Method and system for detecting when an end of train has passed a point
First Claim
1. A method for determining that an end of train has passed a point comprising the steps of:
- determining that a head of a train has reached a first position at a point of interest;
detecting, after the determining step, that the head of the train has traveled a distance past the first position, the distance being at least as long as a length of the train;
obtaining a second position of an end of the train after the detecting step;
comparing the first position to the second position to verify that the end of the train has passed the point of interest.
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Accused Products
Abstract
A controller determines that an end of train (EOT) has passed a point through the use of positioning systems at the head of the train (HOT) and the EOT. In a first method, the controller obtains the HOT position at a point of interest from the HOT positioning system. The controller then determines when the train has traveled a distance equal to the length of the train and then interrogates the EOT positioning system. If the difference between this position and the position reported by the HOT positioning system at the point of interest exceeds a threshold, then the EOT has passed the point. In a second method, when the HOT positioning system reaches a point of interest, the position reported by the EOT positioning system is integrated until the total distance traveled by the EOT equals the length of the train.
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Citations
50 Claims
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1. A method for determining that an end of train has passed a point comprising the steps of:
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determining that a head of a train has reached a first position at a point of interest;
detecting, after the determining step, that the head of the train has traveled a distance past the first position, the distance being at least as long as a length of the train;
obtaining a second position of an end of the train after the detecting step;
comparing the first position to the second position to verify that the end of the train has passed the point of interest. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for determining that an end of train has passed a point comprising the steps of:
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determining that a head of a train has reached a first position at a point of interest;
detecting, after the determining step, that an end of the train has traveled a distance at least as long as a length of the train;
obtaining a second position of the end of the train after the detecting step;
comparing the first position to the second position to verify that the end of the train has passed the point of interest. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A system for determining that an end of train has passed a point, the system comprising:
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a control unit;
a first positioning system in communication with the control unit, the first positioning system being located at a head of a train;
a second positioning system in communication with the control unit, the second positioning system being located at an end of the train;
the control unit being configured to perform the steps of determining when a head of a train has reached a first position at a point of interest using information from the first positioning system;
detecting when the head of the train has traveled a distance past the first position, the distance being at least as long as a length of the train;
obtaining a second position of an end of the train from the second positioning system when the head of train has traveled the distance;
comparing the first position to the second position to verify that the end of the train has passed the point of interest. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A system for determining that an end of train has passed a point, the system comprising:
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a control unit;
a first positioning system in communication with the control unit, the first positioning system being located at a head of a train;
a second positioning system in communication with the control unit, the second positioning system being located at an end of the train;
the control unit being configured to perform the steps of determining a first position of a head of a train at a point of interest;
detecting, after the determining step, when an end of the train has traveled a distance at least as long as a length of the train;
obtaining a second position of the end of the train after the detecting step;
comparing the first position to the second position to verify that the end of the train has passed the point of interest. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 49, 50)
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Specification