Development of a Self-Powered Weigh-In-Motion (WIM) System

This study further develops a roadside piezoelectric energy harvesting system. The basic sensing element is a stack of 6 piezoelectric disks, 1-inch in diameter, connected in parallel. A set of 4 of these stacks supports a metal load carrying plate installed flush with the pavement surface. These piezo stacks exhibited a linear voltage versus stress behavior that is relatively independent of loading frequency. This will allow estimating of axle loads. At the same time, these 4 piezoelectric stacks generate very high voltages (i.e., 100 Volts for a car axles and 800 Volts for a truck axle) but relatively low amperages (i.e., 10-100 mA depending on load level). The electrical power generated is sufficient to keep the rechargeable batteries on site sufficiently charged to power at 3.3 V a microprocessor with a power consumption of 0.4 μA “dormant” and 40 μA “awake” (e.g., Analog Devices ADuCM4050). This dual-role for the piezo-stacks developed represents a leap forward in weigh-in-motion (WIM) technology. It will allow the development of a low cost WIM system that can operate off the electrical grid. This will provide state agencies a much better informed picture of the utilization of their roadway and bridge infrastructure.


  • English


  • Status: Completed
  • Funding: $100022
  • Contract Numbers:


  • Sponsor Organizations:

    Office of the Assistant Secretary for Research and Technology

    University Transportation Centers Program
    Department of Transportation
    Washington, DC  United States  20590
  • Managing Organizations:

    Transportation Consortium of South-Central States (Tran-SET)

    Louisiana State University
    Baton Rouge, LA  United States  70803
  • Project Managers:

    Melson, Christopher

  • Performing Organizations:

    University of Texas at Arlington

    Box 19308
    Arlington, TX  United States  76019-0308
  • Principal Investigators:

    Papagiannakis, Athanassios

    Dessouky, Samer

    Ahmed, Sara

  • Start Date: 20190815
  • Expected Completion Date: 20210215
  • Actual Completion Date: 0
  • USDOT Program: University Transportation Centers Program

Subject/Index Terms

Filing Info

  • Accession Number: 01713584
  • Record Type: Research project
  • Source Agency: Transportation Consortium of South-Central States (Tran-SET)
  • Contract Numbers: 69A3551747106
  • Files: UTC, RIP
  • Created Date: Aug 8 2019 8:01AM