US 12,269,477 B2
Vehicle management system
Tetsuya Matsuhisa, Wako (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Jul. 27, 2022, as Appl. No. 17/874,695.
Claims priority of application No. 2021-126087 (JP), filed on Jul. 30, 2021.
Prior Publication US 2023/0033508 A1, Feb. 2, 2023
Int. Cl. G05D 1/00 (2024.01); B60W 40/064 (2012.01); B60W 40/068 (2012.01)
CPC B60W 40/064 (2013.01) [B60W 40/068 (2013.01); G05D 1/0088 (2013.01); B60W 2520/26 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A vehicle management system managing autonomous vehicles, the vehicle management system comprising a processor that includes:
a position acquisition unit that acquires position information of a traveling position of each of the autonomous vehicles;
a measurement unit that calculates, as a slip index value indicating slippiness of each of the autonomous vehicles on the traveling position, a slip rate of each of the autonomous vehicles on the traveling position or a friction coefficient of a road surface, the friction coefficient of the road surface being calculated from the slip rate;
a map calculation unit that calculates, based on the traveling position and the slip index value calculated in a plurality of times of traveling performed by at least one of the autonomous vehicles, a slip map in which each of a plurality of positions on a map configuring a traveling route of the corresponding autonomous vehicle and a statistical value of the slip index values that is calculated on each of the plurality of positions are associated; and
a vehicle extraction unit that extracts, as a target vehicle, an autonomous vehicle of the autonomous vehicles having, at least in a part of the traveling route, an outlier of the slip index value measured with respect to the statistical value indicated in the slip map.