Abstract
Structural health monitoring (SHM) can be more efficient with the application of a wireless sensor network (WSN). However, the hardware that makes up this system should have sufficient performance to sample the data collected from the sensor in real-time situations. High-performance hardware can be used for this purpose, but is not suitable in this application because of its relatively high power consumption, high cost, large size, and so on. In this paper, an optimal remote monitoring system platform for SHM is proposed based on pulsed eddy current (PEC) that is utilized for measuring the corrosion of a steel-framed construction. A circuit to delay the PEC response based on the resistance–inductance–capacitance (RLC) combination was designed for data sampling to utilize the conventional hardware of WSN for SHM, and this approach was verified by simulations and experiments. Especially, the importance of configuring sensing modules and the WSN for remote monitoring were studied, and the PEC responses caused by the corrosion of a specimen made with steel were able to be sampled remotely using the proposed system. Therefore, we present a remote SHM system platform for diagnosing the corrosion condition of a building with a steel structure, and proving its viability with experiments.
Highlights
Structural health monitoring (SHM), which evaluates the durability of building structures, diagnoses points with damage and finds their location by collecting data using a sensor system in real time [1].advanced methods were introduced to reconstruct the lost data for the preciseSHM. [2,3]
We propose a method for detecting the corrosion of a steel-framed construction with a convenient monitoring system using wireless sensor network (WSN)
pulsed eddy current (PEC) response must be measured to evaluate the amount of corrosion, but it is difficult to measure this with the hardware configuration generally used for WSNs. (Figure 1) a delay circuit designed to sample PEC responses, in order to compare the results from the hardware configuration of a conventional WSN system, is described
Summary
SHM, which evaluates the durability of building structures, diagnoses points with damage and finds their location by collecting data using a sensor system in real time [1]. There are severaloccurs technologies used to measure corrosion, following appropriate to use[12,13], multiple-frequency as input signals to pulse evaluate th methods: eddy current ground penetratingwaves radar (GPR). Deep inside a steel to detect the res corrosion, pulse input is applied for the steelfor structure, and the output the PEC but this the configuration is unsuitable application in an from actual situation t response should be measured. Therefo as an analog-to-digital converter (ADC) board, is used to measure response [28,29], but this configuration is unsuitable for application in an actual situation that requires a the PEC response is difficult when applying a conventional system for us low-power system, such as the typical WSN environment. Various analysis environments with a convenient user interface are provided in the hardware configurations
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