Non-contact measurement of respiratory cycles using a microphone array
Non-contact measurement of respiratory cycles using a microphone array
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使用麦克风阵列非接触式测量呼吸周期
DOI：
10.1007/s10015-017-0413-y
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Masayuki Miwa and Masafumi Uchida
中科院分区：
文献类型：
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作者：
S. Hasegawa;Masayuki Miwa and Masafumi Uchida
以前提出的呼吸测量方法依赖于热敏电阻或应变仪，它们必须在整个测量过程中接触身体，从而导致潜在的不适。在这里，我们开发了一种非接触式系统，通过使用麦克风阵列检测呼气声音来测量呼吸周期。通过麦克风阵列记录多个呼吸声信号，并通过独立分量分析方法从原始测量数据中分离出呼吸信号。将所提出的方法的呼吸分析与先前验证的热敏电阻方法进行了比较。通过这两种方法获得了类似的测量结果，证实了所提出的方法在不影响测量性能的情况下减轻了用户的不适。
Previously proposed methods of respiration measurement have relied on thermistors or strain gauges, which must contact the body throughout the measurement, causing potential discomfort. Here, we develop a non-contact system that measures respiratory cycles by detecting the exhalation sounds using an array of microphones. Several respiratory-sound signals were recorded by the microphone array, and the respiratory signal was separated from the raw measurement data by the independent component analysis method. Respiratory analysis by the proposed method was compared with that of the previously validated thermistor method. Similar measurements were obtained by both methods, confirming that the proposed method eases the discomfort of users without compromising the measurement performance.