CAJ | 학술논문

心音监测对心脏疾病的检测和预防有重要作用，研究并设计基于智能手机的心音监测系统。该系统由心音测量节点、智能手机节点、服务器端组成。测量节点实现心音信号的采集，智能手机节点接收测量节点的心音并将其经GPRS网络传递到服务器端，服务器端对心音进行远程的监测。其中智能手机节点是该系统的枢纽，其主要功能是分析处理心音：对心音进行小波去噪处理，通过LZ复杂度算法获取心音的特征指标，将特征指标用于心功能的分析评价及其异常预警。通过功能性测试表明该系统能稳定运行。
심음감측대심장질병적검측화예방유중요작용，연구병설계기우지능수궤적심음감측계통。해계통유심음측량절점、지능수궤절점、복무기단조성。측량절점실현심음신호적채집，지능수궤절점접수측량절점적심음병장기경GPRS망락전체도복무기단，복무기단대심음진행원정적감측。기중지능수궤절점시해계통적추뉴，기주요공능시분석처리심음：대심음진행소파거조처리，통과LZ복잡도산법획취심음적특정지표，장특정지표용우심공능적분석평개급기이상예경。통과공능성측시표명해계통능은정운행。
Heart sound monitoring plays an important role in the detection and prevention of heart diseases. A heart sound monitoring system based on smartphone is researched and designed, which consists of measurement node, smart phone node and server side. The measurement node is employed to acquire the heart sound. The smartphone node receives the heart sound from the measurement node, and then the acquired data are transmitted to the server by GPRS network. Remote monitoring of the heart sound is realized on the sever side. The smartphone node is the center of the system and its main function is to analyze and process the heart sound. Firstly, heart sound is preprocessed with the threshold denoising method based on the wavelet transform. Secondly, features are extracted by LZ(Lempel-Ziv)complexity algorithm. Lastly, the features are used to evaluate cardiac function and alert its abnormality. Through functional test, the system can operate stably.