Publications

@inproceedings{Thompson2021,
title = {Validation of deflection monitoring for ancillary traffic structures via wireless accelerometers},
author = {D C Thompson and Rodrigo Sarlo and M H Hebdon},
doi = {10.1007/978-3-030-47634-2_15},
issn = {21915652},
year = {2021},
date = {2021-01-01},
booktitle = {Conference Proceedings of the Society for Experimental Mechanics Series},
abstract = {textcopyright 2021, The Society for Experimental Mechanics, Inc. Large ancillary structures (e.g., traffic lights, light poles, signage structures) are prone to unusual or extreme dynamic behavior, especially during high winds events. The associated risks of fatigue failure and distractions to drivers require long-term dynamic monitoring solutions. Some of the major obstacles to wide-spread deployment are that traditional wired methods require lengthy lane closures, extensive data storage, and may measure only a single axis of vibration. This motivates the need for alternatives that are both easy to deploy and intuitive to interpret. The accuracy of the Embedor Technology XNode Smart Sensor for these purposes was studied using a 20-foot cantilevered traffic pole in the Thomas M. Murray Structures Lab at Virginia Tech. A double integrating and filtering approach was tested to estimate displacement from the acceleration readings and found to have a maximum uncertainty of one eighth of an inch when compared to a laser displacement sensor. The XNode's ability to integrate other hardware, perform data processing on the edge, communicate on its own wireless network and provide accurate displacement estimates has potential to unseat the current state of the art for dynamic monitoring of ancillary traffic structures.},
keywords = {Acceleration monitoring, Ancillary traffic structures, Dynamic response, Fatigue, Lifetime safety, Mast arm, Oscillation},
pubstate = {published},
tppubtype = {inproceedings}
}