Magnetic Wheel Orientation Control for Floor-to-Wall Moving Devices

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Solution Overview

Problem

Existing moving devices struggle with complex operations required to adjust the direction of magnets when transitioning between surfaces, such as from a floor to a wall, leading to potential wheel sticking and inefficient path navigation.

Innovation Solution

A moving device equipped with axially supported wheels, magnets, and a control unit that automatically adjusts the direction of the magnets based on detection units, allowing for seamless transitions and simple operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If manual adjustment of magnet direction is used during surface transitions, then the moving device can navigate complex surfaces, but the operator burden increases and operation complexity increases

Engineering Contradiction:
Improvesurface transition capabilityVSAvoidoperator burden
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The detection unit automatically detects the direction of the traveling surface, and the control unit automatically controls the magnet drive unit to adjust the magnet direction, enabling the system to self-adjust without manual intervention during surface transitions

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The detection unit provides real-time feedback on magnet direction and traveling surface orientation, allowing the control unit to make automatic adjustments to maintain optimal magnet alignment with the traveling surface

Inventive Principle:
Principle #23Feedback

2Adaptability or versatility

If manual adjustment of magnet direction is used during surface transitions, then the moving device can navigate complex surfaces, but the operation time increases

Engineering Contradiction:
Improvesurface transition capabilityVSAvoidoperation time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The detection unit continuously monitors the traveling surface direction in advance, and the control unit proactively adjusts the magnet direction before surface transitions occur, eliminating delays during actual transitions

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The automatic detection and control system performs surface transition adjustments autonomously without waiting for manual operator input, significantly reducing transition time

Inventive Principle:
Principle #25Self-service

3Ease of operation

If automatic magnet direction adjustment is implemented, then operator burden is reduced and navigation efficiency improves, but device complexity increases

Engineering Contradiction:
Improveoperator burdenVSAvoidsystem complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The detection unit serves multiple functions by detecting both the traveling surface direction and the magnet direction, while the control unit integrates both detection signals to control the magnet drive unit, reducing the need for separate dedicated components

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

Solution Approach 2:

The detection and control functions are integrated into a unified automatic adjustment system where the detection unit and control unit work together as a coordinated pair to manage magnet orientation, simplifying the overall system architecture

Inventive Principle:
Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables efficient traversal over complex surfaces by automatically adjusting magnet direction, reducing operator burden and enhancing navigation efficiency.

Implementation Method 1

a magnetic force is used to adsorb four wheels to the wall surface

Methodology Applied
Scientific EffectMagnetic force: Magnetism

Implementation Method 2

a detection unit that detects a direction of the magnet

Methodology Applied
Scientific EffectMagnetic field detection: Magnetic Field

Implementation Method 3

a backdrivable motor is adopted for driving a magnet incorporated into the wheel. In this manner, the magnet can be passively adsorbed to a traveling surface of a magnetic body

Methodology Applied
Scientific EffectMagnetic adsorption: Magnetism

Data Source

PatentUS20250326106A1Moving device, control method for moving device, and non-transitory computer readable medium storing control program
Publication Date: 2025.10.23 SUMITOMO HEAVY IND LTD
  • US20250326106A1 patent drawing
  • US20250326106A1 patent drawing
  • US20250326106A1 patent drawing

AI summary

A moving device includes: a plurality of wheels axially supported by a vehicle body; a magnet incorporated into each of the plurality of wheels; a magnet drive unit that rotates the magnet around a rotary shaft; a detection unit that detects a direction of the magnet; and a control unit that controls the magnet drive unit to change the direction of the magnet, based on the direction of the magnet which is detected by the detection unit.