UHF RFID Analog Sensor System Using Power-Independent Antenna Optimization

IF 3.7 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-12-04 DOI:10.1109/LAWP.2024.3510835

Jing Guo;Youxin Zhang;Xu Zhang;Zhiyun Lin

{"title":"UHF RFID Analog Sensor System Using Power-Independent Antenna Optimization","authors":"Jing Guo;Youxin Zhang;Xu Zhang;Zhiyun Lin","doi":"10.1109/LAWP.2024.3510835","DOIUrl":null,"url":null,"abstract":"Ultrahigh frequency radio-frequency identification (UHF RFID) tags are extensively utilized for their cost-effective provision of rudimentary sensing capabilities. However, the existing UHF RFID analog systems face efficiency challenges in multitag scenarios due to the need for individual radiated power adjustments for each tag to accommodate varying chip impedances. This letter introduces a novel sensing consistency coefficient and power transfer efficiency to ensure a point-to-point mapping between antenna-sensitive factors and auto-tuned values, independent of spatial factors across supported received power levels. By optimizing the dimensions of the RFID antenna layout based on chip impedance values at these power levels, we achieve a power-independent consistent mapping model that does not compromise communication performance. Furthermore, we propose an infusion monitoring system that employs a flexible, passive UHF RFID tag placed exterior to the drip chamber. This system triggers an early warning indicator for low liquid levels within the drip chamber by measuring auto-tuned values, prompting nursing staff to take follow-up actions. Experimental results demonstrate consistent mapping relationships between antenna-sensitive factors and auto-tuned values under diverse spatial conditions. This study not only enhances the time efficiency of the read/write device in multitag environments but also paves the way for new applications of UHF RFID in medical monitoring and similar fields.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 3","pages":"651-655"},"PeriodicalIF":3.7000,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Antennas and Wireless Propagation Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10777479/","RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 0

Abstract

Ultrahigh frequency radio-frequency identification (UHF RFID) tags are extensively utilized for their cost-effective provision of rudimentary sensing capabilities. However, the existing UHF RFID analog systems face efficiency challenges in multitag scenarios due to the need for individual radiated power adjustments for each tag to accommodate varying chip impedances. This letter introduces a novel sensing consistency coefficient and power transfer efficiency to ensure a point-to-point mapping between antenna-sensitive factors and auto-tuned values, independent of spatial factors across supported received power levels. By optimizing the dimensions of the RFID antenna layout based on chip impedance values at these power levels, we achieve a power-independent consistent mapping model that does not compromise communication performance. Furthermore, we propose an infusion monitoring system that employs a flexible, passive UHF RFID tag placed exterior to the drip chamber. This system triggers an early warning indicator for low liquid levels within the drip chamber by measuring auto-tuned values, prompting nursing staff to take follow-up actions. Experimental results demonstrate consistent mapping relationships between antenna-sensitive factors and auto-tuned values under diverse spatial conditions. This study not only enhances the time efficiency of the read/write device in multitag environments but also paves the way for new applications of UHF RFID in medical monitoring and similar fields.

查看原文本刊更多论文

基于功率无关天线优化的超高频RFID模拟传感器系统

超高频射频识别（UHF RFID）标签因其具有成本效益的基本传感能力而被广泛使用。然而，现有的超高频RFID模拟系统在多标签场景下面临效率挑战，因为每个标签需要单独的辐射功率调整以适应不同的芯片阻抗。这封信介绍了一种新的传感一致性系数和功率传输效率，以确保天线敏感因素和自动调谐值之间的点对点映射，独立于支持接收功率水平的空间因素。通过优化基于这些功率水平的芯片阻抗值的RFID天线布局的尺寸，我们实现了不影响通信性能的与功率无关的一致映射模型。此外，我们提出了一种输液监测系统，该系统采用放置在滴注室外部的柔性无源超高频RFID标签。该系统通过测量自动调整的数值，触发点滴室内低液位的预警指示器，提示护理人员采取后续行动。实验结果表明，在不同的空间条件下，天线敏感因子与自调谐值之间存在一致的映射关系。该研究不仅提高了多标签环境下读写设备的时间效率，而且为超高频RFID在医疗监测等领域的新应用铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.