| 杨志,钟其仁.基于计算机视觉的桥梁健康监测数据异常检测[J].安徽建筑大学学报,2024,32(6):58-65 |
| 基于计算机视觉的桥梁健康监测数据异常检测 |
| Anomaly Detection of Bridge Health Monitoring Data Based on Computer Vision |
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| DOI： |
| 中文关键词: 数据异常 时频分析 计算机视觉 桥梁健康监测 |
| 英文关键词: data anomalies time-frequency analysis computer vision bridge health monitoring |
| 基金项目:国家自然科学基金资助项目（51878234） |
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| 摘要点击次数: 2419 |
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| 中文摘要: |
| 针对桥梁健康监测系统中因设备故障、环境影响等导致部分监测数据产生异常，将时频分析和计算机视觉相结合，用于监测数据的异常检测。首先根据监测数据时域图像对其进行类型划分和标记，采用时频分析法实现监测数据样本可视化，制备图像数据库用于构建和训练深度神经网络模型。然后利用深度学习框架搭建ResNet18神经网络模型，通过反向传播机制和 Adam优化算法优化模型权重参数，使用批标准化、数据增强等方法提高模型准确率和泛化能力。最后使用完成训练的模型对桥梁监测数据样本进行异常检测，验证模型性能。结果表明，所提方法对监测数据异常检测准确率为95.62%，对其他桥梁的监测数据样本检测准确率为95.28%，具有良好的稳定性和识别性能。 |
| 英文摘要: |
| In order to identify the abnormal monitoring data caused by equipment failures and environmental influences in the bridgehealth monitoring system, a combined approach of time-frequency analysis and computer vision is proposed for anomaly detection. Themonitoring data are categorized based on its time-domain images and are visualized by the time-frequency analysis method, then animage database was built for the deep neural network model training. Subsequently, a ResNet18 neural network model is built using adeep learning framework. The model′s weight parameters are optimized through the backpropagation mechanism and the Adam optimizationalgorithm, and the accuracy as well as generalization are improved using methods such as batch normalization and data augmentation.Finally, the trained model is applied to detect anomalies in other bridge monitoring data samples, further validating its performance.The results show that the proposed method achieves an accuracy of 95.62% in detecting abnormal monitoring data and 95.28% indetecting other bridge monitoring data samples, demonstrating good stability and recognition performance. |
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