作者： Wara T Samuel , Orovwode E Hope , A Jinadu , Agbetuyi A Felix , Adoghe U Anthony
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摘要: Heart related issues have been so common according to medical research; the young and aged people are mostly affected. Electronic diagnosis has made a great impact in solving heart related issues. However, the cost for acquiring stethoscope and electrocardiographs is often expensive. This simple, low cost microcontroller based heartbeat rate measuring device was developed using a reverse engineering technique. A five volts power supply was developed and used to power a sensor arrangement. The sensor comprised of an infrared emitting diode and a photodiode. An amplifier unit was added to boost the signal coming from the sensor after which the signal was sent to a microcontroller. The result using the developed device was found to be satisfactory at 73.69 bpm average measurement while the polar sonic standard device gave an average reading 74.23 bpm. A positive strong correlation of 0.907 was …