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Using Micro-Electro-Mechanical Systems MEMS to Develop Diagnostic Tools
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Developing and Testing High-Performance SHM Sensors Mounting Low-Noise MEMS Accelerometers.

Marianna Crognale1, Cecilia Rinaldi1, Francesco Potenza2

  • 1Department of Structural and Geotechnical Engineering, Sapienza University of Rome, Via Eudossiana 18, 00184 Roma, Italy.

Sensors (Basel, Switzerland)
|April 27, 2024
PubMed
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Micro-electrical mechanical system (MEMS) accelerometers offer a cost-effective, low-power solution for structural health monitoring (SHM). These sensors accurately detect modal frequencies, enabling continuous structural assessment and damage detection.

Area of Science:

  • Engineering
  • Materials Science
  • Computer Science

Background:

  • Increasing demand for continuous structural health monitoring (SHM) necessitates advanced sensing technologies.
  • Micro-electrical mechanical system (MEMS) sensors offer advantages like low cost, ease of installation, and reduced power consumption for SHM applications.

Purpose of the Study:

  • To present an innovative, high-performance MEMS accelerometer device for SHM.
  • To provide guidelines and results on the capabilities of MEMS devices for structural vibration monitoring and modal identification.

Main Methods:

  • Design, development, and calibration of low-noise triaxial MEMS accelerometer sensor nodes.
  • Implementation of a reliable network protocol for command dissemination and data collection.
  • Software improvements for data pipelining, jitter control, and high-frequency sampling.
Keywords:
SHM-boardinternet of thingsstructural health monitoringultra-low-power micro-controller

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  • Laboratory testing using shaker excitation and a real-world case study deployment.

    • Main Results:

    • MEMS accelerometers are a viable, cost-effective alternative to traditional piezo-based sensors.
    • MEMS deployment significantly minimizes sensor node energy consumption.
    • Accurate detection of modal frequencies for damage assessment was demonstrated.
    • The proposed network architecture successfully provided dense and accurate vibration data in a real case study.

    Conclusions:

    • MEMS-based accelerometers are a feasible and promising technology for pervasive structural health monitoring.
    • The developed system enables continuous structural assessment with reduced energy consumption and cost.
    • The successful deployment validates the robustness and accuracy of the MEMS sensor network for real-world applications.