Dozing alert apparatus
AssigneeDenso Corporation
InventorsAtsuhiro DOI, Mitsutoshi NAGATA
Life of this patent
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Abstract
A drowsiness level of a driver in a vehicle is determined. A preliminary alert is performed in response to that the drowsiness level is higher than an alert threshold value. A main alert is performed to prompt the driver to wake up from drowsiness as necessary after the preliminary alert. In response to that a predetermined response operation by the driver is detected within a predetermined time after the preliminary alert, the alert threshold value is changed to be higher.
Claims11
A dozing alert apparatus mounted on a vehicle for preventing a driver from falling asleep, comprising:
- a drowsiness level determination unit configured to determine a drowsiness level of the driver;
- a preliminary alert unit configured to perform a preliminary alert in response to that the drowsiness level is higher than an alert threshold value based on comparing the drowsiness level determined by the drowsiness level determination unit with an alert threshold value;
- an alert unit configured to perform a main alert that prompts the driver to wake up from drowsiness as necessary after the preliminary alert performed by the preliminary alert unit;
- a response detection unit configured to detect that the driver has performed a predetermined response operation within a preset time after the preliminary alert is performed by the preliminary alert unit;
- and
- a threshold value change unit configured to change the alert threshold value to be higher in response to that the predetermined response operation is detected by the response detection unit.
A dozing alert apparatus mounted on a vehicle for preventing a driver from falling asleep, comprising:
- one or more computers configured
- to determine a drowsiness level of the driver;
- to perform a preliminary alert in response to that the drowsiness level is higher than an alert threshold value based on comparing the determined drowsiness level with an alert threshold value;
- to perform a main alert that prompts the driver to wake up from drowsiness as necessary after the preliminary alert is performed;
- to detect that the driver has performed a predetermined response operation within a preset time after the preliminary alert is performed;
- and
- to change the alert threshold value to be higher in response to that the predetermined response operation is detected.
Dependencies are inferred from the claim text.