Patent ID: 11932241
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A driving assist system that assists driving of a vehicle, the driving assist system comprising:
a memory configured to store driving environment information indicating a driving environment for the vehicle; and
a processor configured to execute driving assist control including at least one of deceleration control and steering control for avoiding a collision with a target ahead of the vehicle based on the driving environment information, wherein
the driving assist control operates when the target exists within an assist area and does not operate when the target exists outside the assist area,
a roadway area in which the vehicle exists is an area between a first roadway boundary located on a first side as viewed from the vehicle and a second roadway boundary located on a second side opposite to the first side as viewed from the vehicle,
a crossing target is the target that crosses the roadway area ahead of the vehicle from the first side toward the second side,
the processor is further configured to divide the assist area for the crossing target into a plurality of divided assist areas based on a direction of movement of the crossing target,
the plurality of divided assist areas include a first assist area located on the first side as viewed from the vehicle and a second assist area located on the second side as viewed from the vehicle,
the processor is further configured to determine in which of the plurality of divided assist areas the crossing target exists, and to execute the driving assist control with a control strength according to a result of the determination, and
when the crossing target exists in the second assist area of the roadway area, the processor decreases the control strength of the driving assist control as compared with a case where the crossing target exists in the first assist area based on the direction of movement of the crossing target from the first side towards the second side, wherein
the control strength of the driving assist control includes a magnitude of an assist control amount including a deceleration in the deceleration control and a steering angle in the steering control,
the assist control amount is expressed as a function of a relative relationship parameter including a relative position and a relative speed between the vehicle and the target, and
decreasing the control strength includes reducing the assist control amount corresponding to the same relative relationship parameter.