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IMPROVEMENT OF PHYSIOLOGICAL DATA COLLECTION BY IMPROVING SENSOR ACCURACY BASED ON THE SENSOR LOCATION
Abstract
Heart rate (HR) is a fundamental physiological parameter that reflects cardiovascular health and fitness levels. Accurate HR monitoring is essential for diagnosing medical conditions, guiding physical training, and monitoring stress and recovery. With the increased development of wearable devices, the new direction of research appeared in the field of personalized comfort based on the physiological response and closing the HVAC control loop based on the occupant-s involuntary reaction. This article reviews current HR monitoring technologies, evaluates their precision, and examines the effects of technology used, subject-s skin tone and sensor position to obtained the most accurate HR measurement. Lower reading performance are observed with the increase of skin tone on vol Luscan scale for PPG sensor. Based on the results, ECG is the best sensor that can be used in the field compared with PPG sensor, but there are improvements that can increase the PPG sensor performance by using twisted wristband mode or by increasing the LED intensity with reduced battery life as a drawback.
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