Mobile Robot Map Selection for Changing Environments

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Solution Overview

Problem

Existing map-based cleaning robots require a new map to be created whenever the working environment changes, leading to inconvenience and inefficiency in cleaning operations.

Innovation Solution

A mobile robot system that generates and selects from multiple composites of cleaning area information, including a cleaning area map, feature point map, and user-defined options, to recognize positions and perform cleaning efficiently, even in changing environments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single map is used for cleaning operations, then the system structure remains simple, but the robot cannot adapt to environmental changes and requires manual map recreation

Engineering Contradiction:
Improveadaptability to environmental changesVSAvoidmap management complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent divides the cleaning area into multiple sub-maps, each representing a specific region or aspect of the environment. The robot can selectively use appropriate sub-maps based on environmental conditions, avoiding the need to manage a single complex map while adapting to changes efficiently.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system dynamically selects and switches between different maps based on real-time environmental conditions and robot position. This dynamic adaptation allows the robot to respond to environmental changes without requiring manual intervention or complex map management structures.

Inventive Principle:
Principle #15Dynamics

2Measurement precision

If a new map is created whenever the working environment changes, then cleaning accuracy is maintained, but time is lost due to map recreation

Engineering Contradiction:
Improveposition recognition accuracyVSAvoidmap creation time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

Multiple maps are pre-created for different environmental conditions and stored in advance. When the environment changes, the robot can directly select from these pre-prepared maps without needing to recreate them, thus maintaining position recognition accuracy while avoiding time loss.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system creates copies of map data for different environmental scenarios and stores them for quick retrieval. This allows the robot to switch between pre-existing map copies rather than creating new maps each time, preserving accuracy while reducing time consumption.

Inventive Principle:
Principle #26Copying

3Productivity

If multiple types of cleaning area information are integrated, then cleaning efficiency is improved, but information processing complexity increases

Engineering Contradiction:
Improvecleaning efficiencyVSAvoidinformation processing complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent combines multiple types of cleaning area information (cleaning area maps, feature point maps, option information) into an integrated composite map structure. This merging allows the robot to process diverse information uniformly, improving cleaning efficiency while managing complexity through a standardized integration framework.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The composite map structure serves multiple functions simultaneously: it stores cleaning area boundaries, feature points for position recognition, and user options. This multi-functionality allows the system to handle various cleaning tasks using a single unified data structure, improving efficiency without proportionally increasing complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS10335949B2System for operating mobile robot based on complex map information and operating method thereof
Publication Date: 2019.07.02 YUJIN ROBOT
  • US10335949B2 patent drawing
  • US10335949B2 patent drawing
  • US10335949B2 patent drawing

AI summary

Disclosed are a system for operating a mobile robot based on cleaning area information and a method thereof. A mobile robot based on cleaning area information according to an exemplary embodiment of the present invention includes a memory which stores a plurality of cleaning area information in which at least a part of a cleaning available area is changed; and a controller which controls to select one cleaning area information among the plurality of stored cleaning area information, recognize a position on a cleaning area map which configures the selected cleaning area information and perform cleaning on the cleaning available area from the recognized position.