A Portable ECG Monitor Based On Embedded System Technology

Electrocardiogram is an invaluable tool in detecting a problem associated with the heart. There are various methods to diagnose heart disease, such as electrocardiogram, ultrasound, MRI, CT and so on. Among these methods, ECG diagnosis has the advantage of convenience and low cost so that it can be used in wide area. This device is capable of measuring ECG signal and displaying it in beats per minute. Moreover most of the cardiac deaths occur outside the hospital. ECG is the best way to measure and diagnose abnormal rhythms of the heart. This project aims at the design of the hardware circuit for ECG acquisition and converting the ECG signal into pulses, so that beats per minute is displayed. From the analysis of various persons ECG signal, the mean value was taken to be the range, if the limit of the range is exceeded or degraded then the abnormality is displayed, else it is displayed as normal signal. The converted pulses is given as input to the microcontroller, it has an inbuilt analog to digital converter. The converted digital value is stored in a register. The signal and the pulse rate are analyzed. If there is any abnormality in the signal then LCD displays abnormal and it is sent as message to the mobile with the help of microcontroller.