Abstract
Abstract Structural Health Monitoring (SHM) programs play an essential task in the field of civil engineering, especially for assessing safety conditions involving large structures such as viaducts, bridges, stadiums, and tall buildings. In fact, some of these structures are monitored 24 hours a day, 7 days a week, to supply dynamic measurements that can be used for the identification of structural problems, e.g., presence of cracks, excessive vibration, damage, among others. SHM programs may provide automated assessment of structural health by processing vibration data obtained from sensors attached to the structure. Frequently, SHM uses wired systems, which are usually expensive due to the necessity of continuous maintenance and are not always suitable for sensing remote structures. Conversely, commercial wireless systems often demand high implementation costs. Hence, this paper proposes the use of a low-cost wireless sensing system based on the single board computer Raspberry Pi, which significantly reduces implementation expenses while keeping data’s integrity. The wireless communication is performed in real-time through a local wireless network, responsible for sending and receiving vibration data. The proposed system is validated by comparing its results with a commercial wired system through a series of controlled experimental applications. The results suggest that the proposed system is suitable for civil SHM applications.
Highlights
The assessment of vibration tests performed on structural systems has great practical importance for Civil Engineering
Some structures are monitored 24 hours a day, 7 days a week, to supply dynamic measurements that can be used for the identification of structural problems, such as the presence of cracks [7], [8], excessive vibration [9]–[11], damage identification [12]–[15], among others
The proposed system is validated by comparing its results with a commercial wired system through benchmark experimental applications performed in laboratory
Summary
The assessment of vibration tests performed on structural systems has great practical importance for Civil Engineering. Abdelgawad and Yelamarthi [23] presented the importance of the Internet of Things concept for Structural Integrity Monitoring system based on the connectivity of sensors to the worldwide computer network To this end, it proposes the use of a prototype based on Raspberry Pi 2 for the detection of damage in aluminum plates. A couple of works pointed in this direction, such as Shachi and Manjunatha [25] and Chandankhede [26] In this sense, this paper presents a study to explore the potentialities and verify the suitability of low-cost sensors as replacements to commercial wired accelerometers in specific testing scenarios. The proposed system is validated by comparing its results with a commercial wired system through benchmark experimental applications performed in laboratory
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