초록 ▼

A drowsiness alarm system for a vehicle detects and signals that the vehicle driver is drowsy on the basis of the duration during which no steering adjustments are made and the magnitude and speed of abrupt steering adjustments immediately following the non-steering period. Parameters compared to th

A drowsiness alarm system for a vehicle detects and signals that the vehicle driver is drowsy on the basis of the duration during which no steering adjustments are made and the magnitude and speed of abrupt steering adjustments immediately following the non-steering period. Parameters compared to the magnitude and speed of the abrupt steering adjustments in order to recognize steering behavior reflecting drowsiness are adjusted in accordance with the duration of the non-steering period.

대표청구항 ▼

A method for detecting driver drowsiness in an automotive vehicle, comprising the steps of: (a) monitoring a position of a vehicular steering wheel and signalling direction and magnitude of change in the position of the steering wheel; (b) measuring a first duration of a period of time during which

A method for detecting driver drowsiness in an automotive vehicle, comprising the steps of: (a) monitoring a position of a vehicular steering wheel and signalling direction and magnitude of change in the position of the steering wheel; (b) measuring a first duration of a period of time during which no noticeable changes in the position of the steering wheel are monitored; (c) determining whether said first duration of period of time measured in said step (b) is longer than any one of a plurality of given periods of time; (d) if said first duration is longer than one of said time periods, selecting one of a plurality of sets of predetermined conditions in accordance with said first duration; (e) determining whether noticeable changes in the position of the steering wheel immediately following said first duration satisfy said selected one of said plurality of sets of predetermined conditions; and (f) activating an alarm device indicating driver drowsiness when said first duration is determined to be longer than one of said plurality of given periods of time in said step (c) and said noticeable changes in the position of the steering wheel determined in said step (e) satisfy said selected one of said sets of predetermined conditions selected in said step (d).