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相关概念视频

Temperature Measurement Sites01:14

Temperature Measurement Sites

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A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
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相关实验视频

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Thermal Imaging to Study Stress Non-invasively in Unrestrained Birds
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人类生命体的非接触式监测:使用FMCW雷达和热摄像头进行同时测量的研究.

Soumitra Kundu, Gargi Panda, Aurobinda Routray

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |December 12, 2023
    PubMed
    概括

    这项研究引入了一种新的无接触系统,用于使用雷达和热成像来监测心率 (HR) 和呼吸率 (BR). 信号质量指标 (SQM) 允许传感器融合,以提高生命体征监测的准确性.

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    Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function
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    Using Fiberless, Wearable fNIRS to Monitor Brain Activity in Real-world Cognitive Tasks
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    相关实验视频

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    科学领域:

    • 生物医学工程 生物医学工程
    • 信号处理 信号处理
    • 医疗成像医学成像

    背景情况:

    • 对心率 (HR) 和呼吸率 (BR) 等生命体征的非接触式监测对于患者的舒适性和持续观察至关重要.
    • 现有的方法可能会因移动工件或环境变化而面临限制.
    • 整合多种传感方式可能可以克服单个传感器的弱点.

    研究的目的:

    • 开发和验证用于同时监控HR和BR的非接触式系统.
    • 评估频率调制连续波 (FMCW) 雷达和热成像用于生命信号检测的性能.
    • 引入一个信号质量指标 (SQM) 来评估测量质量,并使传感器融合.

    主要方法:

    • 利用FMCW雷达捕获身体运动信号,应用非负矩阵因子化 (NMF) 和波形分析来估计HR/BR.
    • 使用热成像来追踪鼻孔和额头区域的BR和HR估计.
    • 对50名受试者进行了实验,对脉冲氧计和基于视觉摄像头的腹部运动分析进行了验证.

    主要成果:

    • 雷达和热成像都提供了同时的HR和BR测量.
    • 确定了用于雷达 (随机体运动) 和热成像 (温度波动,出汗,遮) 的信号降解因子.
    • 开发了一个SQM来量化测量质量,证明了其用于传感器融合的实用性.

    结论:

    • 结合FMCW雷达和热摄像机,为无接触式生命体征监测提供了一个强大的方法.
    • 基于SQM的传感器融合策略提高了系统可靠性,特别是在具有挑战性的条件下.
    • 这种综合系统对持续和舒适的患者监测具有重要的临床意义.