On the basis of analyzing on traditional stethoscope limitations and the related research on electronic stethoscope

design a portable and low power consumption electronic stethoscope. This design is based on capacitive type sensor and use STM32F405RGT6 as master control chip. It implements many functions such as real-time heart and lung sounds auscultation in three modes

recording and playback

auscultation volume control

wireless transmission

combined with Bluetooth

OLED

SD card storage technologies. The whole system has characteristics of fully functional

high portability

lower power consumption

and it is beneficial to promote the use of electronic stethoscope in hospital

at the same time

the system can also be applied to auscultate teaching and other occasions.