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公开(公告)号:US06241683B1
公开(公告)日:2001-06-05
申请号:US09255003
申请日:1999-02-22
IPC分类号: A61B500
摘要: To compensate for the poor signal-to-noise ratio when transforming a patient tracheal sound signal into a respiration flow signal, the transformed signal is used when the sound signal is above a threshold, and interpolated values are used when the sound signal is below the threshold. A volume of breath signal is reliably obtained. Respiration start/stop is detected either by analyzing the sound signal or by physical measurement of the patient. A wearable device incorporating the sound signal processing method can provide an immediate indication or alarm when the volume of breath signal indicates a condition requiring medical attention.
摘要翻译: 为了补偿将患者气管声音信号转换成呼吸流量信号时的差的信噪比,当声音信号高于阈值时使用变换的信号,并且当声音信号低于声音信号时使用内插值 阈。 可靠地获得体积的呼吸信号。 通过分析声音信号或通过患者的物理测量来检测呼吸开始/停止。 结合声音信号处理方法的穿戴式装置可以在呼吸信号指示需要医疗照顾的状况时提供即时指示或警报。