Travel Route Hazard Mapping for Autonomous Vehicle Speed Control

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Solution Overview

Problem

Existing automated travel systems do not adequately address dangerous locations on travel routes, posing a risk of accidents.

Innovation Solution

A control device that includes a travel route generation system capable of detecting dangerous locations through surrounding environment information, adding location-specific information to the travel route, and controlling vehicle speed or operations to mitigate risks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If automated travel is implemented without considering dangerous locations, then productivity and ease of operation are improved, but reliability and safety deteriorate

Engineering Contradiction:

Improveautomated travel efficiencyVSAvoidtravel safety

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system performs preliminary detection of dangerous locations along the travel route before autonomous travel begins. The dangerous location detection unit identifies hazardous areas in advance, and this information is stored and used to guide subsequent autonomous navigation, preventing accidents before they occur

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors the vehicle's position relative to pre-identified dangerous locations and adjusts travel parameters accordingly. When approaching a dangerous location, the control device provides feedback to decelerate or modify travel behavior, creating a closed-loop safety mechanism

Inventive Principle:

Principle #23Feedback

2Reliability

If dangerous location detection and control measures are added to automated travel systems, then reliability and safety are improved, but device complexity increases

Engineering Contradiction:

Improvetravel safetyVSAvoidsystem structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The control device integrates multiple functions into a single system: it serves as both the autonomous travel controller and the dangerous location detector. The position information acquisition unit and surrounding environment information acquisition unit feed into the same control device that manages travel, eliminating the need for separate dedicated safety systems

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system merges the route planning function with the dangerous location detection function. The travel route generation device simultaneously generates the travel route and identifies dangerous locations along that route, combining what could be separate systems into a unified approach

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP3989198B1Travel route generation device and control device

Publication Date: 2026.03.04 IHI CORP

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AI summary

A travel route generation device (4) includes a travel route acquisition unit (4) configured to acquire position information (Pc) about a travel route (H) for a moving object (M) to perform autonomous travel or remotely controlled travel, a surrounding environment information acquisition unit (22) configured to acquire surrounding environment information, a dangerous location detection unit (23) configured to detect dangerous locations (Pdl to Pd3) where there is a risk of an accident from the surrounding environment information, and an information processing unit (24) configured to add dangerous location information including first information indicating the dangerous locations (Pdl to Pd3) to the position information (Pc) corresponding to the dangerous locations (Pdl to Pd3).