System and method for acoustically identifying damaged sections of a route
First Claim
Patent Images
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;
a step change representative of a decrease or elimination of one or more frequencies in the subsequent acoustic signature, wherein the one or more frequencies have greater magnitudes in the previous acoustic signature than in the subsequent acoustic signature, ora frequency change representative of a shift of one or more peaks from the one or more frequencies in the previous acoustic signature to one or more different frequencies in the subsequent acoustic signature; and
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.
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Abstract
A method for acoustically examining a route includes sensing passively excited residual sounds of a vehicle system during travel over a route, examining the passively excited residual sounds to identify one or more changes of interest in the passively excited residual sounds, and 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.
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Citations
20 Claims
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1. A method comprising:
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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; a step change representative of a decrease or elimination of one or more frequencies in the subsequent acoustic signature, wherein the one or more frequencies have greater magnitudes in the previous acoustic signature than in the subsequent acoustic signature, or a frequency change representative of a shift of one or more peaks from the one or more frequencies in the previous acoustic signature to one or more different frequencies in the subsequent acoustic signature; and 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system comprising:
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a deviation detection device configured to receive passively excited residual sounds of a vehicle system sensed by one or more acoustic pickup devices during travel over a route, the deviation detection device configured to examine the passively excited residual sounds to identify one or more changes of interest in the passively excited residual sounds, wherein a previous acoustic signature represents the passively excited residual sounds sensed during a period or time and a subsequent acoustic signature represents the passively excited residual sounds sensed subset subsequent to the period of time, and wherein the one or more changes of interest that are identified include one or more of; a step change representative of a decrease or elimination of one or more frequencies in the subsequent acoustic signature, wherein the one or more frequencies have greater magnitudes in the previous acoustic signature than in the subsequent acoustic signature, or a frequency change representative of a shift of one or more peaks from the one or more frequencies in the previous acoustic signature to one or more different frequencies in the subsequent acoustic signature; and an identification device configured to identify 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 by the deviation detection device. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method comprising:
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generating an acoustical signature of audible passively excited residual sounds generated by movement of a vehicle system along a route; selecting one or more subsets of frequencies of the audible passively excited residual sounds to examine based on one or more of a speed, acceleration, throttle setting, or brake setting of the vehicle system examining the one or more subsets of frequencies of the audible passively excited residual sounds in the acoustical signature that are selected to identify one or more changes of interest; and identifying a section of the route as being damaged using the one or more changes of interest. - View Dependent Claims (19, 20)
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Specification