Smart Shirt Respiratory Monitoring to Detect Car Driver Drowsiness

Many studies have reported method to detect car driver drowsiness by heartbeat interval signals, but it is hard record stable signals while driving in a way that does not burden the drivers. We examined whether driver’s can be detected from respiration signal. In 9 healthy subjects (seven males and two females; age, 45 ± y), respiration, electrocardiogram, acceleration were recoded for total of 2,359 min (137-468 per subject) with smart shirt biometric sensor (Hexoskin). Minute-to-minute respiratory rate, heart their variability analyzed complex demodulation. The sleepiness drivers was assessed subjective reports surrogate maker Dip & Waves, which known characteristic R-R pattern associated drowsiness. Although rate showed no significant changes Wave, increased progressively 4 before, peaked at decreased immediately thereafter. No such definite trend observed any time- or frequency domain indices variability. findings this study only show possibility smart-shirt as device also suggest may provide useful clues predict drowsiness, unique those provided