一个低功率RFID传感器系统的设计,基于RF能量采集和防碰撞算法
Xin Mao1, Xuran Zhu2, Jincheng Lei1
1Shien-Ming Wu School of Intelligent Engineering, South China University of Technology, Guangzhou 511442, China.
Sensors (Basel, Switzerland)
|February 13, 2026
概括
这项研究介绍了一种新的硬件软件RFID传感器系统,可以提高射频能量采集效率并降低传感器功耗. 新的双门级增级动态框架插槽ALOHA (DTS-DFSA) 算法增强了标签的抗碰撞性能.
科学领域:
- 电气工程 电气工程
- 计算机科学 计算机科学
- 无线通信无线通信
背景情况:
- 无线电频率识别 (RFID) 传感系统将无线电力传输与数据识别相结合.
- 现有的被动RFID系统面临挑战,包括低射频能量收集效率,高传感器功耗和复杂的抗碰撞算法.
研究的目的:
- 提出一个硬件-软件共同优化的RFID传感器系统,以克服传统被动RFID系统的局限性.
- 为了提高RF-DC能量转换效率,尽量减少传感器节点的功耗,并简化标签抗碰撞机制.
主要方法:
- 硬件改进包括使用低值RF Schottky二极管和电压乘数整流器中的输入电感器来提高信号幅度.
- 对传感器节点的电源和控制逻辑实施了低功耗管理策略.
- 提出了一种双门级动态框架槽 ALOHA (DTS-DFSA) 防碰撞算法,根据碰撞比率自适应调整框架长度.
主要成果:
- 最大RF-DC能量转换效率从60.56%增加到68.69%.
- 传感器负载电流从大约2.0mA (主动) 减少到74μA (置),证明了有效的功率封闭.
- 与现有的低复杂度方案相比,DTS-DFSA算法显示出更高的识别效率和更低的计算复杂性.
结论:
- 拟议的硬件-软件协同优化显著提高了被动RFID传感系统的性能.
- 增强的能源采集,低功耗管理和高效的抗碰撞算法解决了关键的实际挑战.
- DTS-DFSA算法为资源有限的嵌入式平台提供了可行的解决方案,需要有效的标签识别.
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