What is machine vision?
Publish Time:
2022-04-24 10:56
Production process control is considered a key success factor for the solar industry. However, this is only part of the favorable conditions for success: In order to fully optimize production and reduce costs, producers must take further steps to ensure that only defect-free materials are processed.
In order to effectively avoid the waste of consumables and the waste of time for defective products, it is necessary to conduct a comprehensive online inspection of the characteristics of each relevant silicon wafer. The new generation of non-contact photoluminescence detection system (PL detector) provides high-precision and high-speed quality assurance for solar silicon wafers. With its advanced technical features, the system can accurately predict cell efficiency based on raw silicon wafer analysis. By investing only in well-processed silicon wafers, the operator has significantly reduced production costs.
The system uses photoluminescence technology. In contrast to electroluminescent systems, detection and efficiency measurements are made contactless. This avoids cracks, breakages and other common defects caused by electronic contacts. This innovative solution offers the best performance for defect detection and classification thanks to photoluminescence-based homogeneous illumination of the complete area (up to a range of 170mmx170mm). The system reliably identifies a wide range of defects including crystal defects, edge impurities and background contamination. Special image filtering technology can automatically identify critical and non-critical defects. Compared with the traditional photoluminescence method, the development time is shortened to one-eighth. In addition, no specialized silicon wafer positioning is required. In this way, more than 3,600 wafers can be inspected per hour.
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2021-09-15
Organizations in the manufacturing industry are under more pressure than ever to increase output while maintaining high quality, productivity and reliability standards.
2021-09-15
Photoluminescence inspection system assists solar wafer production
Production process control is considered a key success factor for the solar industry. However, this is only part of the favorable conditions for success: In order to fully optimize production and reduce costs, producers must take further steps to ensure that only defect-free materials are processed.
2021-09-15
Automatic inspection of solar cell silicon wafers through machine vision technology
With the increase of labor costs, at the same time, in order to ensure the absolute quality of products, avoid product quality problems caused by many human factors, such as secondary pollution and sorting fragments. It is the future development trend of photovoltaic manufacturing technology to use machine vision inspection technology to replace manual labor to objectively and reliably monitor and sort the quality defects of silicon wafers and cells.
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