Development of RFID Automatic Warehouse Management System for Steel Coil

摘要

In order to track and manage the steel coil logistics produced by CSC, and provide effective and reliable steel coil ID information, to avoid mixing or misplacement issue, resulting in customer complaints and affecting the reputation of the company. The research group designed and developed a RFID metal tag, the antenna was built by printing meander line radiating elements with a resonant frequency to meet the range of UHF RFID. Besides, the antenna has a proper directional radiation pattern and gain which can be applied on site. Furthermore, the research group developed and built the Crane RFID system, which can provide real-time automatic identification of steel coils. The system included RFID antenna, reader, and wireless transmission ability. For solving and overcoming the problem of multi-path interference caused by RF signals, we also developed an algorithm which was based on decision tree that applied the RF strength and density.