Image-Based Wear Detection for Bicycle Components

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Solution Overview

Problem

Current methods do not effectively allow users to readily obtain information on the degree of wear for human-powered vehicles without specialized diagnostic devices.

Innovation Solution

A detecting device equipped with a control unit using processing circuitry and machine learning models to analyze images of human-powered vehicles, identifying worn components and outputting wear information, including training data for specific components like brake shoes, sprocket assemblies, and tires, and providing related maintenance information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional diagnostic devices are used to detect wear of human-powered vehicle components, then measurement precision is improved, but device complexity and ease of operation deteriorate

Engineering Contradiction:
Improvewear detection accuracyVSAvoiduser accessibility
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent uses image copying technology to capture visual representations of vehicle components (brake shoes, brake pads, tires, chains, wires) and processes these images to detect wear. Instead of requiring physical contact with specialized diagnostic devices, the system creates and analyzes digital copies (images) of the components, making detection accessible to ordinary users through simple imaging while maintaining accurate wear measurement through image processing algorithms

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent replaces traditional mechanical diagnostic devices with an optical/image-based system. Instead of using physical measurement tools that require specialized operation, the system substitutes mechanical detection with optical imaging and computational analysis, allowing users to simply capture images with a camera or imaging device while the system automatically performs wear detection through image processing

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If specialized diagnostic devices are used for wear detection, then measurement precision is improved, but device complexity worsens

Engineering Contradiction:
Improvewear information accuracyVSAvoidsystem simplicity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent creates a multi-functional system that can detect wear across multiple different vehicle components (brake shoes, brake pads, tires, chains, wires) using a single universal image processing approach. The system handles various component types and wear patterns through unified image capture and processing algorithms, eliminating the need for multiple specialized diagnostic devices while maintaining accurate wear detection for each component type

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

Solution Approach 2:

The system uses image copying to create digital representations of diverse vehicle components and processes all of them through the same computational framework. By converting physical components into image data, the system simplifies the detection process while maintaining measurement precision across different component types through consistent image analysis methods

Inventive Principle:
Principle #26Copying

3Ease of operation

If manual wear inspection is performed, then ease of operation is improved, but measurement precision and loss of information worsen

Engineering Contradiction:
Improveinspection simplicityVSAvoidwear data completeness
Core Design Contradiction:
Ease of operationVSLoss of information

Solution Approach 1:

The patent implements feedback by capturing images of vehicle components, processing them through image analysis algorithms, and providing wear information back to the user. The system continuously refines its detection by comparing image features against wear patterns, ensuring complete and accurate wear data is extracted and communicated to the user, eliminating information loss while maintaining operational simplicity

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces manual visual inspection with automated image processing and analysis. Instead of relying on human judgment that may miss subtle wear indicators, the system uses computational algorithms to analyze image data comprehensively, extracting complete wear information that would be difficult to obtain through manual inspection while keeping the user interface simple

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS11526699B2Detecting device, detecting method, generating method, computer program, and storage medium
Publication Date: 2022.12.13 SHIMANO INC
  • US11526699B2 patent drawing
  • US11526699B2 patent drawing
  • US11526699B2 patent drawing

AI summary

Provided are a detecting device, a detecting method, a generating method, and a computer-readable storage medium that allow the user to readily obtain information on the degree of wear for a worn portion in the human-powered vehicle. A detecting device includes a control unit that detects a worn portion in a human-powered vehicle as a target worn portion from a first image including at least a part of the human-powered vehicle and outputs wear information related to a degree of wear for the target worn portion.