| 谢鵾,雷冬*,杜文康,白鹏翔,朱飞鹏.不同激励下基于边缘检测方法的多根拉索振动频率的同步测量[J].实验力学,2022,37(1):41~51 |
| 不同激励下基于边缘检测方法的多根拉索振动频率的同步测量 |
| Determination of optimal point for stay-cable vibration measurement by edge detection |
| 投稿时间：2021-04-21 修订日期：2021-06-03 |
| DOI：10.7520/1001-4888-21-096 |
| 中文关键词: 数字图像 边缘检测 桥梁健康监测 振动频率法 环境激励 |
| 英文关键词:digital image, edge detection, bridge health monitoring, vibration frequency method, ambient excitation |
| 基金项目:国家自然科学基金(U1765204, 51679078)资助 |
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| 中文摘要: |
| 本文将边缘检测方法应用于拉索振动的多点测量,开展了人工激励和环境激励两种状况下的拉索振动测量实验,探究了不同测点位置对测量结果的影响。通过比较不同测点位置的实验结果,确定了拉索在不同激励状态下的最佳测点,并基于最佳测点对多根拉索进行同步测量,进一步提高了测量效率。同时,将边缘检测方法测量结果与传感器数据进对比,结果显示两种方法的偏差率约为3%,表明边缘检测方法具有较好的测量精度,能够满足工程实际的需求。 |
| 英文摘要: |
| In this paper, edge detection method was applied to the multi-point measurement of cable vibration. The cable vibration measurement experiments under artificial and environmental excitation were carried out to explore the influence of various measuring points on the measurement results. By comparing the experimental results of various detection points, the optimal detection points of cables under different excitation states were determined and multiple cables were synchronously measured with the optimal detection points, which further improved the measurement efficiency. At the same time, the measurement results of the edge detection method were compared with the sensor and the results show that the error rate of the two methods is about 3%, which means the edge detection method has good measurement accuracy and can meet the needs of engineering practice. |
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