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US 7,116,234 B2Granted
Drowsiness detecting device and waking device operatively connected with the same
AssigneeJapan Science and Technology Agency
InventorKaneo Mohri
Life of this patent
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Abstract
A prompt, accurate and highly practical drowsiness detecting device and a waking device operatively connected with the same are provided. Drowsiness of a vehicle driver or the like is detected to wake him/her up to prevent the drowsiness from causing an accident. A waveform of blinking is detected by a stress-impedance effect sensor head (1) positioned on a temple bow of a glasses frame in the vicinity of his/her temple, and the drowsiness is determined by a microcomputer (2). Waking him/her up is accomplished by a milligauss AC magnetic field generator (4).
Claims3
A drowsiness detecting and waking device comprising:
- (a) a high-sensitivity stress sensor combining stress-impedance effect of an amorphous magnetostrictive thin wire and a CMOS multivibrator circuit attached to a temple bow of a glasses frame at a position thereof in the vicinity of a temple of a user;
- (b) a microcomputer that detects a blinking motion of eyelids of the user from information supplied from the high-sensitivity stress sensor and determines the drowsiness of the user on the basis of the detected information;
- and
- (c) a milligauss ultra-low frequency AC magnetic field generator driven on the basis of a drowsiness signal from the microcomputer, wherein a magnetic field generated by the milligauss ultra-low frequency AC magnetic field generator is applied to the brain of the user.
1 more element
Dependencies are inferred from the claim text.