Patent ID: 9255913
Filing Date: 2016-02-09
CPC Classification: G01N

Claim Text:
1. A method comprising: sensing passively excited residual sounds of a vehicle system during travel over a route using one or more acoustic pickup devices, wherein a previous acoustic signature represents the passively excited residual sounds sensed during a period of time and a subsequent acoustic signature represents the passively excited residual sounds sensed subsequent to the period of time; examining the passively excited residual sounds to identify one or more changes of interest in the passively excited residual sounds using one or more processors of a deviation detection device operably connected with the one or more acoustic pickup devices, wherein the one or more chances of interest that are identified include one or more of: automatically identifying a section of the route as being damaged responsive to the one or more changes of interest in the passively excited residual sounds that are identified using one or more processors of an identification device.