Abstract
Driver drowsiness is one of main causes of road accidents worldwide and has drawn attentions of automobile industries, government organisations as well as researcher scientists and engineers. A non-contact Doppler radar technique for monitoring driver drowsiness is presented. On the basis of unobtrusive Doppler measurement of the respiratory and heart signals, the statistical analysis shows that there is a consistent dependency of the respiratory depth on drowsiness level of drivers. It shows that the non-contact Doppler radar technique can provide an effective approach to monitor driver drowsiness.
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