Evaluation of imaging performance for electroluminescence defect detector

Jian-chun LIN; Ai-jun YANG; Yi-hui SHEN

doi:10.3788/OPE.20172506.1418

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Evaluation of imaging performance for electroluminescence defect detector

Modern Applied Optics | 更新时间：2020-07-07

- Evaluation of imaging performance for electroluminescence defect detector
- Optics and Precision Engineering Vol. 25, Issue 6, Pages: 1418-1424(2017)
- 作者机构：
  
  福建省计量科学研究院国家光伏产业计量测试中心, 福建福州 350003
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20172506.1418
  CLC： TM914.4
- Received：14 February 2017，
  
  Accepted：20 March 2017，
  
  Published：25 June 2017
- 稿件说明：
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Jian-chun LIN, Ai-jun YANG, Yi-hui SHEN. Evaluation of imaging performance for electroluminescence defect detector[J]. Optics and precision engineering, 2017, 25(6): 1418-1424.
DOI：

Jian-chun LIN, Ai-jun YANG, Yi-hui SHEN. Evaluation of imaging performance for electroluminescence defect detector[J]. Optics and precision engineering, 2017, 25(6): 1418-1424. DOI： 10.3788/OPE.20172506.1418.

摘要

针对电致发光缺陷检测仪的成像性能不一致的现状，结合光伏组件自身的电致发光原理，对分辨率、图像均匀性、图像显示等技术指标进行了分析和比较，提出了一种适用于光伏组件生产线现场快速有效的检测技术。研制了相应的检测评估装置，开展了相关测试试验。实验结果表明，利用该技术对粘贴在组件上的分辨率测试板的图像进行视觉判读，可实现1.98 lp/mm（线对每毫米）的最高分辨率检测以及0.1 mm线宽的最小单条纹缺陷模拟检测，从而保证光伏组件的缺陷检测工作能够更加准确有效，促进光伏产业的质量提升。经测试，该评估技术适用于光伏组件生产线上的电致发光缺陷检测仪，可满足目前光伏产业的检测需求。

Abstract

Technical indexes such as resolution

image uniformity

and image display were analyzed and compared

aiming at the inconsistency of current imaging performance of electroluminescent (EL) defect detector in combination with electroluminescent principles of Photovoltaic (PV) modules. A rapid and effective on-line detection technique for PV modules was proposed. Corresponding detection and assessment devices were developed

and related test experiments were implemented. The experiment results show that for a visual judgment of images on test board of resolution ratio pasted in modules

the technique can realize a detection with the highest resolution of 1.98 lp/mm and a simulative detection of minimum single stripe flaw with line width of 0.1 mm

thus guaranteeing more accurate and effective defect detection for PV modules and promoting production quality of PV industry. The assessment technique is feasible to EL defect detector in production line of PV modules and can satisfy current detection demands of photovoltaic industry.

关键词

Keywords

references

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