Design And Implementation Of Heart Sound Signal Acquisition System Based On Arduino

With the rapid development of science and technology, especially information technology change rapidly, combined with biological information technology and electronic technology brings hitherto unknown change for the production of human life. By means of modern information technology, especially in signal analysis and processing methods, to explore the mysteries of life and to take all kinds of information is becoming the focus and hotspot of current research. Heart sound signal is one of the most important physiological signal of human body, the generation mechanism of the heart sound, it can well reflect the activity of the heart, blood flow and heart health. Detection and analysis of information can accurately judge the heart sound signal, early detection of cardiovascular disease, is an indispensable means of state of the heart and blood vessels. Early discovery has a great effect on the treatment to avoid the delay of the disease, and the large population of our country has caused the complexity of congenital heart disease screening, and to develop a portable diagnostic equipment, for the lack of cardiac auscultation experience of primary health care personnel, will undoubtedly bring great convenience for heart disease screening a large number of work. Based on the National Natural Science Foundation research project as the background, starting with the heart sound signal from the human body sensor collected, through the high precision A/D converter, and the Arduino open source platform current to control the heart sound signal is transmitted to the PC client PC, finally get the heart sound signals accurately, so as to further the heart sound signal processing, feature extraction, classification and identification of the signal sources accurately.This paper first introduces the heart sound signal data acquisition, and then on the heart sound signals and the physiological significance of diagnosis were analyzed. And then introduces the characteristics and the development environment of Arduino platform, and introduces the Intel Galileo controller and the performance is more powerful and compatible, the related hardware circuit analog to digital conversion, transmission control design, finally through the Ethernet to connect the PC terminal design of upper computer software, to display the heart sounds signal receiving and storage.Of all the summary at the end of the paper, and points out some deficiencies, for the follow-up work is prospected.