Inertial Sensor Sample Rate Selection for Ride Quality Measures
Publication: Journal of Infrastructure Systems
Volume 21, Issue 2
Abstract
The road impact factor is a measure of ride quality. It is derived from the average inertial response of vehicles to road roughness. Unlike the international roughness index, the most common measure, the road impact factor does not rely on specialized instrumentation to measure spatial deviations from a flat profile. The most significant advantage of the road impact factor is that low-cost sensors distributed in smartphones and connected vehicles generate the measurements directly. Standardizing the sample rate of inertial sensors in vehicles will provide consistent measures at any speed. This study characterizes the impact of sample rate and traversal volume on measurement consistency, and conducts case studies to validate the theories developed for a recommended standard at 64 Hz.
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Acknowledgments
This work is based on research supported by the United States Department of Transportation (USDOT) Research and Innovative Technology Administration (RITA) under the Rural Transportation Research Initiative.
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Information & Authors
Information
Published In
Journal of Infrastructure Systems
Volume 21 • Issue 2 • June 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Sep 2, 2013
Accepted: May 23, 2014
Published online: Jul 7, 2014
Discussion open until: Dec 7, 2014
Published in print: Jun 1, 2015
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