检测和控制印刷电路板上的热熔胶

任务

在许多印刷电路板上，导热膏可确保电子工件和散热器之间的最佳热传导。
散热膏涂抹不正确会导致工件损坏。
为防止这种风险，相机应检测导热膏是否存在、位置和几何形状是否正确。

The challenge

There are many electrical components on a circuit board. The camera must reliably distinguish the thermal paste from them. It is important that the sensor creates sufficient contrast for reliable evaluation - even if the brightness of the thermal paste resembles that of the component parts.

Our solution

The VISOR^® Object combined with a polarizing filter provides the necessary contrast for optimal identification of the thermal paste.
With the correct settings in the color channel, the image can be easily binarized. This means that all pixels within a definable color range become black. Pixels with a deviating color value become white.
Using the BLOB detector, the thermal paste can be precisely checked with regard to its position, area, expansion, and presence.
Any surface with the same geometry can be inspected with a detector.
Through the "Free-form Tool," the BLOB detector can be set to inspect all areas where thermal paste should not be present. If the thermal paste is found in an undesired position, the sensor evaluates the part as "not OK."

您的受益

用于二值化的强大色彩通道特征
BLOB 检测器具有自由形态工具和几何评估等成熟功能
偏振片附件

检测和控制印刷电路板上的热熔胶

任务

The challenge

Our solution

您的受益

为该应用推荐的产品

VISOR® 物体检测相机