Moving Robot Map Simplification for User-Friendly Area Recognition

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Solution Overview

Problem

Conventional moving robots face challenges in effectively mapping and cleaning complex indoor spaces with multiple connected areas, as they struggle to divide and recognize distinct areas, leading to inefficient cleaning and high power consumption.

Innovation Solution

A moving robot equipped with an obstacle sensing unit and a control unit that creates a user-friendly map by simplifying area outlines and attributes, allowing users to input cleaning commands easily, and optimizes cleaning paths to avoid unnecessary movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the moving robot creates a detailed map with complicated outlines to accurately represent the cleaning area, then the map precision is improved, but the user cannot easily recognize the areas and the device complexity increases

Engineering Contradiction:
Improvemap accuracyVSAvoiduser recognition
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent creates a simplified copy of the actual cleaning area map. The control unit generates a user-friendly map that copies the essential layout and boundaries of the cleaning area while removing unnecessary detailed features. This allows users to easily recognize and understand the cleaning zones without being overwhelmed by complex geometric outlines, while still maintaining accurate representation of traversable areas for robot navigation.

Inventive Principle:
Principle #26Copying

2Productivity

If the moving robot divides the cleaning area into multiple complex areas to avoid duplicate cleaning, then the cleaning efficiency is improved, but the device complexity and power consumption increase

Engineering Contradiction:
Improvecleaning efficiencyVSAvoidarea division complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the cleaning area into multiple distinct zones based on the simplified map. The control unit divides the cleaning area into plurity of areas with clear boundaries that are easy to identify and manage. This segmentation enables the robot to systematically clean each area without duplication while keeping the division logic simple and computationally efficient, avoiding the need for complex algorithms to manage area boundaries.

Inventive Principle:
Principle #1Segmentation

3Ease of manufacture

If the moving robot follows wall track to create the map, then the map creation is simplified, but the outline becomes complicated and does not match the real form of indoor space

Engineering Contradiction:
Improvemap creation easeVSAvoidoutline accuracy
Core Design Contradiction:
Ease of manufactureVSShape

Solution Approach 1:

The control unit creates a simplified geometric copy of the cleaning area by processing the wall-following data. Instead of directly using the complicated outline obtained from wall tracking, the system generates a simplified representation that captures the essential shape and boundaries of the cleaning area. This simplified outline better matches the real form of indoor spaces while maintaining the ease of map creation through wall following.

Inventive Principle:
Principle #26Copying

Data Source

PatentUS11467603B2Moving robot and control method thereof
Publication Date: 2022.10.11 LG ELECTRONICS INC
  • US11467603B2 patent drawing
  • US11467603B2 patent drawing
  • US11467603B2 patent drawing

AI summary

A moving robot and a control method thereof according to the present invention create a cleaning map including information on a travelable area of a cleaning area based on obstacle information, create a create a manufactured user map by changing forms and outlines by area with respect to a plurality of area configuring the cleaning map, and create a user map having a form similar to that of the cleaning are in a real indoor space by changing a form and an outline of a map including information on the travelable area according to an arear, so that a user easily recognizes a position of each area to input a cleaning command through the map, and a cleaning command with respect to an area which the moving robot cannot run is prevented from being input. Since the moving robot does not unnecessarily move an area, operation power consumption is reduced. The moving robot may run a cleaning area with limited power to efficiently clean the cleaning area.