Design of heart and lung auscultation training system based on BF518

In this paper, we design a system that it is used for simulating heart and lung auscultation for medical students. The single chip BF518 with low power assumption and higher performance is used in the system as the core processor. And it can play 16 audio files at the same time. So the system becomes more realistic in the operation of the real clinical environment. In the class, the reproduction of clinical scenarios for learners could provide a risk-free learning environment of the clinical knowledge and skills. Additionally, for added security of the audio of case, they are all encrypted and stored in the SD card.