DIGITAL ELECTRONIC STETHOSCOPE

My dearest Final Year Project present on 21th of April 2011:

ABSTRACT:

The stethoscope (from Greek, stethos - chest and skope – examination) is an acoustic medical device for auscultation or listen the internal sound of a body. It is often used to lung and heart sound. As knows this device is use in the area the lightly quiet, it is because it needs to be heard by the doctor to check the heart beat sounds.

From the previous stethoscope the one end of the stethoscope is also known as a diaphragm, a vibrating membrane designed to pick up sound. The diaphragm is connected to a hollow, air-filled tube. That tube splits in two and leads to earpieces, which the doctor wears. The stethoscope can be placed against the patient's chest to listen to her breath or heartbeat, or others are against the lower abdomen to listen to the intestines.

The upgrading that use for this device is to becomes the Digital Electronic Stethoscope. This project will not use the earpieces as a sound detection, but the condenser sensor as a sensor that will give counting of heart beats. The microscope stethoscope is to read or detect the signal heart beats sound or also known as auscultation it is a small input voltage, from this situation it will give the vibration at the diaphragm, then the condenser sensor will digitization and digital processing on it. These make noise reduction, filtering and amplification when enter the circuits to produce the output result after compile with the software programming that is arduino instruction.

The goal for this basic digital stethoscope is to have it retain the look and feel of acoustic stethoscope but to improve listening performance. It can be uses anywhere and also can improve the counting procedure to detect the situation for the heart beats either at tachycardia, bicardia or also at normal heart beats count in the minutes.