采用基于频率过和梯度检测的落重偏流量计校准方法提取撞击信号
Jiacheng Cai1, Yingchao Luo1, Bing Zhang1
1Research Institute of Highway, Ministry of Transport, Beijing 100088, China.
Sensors (Basel, Switzerland)
|September 19, 2025
概括
本研究引入了一种新的方法,用于在高速公路的非破坏性测试 (NDT) 中识别撞击点. 通过结合频率过和梯度检测,它即使在杂的环境中也能准确地定位撞击信号,从而改善路面承载能力评估.
科学领域:
- 土木工程 土木工程是指土木工程.
- 地质技术工程 地质技术工程
- 信号处理 信号处理
背景情况:
- 落重量偏流仪 (FWD) 对于非破坏性高速公路测试至关重要.
- 准确的撞击信号识别对于FWD校准和路面分析至关重要.
- 现有的方法与噪声干扰作斗争,影响FWD结果的准确性.
研究的目的:
- 在FWD测试中开发一种用于精确识别撞击点的新方法.
- 在噪音条件下克服当前方法的局限性.
- 提高路面承载能力评估的可靠性.
主要方法:
- 使用FFT和STFT识别冲击信号频率的频率域分析.
- 通过IFFT重建信号以抑制噪声.
- 梯度检测用于准确确定撞击启动时刻.
主要成果:
- 拟议的方法准确地识别了冲击点,即使在显著的噪音干扰下.
- 模拟和比较实验验证方法的有效性.
- 改进的信号识别导致更可靠的FWD数据.
结论:
- 新的频率过和梯度检测方法提高了FWD测试中的冲击点识别精度.
- 这种技术为各种工程冲击测试提供了强大的环境适应性.
- 该方法为FWD测量和路面分析提供可靠的数据支持.
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