DRIVING ASSISTANCE DEVICE

• US 20140195141A1
• Filed: 08/10/2011
• Published: 07/10/2014
• Est. Priority Date: 08/10/2011
• Status: Abandoned Application

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Nagata, Shinichi
• Application Number:
  US14/237,477
• Publication Number:
  US 20140195141A1
• Time in Patent Office: Days
• US Class Current: 701/301
• CPC Class Codes: B60T 2210/34 Blind spots
• CPC Class Codes: B60T 7/22 initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle , or by means of contactless obstacle detectors mounted on the vehicle
• CPC Class Codes: B60W 10/184 with wheel brakes
• CPC Class Codes: B60W 2552/00 Input parameters relating to infrastructure
• CPC Class Codes: B60W 2554/00 Input parameters relating to objects
• CPC Class Codes: B60W 2554/4041 Position
• CPC Class Codes: B60W 2720/10 Longitudinal speed
• CPC Class Codes: B60W 30/09 Taking automatic action to avoid collision, e.g. braking and steering
• CPC Class Codes: B60W 30/095 Predicting travel path or likelihood of collision
• CPC Class Codes: B60W 30/0953 the prediction being responsive to vehicle dynamic parameters
• CPC Class Codes: B60W 30/0956 the prediction being responsive to traffic or environmental parameters
• CPC Class Codes: B60W 30/18154 Approaching an intersection
• CPC Class Codes: G08G 1/166 for active traffic, e.g. moving vehicles, pedestrians, bikes

Abstract

A driving assistance device includes a blind spot recognition unit that recognizes a blind spot of a driver; a mobile object information setting unit that sets mobile object information; a speed zone computation unit that computes a speed zone of the host vehicle; a brake avoidance condition computation unit that computes at least one condition of a brake avoidance condition so that the host vehicle can avoid contact with the mobile object using a brake of the host vehicle and a brake avoidance condition so that the mobile object can avoid contact with the host vehicle using a brake of the mobile object; a speed zone correction unit that corrects the speed zone, based on the brake avoidance condition computed by the brake avoidance condition computation unit; and a target speed computation unit that computes a target speed of the host vehicle based on the speed zone.

Claims

1. A driving assistance device comprising:

a blind spot recognition unit that recognizes a blind spot of a driver in a progressing direction of a host vehicle;

a mobile object information setting unit that sets mobile object information including at least an assumed speed of a mobile object, as information on the mobile object having a possibility of appearing suddenly from the blind spot;

a speed zone computation unit that computes a speed zone of the host vehicle having a possibility that the host vehicle will come into contact with the mobile object when progressing in the progressing direction, based on the mobile object information set by the mobile object information setting unit;

a brake avoidance condition computation unit that computes at least one condition of a brake avoidance condition that the host vehicle can avoid contact with the mobile object using a brake of the host vehicle and a brake avoidance condition that the mobile object can avoid contact with the host vehicle using a brake of the mobile object;

a speed zone correction unit that corrects the speed zone based on the brake avoidance condition computed by the brake avoidance condition computation unit; and

a target speed computation unit that computes a target speed of the host vehicle based on the speed zone,

wherein the speed zone computation unit computes the speed zone by computing a condition that the mobile object can pass earlier than at least the host vehicle, based on the assumed speed of the mobile object.

2. The driving assistance device according to claim 1, wherein the speed zone correction unit corrects the speed zone by removing a zone satisfying the brake avoidance condition from the speed zone.

3. The driving assistance device according to claim 1, wherein the brake avoidance condition computation unit computes the brake avoidance condition of the mobile object, based on the surrounding environment of the blind spot.