Adaptive brake flow masking at remote locomotives of a distributed power train
First Claim
1. In a railroad train comprising a fluid carrying brake pipe connecting a lead locomotive and at least one remote locomotive, a method of adaptively disabling an ability of the remote locomotive to respond to an unexpected brake pipe flow condition comprising:
- determining a braking state of the train;
determining a degree of change in a brake pipe pressure proximate the remote locomotive during the braking state; and
disabling an ability of the remote locomotive to respond to an unexpected brake pipe flow condition for a time period responsive to the braking state and the degree of change in the brake pipe pressure so that an undesired operation of the remote locomotive is limited;
wherein a duration of the time period is based on the degree of change in the brake pipe pressure when the braking state of the train is a release state and/or the degree of chance in the brake pipe pressure when the braking state of the train is an application state.
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Accused Products
Abstract
In a transportation system comprising a fluid carrying brake pipe (14) connecting controlling member of the system and a controlled member (e.g., 12) a method of adaptively disabling an ability of the controlled member to respond to an unexpected brake pipe flow condition includes determining a braking state of the transportation system. The method also includes determining a degree of change in a brake pipe pressure during the braking state. The method further includes disabling an ability of the controlled member to respond to an unexpected brake pipe flow condition for a time period responsive to the braking state and the degree of change in the brake pipe pressure so that an undesired operation of the controlled member is limited.
24 Citations
16 Claims
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1. In a railroad train comprising a fluid carrying brake pipe connecting a lead locomotive and at least one remote locomotive, a method of adaptively disabling an ability of the remote locomotive to respond to an unexpected brake pipe flow condition comprising:
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determining a braking state of the train; determining a degree of change in a brake pipe pressure proximate the remote locomotive during the braking state; and disabling an ability of the remote locomotive to respond to an unexpected brake pipe flow condition for a time period responsive to the braking state and the degree of change in the brake pipe pressure so that an undesired operation of the remote locomotive is limited; wherein a duration of the time period is based on the degree of change in the brake pipe pressure when the braking state of the train is a release state and/or the degree of chance in the brake pipe pressure when the braking state of the train is an application state. - View Dependent Claims (2, 3, 4, 5, 6)
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7. In a railroad train comprising a fluid carrying brake pipe connecting a lead locomotive and at least one remote locomotive, a system for disabling an ability of the remote locomotive to respond to an unexpected brake pipe flow condition comprising:
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a brake pipe pressure sensor for sensing a fluid pressure in the brake pipe proximate the first remote locomotive and for providing a pressure signal representative of a sensed fluid pressure; and a processor configured for determining a braking state of the train;
for determining a degree of change in a brake pipe pressure during the braking state responsive to the pressure signal; and
for disabling an ability of the remote locomotive to respond to an unexpected brake pipe flow condition for a time period responsive to the braking state and the degree of change in the brake pipe pressure so that an undesired operation of the remote locomotive is limited;wherein a duration of the time period is based on the degree of change in the brake pipe pressure when the braking state of the train is a release state and/or the degree of chance in the brake pipe pressure when the braking state of the train is an application state. - View Dependent Claims (8, 9, 10, 11, 12)
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13. In a railroad train comprising a fluid carrying brake pipe connecting a lead locomotive and at least one remote locomotive a system for disabling an ability of the remote locomotive to respond to an unexpected brake pipe flow condition comprising:
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a brake pipe pressure sensor for sensing a fluid pressure in the brake pipe proximate the remote locomotive and for providing a pressure signal representative of a sensed fluid pressure; a memory storing a masking schedule comprising a plurality of masking duration time periods, each time period based on a respective range of change in a brake pipe fluid pressure; and a processor comprising logic executable for accessing the masking schedule stored in the memory responsive to the pressure signal to disable an ability of the remote locomotive to respond to an unexpected brake pipe flow condition for a masking duration time period corresponding to sensed degree of change in the brake pipe fluid pressure so that an undesired operation of the remote locomotive is limited. - View Dependent Claims (14, 15)
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16. In a transportation system comprising a fluid carrying brake pipe connecting a controlling member of the system and a controlled member of the system, a method of adaptively disabling an ability of a controlled member to respond to an unexpected brake pipe flow condition comprising:
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determining a braking state of the transportation system; determining a degree of change in a brake pipe pressure proximate the controlled member during the braking state; and disabling an ability of the controlled member to respond to an unexpected brake pipe flow condition for a time period responsive to the braking state and the degree of change in the brake pipe pressure so that an undesired operation of the controlled member is limited; wherein a duration of the time period is based on the degree of change in the brake pipe pressure when the braking state of the train is a release state and/or the degree of change in the brake pipe pressure when the braking state of the train is an application state.
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Specification