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本文介绍了为解决检测微弱的肺音信号而研究的空气耦合式肺音测量传感器.重点介绍声耦合方式的分析,声耦台腔的计算,以及该传感器的声参数测量,实测对比试验.根据实验结果认为该传感器具有频响宽、灵敏度高等特点,基本满足肺音检测的要求.
This paper introduces the air-coupled lung sound measurement sensor for the purpose of detecting the weak lung sound signal.It focuses on the analysis of the acoustic coupling mode, the calculation of the acoustic coupling stage, and the measurement of the acoustic parameters of the sensor. The experimental results show that the sensor has the characteristics of wide frequency response and high sensitivity, which basically meet the requirements of lung sound detection.