一种基于深度估计的铁路扣件松紧度检测方法

By using a depth estimation-based method for detecting the tightness of railway fasteners, and combining two-dimensional and depth images with ZoeDepth and YOLOv8 models, the method solves the problems of low efficiency of manual inspection and high cost of three-dimensional scanning, and achieves low-cost and rapid automated detection of fastener tightness.

CN118711015BActive Publication Date: 2026-07-17CENT SOUTH UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CENT SOUTH UNIV
Filing Date
2024-06-21
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, the detection of the tightness of railway fasteners relies on manual inspection, which is inefficient, costly, and has a high rate of missed detection. Furthermore, image-based machine vision methods cannot identify tightness, and 3D scanning sensor equipment is expensive and requires a large amount of computing resources.

Method used

A method for detecting the tightness of railway fasteners based on depth estimation is adopted. By acquiring two-dimensional and depth images of the track structure, and combining the ZoeDepth model and the YOLOv8 model, an absolute depth distribution and track two-dimensional image annotation model are constructed to achieve automated detection of fastener tightness.

Benefits of technology

It enables low-cost, fast, and accurate detection of railway fastener tightness, reduces hardware costs and computing resource requirements, and is suitable for automated inspection of track inspection trolleys.

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Abstract

本发明公开了一种基于深度估计的铁路扣件松紧度检测方法,包括以下步骤:获取轨道结构二维图像和对应的深度图像,作为深度训练数据集;使用得到的轨道结构二维图像,标注扣件的弹条和螺栓区域,得到轨道标注训练数据集;构建绝对深度分布初始模型;构建轨道二维图像标注初始模型;采用深度训练数据集训练绝对深度分布初始模型,得到绝对深度分布模型;采用标注训练数据集训练轨道二维图像标注初始模型,得到轨道二维图像标注模型;根据得到的绝对深度分布模型和轨道二维图像标注模型,进行实际的铁路扣件松紧度检测。本发明方法所需硬件成本低、计算资源少,只需要标准相机得到的轨道结构二维图像即可实现松动扣件自动化检测。
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