Fatigue alarm apparatus and method
A fatigue alarm apparatus having a fatigue detector, a control unit and a stimulus alarm generator is illustrated. The fatigue detector detects whether a driver is drowsy. The control unit is electrically connected to the fatigue detector and the stimulus alarm generator. When the fatigue detector detects that the driver is drowsy, the stimulus alarm generator controlled by the control unit to generate two stimulus alarms having a rest time period therebetween, and then, after an interval period elapses, the control unit determines whether an alarming procedure of generating the two stimulus alarms is to be interrupted or repeated, wherein the rest time period is less than the interval period.
1. A fatigue alarm apparatus, comprising:
a fatigue detector, detecting whether a driver is drowsy; and
a control unit, electrically connected to the fatigue detector; and
a stimulus alarm generator, electrically connected to the detector;
wherein, when the fatigue detector detects that the driver is drowsy, the stimulus alarm generator controlled by the control unit generates two stimulus alarms having a rest time period therebetween, and then, after an interval period elapses, the control unit determines whether an alarming procedure of generating the two stimulus alarms is to be interrupted or repeated, wherein the rest time period is less than the interval period;
wherein the rest time period matches a peak frequency of pre-stimulus alpha oscillations of the driver.
2. The fatigue alarm apparatus according to claim 1 , wherein data of pre-stimulus alpha oscillations of the driver, which is measured in daily life of the driver, is obtained by the fatigue alarm apparatus, and the peak frequency of the pre-stimulus alpha oscillations of the driver is determined by the data of pre-stimulus alpha oscillations of the driver.
3. The fatigue alarm apparatus according to claim 1 , wherein the alarming procedure is interrupted when a number of the alarming procedures executed reaches a specific number.
4. The fatigue alarm apparatus according to claim 1 , wherein the stimulus alarm generator comprising a light flashing unit is disposed on a top portion of a housing of the fatigue alarm apparatus, such that a flash generated by the light flashing unit is projected to ceiling of a vehicle for warning the driver and passengers.
5. The fatigue alarm apparatus according to claim 1 , wherein the stimulus alarm generator comprising a light flashing unit and a speaker is disposed on a top portion of a housing of the fatigue alarm apparatus, such that a flash generated by the light flashing unit is projected to ceiling of a vehicle for warning the driver and passengers.
6. A fatigue alarm method, comprising:
detecting whether a driver is drowsy to generate a fatigue detection result;
generating, in response to the fatigue detection result, two stimulus alarms having a rest time period therebetween, and then elapsing an interval period, wherein the rest time period is less than the interval period; and
determining whether an alarming procedure of generating the two stimulus alarms is to be interrupted or repeated;
wherein the rest time period matches a peak frequency of pre-stimulus alpha oscillations of the driver.