BENEFIT of the PROJECT

Figure 1

                                                     

Based on the objective above, this project study will be develops of analogue stethoscope to electronic stethoscope. Most of the existing stethoscopes nowadays are manually use by doctor, medical assistant and so on. It’s because the analogue stethoscope the result will get not accurate compared used the digital stethoscope.  Therefore, in the study of this project will develop an electronic stethoscope to contribute to the convenience of users and technological advancements.

            Electronic stethoscope also can enhance the Medical Equipment to reduce Human user and noise surrounding because the analogue stethoscope have more noise and the electronic stethoscope the user like doctor can listen to life with ease and also more comfortable and they get more accurate result when they use the electronic stethoscope.

            This electronic stethoscope is easy to bring anywhere because it’s design to be friendly and nice to user because it’s in pocket size compared to analogue stethoscope that have long rubber tube to carry anywhere they go. They also no need to wear ear plug because the electronic stethoscope has been replace with a suitable sensor like Condenser Sensor.

Electronic Stethoscope can used at home to check out body or children are in the good condition or not base on the heart beat of the lung and heart. It's also can use by untrained and non-technical person and can detect the heart beats with accurate result for the sound of heart beats at many places with high sound of noise surrounding.

ARDUINO SOFTWARE

       For this project i use Arduino Software for display the output data or result, signal input enter into the microcontroller of arduino that is at atmega 328P to run the software program that being initialize to get the output for display result at the LCD monitor.

      Arduino is an open-source single-board microcontroller; the hardware consists of a simple open hardware design for the arduino board with an Atmel AVR processor and on-board I/O support. The software consists of a standard programming language and the boot loader that runs on the board. arduino hardware is programmed using a Wiring based language (syntax + libraries), similar to C++ with some simplifications and modifications, and a Processing-based IDE.    

Arduino Software

A screenshot of the Arduino IDE showing a

simple example program.

Developer(s): Arduino Software

 Stable release: 022 / December 24, 2010; 3 months ago

 Written in:  Java

Operating system: Cross-platform

Type:  Integrated development environment

License: LGPL or GPL license

Website: http://www.arduino.cc/en/

Figure 1: Arduino Screenshot Software

         The arduino duemilanove (2009) is a microcontroller board based on the atmega168 (datasheet) or atmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as pulse width modulator, PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.

Arduino Duemilanove

         This is the microcontroller board that is used to run the software program of arduino when it attached to the power supply laptop with 5 volt maximum. Then after uploading the program at atmega 328p, this ic can stand alone with their own circuit to run the software of the programming with hardware for this project, Electronic Stethoscope.

As we know, nowadays the used of stethoscope is already familiar always with the doctors. This medical device that can produce the auscultation result on it give the result to the doctor to hear the heart beat sound either from lung or heart. This device not only can give the sound of normal patient but also can detect the irregularly sound of heart that is in others conditions such as pain, bleeding and so on.

The normal rate for the heart beat per minute is 60 bpm while the dangerous heart beat is 120 bpm. This device is only for monitoring and therapy, because it only gives the result base on the detection of sound effect. So the main problem that it been change from the old counting heart beat by the doctor for 60 second that come from his or her watches, to get the heart beat per minute from it patient is not suitable at the surrounding that to noises.

This new design and idea can give a lot of advantage to the doctor to get the heart beat of their patient. Not only can give an accurate result base on the detection of the sensor of sound the microphone stethoscope that can convert the sound of heart beat to digital output.

This is the special product that can give the result for counting that is more relay able compare with human ears. This device also can be used at home to check out body or children are in the good condition or not base on the heart beat of the lung and heart. It is the first monitoring device that can make sure use to maintain our healthier of the body.

OBJECTIVE

Main objectives for this project are:

• Upgrading the Monitoring System for existing method (analogue type) to modern method (digital approach)
• Enhance the Medical Equipment to reduce Human user and noise surrounding
• To provide the opportunity for student to apply and integrate the knowledge
• The philosophy for this project is to Study of Medical Electronic Device Industry and how does it function and detect the signal.

    

These objectives are achieved and the application is working with the desired output.

PROBLEM STATEMENT

         The sound of environment surrounding is the main problem for conventional stethoscope 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 counting of heart beats 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 analogue voltage needs to be conditioned and then converted into a digital by using an audio analogue-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 in the specific way. The circuit for this project uses op-amps to greatly amplify a standard sound of heartbeat, and also includes a low pass filter with voltage comparator to remove the background noise from surrounding areas.