PCB deviation detection method

By using a PCB offset detection method, the problems of insufficient compatibility and accuracy of PCB testing equipment have been solved, enabling stable testing of high-precision, multi-specification products and reducing the risk of component damage.

CN121576958AActive Publication Date: 2026-02-27ZHEJIANG SEMIPEAK TECH CO LTD
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Patent Information

Application Number
CN202610100270.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-26
Publication Date
2026-02-27
Estimated Expiration
2046-01-26

AI Technical Summary

Technical Problem

Existing PCB testing equipment is difficult to adapt to the combination of PCB and FPC with different characteristics in the panel terminal area. The accuracy of offset detection is insufficient and the compatibility of multiple product specifications is poor, resulting in insufficient detection accuracy and secondary damage to components.

Method used

The PCB offset detection method is adopted. By inputting a standard template, the terminal area image of the panel to be inspected is obtained, the fixed technical features are analyzed, the offset value is calculated, and it is determined whether the offset value is within the qualified range. Combined with a pre-alignment camera and a detection camera, precise positioning and detection are performed, which can adapt to PCB and FPC combinations with different characteristics.

Benefits of technology

It improves detection accuracy, reduces false positive and false negative rates, broadens the range of applications, and enables efficient and stable multi-specification product testing, thus avoiding component damage.

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Abstract

The invention provides a PCB deviation detection method, and relates to the technical field of PCB detection, and the method comprises the following steps: S1, inputting a standard template; s2, acquiring a terminal area image of the to-be-detected panel, and analyzing recognizable fixed technical features; s3, comparing the associated parameters of the fixed technical features with the parameters of the standard template, and calculating an offset value; s4, judging whether the deviation value is within a qualified range or not; meanwhile, the detection method supports the combination of PCBs and FPCs with different characteristics in a terminal area, and by calculating X and Y bidirectional deviation values, the adaptive range is widened, the detection precision is improved, and the missing detection and false detection rate is reduced.
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