Low-Cost Heart Sound Acquisition System Based on Intelligent Mobile
Terminal
XU Li-sheng1,2,LV Wen-long1,BO Hong-rui1, KANG Hong-yu1,LIU Jia-jin1, ZHANG Ke-xin3,WANG Qiang1
1.Sino-Dutch Biomedical and Information
Engineering School of Northeastern University,
Shenyang Liaoning 110016, China; 2.Medical
Image Computing Key Laboratory of Ministry
of Education, Shenyang Liaoning 110819,
China; 3. Liaoning University of Traditional
Chinese Medicine, Liaoning 110004, China
Abstract：Objective To prevent cardiovascular diseases, and reduce the cost of the electronic stethoscope,
this article designs and implements a heart sound acquisition system based on low-cost smart phone and
Android system. Methods In this paper, the acquisition of the heart sounds is achieved by combining the
design of hardware and software. Via an AV cable, the designed hardware of this system transmits analog
heart sounds signal to a smart phone. The heart sounds can be real-time displayed on the smart phone and
can be saved as wav format for further analysis and transmission through our designed software based
on Android system. By using subjective evaluation and objective evaluation method, the performance of
our designed stethoscope was compared with these of two commercial stethoscopes, which have widely
clinical applications currently on the market. Results The designed system can stably capture heart
sounds with high quality. The SNR of the phonocardiogram is high enough. Compared with two kinds of
clinical stethoscopes, the performance of our designed system is satisfactory. Conclusion The system is
portable. The acquisition of heart sound signal is convenient and accurate. Through intelligent terminals,
this system can send heart sound data to doctors for further diagnosis.
徐礼胜1,2，吕文龙1，薄红瑞1，康宏宇1，柳家进1，张柯欣3，王强1. 基于智能移动终端的低成本心音采集系统[J]. 中国医疗设备, 2016, 31(9): 24-28.
XU Li-sheng1,2,LV Wen-long1,BO Hong-rui1, KANG Hong-yu1,LIU Jia-jin1, ZHANG Ke-xin3,WANG Qiang1. Low-Cost Heart Sound Acquisition System Based on Intelligent Mobile
Terminal. China Medical Devices, 2016, 31(9): 24-28.
