Title :
A portable device for alertness detection
Author :
Khalifa, K.B. ; Bedoui, M.H. ; Raytchev, R. ; Dogui, M.
Author_Institution :
Electron. & Micro-Electron. Lab., Fac. of Sci. of Monastir, Tunisia
Abstract :
The authors´ aim is to conceive a tool that permits to characterize the levels of vigilance of vehicle drivers by recording in real time the physiological signal variation. The adopted way consists in developing a portable device composed of two parts: the first is analogical for signal shaping and the second is a numerical part. The latter is built up around a DSP (TMS320C31) which ensures signal acquisition from analogue/digital converters, storage, real time treatment and display decision. In this report the authors have implemented an algorithm that permits the treatment and detection of hypovigilance detection. They are currently studying the implementation of a decision algorithm, according to a database of 12 files of 24 hour-EEG registered in volunteers. The authors are studying variations of alpha, beta, theta and delta waves of the EEG in order to define decision levels about transitions of a vigilance state to another
Keywords :
analogue-digital conversion; biomedical equipment; digital signal processing chips; electroencephalography; medical signal detection; psychology; vehicles; 24 h; 24 hour-EEG; TMS320C31 DSP; alertness detection; alpha; beta; decision algorithm; delta waves; hypovigilance detection; physiological signal variation; portable device; signal shaping; theta; vehicle drivers; vigilance state transitions; volunteers; Biophysics; Data mining; Digital signal processing; Electroencephalography; Frequency; Laboratories; Physiology; Signal analysis; Spectral analysis; Vehicle driving;
Conference_Titel :
Microtechnologies in Medicine and Biology, 1st Annual International, Conference On. 2000
Conference_Location :
Lyon
Print_ISBN :
0-7803-6603-4
DOI :
10.1109/MMB.2000.893852
