为了实现对玻璃面板油墨层厚度的检测, 提出了一种满足工业化检测需要的玻璃面板油墨厚度无损在线检测系统。首先, 基于结构光测量原理进行非接触式测量, 进一步提出了基于自适应提取算法的油墨厚度数字化定量计算模型, 对采集到的携带油墨厚度信息的亮线图像进行处理, 该模型非常适用于非接触式数字化检测; 其次, 建立了完整的检测系统, 将标准油墨面板作为油墨检测的评价标准, 多次测量拟合定标系数;最后, 该玻璃面板油墨厚度无损测量系统的最大检测厚度达23 mm, 检测精度优于4 μm, 通过对玻璃面板油墨层厚度的检测, 实现了对油墨厚度的高精度、快速、无损检测, 具有广阔的应用前景。

In order to detect the thickness of ink coated on the glass, a nondestructive and on-line measurement system was proposed, which can be used in industrial measurement. Firstly, the structure light principle was presented, and a model based on the adaptive extraction algorithm, called digital quantitative calculation model for the thickness of glass printing ink was creatively put forward to process the bright-line images of printing ink. It was extremely suitable for non-contact digital detection. Secondly, a standard glass with printing ink film was chosen as the accurate evaluation basis, managed to obtain a ratio which was related to the thickness of printing ink from multiple measurements and fitting. Finally, the maximum detection thickness was 23 mm and the precision of the nondestructive and on-line measurement system can reach 4 μm. As a result, by measuring the thickness of glass printing ink, this instrument can complete a high-precision, fast and nondestructive detection, which offers a broad application prospect.