Mubashir_ul_Hasan, Zaryab Qazi, Sander Ali
Student, (IICT) University Of Sindh Jamshoro, Sindh, Pakistan
Engr_mubashir41@yahoo.com
Student, (IICT) University Of Sindh Jamshoro, Sindh, Pakistan
Zaryabqazi@yahoo.com
Lecturer, (IICT) University Of Sindh Jamshoro, Sindh, Pakistan
Sandar.ali@usindh.edu.pk
Abstract
Direct way to diagnose the diseases is the use of stethoscope. In this paper the working and making of low cost Wireless electronic stethoscope based on RF is discussed. A condenser micro phone is connecting into its head of diaphragm which is used to capture the heart sound and change acoustic energy into electrical energy. The heart sound signal is then processed by preamplifier and amplified to achieve the high gain and filter is used to give the desired audible heart sound which is sent wirelessly using RF module at receiver side. Indeed more than one doctor can play the heart sound and can do auscultation easily. The PC connectivity is also made available so that the captured data can be sent to pc for storage purpose and software analysis using think lab. Video can be made through cam and send via internet for telemedicine consultation.
Keywords.
Electronic stethoscope, RF, Heart sound
1. Introduction
The technique of listening to internal sounds, such as the circulatory and respiratory systems, has been used for many centuries. A stethoscope is a very commonly use device. The chest piece consists of a shallow, bell-shaped piece and a clear, stiff diaphragm, which is then connected to the metal earpieces by a flexible tube. The bell is used to pick up lower frequency sounds, and the diaphragm is used for higher frequency sounds. When the chest piece is placed on the skin, vibrations within in the body are amplified by either the bell or diaphragm. These acoustic pressure waves then travel up through the tubing to the earpieces and into the listener’s ears [2]. It still requires substantial