Design and Implementation of A Low Cost Heartbeat Meter using Vibration Sensor, ATmega 16 Microcontroller, and Android Based Smartphone

Measurement of heartbeat is very important to know the pathological condition of a person. Heartbeat can also indicate that a person is at high risk of heart disease. This paper describes on development of a prototype of heartbeat meter using DFR0052 vibration sensor, ATmega 16 microcontroller, and android based smartphone. It provides a real time heartbeat calculation and gives an alert if an anomaly occurs in the heartbeat. A vibration sensor which placed at the certain position will detect the heartbeat and send the data into the microcontroller. Furthermore, the heartbeat data is delivered to and displayed in an android based smartphone via bluetooth module connected to microcontroller output. The experimental results show that the proposed heartbeat meter is a good accuracy compared to the commercial heartbeat meter so called pulse oximeter. The average of error percentage is approximately 0.69 %.