Vehicle Surface Defect Prioritization for Automated Repair
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Solution Overview
Problem
The manual process of detecting and correcting defects on vehicles, particularly after the painting process, is time-consuming and prone to human bias, making it inefficient and inconsistent.
Innovation Solution
A defect detection and ranking system that uses an image capture device to analyze images of vehicles on an assembly line, detecting defects with associated coordinates, types, and severities, and prioritizing them based on vehicle specifications and market information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual defect detection and correction is used, then human operators can identify and repair defects, but the process becomes time-consuming and prone to human bias
Solution Approach 1:
The patent replaces the manual mechanical inspection process with an automated image capture and analysis system. Image capture devices take photographs of vehicle surfaces, and defect detectors automatically analyze these images to identify defects, eliminating human operators from the detection process and thereby reducing both time consumption and human bias.
Solution Approach 2:
The system enables self-service defect detection where the vehicle inspection process automatically identifies and prioritizes defects without human intervention. The defect detector and prioritization generator work autonomously to detect defects and rank them by severity, allowing the system to serve itself in the inspection task.
2Manufacturing precision
If all detected defects are repaired, then vehicle quality is maximized, but repair time and resources increase significantly
Solution Approach 1:
The patent applies local quality by prioritizing defect repair based on their location and severity on the vehicle. Instead of treating all defects equally, the system identifies which defects are most critical to vehicle quality and prioritizes those for repair, allowing selective repair of high-priority defects while potentially deferring or skipping lower-priority ones.
Solution Approach 2:
The system changes the parameter of defect prioritization by introducing severity ratings and priority rankings. The defect prioritization generator transforms the raw defect data into a prioritized list that reflects which defects should be addressed first, changing the approach from comprehensive repair to targeted repair based on modified priority parameters.
3Productivity
If automated defect detection is implemented, then detection speed and consistency improve, but system complexity increases
Solution Approach 1:
The patent segments the defect detection and prioritization process into distinct functional modules: image capture devices for acquiring images, defect detectors for analyzing images and identifying defects, and defect prioritization generators for ranking defects by severity. This segmentation allows each component to be optimized independently while working together to achieve high detection speed and consistency.
Data Source
AI summary
A defect detection and ranking system for a vehicle assembly line is provided. The system includes an image capture device that captures a plurality of images of a vehicle on the vehicle assembly line. The system also includes a defect detector that analyzes the plurality of captured images and, based on the analysis, detects a plurality of defects on the surface of the vehicle. Each of the plurality of defects has an associated x-y-z coordinate location, a defect type, and a defect severity. The system also includes a datastore containing a vehicle specification, for the vehicle on the vehicle assembly line, and a defect priority based on the vehicle specification. The system also includes a defect prioritization generator configured to: receive the plurality of defects from the defect detector, retrieve the vehicle specification and the defect priority, and apply the defect priority to the plurality of defects, and output a prioritized list of defects, wherein the prioritized list of defects. The defect prioritization generator outputs the prioritized list of defects to an output device associated with the vehicle assembly line.