Development of A Respiration Rate Meter - A Low-Cost Design Approach

Abstract

Measurement of physiological parameters like respiration rate is crucial in field of medicine. Respiration rate can indicate the state of rhythmic behaviour of heart and proper gaseous exchange in blood. As per Medical research, respiratory rate is regarded as the marker of pulmonary dysfunction. Respiration rate meters are used in measuring CO 2 in expired air and in apnea detectors. It is also used in daily physiological tests like stress-o-meter for assessing ones level of stress that he/she can perceive in life after monitoring respiration rate, pulse rate and heart rate. This paper shed lights on the development of a lowcost respiration rate meter using infrared sensing and associated digital electronic circuitry. The proposed device is able to measure respiration rate in the range of 0-999 respirations/minute.