Imaging Components, Systems, and Processing

Remotely detected vehicle mass from engine torque-induced frame twisting

[+] Author Affiliations
Troy R. McKay, Carl Salvaggio, Jason W. Faulring, Glenn D. Sweeney

Rochester Institute of Technology, Chester F. Carlson Center for Imaging Science, College of Science, Digital Imaging and Remote Sensing Laboratory, Rochester, New York, United States

Opt. Eng. 56(6), 063101 (Jun 08, 2017). doi:10.1117/1.OE.56.6.063101
History: Received October 17, 2016; Accepted May 23, 2017
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Abstract.  Determining the mass of a vehicle from ground-based passive sensor data is important for many traffic safety requirements. This work presents a method for calculating the mass of a vehicle using ground-based video and acoustic measurements. By assuming that no energy is lost in the conversion, the mass of a vehicle can be calculated from the rotational energy generated by the vehicle’s engine and the linear acceleration of the vehicle over a period of time. The amount of rotational energy being output by the vehicle’s engine can be calculated from its torque and angular velocity. This model relates remotely observed, engine torque-induced frame twist to engine torque output using the vehicle’s suspension parameters and engine geometry. The angular velocity of the engine is extracted from the acoustic emission of the engine, and the linear acceleration of the vehicle is calculated by remotely observing the position of the vehicle over time. This method combines these three dynamic signals; engine induced-frame twist, engine angular velocity, and the vehicle’s linear acceleration, and three vehicle specific scalar parameters, into an expression that describes the mass of the vehicle. This method was tested on a semitrailer truck, and the results demonstrate a correlation of 97.7% between calculated and true vehicle mass.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Topics

Cameras ; Video

Citation

Troy R. McKay ; Carl Salvaggio ; Jason W. Faulring and Glenn D. Sweeney
"Remotely detected vehicle mass from engine torque-induced frame twisting", Opt. Eng. 56(6), 063101 (Jun 08, 2017). ; http://dx.doi.org/10.1117/1.OE.56.6.063101


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