Method for processing signals supplied by road surface piezoelectric pressure sensors enables determination of axle velocities for a vehicle as well as vehicle average velocity and acceleration

摘要

The method for determination of the velocity of a vehicle travelling along a road equipped with at least two linear coaxial piezoelectric sensor arranged perpendicular to the traffic and parallel to each other. Each sensor signal is digitally sampled and from the resulting pressure signals the points at which vehicle axles have crossed the sensors can be determined. Average speed values for each axle, for the vehicle and the vehicle acceleration can be determined from the signals. An Independent claim is included for a system for implementing the above method.