Virtual Moiré Deformation Measurement for Solar Panels
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Solution Overview
Problem
Conventional moiré measuring methods for solar panels require multiple projectors and cameras, making it difficult to quickly and effectively detect deformation, especially outdoors where solar panels are installed.
Innovation Solution
A method using a single image capturing device to capture images of the solar panel, which are then processed to create virtual moiré images by superimposing multiple images with characteristic patterns, allowing for deformation detection without the need for a projector, thereby reducing the size and cost of the measuring system and enhancing portability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional moiré measuring method using multiple projectors and cameras is adopted, then measurement precision can be achieved, but device complexity increases and portability decreases
Solution Approach 1:
The patent extracts the projector component from the conventional moiré measurement system, retaining only the camera and computational elements. This extraction eliminates the need for complex optical projection equipment while preserving the core measurement functionality through digital image processing and virtual moiré pattern generation.
Solution Approach 2:
The patent creates virtual copies of moiré patterns through digital image processing rather than physical projection. By capturing images with characteristic patterns and generating virtual overlapped images computationally, the system replicates the moiré effect without requiring physical projectors, thereby simplifying the device while maintaining measurement precision.
2Measurement precision
If multiple projectors and cameras are used for moiré measurement, then measurement accuracy is improved, but the measuring speed and efficiency decrease
Solution Approach 1:
The patent employs periodic capture of images with characteristic patterns at different positions or orientations, then processes these periodic image sets computationally to generate virtual moiré patterns. This periodic imaging approach maintains measurement accuracy while enabling faster data acquisition compared to complex multi-projector systems.
Solution Approach 2:
The patent replaces the mechanical/optical projection system with a computational image processing system. Instead of using multiple projectors to create physical moiré patterns, the system captures images and generates virtual moiré patterns through digital processing, significantly improving measuring speed while maintaining accuracy.
3Reliability
If a conventional moiré system with projectors and cameras is deployed, then deformation can be detected, but the system size and cost increase
Solution Approach 1:
The patent removes the projector component from the traditional moiré measurement system, retaining only the essential image capture and processing elements. This extraction reduces system size and cost while preserving the core deformation detection capability through computational generation of virtual moiré patterns.
Solution Approach 2:
The patent enables the camera system to perform both image capture and virtual pattern generation functions. By processing captured images computationally to create virtual overlapped images with moiré patterns, the system serves itself without requiring separate projection equipment, thereby reducing overall system size and cost.
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 approach enables rapid, non-destructive deformation measurement of solar panels, providing simple deformation information for manufacturing and outdoor damage analysis, improving testing efficiency and reducing costs.
Implementation Method 1
The to-be-tested overlapped image and the reference overlapped image are superimposed to generate a virtual moiré image. The virtual moiré image has a moiré pattern. The moiré pattern is different from the multiple first characteristic patterns, and the moiré pattern is different from the multiple second characteristic patterns.
Data Source
AI summary
A measuring method includes the following. An image to be tested of an object to be tested with a first characteristic pattern is formed and is copied to form multiple images to be tested. The multiple images to be tested are superimposed to form a to-be-tested overlapped image which has the multiple first characteristic patterns. A reference image of a reference object with a second characteristic pattern is formed and is copied to form multiple reference images. The multiple reference images are superimposed to form a reference overlapped image which has the multiple second characteristic patterns. The to-be-tested overlapped image and the reference overlapped image are superimposed to generate a virtual moiré image having a moiré pattern different from the multiple first characteristic patterns and the multiple second characteristic patterns.