Vehicle Follow-Up Control Using Driver Gaze at Intersections

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Solution Overview

Problem

At intersections or branch points, determining the control target vehicle among multiple vehicles in different lanes is challenging, leading to potential erroneous follow-up control due to ambiguity in the host vehicle's course.

Innovation Solution

A vehicle control apparatus that includes a candidate vehicle detection unit, a viewing direction recognition unit, and a control target vehicle determination unit, which uses external sensors and a driver monitor camera to identify the control target vehicle based on the driver's viewing direction, determining the control target vehicle even when multiple candidates are present, and considers the presence of intersections or branch points.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If follow-up control is released at intersections or branch points, then erroneous follow-up control is avoided, but appropriate follow-up control cannot be performed when multiple vehicles are present in different lanes

Engineering Contradiction:
Improveaccuracy of follow-up controlVSAvoidtiming of control target vehicle determination
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system performs preliminary detection of control target candidate vehicles in advance at intersections or branch points, before the host vehicle actually reaches the intersection. By detecting candidates early and preparing potential control targets ahead of time, the system enables smoother transitions and more timely determination of the actual control target vehicle once the host vehicle's course is established, without performing unnecessary processing when no candidates exist

Inventive Principle:
Principle #10Preliminary action

2Productivity

If follow-up control is maintained at intersections or branch points, then continuous control is achieved, but erroneous follow-up control occurs when the host vehicle's course is undetermined

Engineering Contradiction:
Improvecontinuity of follow-up controlVSAvoidaccuracy of follow-up control
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system dynamically adjusts the follow-up control state based on the host vehicle's actual course determination. When the host vehicle's course is undetermined at an intersection or branch point, the system suspends follow-up control to prevent erroneous control. Once the course is determined and a control target vehicle is identified, the system resumes follow-up control, creating a flexible, adaptive control system that responds to real-time conditions

Inventive Principle:
Principle #15Dynamics

3Reliability

If control target vehicle determination is delayed until course determination, then control accuracy is maintained, but excessive approach or sudden deceleration occurs

Engineering Contradiction:
Improveaccuracy of control target identificationVSAvoidresponse time for vehicle speed control
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary detection and identification of control target candidate vehicles in advance, before the host vehicle reaches the intersection or branch point. By preparing potential control targets ahead of time and maintaining them in candidate status, the system enables rapid determination of the actual control target once the host vehicle's course is established, significantly reducing the response time and preventing excessive approach or sudden deceleration

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS20240239340A1Vehicle control apparatus
Publication Date: 2024.07.18 TOYOTA JIDOSHA KK
  • US20240239340A1 patent drawing
  • US20240239340A1 patent drawing
  • US20240239340A1 patent drawing

AI summary

A vehicle control apparatus includes a candidate vehicle detection unit configured to detect a control target candidate vehicle which is a vehicle within a preset detection area of the external sensor and a viewing direction recognition unit configured to recognize a viewing direction of a driver of the host vehicle based on a captured image of a driver monitor camera of the host vehicle. The vehicle control apparatus includes a control target vehicle determination unit configured to determine a control target vehicle from among the plurality of control target candidate vehicles based on the viewing direction of the driver when there is the plurality of control target candidate vehicles.