The commonly used respiratory monitoring methods in clinical medicine are chest belt or ventilators, which are not easy to carry and cumbersome to operate. In order to solve this problem, a low-cost and portable magnetic induction phase detection system for respiratory monitoring is proposed. In this study, a magnetic induction tomography system for respiration detection is established, and the phase sensitivity of the system to conductive object is evaluated through a series of experiments. At the same time, phantom experiments are carried out to simulate the respiratory process, and the phase monitoring indicators are collected to describe different respiratory states. The experimental results show that the phase detection results are consistent with the changes in the respiratory cycle. The signal-to-noise ratio of the system is 79 dB. It proves the feasibility of using magnetic induction phase measurement in respiratory monitoring and provides a new detection method of respiratory monitoring.

中文翻译：

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一种用于呼吸监测的扫描磁感应相位测量系统设计

临床医学中常用的呼吸监测方式为胸带或呼吸机，携带不便，操作繁琐。为了解决这个问题，提出了一种低成本、便携的呼吸监测磁感应相位检测系统。本研究建立了一种用于呼吸检测的磁感应断层扫描系统，并通过一系列实验评估了该系统对导电物体的相位灵敏度。同时进行体模实验模拟呼吸过程，采集相位监测指标来描述不同的呼吸状态。实验结果表明，相位检测结果与呼吸周期的变化一致。该系统的信噪比为 79 dB。