Optical Tube Inspection System for Automated Dimensional Analysis
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Solution Overview
Problem
Current methods for inspecting boiler tubes are time-consuming, prone to human and equipment errors, and require manual calculations, making them inefficient and inaccurate for determining tube quality, especially in assessing bent tubes.
Innovation Solution
A system comprising an optically transparent substrate, a camera, a microprocessor, and a database that captures images of tube cross-sections, measures dimensions, and calculates geometry, facilitating automated and accurate inspections by processing images to determine inner and outer diameters, wall thickness, ovality, and flow area, reducing errors and increasing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual mechanical measurement methods are used for tube inspection, then measurement precision can be achieved, but inspection time increases significantly and human error occurs
Solution Approach 1:
The patent replaces manual mechanical measurement systems (vernier calipers, micrometers) with an optical imaging system. A camera captures images of tube cross-sections, and image processing software automatically measures dimensions such as inner diameter, outer diameter, wall thickness, and ovality. This substitution eliminates manual measurement operations while maintaining measurement precision and significantly reducing inspection time from days to under an hour.
Solution Approach 2:
The patent creates an optical copy (image) of the tube cross-section instead of physically measuring it with mechanical tools. The camera captures a digital representation of the tube geometry, and measurements are derived from this copy through image processing algorithms. This copying approach allows for rapid, repeatable measurements without the time consumption and human error associated with manual mechanical measurement.
2Device complexity
If manual mechanical measurement methods are used, then equipment simplicity is maintained, but measurement accuracy decreases due to human and equipment error
Solution Approach 1:
The patent replaces simple mechanical measurement tools with an automated optical system consisting of a camera, illumination source, and image processing software. This system eliminates human error in measurement while providing consistent, accurate results for tube dimensions including inner diameter, outer diameter, wall thickness, and ovality calculations.
3Reliability
If complete manual inspection process is performed, then thoroughness is achieved, but productivity decreases significantly
Solution Approach 1:
The patent replaces the complete manual inspection process with an automated optical measurement system that rapidly captures and analyzes tube cross-section images. The system performs all necessary measurements (inner diameter, outer diameter, wall thickness, ovality) and calculations automatically, reducing inspection time from several days to under an hour while maintaining thoroughness and reliability.
Solution Approach 2:
The patent enables continuous inspection operation where the camera and image processing system work without interruption to rapidly measure multiple tube cross-sections. The automated system continuously captures images and processes measurements, eliminating the stop-start nature of manual measurement and significantly increasing productivity while maintaining inspection thoroughness.
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
The system enables rapid, accurate inspection of tube quality, reducing inspection time from days to under an hour, minimizing human error, and providing automated calculations, thus improving the speed and reliability of boiler tube assessments.
Implementation Method 1
a camera... operative to capture an image of an object disposed upon the second side of the optically transparent substrate
Implementation Method 2
a source of illumination... operative to illuminate the object disposed on the second side of the optically transparent substrate
Data Source
AI summary
Disclosed herein is a system having an optically transparent substrate having a first side and a second side that are opposed to each other, a microprocessor, a database, a camera disposed upon the first side of the optically transparent substrate and a source of illumination. The source of illumination is disposed in a ring around the camera on the first side and is operative to illuminate the object disposed on the second side of the optically transparent substrate. Further the camera is in operative communication with the microprocessor and the database. The camera is operative to capture an image of an object disposed upon the second side of the optically transparent substrate. The microprocessor is operative to calculate dimensions and geometry of the object from the image and facilitate acceptance or rejection of the object based upon a standard, a parameter or a calibration chart.