Interpretation of the strength and charm of machine vision PCB inspection

 Machine vision inspection technology has technical advantages that are incomparable to other inspection solutions and traditional inspection methods, and is widely used in various fields.

1. PCB inspection system checks and corrects PCB defects at a much lower cost during process monitoring than after final testing and inspection.

2. Can detect repetitive errors as early as possible, such as placement displacement or incorrect tray installation. 

3. Provide SPC data to process technicians. The combination of the statistical analysis function of PCB inspection technology and SPC process management technology provides a powerful weapon for timely improvement of the SMT production process, and the yield rate of PCB assembly is significantly improved. With the expansion of the scale of modern manufacturing, production control is becoming more and more important, and the demand for SPC data is also growing. The application of PCB detection technology will become increasingly important. 

4. Can adapt to the requirements of further increase in PCB assembly density. With the substantial increase in the assembly density of electronic products, some traditional testing technologies, such as ICT, can no longer adapt to the development requirements of SMT technology. The emergence of 0402 chip components has made ICT unable to detect, while PCB detection technology will not be affected by these influence of factors. 

5. The test program is generated very quickly. The test program of PCB testing equipment can be generated directly from CAD data, which is very fast. Compared with ICT, since there is no need to make special fixtures, its testing costs are also significantly reduced. 

6. Able to keep up with the production rhythm of the SMT production line. At present, many factories mainly rely on manual visual inspection to inspect PCB components during the production process. However, as the size of PCBs increases and the number of components increases, this inspection method has become overwhelmed. The PCB inspection technology test can currently achieve a speed of 0.1 seconds/frame, which can meet the requirements of online inspection. 

7. The detection reliability is high. The elements of detection are accuracy and reliability. Manual visual inspection always has its limitations, but PCB detection technology testing avoids these disadvantages and can maintain better accuracy and reliability. 

8. Ensure product quality, reduce labor costs, and improve labor productivity. 

9. Non-contact measurement will not damage or scratch the PCB board.

10. In addition, machine vision inspection technology can complete tasks that could not be completed in the past: when processing some micro-tube corners, traditional methods are often not adequate. The PCB inspection system can detect components and spacing of 0201 (0.3mm Picth).