driving aids

Abstract

A speed zone computation unit that computes a speed zone of a host vehicle having a possibility that the host vehicle will come into contact with a mobile object from a blind spot when progressing in a progressing direction; a target speed computation unit that computes a target speed of the host vehicle based on a speed zone; a driving assistance starting point computation unit that computes a driving assistance starting point determined by a state of the host vehicle at the time when a driving assistance is started; and a target speed modification unit that modifies a target speed, when the driving assistance starting point is within the speed zone, are included. The speed zone is determined by a relationship between a speed of the host vehicle, and a distance of the host vehicle with respect to a reference position in a place forming the blind spot. The driving assistance starting point is determined by the speed of the host vehicle at the time when the driving assistance is started, and the distance of the host vehicle with respect to the reference position. The target speed computation unit sets a speed lower than the speed zone in the reference position as the target speed. The target speed modification unit sets a value higher than a value computed by the target speed computation unit as a new target speed, in speed in the reference position.

Description

technical field [0001] The invention relates to a driving assistance device. Background technique [0002] As a conventional driving assistance device, there is known a device that considers an object suddenly appearing from a blind spot when entering an intersection or the like, and performs driving assistance. For example, the driving assistance device in Patent Document 1 predicts the road ahead of the host vehicle, recognizes a blind spot for the driver in the traveling direction of the host vehicle, predicts an object that may suddenly appear from the blind spot, and detects whether the object can move. If the range overlaps with the predicted course of the host vehicle, it is determined that there is a possibility of collision, and driving assistance is performed to avoid the collision. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2006-260217 [0004] However, conventional driving assistance devices perform driving assistance by using the predicted cours...

AI Technical Summary

Problems solved by technology

Therefore, conventional driving assistance devices avoid collisions by judging whether there is a collision when traveling on the current predicted road, and cannot calculate how much to reduce the speed to avoid collisions, how much to dodge to avoid collisions, etc.

In addition, the collision judgment of conventional driving assistance devices largely depends on the prediction accuracy of the vehicle's future position

Therefore, when the prediction accuracy decreases (for example, when the host vehicle is accelerating, decelerating, or steering), the accuracy of collision judgment may decrease.

In this case, the conventional driving assistance device may give the driver a sense of discomfort by performing unnecessary driving assistance or not performing driving assistance at the necessary timing.

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