在仓库管理中使用不足的托盘本地化也有很大的潜力。许多企业都在仓库管理中使用基于RFID的登记和库存系统。研究了本地化方法，该方法与现有的RFID登记和库存系统兼容。提出一种新的RFID定位方法用于托盘检入。利用附近标签的相位变化来估算添加托盘的位置。还提出了一种新的库存定位方法，用于对托盘库存进行梳理到达角（AOA）测量和接收信号强度（RSS）。使用标准的UHF无源RFID系统进行实验。实验结果表明一个可接受的定位精度可以满足要求仓库管理。
关键词：仓库管理；射频识别（RFID）；本土化；标签阶段

Localization of pallets in warehouses using passive RFID system
Abstract:
Warehouse operation has become a critical activity in supply chain. Position information of pallets is important in warehouse management which can enhance the efficiency of pallets picking and sortation. Radio frequency identification (RFID) has been widely used in warehouse for item identifying. Meanwhile, RFID technology also has great potential for pallets localization which is underutilized in warehouse management. RFID-based checking-in and inventory systems have been applied in warehouse management by many enterprises. Localization approach is studied, which is compatible with existing RFID checking-in and inventory systems. A novel RFID localization approach is proposed for pallets checking-in. Phase variation of nearby tags was utilized to estimate the position of added pallets. A novel inventory localization approach combing angle of arrival (AOA) measurement and received signal strength (RSS) is also proposed for pallets inventory. Experiments were carried out using standard UHF passive RFID system. Experimental results show an acceptable localization accuracy which can satisfy the requirement of warehouse management.
Key words: warehouse management; radio frequency identification (RFID); localization; tag phase