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Sensors 2012, 12(11), 15192-15205; doi:10.3390/s121115192
Article

Dynamic Tire Pressure Sensor for Measuring Ground Vibration

1,* , 2
 and 3,*
1 Department of Electrical and Computer Engineering, Northeastern University, Boston, MA 02115, USA 2 Department of Mechanical Engineering, Boston University, Boston, MA 02215, USA 3 Department of Civil and Environmental Engineering, Northeastern University, Boston, MA 02115, USA
* Authors to whom correspondence should be addressed.
Received: 18 September 2012 / Revised: 2 November 2012 / Accepted: 2 November 2012 / Published: 7 November 2012
(This article belongs to the Section Physical Sensors)
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Abstract

This work presents a convenient and non-contact acoustic sensing approach for measuring ground vibration. This approach, which uses an instantaneous dynamic tire pressure sensor (DTPS), possesses the capability to replace the accelerometer or directional microphone currently being used for inspecting pavement conditions. By measuring dynamic pressure changes inside the tire, ground vibration can be amplified and isolated from environmental noise. In this work, verifications of the DTPS concept of sensing inside the tire have been carried out. In addition, comparisons between a DTPS, ground-mounted accelerometer, and directional microphone are made. A data analysis algorithm has been developed and optimized to reconstruct ground acceleration from DTPS data. Numerical and experimental studies of this DTPS reveal a strong potential for measuring ground vibration caused by a moving vehicle. A calibration of transfer function between dynamic tire pressure change and ground acceleration may be needed for different tire system or for more accurate application.
Keywords: non-contact; instantaneous; dynamic tire pressure sensor; ground acceleration; pavement condition non-contact; instantaneous; dynamic tire pressure sensor; ground acceleration; pavement condition
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Wang, Q.; McDaniel, J.G.; Wang, M.L. Dynamic Tire Pressure Sensor for Measuring Ground Vibration. Sensors 2012, 12, 15192-15205.

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