DIGITAL ELECTRONIC STETHOSCOPE

1.1 Purpose and objective of study


1. Upgrading the Monitoring System
2. Enhance the Medical Equipment to reduce Human user
3. The counting more accurate and faster by give the result at the 7 segments as the Output Digital

1.2 The problem stated in general

The sound of environment surrounding is the main problem for this device to produce the result. The doctor could not hear the sound of heart beat if it in the noising area because the interruption will make the result become error or wrong. By changing the result into the digital output signal it will give more accurate counting for the heart beat per minute by the sound of heart on it. The analog voltage needs to be conditioned and then converted into a digital by using an audio analog-to-digital converter (ADC) or audio code. For these reasons, it is important to develop methods to estimate the reliability of such program, to ensure it will perform satisfactorily when needed the most.
and the specific way

The circuit for this project uses op-amps to greatly amplify a standard of the stethoscope, and also includes a low pass filter with voltage comparator to remove the background noise from surrounding areas.


1.3 Rationale for problem solving and methods available

Reduce the earpiece at the stethoscope then add the circuit to amplifier the result to being display at lcd monitor by using the arduino programming.

1.4 Limitation of project

1. Not display the heart beat sound wave as a result
2. Using the paperless as an option for the result.