Mobile Robot Beacon Navigation to Reduce Zigzag Path Distance

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Solution Overview

Problem

Mobile robots guided by multiple beacons often incur unnecessary travel distance due to zigzag movement patterns when approaching and switching between beacons, leading to inefficient path navigation.

Innovation Solution

A mobile robot equipped with a driving unit, detection unit, and control unit that calculates and adjusts its traveling direction to maintain a constant distance from boundaries defined by beacons, reducing redundant movement by switching targets only when necessary.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the mobile robot moves toward a target beacon and stops when approaching to a predetermined distance, then the robot can complete navigation using multiple beacons, but the robot incurs wasted movement and travels unnecessary distance due to zigzag patterns when switching between beacons

Engineering Contradiction:
Improvenavigation efficiencyVSAvoidtraveling distance
Core Design Contradiction:
ProductivityVSLength of moving object

Solution Approach 1:

The robot calculates the position of the next target beacon in advance before actually reaching the current beacon. By preparing the next navigation target beforehand, the robot avoids unnecessary stopping and direction changes, thereby reducing zigzag movement patterns and optimizing the overall traveling path

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The robot dynamically adjusts its navigation strategy by continuously monitoring the positions of multiple beacons and calculating optimal target switching points. Instead of rigidly following a sequence of stop-at-beacon commands, the system adapts the navigation path to minimize total distance while still achieving the goal of visiting all required beacons

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS11112803B2Mobile robot and control method
Publication Date: 2021.09.07 THK CO LTD
  • US11112803B2 patent drawing
  • US11112803B2 patent drawing
  • US11112803B2 patent drawing

AI summary

A mobile robot includes a driving unit which changes a moving velocity and a traveling direction, a detection unit which detects a plurality of detection objects disposed along a traveling path to a target point, and a control unit which acquires a distance and a direction to the detection object detected by the detection unit, calculates a traveling direction in which the distance to the detection object and the direction of the detection object satisfy a predetermined relationship, and controls the driving unit based on the calculated traveling direction.