An Adaptive Voltage Control Scheme Using Heap Tree for Low Frequency RFID Tag

• Main Authors: Sheng-Tai Shu, 許勝泰
• Other Authors: Cheng-Chi Tai
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/60326398166771721828

碩士 === 國立成功大學 === 電機工程學系碩博士班 === 97 === Radio frequency identification (RFID) is a contactless technique for automatic identification system. Comparing with traditional barcode system, RDID has the advantages of larger communication message, further reading distance, and recognize multiple targets simultaneously. However, the accuracy of identification will decrease as the distance between RFID reader and electronic tag increases. In this thesis, we developed a stackable dynamical voltage-controllable scheme for RFID applications. The main idea of this technique is to adjust the working voltage dynamically, thus increasing the reading distance between reader and tags to improve the accuracy of identification. The controller is designed and implemented on a Field Programmable Gate Array (FPGA). The results show that the concept of adaptive power management can increase the accuracy is applicable in practical uses when the reading distance is increased.