Arduino Project - Bluetooth powered Wearable Electonic Stethoscope Part I

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1

This project aims at designing a wearable digital stethoscope which is able to do a long-distance monitoring especially for the patient suffering from chronic diseases. The stethoscope supports the transmission of data to personal computer through wireless transmitter, after which the signal received can be stored up and be replayed back to physicians for later diagnosis. This project will also give a brief idea on self-screening property for the newly designed stethoscope for auto disease preliminary assessment.

Hardware and Software

The hardware device can be classified into different parts;

  1. Electret condenser microphone

  2. Amplification module

  3. Low pass filtering module

  4. Microcontroller

  5. Wireless transmission module.

The acoustic signal can firstly be detected by condenser microphone (WM-61A). The signal is then be amplified by the amplification module based on a low voltage audio power amplifier LM386. A second order active filter is used for further signal filtering. The analog to digital conversion is achieved by using microcontroller Arduino. The digital acoustic signal is transmitted wirelessly to computer by using wireless transmission module Bluetooth . The final stage is to use signal processing software Labview to analyze and store the signal.

Demonstration click here~

Detailed information click here

2

Cool! Are you a college student? What would be nice is to have arduino record the readings on an sd card so the person can monitor self and upload the file to a server. No need to involve labview with patient, just the doctors.

3

Please stop cross-posting.