Second generation HTS tape has entered the stage of mass production. The biggest bottleneck in stable production and consistently high-quality superconducting coatings lies in the control of deposition temperature during superconducting coatings. It is very challenging to effectively monitor the temperature in the dynamic process of roll-to-roll coating. Through observation, it is found that the color of superconducting surface is very sensitive to the change of coating temperature. In this study, a real-time video analysis technology has been developed to obtain the grayness scale of the surface of the superconducting layer during coating. The relationship between grayness scale, temperature and the final critical current of superconducting tape has been established through short sample experiments. These relationships are also clearly demonstrated in the long tape production process, which can significantly detect any abnormal trends of tape products by capturing the surface temperatures through grayness scale. The region of interest was tracked, by dividing it into three parts and calculating the average grayness level of each part. The results obtained can be used to determine PLD temperature setting and provide a reference for the subsequent slitting of superconducting tapes. This work also provides a potential quality improvement technique for superconducting tape production.

第二代高温超导胶带已进入量产阶段。稳定生产和始终如一的高质量超导涂层的最大瓶颈在于控制超导涂层过程中的沉积温度。在卷对卷涂布的动态过程中有效地监测温度是非常具有挑战性的。通过观察发现，超导表面的颜色对涂层温度的变化非常敏感。在这项研究中，开发了一种实时视频分析技术，以获得涂层过程中超导层表面的灰度。通过短样本实验，建立了超导胶带灰阶、温度和最终临界电流之间的关系。这些关系在较长的胶带生产过程中也得到了清晰的体现，通过灰度级捕捉表面温度，可以显着检测胶带产品的任何异常趋势。通过将感兴趣区域分成三个部分并计算每个部分的平均灰度级来跟踪感兴趣的区域。所得结果可用于确定PLD温度设置，为后续超导带分切提供参考。这项工作还为超导胶带生产提供了一种潜在的质量改进技术。通过将其分成三个部分并计算每个部分的平均灰度级。所得结果可用于确定PLD温度设置，为后续超导带分切提供参考。这项工作还为超导胶带生产提供了一种潜在的质量改进技术。通过将其分成三个部分并计算每个部分的平均灰度级。所得结果可用于确定PLD温度设置，为后续超导带分切提供参考。这项工作还为超导胶带生产提供了一种潜在的质量改进技术。