In this work, sensor devices were created for use in seismic observation to better comprehend damage following earthquakes, as well as structural health monitoring for building and civil infrastructure maintenance. Sensor devices must be densely deployed across a big area and measurement data with synchronised time must be gathered in order for them to be utilised. Even when no network or Global Positioning System (GPS) signals are available, it is ideal if the sensor devices themselves preserve precise time information. As a consequence, a sensor device was developed that maintains correct time information on its own using a Chip Scale Atomic Clock (CSAC), which is an ultra-high accuracy clock that requires very little power and can be put on a tiny board. The CSAC is described in this publication, as well as a method for utilising it to add very precise time information to measured data. The paper then goes into the development process from prototype to practical device, as well as improved findings to address difficulties encountered in actual bridge use. This study introduces a novel method for synchronising time between devices. In addition, the communication system for measurement data that was recently built using "fluentd," an open source data collecting programme, is described in detail. Finally, the research uses a case study to show the applicability of the new sensor device, in which seismic observation and structural health monitoring were implemented in a real-world building using the enhanced sensors. The practical gadget created in this study for autonomous time synchronisation allowed for the monitoring of the building's structural health based on the evaluation of inter-story deformation.
Narito Kurata,
Faculty of Industrial Technology, Tsukuba University of Technology, Tsukuba City, Ibaraki, Japan.
Please see the link here: https://stm.bookpi.org/RDST-V2/article/view/6607
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