Collision mitigation apparatus

Patent metadata

Field	Value
Publication number	US-9487217-B2
Application number	US-201414282301-A
Country	US
Kind code	B2
Filing date	May 20, 2014
Priority date	May 22, 2013
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

A collision mitigation apparatus is provided, which is installed in a vehicle and mitigates damage to the vehicle in occurrence of a collision. The apparatus includes an activation control section which detects an object positioned around the vehicle, and activates a collision mitigation part for mitigating damage to the vehicle in occurrence of a collision if a positional relationship between the vehicle and the object meets a predetermined activation condition, a type determining section which determines type of the object, the type being any one of a vehicle, a pedestrian and a roadside object, and an activation condition changing section which consolidates the activation condition compared to a case where the type of the object is not a roadside object, if the type of the object is a roadside object.

First claim

What is claimed is:

1. A collision mitigation apparatus, which is installed in a vehicle and mitigates damage to the vehicle in occurrence of a collision, comprising:
a collision mitigation controller that detects an object positioned around the vehicle, that activates a collision mitigation part for mitigating damage to the vehicle in occurrence of a collision if a positional relationship between the vehicle and the object meets a predetermined activation condition,
that determines a type of the object, the type being any one of a vehicle, a pedestrian and a roadside object, and
that strictly sets the activation condition compared to a case where the type of the object is not a roadside object, if the type of the object is a roadside object, wherein
in a case where the type of the object is the roadside object, the collision mitigation controller determines whether or not the roadside object is a continuous roadside object based on recognition of a series of targets that are present along a traveling direction of the vehicle, and
in a case where the roadside object is the continuous roadside object, the collision mitigation controller sets the activation condition more strictly than in a case where the roadside object that is not the continuous roadside object.

2. The collision mitigation apparatus according to claim 1 , wherein
the collision mitigation controller compares a collision time up to occurrence of a collision between the vehicle and the object, with an activation reference time which is preset as a timing for performing control for avoiding a collision between the vehicle and the object, and determines, according to the result of the comparison, whether or not the collision mitigation part should be activated, and
in the case where the type of the object is the roadside object, the collision mitigation controller sets the activation reference time to a smaller value than in the case where the type of the object is not the roadside object.

3. The collision mitigation apparatus according to claim 1 , wherein
the collision mitigation controller determines that the object does not correspond to any one of a vehicle, a pedestrian and a roadside object, and
in the case where the type of the object is the roadside object, the collision mitigation controller strictly sets the activation condition compared to a case where the type of the object is not available.

4. The collision mitigation apparatus according to claim 1 , wherein the collision mitigation controller recognizes a shape of a road on which the vehicle travels,
and strictly sets the activation condition if the road is in a curved shape.

Assignees

• Denso Corp
• Toyota Motor Co Ltd

Inventors

• Tsuchida Norio
• Tsuchida Jun
• Shimizu Masayuki

Classifications

• B60T2201/022

  Collision avoidance systems · CPC title

• B60W2554/801

  Lateral distance · CPC title

• B60W2552/30

  Road curve radius · CPC title

• G01S13/931

  of land vehicles · CPC title

• B60W2520/28

  Wheel speed · CPC title