Autonomous Driving Display for Branch Road Route Clarity

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Solution Overview

Problem

In autonomous driving systems, occupants are unclear about the vehicle's movement direction on branch roads when in following road autonomous driving mode, as there is no clear indication of the route and direction.

Innovation Solution

An autonomous driving device with a display unit and electronic control unit that switches between destination setting and following road autonomous driving modes, displaying the traveling route to the nearest branch road and its direction when in following road mode, and optionally stopping the vehicle if no occupant is detected, to reflect the intention of the occupant's presence or absence.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the vehicle travels autonomously along a following road traveling route without displaying branch road information, then the autonomous driving function is simplified and easier to operate, but the occupant cannot understand how the vehicle travels on branch roads

Engineering Contradiction:
Improveease of operationVSAvoidloss of information
Core Design Contradiction:
Ease of operationVSLoss of information

Solution Approach 1:

The display information is segmented into different levels: basic route information is always displayed, while branch road specific information is displayed only when the vehicle approaches a branch road. This segmentation allows the system to maintain simplicity for most of the journey while providing detailed information when needed, resolving the contradiction between ease of operation and information completeness

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system performs preliminary action by displaying branch road information in advance before the vehicle actually reaches the branch road. This allows the occupant to understand the upcoming route in preparation time, resolving the information loss issue while maintaining a clean display during normal driving

Inventive Principle:
Principle #10Preliminary action

2Productivity

If the vehicle continues traveling after destination arrival without occupant detection, then productivity is maintained, but safety may be compromised if no occupant is present to receive the vehicle

Engineering Contradiction:
ImproveproductivityVSAvoidreliability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system implements feedback by detecting occupant presence and using this information to adjust driving behavior. When no occupant is detected after destination arrival, the system receives feedback that the vehicle should stop, preventing unnecessary continued travel and ensuring reliability while maintaining productivity during normal operations

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system dynamically adjusts its operation based on real-time conditions. The vehicle transitions from continuous travel mode to stop mode based on destination arrival and occupant detection status. This dynamic behavior allows the system to maintain productivity during normal operations while ensuring reliability by stopping when appropriate

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS11713054B2Autonomous driving device and autonomous driving control method that displays the following road traveling route
Publication Date: 2023.08.01 TOYOTA JIDOSHA KK
  • US11713054B2 patent drawing
  • US11713054B2 patent drawing
  • US11713054B2 patent drawing

AI summary

An autonomous driving device is configured to switch a driving mode, and includes a destination setting type autonomous driving mode in which a vehicle is made to travel to a destination and a following road autonomous driving mode in which, when a destination is not set, the vehicle is made to travel along a road. The autonomous driving device includes a display unit and an electronic control unit. The electronic control unit is configured to, when the display unit is made to display a traveling route along a following road traveling route, make the display unit display a traveling route from a current position of the vehicle to a nearest branch road in front in a moving direction along the following road traveling route and a moving direction on the nearest branch road along the following road traveling route.