Patent ID: 11858516
Assignee: SURFACE SYSTEMS AND INSTRUMENTS, INC.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 58:
59. An inertial profiling system arranged to be used in cooperation with a vehicle, the inertial profiling system having one or more sensors and one or more processors configured to:
(a) receive data collected by the one or more sensors while traveling over or adjacent a surface following deceleration of the vehicle to either a stop or a slow speed defined as 15 mph or less, the data collected by the one or more sensors including:
vertical acceleration data of the vehicle that is converted to an inertial reference;
longitudinal data that is indicative of the distance traveled by the vehicle; and
vertical height measurements of the vehicle to the surface as the vehicle travels over the surface; and
(b) generate a valid surface profile of the surface following the deceleration, without a minimum speed requirement or without a lead-out distance, the valid surface profile generated by using the one or more processors to process the data collected by the one or more sensors after the deceleration, the valid surface profile generated by:
generating inertial profile data from the data collected by the one or more sensors, the inertial profile data including long wavelength inertial profile components and short wavelength inertial profile components;
generating running slope profile data from the data collected by the one or more sensors, the running slope profile data having long wavelength running slope profile components and short wavelength running slope profile components;
obtaining the short wavelength inertial profile components from the inertial profile data by filtering and removing the long wavelength inertial profile components from the inertial profile data;
obtaining the long wavelength running slope profile components from the running slope profile data by filtering and removing the short wavelength running slope profile components from the running slope profile data; and
generate the valid surface profile of the surface following the deceleration by blending the short wavelength inertial profile components and the long wavelength running slope profile components,
wherein the short wavelength inertial profile components are shorter than the long wavelength inertial profile components and the short wavelength running slope profile components are shorter than the long wavelength running slope profile components.