Description: Determination of heart rate is still using the manual stethoscope, in order to facilitate the acquisition of the heart rate, we decided to use the Mega16 microcontroller-based chip manufacturing a simple easy-to-use portable heart rate monitor, automatic meter recorded the number of beats and digital visual image display . To this end, the realization of the heart rate monitor features depends mainly on the effective and stable signal acquisition mode, we have access to information that the main heart rate collected in two ways: through a pair of red light-emitting diodes and through the piezoelectric ceramic chip to achieve.
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