Stethoscopes are a vital diagnostic tool in the medical field. Nowadays, doctors frequently use conventional stethoscopes since they are less expensive than electronic ones. However the amplification and recording capabilities of a traditional stethoscope are constrained. Therefore, electronic stethoscopes, which are non-invasive, inexpensive, and widely available diagnostic tool that can provide valuable information about the heart's health have been created to address this issue.
Design a cost-effective and simple electronic stethoscope apply in ausculation teaching with features: amplify heart sound, record heart sound, support in ausculation.
In this study, a low-cost electronic stethoscope with a hearing output jack and real-time cardiac sound realization based on the Arduino UNO R3 is presented. To enable the connection between the stethoscope and the laptop, a Bluetooth module was used. With Excel, the heart sound signal can be stored and displayed. It also activates additional processing to determine heart rate.
Basic understanding about biological characteristics of heart sound
Electronic stethoscope: signal conditioning, analog front end designs, transmission circuit
Software: TINA - TI simulation tool, Altium Designer, Arduino IDE
2. Design and Implementation of A Low-cost and Real Time Electronic Stethoscope