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开发一种低成本的结构振动精确测量系统。

Development of a Low-Cost System for the Accurate Measurement of Structural Vibrations.

机构信息

Department of Civil and Environment Engineering, Universitat Politècnica de Catalunya, BarcelonaTech. C/Jordi Girona 1-3, 08034 Barcelona, Spain.

Department of Civil Engineering, Universidad de Castilla-La Mancha, Av. Camilo Jose Cela s/n, 13071 Ciudad Real, Spain.

出版信息

Sensors (Basel). 2021 Sep 15;21(18):6191. doi: 10.3390/s21186191.

DOI:10.3390/s21186191
PMID:34577404
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8469511/
Abstract

Nowadays, engineers are widely using accelerometers to record the vibration of structures for structural verification purposes. The main obstacle for using these data acquisition systems is their high cost, which limits its use to unique structures with a relatively high structural health monitoring budget. In this paper, a Cost Hyper-Efficient Arduino Product (CHEAP) has been developed to accurately measure structural accelerations. CHEAP is a system that is composed of five low-cost accelerometers that are connected to an Arduino microcontroller as their data acquisition system. Test results show that CHEAP not only has a significantly lower price (14 times cheaper in the worst-case scenario) compared with other systems used for comparison but also shows better accuracy on low frequencies for low acceleration amplitudes. Moreover, the final output results of Fast Fourier Transformation (FFT) assessments showed a better observable resolution for CHEAP than the studied control systems.

摘要

如今，工程师广泛使用加速度计来记录结构的振动，以进行结构验证。使用这些数据采集系统的主要障碍是其成本高，这限制了其在具有相对较高结构健康监测预算的独特结构中的使用。在本文中，开发了一种成本超高效的 Arduino 产品（CHEAP），以准确测量结构加速度。CHEAP 是一个系统，由五个低成本的加速度计组成，它们连接到 Arduino 微控制器作为其数据采集系统。测试结果表明，与用于比较的其他系统相比，CHEAP 不仅价格显著更低（在最坏情况下便宜 14 倍），而且在低频和低加速度幅度下显示出更好的精度。此外，快速傅里叶变换（FFT）评估的最终输出结果表明 CHEAP 的可观察分辨率优于所研究的控制系统。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/02cb/8469511/e15e902f40f6/sensors-21-06191-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/02cb/8469511/a441d9f7c146/sensors-21-06191-g001a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/02cb/8469511/09e2412a54c6/sensors-21-06191-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/02cb/8469511/d5d269f63a5f/sensors-21-06191-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/02cb/8469511/08e87f817e9a/sensors-21-06191-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/02cb/8469511/fd81f149b59e/sensors-21-06191-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/02cb/8469511/3ba76a31f0e6/sensors-21-06191-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/02cb/8469511/e15e902f40f6/sensors-21-06191-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/02cb/8469511/a441d9f7c146/sensors-21-06191-g001a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/02cb/8469511/09e2412a54c6/sensors-21-06191-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/02cb/8469511/d5d269f63a5f/sensors-21-06191-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/02cb/8469511/08e87f817e9a/sensors-21-06191-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/02cb/8469511/fd81f149b59e/sensors-21-06191-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/02cb/8469511/3ba76a31f0e6/sensors-21-06191-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/02cb/8469511/e15e902f40f6/sensors-21-06191-g007.jpg

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