Graduate Program of Biomedical Engineering, Yonsei University, Seoul 03722, Korea.
Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Korea.
Sensors (Basel). 2020 Mar 13;20(6):1607. doi: 10.3390/s20061607.
Continuous respiration monitoring is important for predicting a potential disease. Due to respiration measurements using contact sensors, it is difficult to achieve continuous measurement because the sensors are inconvenient to attach. In this study, a radar sensor was used for non-contact respiration measurements. The radar sensor had a high precision and could even be used in the dark. It could also be used continuously regardless of time and place. The radar sensor relied on the periodicity of respiration to detect the respiration rate. A respiration adaptive interval was set and the respiration rate was detected through harmonic quefrency selection. As a result, it was confirmed that there was no difference between the respiratory rate measured using a respiration belt and the respiratory rate detected using a radar sensor. Furthermore, case studies on changes in the radar position and about measurement for long periods confirmed that the radar sensor could detect respiration rate continuously regardless of the position and measurement duration.
连续呼吸监测对于预测潜在疾病很重要。由于使用接触式传感器进行呼吸测量，因此很难实现连续测量，因为传感器不方便附着。在这项研究中，使用雷达传感器进行非接触式呼吸测量。雷达传感器具有高精度，即使在黑暗中也能使用。它还可以随时随地连续使用。雷达传感器依靠呼吸的周期性来检测呼吸率。设置了呼吸自适应间隔，并通过谐波频率选择检测呼吸率。结果证实，使用呼吸带测量的呼吸率与使用雷达传感器检测到的呼吸率之间没有差异。此外，对雷达位置变化和长时间测量的案例研究证实，无论位置和测量持续时间如何，雷达传感器都可以连续检测呼吸率。
