一种射频有源标签充电器的设计与实现

Design and implementation of a RF active tag charger

有源射频识别(RFID)技术因其工作距离远、读写功耗低等优势,在民用和军事领域中得到了广泛的应用。由于某些特殊应用场合的限制,有源RFID标签需要实现具有防水、防尘等性能的全密闭封装。为解决全密封的有源RFID标签电池充电问题,提出了一种无线充电电路的设计与实现方案。首先,介绍了整个电路的实现原理,分析了发射和接收电路的实现方式;其次,设计并实现了可对40个标签同时充电的电路;最后进行了标签的充电和放电实验。实验结果表明,所设计的充电电路性能稳定,充电时间较短。

Active Radio Frequency Identification （RFID） technology with the advantages of long working distance and low reading and writing power consumption, has been widely used in civilian and military fields Due to the limitations of some special applications, the active RFID tags need to implement a hermetically enclosed package with performance of waterproof and dustproof and so on. To solve the charging problem of the fidly sealed active RFID tags, a design and implementation of a wireless charging circuit is presented.Firstly the paper introdues the principle of the whole circuit and analyzes the implementation of transmitter and receiver circuit; Secondly, the charging circuit that can charge to 40 tags at the same time is designed and implemented; finally, the charge and discharge experiments of the tags are done.The results show that the performance of the charging circuit is stable and the charging time is shorter