基于MATLAB App Designer电容漏插检测系统
Capacitor Leak Detection System Based on MATLAB App Designer

在快速发展的工业生产中，印刷电路板PCBA (Printed Circuit Board Assembly)在现代电子设备中占有重要地位，而PCB缺陷检测是提高印制线路板质量、降低生产成本的重要环节。针对PCBA上电解电容元件漏插人工目检易出错的问题，设计了一种基于USB摄像头与MATLAB中App Designed设计工具相结合的方案。利用App Designer设计了“图像采集”、“模板制作”和“在线检测”三个面板，“图像采集”模块用来调用USB摄像头采集图像，“模板制作”模块用来将图像进行ROI裁剪并做灰度化处理，“在线检测”模块可将模板中信息取出并调用USB摄像头做实时在线监测。经实验验证，该系统可以较为准确地检测出PCB板上电容的漏插情况。
In the rapid development of industrial production, Printed Circuit Board (PCBA) plays an important role in modern electronic equipment, and PCB defect detection is an important link to improve the quality of Printed Circuit Board and reduce the production cost. In order to solve the problem that the electrolytic capacitor components on PCBA are prone to errors in manual visual inspection, a scheme based on the combination of USB camera and APP Designed tool in MATLAB is designed. App Designer is used to design three panels: “Image Collection”, “Template Production” and “Online Detection”. The module of “Image Collection” is used to call the USB camera to collect images, and the module of “Template Production” is used to perform ROI cutting and grayscale processing on images. The “Online Detection” module can take out the information in the template and call the USB camera for real-time online monitoring. The experimental results show that the system can detect the leakage of capacitance on PCB board accurately.