Application of Cement-Based Piezoelectric Sensors for Monitoring Traffic Flows
Publication: Journal of Transportation Engineering
Volume 132, Issue 7
Abstract
In this paper, the preliminary application of a new type of cement-based piezoelectric sensor developed recently for monitoring the traffic flows is proposed and investigated. The sensor was made by bonding between two cubes of hardened cement sand paste with a commercially available piezoelectric ceramic plate encapsulated by a new sealant developed especially for the sensor’s fabrication, and its property was tested by dynamic loadings including harmonic loading, random loading, and pulse loading. Two experiments were carried out to prove the feasibility and reliability of the sensor for monitoring the traffic flows including the person flow and the vehicle flow in the field of transportation. The tested results show that the sensors can correctly respond to the pulse loadings induced by walking person or passing vehicle and the responses of sensors were approximately direct proportional to the peak values of pulse loadings. A conclusion is given that there is a good potential for the cement-based piezoelectric sensor in the engineering application for monitoring traffic flows in the field of transportation.
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Acknowledgments
The financial support from the National Science Fund for Distinguished Young Scholars of China under Grant No. 50425824 and from Hong Kong Research Grant Council to HKUST under Grant No. HKUST 6212/O2E are greatly acknowledged.
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 132 • Issue 7 • July 2006
Pages: 565 - 573
Copyright
© 2006 ASCE.
History
Received: Jul 25, 2005
Accepted: Nov 4, 2005
Published online: Jul 1, 2006
Published in print: Jul 2006
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