US 12,330,658 B2
Identifying an origin of abnormal driving behavior for improved vehicle operation
Seyhan Ucar, Mountain View, CA (US); and Ryan Mercer, Mountain View, CA (US)
Filed by Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US)
Filed on Apr. 20, 2021, as Appl. No. 17/235,607.
Prior Publication US 2022/0332324 A1, Oct. 20, 2022
Int. Cl. B60W 40/09 (2012.01); B60W 40/08 (2012.01); B60W 50/08 (2020.01)
CPC B60W 40/09 (2013.01) [B60W 50/08 (2013.01); B60W 2040/0809 (2013.01); B60W 2540/22 (2013.01); B60W 2540/229 (2020.02)] 20 Claims
OG exemplary drawing
 
1. A method for identifying an origin of abnormal driving behavior for improved vehicle operation, the method comprising:
identifying an abnormal driving behavior of a driver of a vehicle at a time T;
identifying a set of events that occurred within a predetermined time Δt before time T;
chronologically ordering the set of events to construct a happens-before relationship diagram that describes a chronological order of the set of events that leads to the abnormal driving behavior;
executing a cause-and-effect analysis on the set of events to determine one or more events from the set of events that caused the abnormal driving behavior, wherein the cause-and-effect analysis includes analyzing the happens-before relationship diagram to determine the origin that caused the abnormal driving behavior, wherein the cause-and-effect analysis is executed by onboard vehicle computers of one or more vehicles that are members of a vehicular micro cloud; and
executing a strategy by the vehicular micro cloud to reduce the abnormal driving behavior so that vehicle operation is improved, wherein the strategy is selected from a set of pre-approved strategies based on the execution of a set of digital twin simulations.