基于视觉识别的产品平整度质量检测处理系统及方法

By combining a visual recognition system with convolutional neural networks and fractal calculations, the problem of low detection accuracy for complex surfaces has been solved, enabling high-precision flatness detection of steel plate surfaces and ensuring product quality.

CN120740502BActive Publication Date: 2026-07-17NANJING HEXIN AUTOMATION CO LTD +2

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING HEXIN AUTOMATION CO LTD
Filing Date
2025-06-06
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing inspection technologies based on structured light and triangulation cannot accurately detect the flatness of steel plate surfaces when faced with complex defects, especially in the presence of oil stains, rust, edge laser cutting slag, and surface scratches, which leads to a decrease in inspection accuracy and fails to meet the requirements of high precision and high automation.

Method used

A product flatness quality inspection system based on vision recognition is adopted. Combining convolutional neural network algorithm and fractal dimension calculation, image data is acquired through a structured light camera to identify patch features and defects on the workpiece surface. Numerical interpolation of defect areas is performed through an LSTM model. Combined with fractal calculation and reflectivity correction, the inspection accuracy is improved.

Benefits of technology

It significantly improves the detection accuracy of complex surfaces, reduces errors caused by vibration and uneven speed, accurately identifies complex patch features such as oil stains and rust, improves the accuracy and precision of detection, and ensures product quality.

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Abstract

本发明公开了一种基于视觉识别的产品平整度质量检测处理系统及方法,系统包括底部支撑机构、板材输送单元和检测单元,解决了金属板材输送振动和速度不均匀影响检测精度的问题。方法部分首先通过卷积神经网络算法实现缺陷分类,接着采用分形维数分析提图像特征,有效识别油渍、锈迹等对检测精度的影响。进一步使用长短期记忆网络(LSTM)对缺陷区域数值插补预测,最后构建综合评估模型,输出量化结果。本发明实现检测流程的闭环,抗干扰能力强,单件检测时间≤3秒,识别准确率≥98.5%,平整度评估误差≤0.05mm,可广泛应用于金属板材、机械零部件等工业产品的高效质量检测。
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