| 王栋， 许涛， 高齐， 吴季聪， 甘露.基于稀疏光流法的结构多点振动位移测量方法[J].轻工机械,2025,43(6):79-84 |
| 基于稀疏光流法的结构多点振动位移测量方法 |
| Structural Multi Point Vibration Displacement Measurement Method Based on Sparse Optical Flow |
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| DOI：10.3969/j.issn.1005 2895.2025.06.011 |
| 中文关键词: 测量 振动位移 稀疏光流法 虚拟标记 特征点 振动台 |
| 英文关键词:测量 振动位移 稀疏光流法 虚拟标记 特征点 振动台 |
| 基金项目:陕西省自然科学基础研究计划(2025JC YBMS 406)。 |
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| 摘要点击次数: 15 |
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| 中文摘要: |
| 为解决传统基于计算机视觉的结构振动位移测量方法中存在的需要人工标记及多点测量效率低等问题，课题组提出了一种基于稀疏光流法的结构多点振动位移测量方法。针对传统视觉位移测量法需要使用人工标记的问题，课题组采用虚拟标记的测量方法，从图像中提取特征作为虚拟标记，虚拟标记可以根据场景进行选择；针对多点同步测量问题，通过结合稀疏光流法与特征点检测算法实现多点同步振动位移测量。在实验室搭建3层钢结构框架进行特征点水平方向位移测量实验，将课题组提出的方法的测量结果与传统位移传感器测量结果进行比较；并在实验室振动台测量弹簧5个特征点竖直方向的振动位移。实验结果表明：课题组提出方法可以同步测得多点的振动位移，最大误差为0.4 mm，满足测量的精度要求。 |
| 英文摘要: |
| In order to solve the problems of manual marking and low efficiency of multi point measurement in traditional structural vibration displacement measurement methods based on computer vision, the research group proposed a structural multi point vibration displacement measurement method based on Sparse Optical Flow. Aimingat the problem that in traditional vision based displacement measurement methodsneeded to use artificial markers, the research group usedvirtual markersmeasurement method to extract features from images as virtual markers, which could be chosen based on the scene. To tackle the issue of multi point synchronous measurement, multi point synchronous vibration displacement measurement was realized by combining Sparse Optical Flow and feature point detection algorithm.A three layer steel frame structure was constructed in the laboratory for experimental validationto carry out the horizontal displacement measurement experiment of feature points. The measurement results of the method proposed by the research group were compared with those measured by traditional displacement sensors. Subsequently, the vibration displacement of the five characteristic points of the spring in the vertical direction was measured on the laboratory shaking table.The experimental results show that the proposed method can simultaneously measure the vibration displacement data at multiple positions, with a maximum error of 04 mm, meeting the accuracy requirements for measurement and application. |
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