摘要
为了有效降低RFID有源电子标签应用过程中的功率损耗,提升使用寿命,设计了一种基于低频唤醒的RFID有源电子标签。将低频唤醒技术作为电子标签系统硬件的主要元素,采用LC并联谐振电路设计理念,通过低频唤醒接收、高频收发、电源、控制、其余外设5个板块组建有源电子标签硬件结构。计算电路的谐振频率与品质因子,运用AS3933低频唤醒芯片监听固定区域频率生成的唤醒信号;使用C语言和星型拓扑下的工作流模型搭建RFID有源电子标签软件部分,为避免电子标签碰撞利用哈希算法确定各电子标签对应某唯一值,给标签配发输送时隙,利用得到的时隙和阅读器实现通信,完成低功耗有源电子标签设计目标。仿真结果证明,所提方法低频唤醒距离长且唤醒稳定性高,休眠功耗较低,有效延长了有源电子标签使用年限,拥有极强实用性。
In order to effectively reduce the power loss in the RFID active electronic tag and improve its service life, an RFID active electronic tag based on low frequency wake-up is designed. The low-frequency wake-up technology is regarded as the main hardware element of the electronic tag system, and the LC parallel resonant circuit design is adopted. The hardware structure of the active electronic tag is composed of low-frequency wake-up receiving, high-frequency transceiver, power supply, control and other peripherals. The resonant frequency and quality factor of the circuit are calculated, and the AS3933 low-frequency wake-up chip is used to monitor the wake-up signal generated by the fixed area frequency. In order to avoid the collision of RFID tags, the Hash algorithm is used to determine the corresponding unique value of each tag, and the tag is allocated with transmission time slot. The obtained time slot is used to communicate with the reader to achieve the goal of low-power active electronic tag design. Simulation results show that the proposed method has long low-frequency wake-up distance, high wake-up stability and low sleep power consumption, which effectively extends the service life of active tag and has strong practicability.
作者
史胜玉
聂琪鹤
王文赫
朱云良
白鹏飞
SHI Shengyu;NIE Qihe;WANG Wenhe;ZHU Yunliang;BAI Pengfei(Beijing Zhixin Microelectronics Technology Co.,Ltd.,Beijing 100192,China)
出处
《微型电脑应用》
2023年第2期104-107,118,共5页
Microcomputer Applications
