心音和呼吸音是评价人体心肺功能健全的重要指标，由于信号比较微弱且包含较强噪声，而通用传感芯片听诊器件又难以捕捉一些微弱的生理信号，导致辨诊准确性较差，所以优良的传感采集结构与技术对心肺疾病的非侵入式远程诊断具有重要的意义。项目针对传统听诊技术对医生主观依赖性强和受人耳听觉限制的缺陷、国外听诊装备昂贵，以及目前国内数字化民用听诊技术装备稀缺且无法实现智能诊断的瓶颈问题，提出一种MEMS微加速度液体耦合传导声信号采集方案，围绕心音与呼吸音体征信号产生机理与拾振耦合关联传导机制等科学问题，开展低成本、微小型MEMS加速度听诊系统集成理论分析与结构设计，构建解决数字听诊噪声解耦与抑制的方法模型，突破微加速度听诊装备集成制造应用的技术限制。为实现微型化、数字化的高精准、低成本MEMS家用听诊设备提供理论和技术支撑。

Heart sound and breath sound are important indexes to evaluate the sound of human heart and lung function. The signal is weak and contains strong noise, and the general auscultation sensor chip device can hardly capture any weak physiological signals, leading to poor diagnosis accuracy.Therefore the excellent sensor acquisition structure and technology is of great significance for non-invasive remote diagnosis of cardiopulmonary diseases. The MEMS micro acceleration liquid-body coupling conduction acoustic signal acquisition scheme is proposed to solute the defects of traditional auscultation technology, such as strong subjective dependence on doctors and limited by human hearing, expensive auscultation equipment abroad, and the bottleneck of domestic digital civil auscultation technology, which can not realize intelligent diagnosis. Focusing on the generation mechanism and vibration pick-up of heart sound and respiratory sound sign signals coupled with scientific problems such as related conduction mechanism,the theoretical analysis and structural design of low-cost and micro MEMS acceleration auscultation system integration are carried out, a method model to solve the decoupling and suppression of digital auscultation noise is built, and the technical limit of integrated manufacturing application of micro acceleration auscultation equipment is breaked. The above study provides theoretical and technical support for the realization of micro, digital, high-precision and low-cost MEMS home auscultation equipment.