The Fibre Arrays Coordinate Mapping Method for Pavement Using Vibration Data
In order to accurately obtain the spatial and temporal multidimensional distribution data of pavement vibration under the monitoring of fibre-optic arrays,it is necessary to ensure the accuracy of the mapping relationship between the coordinates of fibre-optic arrays and fibre-optic measurement points,so as to achieve the purpose of investigating the vibration state of the pavement and the extrac-tion of loading characteristics.In order to make up for the problem that it is difficult to improve the mapping reliability of the traditional forward deduction method,the study evaluates the response simi-larity of the array unit mapping combinations through the measured vibration data features,and ob-tains the array unit mapping combinations with great likelihood estimation by Monte Carlo simulation to achieve the accurate inversion of fibre-optic array unit coordinates.The measured validation results show that the standard deviation of the vibration data output by this method is less than 0.04 s in the cross-section phase,which is a significant improvement over the traditional method.The research method and results provide a solid foundation for the promotion of the vibration array sensing method based on distributed optical fibre technology in production applications.
万方数据
维普
