对24 GHz CW 雷达进行全面评估,以准确监测呼吸和心率
概括
一个24GHz的连续波 (CW) 雷达准确地监测呼吸和脉冲率的非接触. 这项技术对健康个体的持续,不引人注目的心肺健康监测有前途.
科学领域:
- 生物医学工程 生物医学工程
- 心脏呼吸系统监测 监测心脏呼吸系统
- 雷达技术 雷达技术的使用
背景情况:
- 持续监测生命体征对于评估心肺呼吸系统健康至关重要.
- 无接触方法为患者的舒适性和持续的数据采集提供了优势.
- 雷达技术为新的生命体征监测提供了一个潜在的途径.
研究的目的:
- 为了评估24GHz连续波 (CW) 雷达系统对生命体征的非接触式监测的有效性.
- 为了评估雷达提取的呼吸,脉冲和心脏声率与参考系统的准确性.
- 探索呼吸变化和雷达检测到的胸部运动模式之间的关系.
主要方法:
- 使用24 GHz连续波 (CW) 雷达系统进行数据采集.
- 从雷达信号中提取瞬间和平均心肺呼吸率.
- 将雷达衍生生命体征与已建立的参考监测系统进行比较.
- 分析了呼吸变化和胸部位移模式.
主要成果:
- 即时呼吸和心脏声率与参考系统有很强的一致性 (MAE:0.57次呼吸/分钟和2.46次心跳/分钟).
- 从雷达脉冲信号中获得的平均心率显示出高准确度 (MAE:2.41次/分钟).
- 呼吸变异性分析表明,在较低的呼吸速率下,胸部运动分布更广泛.
结论:
- 24 GHz CW 雷达系统能够准确且无接触地监测生命体征.
- 雷达对细微胸部位移的灵敏度支持其适用于持续心肺呼吸监测的适用性.
- 这项技术有可能在临床环境中对心肺呼吸系统健康进行不显眼的评估.
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