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Design of a Scalogram-Based Data Acquisition and Processing System for a Multi-sensor Network Application for Marine Structures

  • Xuan-Phuong Nguyen,
  • Xuan-Kien Dang,
  • Le Anh-Hoang Ho,
  • Hoang-Minh Luu,
  • Ngoc-Truc Nguyen

摘要

Offshore maritime structural systems must be monitored for safety concerns to provide warnings and perform maintenance and repair work on schedule. Because marine structures are usually affected by a variety of factors, including earthquakes and environmental aspects, this activity is crucial (waves, wind, and currents). The purpose of early structural damage detection is to avoid significant damage that might lead to loss of life or property. Besides, with the support of a multipoint sensor network, we develop a data collection and processing system in this study, and we investigate how to extract scalogram images from the wavelet transform of the signals the sensor sends out to evaluate the state of the Offshore Jacket Platform structure. The efficiency of the proposed strategy has been demonstrated using an embedded model in MATLAB running on the STM32 NucleoF411RE central processor that collects vibration signals from the accelerometer through an Offshore Jacket Platform-installed multi-sensor network.