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Alertness Monitoring System for Vehicle Drivers using Physiological Signals
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Author(s): Anwesha Sengupta (Indian Institute of Technology Kharagpur, India), Anjith George (Indian Institute of Technology Kharagpur, India), Anirban Dasgupta (Indian Institute of Technology Kharagpur, India), Aritra Chaudhuri (Indian Institute of Technology Kharagpur, India), Bibek Kabi (Indian Institute of Technology Kharagpur, India)and Aurobinda Routray (Indian Institute of Technology Kharagpur, India)
Copyright: 2016
Pages: 39
Source title:
Handbook of Research on Emerging Innovations in Rail Transportation Engineering
Source Author(s)/Editor(s): B. Umesh Rai (Chennai Metro Rail Limited, India)
DOI: 10.4018/978-1-5225-0084-1.ch013
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Abstract
The present chapter deals with the development of a robust real-time embedded system which can detect the level of drowsiness in automotive and locomotive drivers based on ocular images and speech signals of the driver. The system has been cross-validated using Electroencephalogram (EEG) as well as Psychomotor response tests. A ratio based on eyelid closure rates called PERcentage of eyelid CLOSure (PERCLOS) using Principal Component Analysis (PCA) and Support Vector Machine (SVM) is employed to determine the state of drowsiness. Besides, the voiced-to-unvoiced speech ratio has also been used. Source localization and synchronization of EEG signals have been employed for detection of various brain stages during various stages of fatigue and cross-validating the algorithms based in image and speech data. The synchronization has been represented in terms of a complex network and the parameters of the network have been used to trace the change in fatigue of sleep-deprived subjects. In addition, subjective feedback has also been obtained.
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