{"title":"Study on Microwave Thorax Imaging for Human Respiration Monitoring","authors":"Haolin Zhang;Tong Zhang;Maokun Li;Fan Yang;Shenheng Xu;Yeyu Cao;Zhongjun Yu;Aria Abubakar","doi":"10.1109/JERM.2024.3372296","DOIUrl":null,"url":null,"abstract":"A microwave thorax imaging system is designed for human respiration monitoring. A compact low-profile symmetrical dipole antenna is designed as sensing antenna. A 16-antenna array is fabricated and mounted on a wearable belt. The antenna array is controlled by a switch matrix and the data acquisition is completed with a vector network analyzer. During the measurement, each antenna acts as a transmitter alternately and the other antennas act as the receivers. Human respiration experiments are conducted and S-parameters are measured continuously during respiration. The Jacobian Weighted One-step Supervised Descent Method (SDM) is applied to the reconstruction of both synthetic and measured data. The distribution of dielectric properties in human thorax is reconstructed and the results verify the feasibility of monitoring human respiration with microwave.","PeriodicalId":29955,"journal":{"name":"IEEE Journal of Electromagnetics RF and Microwaves in Medicine and Biology","volume":null,"pages":null},"PeriodicalIF":3.0000,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Journal of Electromagnetics RF and Microwaves in Medicine and Biology","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/10472592/","RegionNum":0,"RegionCategory":null,"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
A microwave thorax imaging system is designed for human respiration monitoring. A compact low-profile symmetrical dipole antenna is designed as sensing antenna. A 16-antenna array is fabricated and mounted on a wearable belt. The antenna array is controlled by a switch matrix and the data acquisition is completed with a vector network analyzer. During the measurement, each antenna acts as a transmitter alternately and the other antennas act as the receivers. Human respiration experiments are conducted and S-parameters are measured continuously during respiration. The Jacobian Weighted One-step Supervised Descent Method (SDM) is applied to the reconstruction of both synthetic and measured data. The distribution of dielectric properties in human thorax is reconstructed and the results verify the feasibility of monitoring human respiration with microwave.
设计了一种用于人体呼吸监测的微波胸部成像系统。设计了一个小巧的对称偶极子天线作为传感天线。制作了一个 16 天线阵列,并安装在可穿戴腰带上。天线阵列由开关矩阵控制,数据采集由矢量网络分析仪完成。在测量过程中,每个天线交替充当发射器,其他天线充当接收器。进行人体呼吸实验,在呼吸过程中连续测量 S 参数。雅各布加权一步监督下降法(SDM)被应用于合成数据和测量数据的重建。重建了人体胸部的介电特性分布,结果验证了用微波监测人体呼吸的可行性。