US 11,807,246 B2
Drowsiness sign notification system and drowsiness sign notification method
Kaori Sakai, Nagoya (JP); Takaaki Ito, Tokyo-to (JP); Tetsu Yajima, Nagoya (JP); Koichiro Yamauchi, Tokyo-to (JP); Masataka Sano, Tokyo-to (JP); and Takuya Sakata, Tokyo-to (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP); and CMC CORPORATION, Nagoya (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP); and CMC CORPORATION, Nagoya (JP)
Filed on Jun. 30, 2021, as Appl. No. 17/363,180.
Claims priority of application No. 2020-114154 (KE), filed on Jul. 1, 2020.
Prior Publication US 2022/0001875 A1, Jan. 6, 2022
Int. Cl. B60W 40/08 (2012.01); G01C 21/36 (2006.01); B60W 50/14 (2020.01); B60W 60/00 (2020.01)
CPC B60W 40/08 (2013.01) [B60W 50/14 (2013.01); B60W 60/0015 (2020.02); G01C 21/3685 (2013.01); B60W 2040/0827 (2013.01); B60W 2540/229 (2020.02)] 5 Claims
OG exemplary drawing
 
1. A drowsiness sign notification system applied to a vehicle,
the drowsiness sign notification system comprising:
a driver monitor configured to detect a driver state being a state of a driver of the vehicle; and
a controller configured to execute:
a drowsiness sign determination process that determines whether or not the driver shows a drowsiness sign based on the driver state; and
rest area informing process that informs the driver of a rest area, when it is determined that the driver shows the drowsiness sign and an activation condition is satisfied, wherein
a branch point is a position at which a target route of the vehicle branches from a road on which the vehicle is currently traveling,
a first distance is a distance from a current position of the vehicle to the rest area,
a second distance is a distance from the current position to the branch point,
a third distance is a distance between the rest area and the branch point, and
the activation condition of the rest area informing process includes that the second distance is larger than the first distance and the third distance is equal to or larger than a predetermined distance.