Method and system for identifying an erroneous speed of a vehicle
First Claim
1. A method comprising:
- receiving, by one or more computer processors, an input size of a wheel of a rail vehicle that includes plural wheels;
determining, by the one or more computer processors, a derived vehicle speed of the rail vehicle that is based on the input size of the wheel;
determining, by the one or more computer processors, a reference vehicle speed of the rail vehicle as the rail vehicle moves;
comparing, by the one or more computer processors, the derived vehicle speed with the reference vehicle speed;
identifying, by the one or more computer processors, an error in the input size of the wheel based on a difference between the derived vehicle speed and the reference vehicle speed, wherein movement of the rail vehicle along a designated route is controlled by a trip plan, the trip plan designating operational settings of the rail vehicle as a function of at least one of time or distance along the designated route;
responsive to identifying the error in the input size of the wheel, modifying, by the one or more computer processors, at least one of the trip plan or control signals that are based on the trip plan to modify the movement of the rail vehicle; and
directing, by the one or more computer processors, application of an adhesion-varying material to a surface on which the rail vehicle moves to vary adhesion between the wheels and the surface,wherein at least one of an amount or type of the adhesion-varying material that is applied is based on comparisons between sizes of one or more of the wheels and a corrected size of the input wheel, the corrected size based on the input size and the error in the input size of the wheel,wherein the amount of the adhesion-varying material that is applied ahead of at least one of the wheels along the designated route is increased when the at least one of the wheels is smaller than the corrected size of the input wheel relative to an amount of the adhesion-varying material that is applied when the at least one of the wheels is larger than the input wheel, and the amount of the adhesion-varying material that is applied ahead of the at least one of the wheels along the designated route is decreased when the at least one of the wheels is larger than the corrected size of the input wheel relative to an amount of the adhesion-varying material that is applied when the at least one of the wheels is smaller than the input wheel.
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Accused Products
Abstract
A method includes receiving an input size of a wheel of a vehicle, determining a derived speed of the vehicle that is based on the input size of the wheel, determining a reference speed of the vehicle as the vehicle moves, comparing the derived speed with the reference speed of the vehicle, and identifying an error in the input size of the wheel based on a difference between the derived speed and the reference speed. A system includes a control unit configured to determine a derived speed of a vehicle that is based on an input size of the wheel and a reference speed of the vehicle as the vehicle moves. The control unit compares the derived speed with the reference speed of the vehicle in order to identify an error in the input size of the wheel.
48 Citations
20 Claims
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1. A method comprising:
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receiving, by one or more computer processors, an input size of a wheel of a rail vehicle that includes plural wheels; determining, by the one or more computer processors, a derived vehicle speed of the rail vehicle that is based on the input size of the wheel; determining, by the one or more computer processors, a reference vehicle speed of the rail vehicle as the rail vehicle moves; comparing, by the one or more computer processors, the derived vehicle speed with the reference vehicle speed; identifying, by the one or more computer processors, an error in the input size of the wheel based on a difference between the derived vehicle speed and the reference vehicle speed, wherein movement of the rail vehicle along a designated route is controlled by a trip plan, the trip plan designating operational settings of the rail vehicle as a function of at least one of time or distance along the designated route; responsive to identifying the error in the input size of the wheel, modifying, by the one or more computer processors, at least one of the trip plan or control signals that are based on the trip plan to modify the movement of the rail vehicle; and directing, by the one or more computer processors, application of an adhesion-varying material to a surface on which the rail vehicle moves to vary adhesion between the wheels and the surface, wherein at least one of an amount or type of the adhesion-varying material that is applied is based on comparisons between sizes of one or more of the wheels and a corrected size of the input wheel, the corrected size based on the input size and the error in the input size of the wheel, wherein the amount of the adhesion-varying material that is applied ahead of at least one of the wheels along the designated route is increased when the at least one of the wheels is smaller than the corrected size of the input wheel relative to an amount of the adhesion-varying material that is applied when the at least one of the wheels is larger than the input wheel, and the amount of the adhesion-varying material that is applied ahead of the at least one of the wheels along the designated route is decreased when the at least one of the wheels is larger than the corrected size of the input wheel relative to an amount of the adhesion-varying material that is applied when the at least one of the wheels is smaller than the input wheel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system comprising:
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an input device configured to be disposed onboard a vehicle for receiving an input size of a wheel of the rail vehicle that includes plural wheels; and one or more computer processors configured to be disposed onboard the rail vehicle for determining a derived vehicle speed of the rail vehicle that is based on the input size of the wheel, and also for determining a reference vehicle speed of the rail vehicle as the rail vehicle moves, the one or more computer processors also configured to compare the derived vehicle speed with the reference vehicle speed and identify an error in the input size of the wheel, wherein the error is based on a difference between the derived vehicle speed and the reference vehicle speed; wherein the one or more computer processors are configured to control movement of the rail vehicle along a designated route in accordance with a trip plan, the trip plan designating operational settings of the rail vehicle as a function of at least one of time or distance along the designated route, wherein the one or more computer processors are configured to, in response to identifying the error in the input size of the wheel, modify at least one of the trip plan or control signals that are based on the trip plan to modify the movement of the rail vehicle, and wherein the one or more computer processors are configured to determine at least one of an amount or type of an adhesion-varying material that is applied to a surface upon which the rail vehicle moves based on comparisons between sizes of one or more of the wheels and a corrected size of the input wheel, the corrected size based on the input size and the error in the input size of the wheel, wherein the one or more computer processors are configured to determine the amount of the adhesion-varying material that is applied ahead of at least one of the wheels along the designated route as a larger amount when the at least one of the wheels is smaller than the corrected size of the input wheel relative to an amount of the adhesion-varying material that is applied when the at least one of the wheels is larger than the input wheel, and the one or more computer processors are configured to determine the amount of the adhesion-varying material that is applied ahead of the at least one of the wheels along the designated route to be a smaller amount when the at least one of the wheels is larger than the corrected size of the input wheel relative to an amount of the adhesion-varying material that is applied when the at least one of the wheels is smaller than the input wheel. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification