WARNING DEVICE

摘要

A warning device includes: a host vehicle information acquisition unit; a moving object information acquisition unit that acquires moving object information around the host vehicle; an intersection determination unit that determines whether a course of the host vehicle and a course of the moving object intersect; a distance calculation unit that calculates a distance from the host vehicle to an intersection position; an estimated crossing-time calculation unit that calculates a time that elapses before the moving object arrives at the intersection position; a threshold setting unit; and a warning unit that alerts a driver when the time is smaller than a threshold, wherein the threshold is set larger as the distance becomes larger, and is set larger when the host vehicle speed vehicle is equal to or lower than the predetermined speed than when the host vehicle speed is higher.

主权项

1. A warning device comprising:
a host vehicle information acquisition unit configured to acquire host vehicle information that includes a traveling direction and a vehicle speed of a host vehicle; a moving object information acquisition unit configured to acquire moving object information that includes a position, a moving direction, and a moving speed of a moving object around the host vehicle; an intersection determination unit configured to determine whether a course of the host vehicle and a course of the moving object intersect, based on the host vehicle information and the moving object information; a distance calculation unit configured to calculate an intersection position distance when the intersection determination unit determines that the course of the host vehicle and the course of the moving object intersect, the intersection position distance being a distance from the host vehicle to an intersection position at which the course of the host vehicle and course of the moving object intersect; an estimated crossing-time calculation unit configured to calculate an estimated crossing-time based on the intersection position and the moving object information, the estimated crossing-time being a time that elapses before the moving object arrives at the intersection position; a vehicle speed determination unit configured to determine whether the vehicle speed of the host vehicle is equal to or lower than a pre-set predetermined speed based on the host vehicle information; a threshold setting unit configured to set a threshold based on the intersection position distance and a determination result of the vehicle speed determination unit; and a warning unit configured to output a warning that alerts a driver of the host vehicle to the moving object when the estimated crossing-time is smaller than the threshold, wherein the threshold setting unit is configured to set the threshold larger as the intersection position distance becomes larger, and set the threshold larger when the vehicle speed of the host vehicle is determined equal to or lower than the predetermined speed than when the vehicle speed of the host vehicle is determined higher than the predetermined speed.