中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2026, Vol. 45 ›› Issue (7): 67-75.DOI: 10.3969/j.issn.1674-0696.2026.07.08

• 智慧交通基础设施 • 上一篇    

基于SG-SVD和波动抑制的沥青路面FBG感知信号降噪研究

黄婷婷1,2,刘宇佼3,沈典栋4,廖梦回1,2,陈彧1,2,余鑫4   

  1. (1. 武汉理工大学 交通与物流工程学院,湖北 武汉 430063; 2. 湖北省公路工程技术研究中心,湖北 武汉 430063; 3. 武汉市工程咨询部有限公司,湖北 武汉 430014; 4. 湖北交投京港澳高速公路改扩建项目管理有限公司,湖北 武汉 430100)
  • 收稿日期:2025-01-12 修回日期:2026-04-13 发布日期:2026-07-21
  • 作者简介:黄婷婷(1992—),女,安徽六安人,讲师,博士,主要从事道路材料表面自由能理论方面的研究。E-mail:huangtingting@whut.edu.cn 通信作者:刘宇佼(2001—),女,湖南长沙人,硕士研究生,主要从事沥青路面智能监测方面的研究。E-mail:2359526609@qq.com
  • 基金资助:
    2022年湖北省交通运输厅科技项目(2022-11-2-5)

FBG sensing signal denoising of asphalt pavement based on SG-SVD and fluctuation suppression

Huang Tingting1,2,Liu Yujiao3, Shen Diandong4, Liao Menghui1,2, Chen Yu1,2, Yu Xin4   

  1. (1. School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan 430063, Hubei, China; 2. Hubei Provincial Highway Engineering Technology Research Center, Wuhan 430063, Hubei, China; 3. Wuhan Engineering Consulting Department Co., Ltd., Wuhan 430014, Hubei, China; 4. Hubei Communications Investment Group Beijing-Hong Kong-Macao Expressway Reconstruction and Extension Project Management Co., Ltd., Wuhan 430100, Hubei, China)
  • Received:2025-01-12 Revised:2026-04-13 Published:2026-07-21

摘要: 为了提高光纤光栅传感器(fiber bragg grating, FBG)监测沥青路面结构内应变场和温度场的信号质量,提出一种联合卷积平滑(savitzky-golay, SG)、奇异值分解(singular value decomposition, SVD)以及波形抑制的光纤光栅感知信号降噪处理方法:首先进行信号的卷积平滑处理,减少信号不必要的波动;接着进行奇异值分解,结合奇异值大小筛选出主要的信号特征模式,实现数据的降维以及噪声过滤处理;最后强化数据特征并抑制信号非本质波动,增强数据稳定性。采用该方法进行路面结构响应仿真信号以及沥青路面实测结构响应信号的降噪处理,实测信号的峰值信噪比(peak signal to noise ratio, PSNR)由115.60 dB升高到121.48 dB,有效信号被增强,无效信号被削弱。该方法能够有效提高信号的可信度,更加真实监测行车荷载作用下沥青路面结构内部应变响应的变化信息。

关键词: 道路工程;沥青混合料;信号降噪;卷积平滑;奇异值分解;信噪比

Abstract: To improve the signal quality of fiber Bragg grating (FBG) sensors in monitoring the strain and temperature fields within asphalt pavement structures, an FBG sensing signal denoising processing method combining Savitzky-Golay (SG), singular value decomposition (SVD) and waveform suppression was proposed. First, convolution smoothing of the signal was carried out to reduce unnecessary fluctuations. Next, singular value decomposition was carried out, and the main signal feature patterns based on the size of singular values were selected out, achieving data dimensionality reduction and noise filtering processing. Finally, the data features were strengthened and non-essential signal fluctuations were suppressed to enhance data stability. The proposed method was applied for noise reduction processing of simulated signals of pavement structure response and measured structural response signals of asphalt pavement. The peak signal-to-noise ratio (PSNR) of the field-measured signal increased from 115.60 dB to 121.48 dB, with effective signals enhanced and ineffective signals weakened. The proposed method can effectively improve the credibility of signals and more accurately monitor the changes in internal strain response of asphalt pavement structures under driving loads.

Key words: highway engineering; asphalt mixture; signal noise reduction; Savitzky-Golay (SG); singular value decomposition; signal-to-noise ratio

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