| Summary: | 碩士 === 國立聯合大學 === 電機工程學系碩士班 === 102 === During the process of heart and lungs, there are unique physiological
heart and lung sounds which are collected clinically for doctors to judge
if related diseases are affiliated.
Electronic stethoscope with Bluetooth transmission function was
built in this study. The device allows the the heart and lung sounds to be
converted to electric signals by condenser microphone. The sounds not
only can be collected through the amplification and filter circuits but also
recorded when connecting the audio cables to computers. Furthermore,
the sound data can be submitted to computers with bluetooth transmission
or saved in SD card, and can be applied for disease analysis within the
man-machine interface.
In addition, the filter circuits allows users to alter from heart to lung
sound based on their needs. When connecting the audio cables to the
computer, the sounds can be recorded and the recorded sounds can also
be heard promptly. This function remits greatly the pain of the doctors'
from long time use of the traditional stethoscope and improves the
disadvantage of not being able to record the heart and lung sounds from
the patients.
Bluetooth transmission allows users to save data wirelessly. Labview
man-machine interface was developed for sound recording and data
analysis that is based on empirical mode decomposition and FFT to
identify the diseases, avoiding the possibility of the doctor’s misjudge
from subjective factors.
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