Disc Wheel Image Inspection for Fastener Looseness Detection
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Solution Overview
Problem
Existing methods for detecting looseness of wheel fasteners, such as wheel nuts or wheel bolts, require capturing images from individual predetermined directions, making the process time-consuming and labor-intensive, especially for heavy-duty vehicles with numerous wheel fasteners.
Innovation Solution
A method and system that utilize an information device with capturing, wireless communication, and display functions to capture images of disc wheels with multiple wheel fasteners, compare these images with reference images, and transmit inspection results wirelessly for efficient detection of loose wheel fasteners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If images are captured from individual predetermined directions for each wheel fastener, then inspection accuracy is improved, but inspection time and labor effort increase significantly
Solution Approach 1:
The patent merges multiple individual fastener inspections into a single collective inspection process. By capturing an image of the entire wheel assembly and comparing it with a reference image of the same wheel assembly, the system inspects multiple wheel fasteners simultaneously, thereby reducing inspection time while maintaining accuracy through comprehensive image comparison
Solution Approach 2:
The inspection system achieves multi-functionality by using a single image capture and comparison process to inspect all wheel fasteners on a wheel assembly. The method universally applies to multiple fasteners without requiring separate inspection procedures for each individual fastener, thereby improving efficiency
2Reliability
If images are captured from individual predetermined directions for each wheel fastener, then detection reliability is improved, but operational complexity increases
Solution Approach 1:
The patent combines multiple separate inspection operations into a single unified process. Instead of requiring operators to capture and analyze images from individual predetermined directions for each fastener, the system uses a single image capture of the entire wheel assembly and compares it with a reference image, thereby improving ease of operation while maintaining detection reliability
Solution Approach 2:
The system uses a reference image (a copy of the wheel assembly in its proper state) to compare against the captured image. This copying approach allows for reliable detection of loose fasteners by identifying deviations from the reference state, while simplifying the inspection process to a single comparison operation
Data Source
AI summary
An information device including a capturing function uses the capturing function to capture an image of a disc wheel to which a plurality of wheel fasteners are fastened. Then, the information device inspects whether any of the wheel fasteners appearing in the captured image is loose by comparing the captured image with a reference image in consideration of a reference point of the disc wheel appearing in the captured image.