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

Claim 20:
21. An inertial profiling system arranged to be used in cooperation with a vehicle, the inertial profiling system including one or more sensors configured to:
(a) receive data collected by the one or more sensors associated with the inertial profiling system while traveling over, or adjacent to, a surface during acceleration of the vehicle from a stop or a slow speed defined as 15 mph or less, the data collected by the one or more sensors associated with the inertial profiling system including:
vertical acceleration data of the vehicle that is converted to an inertial reference;
longitudinal data that is indicative of a 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 during the acceleration using the data collected by the one or more sensors associated with the inertial profiling system without a preceding lead-in distance or a minimum speed requirement, the valid surface profile generated by one or more processors by:
generating inertial profile data from the data collected by the one or more sensors associated with the inertial profiling system, 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 associated with the inertial profiling system, the running slope profile data having long wavelength running slope profile components and short wavelength running slope profile components; and
generate the valid surface profile of the surface during the acceleration by blending the short wavelength inertial profile components obtained from filtering the inertial profile data and the long wavelength running slope profile components obtained from filtering the running slope profile data,
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.