Travel control device and travel control method

Patent metadata

Field	Value
Publication number	US-12179733-B2
Application number	US-202118008396-A
Country	US
Kind code	B2
Filing date	Feb 5, 2021
Priority date	Jun 12, 2020
Publication date	Dec 31, 2024
Grant date	Dec 31, 2024

Abstract

A travel control device that prevents malfunctioning of an intersection AEB system is provided. The travel control device includes a sensor that detects the front side, and a control unit that controls a brake, based on information from the sensor. When determining that a host vehicle is going to traverse an intersection and make a turn, the control unit carries out control for controlling the brake when the speed of an oncoming vehicle is equal to or higher than a given threshold. When determining that the oncoming vehicle detected by the sensor is going to traverse the intersection and make a turn, the control unit increases the threshold.

First claim

The invention claimed is:

1. A travel control device comprising:
a sensor that detects a front side; and
a control unit that controls a brake, based on information from the sensor,
wherein
when determining that a host vehicle is going to traverse an intersection and make a turn, the control unit carries out control for controlling the brake when a speed of an oncoming vehicle is equal to or higher than a given threshold, and
when estimating that the oncoming vehicle detected by the sensor is going to traverse the intersection and make a turn, the control unit increases the threshold.

2. The travel control device according to claim 1 , wherein
the control unit determines that an oncoming vehicle is going to traverse an intersection and make a turn when one of following conditions is met, the following conditions including
(a) a condition that the oncoming vehicle detected by a sensor is in a lane for traversing the intersection and making a turn,
(b) a condition that an arrow pointing a direction of traversing the intersection and making a turn is turned on in a traffic light a host vehicle is facing,
(c) a condition that a blinker of the oncoming vehicle is blinking, the blinker indicating the direction of traversing the intersection and making a turn, and
(d) a condition that front wheels of the oncoming vehicle are facing to the direction of traversing the intersection and making a turn.

3. The travel control device according to claim 1 , wherein the control unit determines whether an oncoming vehicle is going to traverse an intersection and make a turn, based on a traveling track of the oncoming vehicle.

4. A travel control method for vehicles that is executed by a travel control device,
wherein the travel control device includes
a sensor that detects a front side, and
a control unit that controls a brake, based on information from the sensor,
the travel control method comprising:
causing the control unit to carry out control for controlling the brake when a speed of an oncoming vehicle is equal to or higher than a given threshold in a case where the control unit determines that a host vehicle is going to traverse an intersection and make a turn; and
causing the control unit to increase the threshold when the control unit estimates that the oncoming vehicle detected by the sensor is going to traverse the intersection and make a turn.

Assignees

• Hitachi Astemo Ltd

Inventors

• Inami Ken
• Komatsu Noriyuki

Classifications

• B60T8/246

  Change of direction · CPC title

• B60T8/17558

  specially adapted for collision avoidance or collision mitigation (road vehicle drive control systems for collision avoidance otherwise than by controlling a particular sub-unit B60W30/09) · CPC title

• B60T8/86

  wherein the brakes are automatically applied in accordance with a speed condition and having means for overriding the automatic braking device when a skid condition occurs · CPC title

• B60W2554/4042

  Longitudinal speed · CPC title

• G08G1/166

  for active traffic, e.g. moving vehicles, pedestrians, bikes · CPC title