Glass Panel Stress Tracking With On-Line Optical Scanning
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Solution Overview
Problem
Conventional glass panel stress testing methods are inefficient and inaccurate, as they rely on manual testing of selected areas, cannot track stress information for each panel produced, and are limited to off-production-line testing, making it difficult to ensure quality control and identify quality issues.
Innovation Solution
A system and method for on-production-line glass panel stress testing using unique identification codes, stress sensors, and a sensor controller to collect and store stress data in a database, allowing for real-time testing and retrieval of stress information across multiple locations on each panel, enabling efficient and accurate stress distribution analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If manual testing of selected glass panels is conducted, then testing cost and time are reduced, but measurement precision and reliability of quality control are worsened
Solution Approach 1:
The patent replaces manual mechanical testing with an automated optical testing system using GASP (grazing angle surface polarimetry) technology. The system uses light beams and polarizers to detect stress distribution automatically, eliminating manual intervention while improving measurement precision through optical measurement principles.
Solution Approach 2:
The patent introduces an identification code as an intermediary between the glass panel and the testing system. This code links each panel to its stress information in a database, enabling automatic tracking and retrieval of quality data without manual recording, thus improving both efficiency and precision.
2Measurement precision
If off-production-line testing is conducted, then measurement precision is improved, but productivity and loss of time are worsened
Solution Approach 1:
The patent performs stress testing during the production process itself (on-production-line) rather than after completion. The testing system is integrated into the production line, allowing panels to be tested while moving through the manufacturing process, thus maintaining precision while improving productivity by eliminating separate testing stages.
3Device complexity
If single location testing is conducted, then device complexity is reduced, but measurement precision of stress distribution is worsened
Solution Approach 1:
The patent segments the testing process into multiple discrete testing locations along the production line. Each location has testing capabilities, and the system collects data from multiple segments to compile comprehensive stress distribution information for each panel, improving measurement precision without requiring a single complex centralized system.
4Ease of operation
If manual selection of testing areas is conducted, then ease of operation is improved, but measurement precision and reliability are worsened
Solution Approach 1:
The patent replaces manual selection and operation with an automated control system that uses the identification code to automatically retrieve and analyze stress information. The system autonomously determines testing parameters and locations based on the panel's data, improving reliability by eliminating human subjectivity while maintaining operational simplicity through automated interfaces.
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
This solution enables efficient on-production-line stress testing of multiple glass panels, providing accurate stress distribution data and ensuring compliance with safety standards, thereby improving quality control and reducing production inefficiencies.
Implementation Method 1
When stress exists on the surface of the glass panel, the total internally reflected incident light is affected by the surface stress to achieve birefringence to produce two beams of light travelling in different directions with polarization orthogonal to each other
Implementation Method 2
When there is no stress on the surface, total internal reflection is achieved when the angle of incidence is a critical angle, i.e., the light travels along the surface and the light is reflected by a critical angle
Data Source
AI summary
The present disclosure discloses a mobile scanning device for retrieving stress information of one of a plurality of reinforced glass panels. The device includes an image capturing device to capture an image of an identification code installed on a surface of the one of the plurality of reinforced glass panels, an image processor to process the captured image and recognize the identification code, a central processor to instruct the mobile scanning device to retrieve stress information corresponding to the identification code from a glass panel production information database, and a display device to display the retrieved stress information. The stress information was obtained via at least one stress sensor testing a stress at different testing locations on a surface of each of a plurality of glass panels being processed on a production line for manufacturing the plurality of reinforced glass panels.