DRIVING SUPPORT DEVICE AND DRIVING SUPPORT METHOD

摘要

A driving support device which more appropriately manages the necessity of a driving support related to collision avoidance and which effectively restrains unnecessary activation of the driving support is disclosed. The driving support device performs a collision avoidance support on a vehicle (10) relative to a leading vehicle (60) present in a travelling direction of the vehicle (10), based on a time-to-collision Ta as a time that the vehicle (10) takes to collide with the leading vehicle (60). A lateral change amount calculation portion (23) detects a relative lateral velocity Vy, which is a relative time-dependent change amount between the vehicle (10) and the leading vehicle (60). A storage portion (40) stores therein a steering time T1, which is a time required for the vehicle (10) to avoid the leading vehicle (60) by steering. The storage portion (40) stores therein an activation threshold TH1, which is a threshold to determine activation of the driving support based on the relative lateral velocity Vy. When a relative lateral velocity Vy at a time when the time-to-collision Ta is the steering time T1 or more is the activation threshold TH1 or more, a support management portion (50) restrains the activation of the driving support.

主权项

1. A driving support device that performs a driving support on a vehicle to avoid collision with an object present in a travelling direction of the vehicle based on a time-to-collision as a time until the vehicle and the object collide with each other, the driving support device comprising:
a lateral change detection portion configured to detect a lateral relative time-dependent change amount between the vehicle and the object in a lateral direction perpendicular to the travelling direction of the vehicle; a first storage portion in which a steering time is stored as a time required for the vehicle to avoid the object by steering; a second storage portion in which an activation threshold is stored as a threshold used to determine whether activation of the driving support is performed based on the lateral relative time-dependent change amount detected by the lateral change detection portion; and a support management portion configured to restrain the activation of the driving support at a time when the lateral relative time-dependent change amount detected when the time-to-collision is the steering time or more is the activation threshold or more.