User friendly electrocardiogram - hardware design/ Mohd Fuad Hamzah and Khairuddin Salehuddin

Electrocardiograph is a medical instrument used to obtains and records the time-variant voltage produced by the myocardium during the cardiac cycle called electrocardiogram (EGG). It records the sequence of electrical activation of the atrias and ventricles of the heart and provides a mean for recognizing disturbances in the normal sequence. Unfortunately, this important instrument is widely used only in the medical center as nobody else except doctors can analyze the heart rhythm waveform recorded by the instrument. On top of that, the development of electrocardiograph has led to a very complicated and fully computerized instrument being used nowadays which cost hundred thousands over dollars. The objective of this project is to design the hardware of an electrocardiograph which is low in cost but with tolerable accuracy and can be used in conjunction with personal computers. The computer screen will displays the captured EGG of the subject under investigation. The hardware design consists of two major parts; the sensor module and the analog to digital converter (ADC) module. The sensor module holds the transducer.