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基于压电直写换能器和边缘计算处理的主动超声结构健康监测

Active Ultrasonic Structural Health Monitoring Enabled by Piezoelectric Direct-Write Transducers and Edge Computing Process.

机构信息

Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore 138634, Singapore.

Institute of Microelectronics (IME), Agency for Science, Technology and Research (A*STAR), Singapore 138634, Singapore.

出版信息

Sensors (Basel). 2022 Jul 30;22(15):5724. doi: 10.3390/s22155724.

DOI:10.3390/s22155724
PMID:35957282
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9370873/
Abstract

While the active ultrasonic method is an attractive structural health monitoring (SHM) technology, many practical issues such as weight of transducers and cables, energy consumption, reliability and cost of implementation are restraining its application. To overcome these challenges, an active ultrasonic SHM technology enabled by a direct-write transducer (DWT) array and edge computing process is proposed in this work. The operation feasibility of the monitoring function is demonstrated with Lamb wave excited and detected by a linear DWT array fabricated in situ from piezoelectric P(VDF-TrFE) polymer coating on an aluminum alloy plate with a simulated defect. The DWT array features lightweight, small profile, high conformability, and implementation scalability, whilst the edge-computing circuit dedicatedly designed for the active ultrasonic SHM is able to perform signal processing at the sensor nodes before wirelessly transmitting the data to a remote host device. The successful implementation of edge-computing processes is able to greatly decrease the amount of data to be transferred by 331 times and decrease the total energy consumption for the wireless module by 224 times. The results and analyses show that the combination of the piezoelectric DWT and edge-computing process provides a promising technical solution for realizing practical wireless active ultrasonic SHM system.

摘要

虽然主动超声方法是一种有吸引力的结构健康监测 (SHM) 技术，但许多实际问题，如换能器和电缆的重量、能量消耗、可靠性和实施成本，限制了其应用。为了克服这些挑战，本工作提出了一种由直接写入换能器 (DWT) 阵列和边缘计算处理启用的主动超声 SHM 技术。通过在铝合金板上原位制造的线性 DWT 阵列激励和检测兰姆波，演示了监测功能的操作可行性，该 DWT 阵列具有重量轻、体积小、高适应性和实施可扩展性，而专门为主动超声 SHM 设计的边缘计算电路能够在将数据无线传输到远程主机设备之前在传感器节点上执行信号处理。成功实现边缘计算过程能够将要传输的数据量减少 331 倍，并将无线模块的总能耗减少 224 倍。结果和分析表明，压电 DWT 和边缘计算处理的结合为实现实用的无线主动超声 SHM 系统提供了有前途的技术解决方案。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/e771e9d4d2ab/sensors-22-05724-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/a95212a80033/sensors-22-05724-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/f90d2c5d62ae/sensors-22-05724-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/a9650a6b0aaf/sensors-22-05724-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/00b6169ce269/sensors-22-05724-g004a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/a9b54d314c14/sensors-22-05724-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/b07f8061daf3/sensors-22-05724-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/d61259d6d216/sensors-22-05724-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/e771e9d4d2ab/sensors-22-05724-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/a95212a80033/sensors-22-05724-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/f90d2c5d62ae/sensors-22-05724-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/a9650a6b0aaf/sensors-22-05724-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/00b6169ce269/sensors-22-05724-g004a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/a9b54d314c14/sensors-22-05724-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/b07f8061daf3/sensors-22-05724-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/d61259d6d216/sensors-22-05724-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e5/9370873/e771e9d4d2ab/sensors-22-05724-g008.jpg

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