Moreover, continuously measured data can contribute to improved modeling and analytics resulting in prolonged system service life and reduced life cycle costs ( Barroca et al., 2013 Buenfeld, Davis, Karmini, & Gilbertson, 2008 McCarter & Vennesland, 2004). An early warning could avoid unnecessary costs to the maintenance programs. Over past decades, SHM has been widely used in civil engineering infrastructure to monitor structural integrity failures such as cracks, structural deterioration, and steel corrosion. In recent years, these kinds of technologies are extensively applied in civil engineering infrastructure to measure the changes in material and geometric properties for serviceability assessment, which is referred to as structural health monitoring (SHM). Like many advanced technologies, wireless sensor technologies were initially developed and deployed for military and industrial purposes (SILICON LABS, 2015). This will be a useful feature for highway engineers performing routine pavement scans from the pavement shoulder without the need for traffic control or road closure. A success-rate test was performed after the wireless transmission system was buried in the concrete slab, and the test results indicated that the system was able to provide reliable communications at a distance of more than 46 m (150 feet).
This study explored the development and integration of a wireless communications sub-system into a commercial off-the-shelf micro-electromechanical sensor-based concrete pavement monitoring system. With advancements in wireless technologies, integration of wireless communications into sensing device is considered an alternate and superior solution to existing time- and labor-intensive wired sensing systems in meeting the requirements of an ideal SHMM.
Key requirements in ideal SHMM of road infrastructure include long-term, continuous, and real-time monitoring of pavement response and performance under various pavement geometry-materials-loading configurations and environmental conditions. In recent years, structural health monitoring and management (SHMM) has become a popular approach and is considered essential for achieving well-performing, long-lasting, sustainable transportation infrastructure systems.
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