用于混凝土结构健康监测的超声系统的设计与性能分析。
Design and Performance Analysis of an Ultrasonic System for Health Monitoring of Concrete Structure.
机构信息
Key Laboratory for Technology in Rural Water Management of Zhejiang Province, College of Electrical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China.
School of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310018, China.
出版信息
Sensors (Basel). 2021 Oct 3;21(19):6606. doi: 10.3390/s21196606.
The development and research of an ultrasonic-based concrete structural health monitoring system encounters a variety of problems, such as demands of decreasing complexity, high accuracy, and extendable system output. Aiming at these requirements, a low-cost extendable system based on FPGA with adjustable system output has been designed, and the performance has been evaluated by different assessment parameters set in this paper. Besides the description of the designed system and the experiments in air medium, the residual similarity and Pearson correlation coefficients of experimental and theoretical data have been used to evaluate the submodules' output. The output performance of the overall system is evaluated by the Pearson correlation coefficient, root-mean-square error (RMSE), and magnitude-squared coherence with 40 experimental data. The maximum, median, minimum, and mean values in three-parameter datasets are analyzed for discussing the working condition of the system. The experimental results show that the system works stably and reliably with tunable frequency and amplitude output.
基于超声的混凝土结构健康监测系统的开发和研究遇到了各种问题，例如降低复杂性、高精度和可扩展系统输出的需求。针对这些要求，设计了一种基于 FPGA 的低成本可扩展系统，该系统具有可调节的系统输出，并通过本文设置的不同评估参数来评估其性能。除了对设计系统的描述和在空气介质中的实验，还使用实验和理论数据的剩余相似性和 Pearson 相关系数来评估子模块的输出。通过 40 个实验数据，使用 Pearson 相关系数、均方根误差 (RMSE) 和幅度平方相干性来评估整个系统的输出性能。通过分析三个参数数据集的最大值、中位数、最小值和平均值来讨论系统的工作条件。实验结果表明，该系统具有稳定可靠的工作性能，可实现频率和幅度输出的调节。
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