Autonomous Hazard Mapping for Passable Evacuation Routes

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Solution Overview

Problem

Existing evacuation guidance systems do not account for the actual passability of routes during disasters, leading to impassable guidance routes and ineffective evacuation planning.

Innovation Solution

An evacuation information generation system that utilizes autonomous traveling devices to acquire observation information, generating hazard maps and evacuation routes based on actual conditions using sensors and communication systems, reflecting real-time hazard levels and route passability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If evacuation guidance routes are set based on current position and exit position without considering actual passability, then the system can provide quick evacuation guidance, but the guidance routes may become impassable due to hazards

Engineering Contradiction:

Improveevacuation guidance timeVSAvoidroute passability

Core Design Contradiction:

Loss of timeVSReliability

Solution Approach 1:

The autonomous traveling device performs preliminary exploration of the traveling area before evacuation is needed, acquiring observation information about hazards and creating hazard maps in advance. This preliminary action ensures that when evacuation is required, the system already has accurate information about route passability, resolving the contradiction between quick guidance and reliable routes.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system continuously updates hazard maps based on observation information acquired by the autonomous traveling device during exploration. This feedback mechanism ensures that evacuation guidance routes are based on current, accurate information about hazards, maintaining route passability while enabling quick response when needed.

Inventive Principle:

Principle #23Feedback

2Measurement precision

If the system uses autonomous traveling devices to acquire observation information and generate hazard maps, then the accuracy of evacuation information is improved, but the system complexity increases

Engineering Contradiction:

Improvehazard detection accuracyVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The autonomous traveling device independently performs exploration, acquires observation information using its own sensors, and generates hazard maps without requiring complex external infrastructure. This self-service capability improves measurement precision while avoiding the need for complex centralized systems.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The autonomous traveling device performs multiple functions including exploration, hazard detection, map generation, and evacuation guidance provision. This multi-functionality reduces overall system complexity by consolidating capabilities into a single versatile device rather than requiring separate specialized systems.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250225847A1Evacuation information generation system, evacuation information generation device, autonomous traveling device, evacuation information generation method

Publication Date: 2025.07.10 DENSO CORP

AI summary

An evacuation information generation system, an evacuation information generation device, an autonomous traveling device, or an evacuation information generation method is used for generating evacuation information of a traveling area of an autonomous traveling device, acquires observation information obtained by observation by the autonomous traveling device that searches for the traveling area where a hazard is estimated to occur; and outputs the evacuation information as a hazard map or evacuation route data.