There are some existing approaches designed and developed for measuring heart rate. At present, the recent technologies for measuring heart rate are consist of several methods using optical and electrical methods. Casually electrical method provides a bulky strap around one’s chest [7]. But the optical method requires no such strap and it can be used more effectively. Low cost heart rate measuring devices were developed using optical technology. In optical method powerful LED and Light Dependent Resister (LDR) are used to sense pulses [8]. The pulse signals are then amplified by an amplifier circuit and filtered through a band pass filter. The amplified and filtered pulse signals are sent to the microcontroller. The microcontroller checks the analog signals whether they are valid or not comparing with a standard voltage. Microcontroller counts the heart rate and displays the result in a LCD display. There exists another approach where infrared Tx and Rx are used. In that system it senses pulses, amplifies the pulses and filters pulses by a low pass filter. Finally, the pulse signal is sent to a microcontroller [9], [10]. The microcontroller also give output comparing with a reference voltage. Both the approaches give inaccurate result in many cases because analog signal of pulse varies from person to person and the approaches fail to calibrate analog signal of pulses for each person