Switch alignment detection enforcement system and method

Patent metadata

Field	Value
Publication number	US-10400396-B2
Application number	US-201514636781-A
Country	US
Kind code	B2
Filing date	Mar 3, 2015
Priority date	Mar 3, 2015
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

A switch alignment detection and enforcement system for a switch for a railway track having a normal leg and a reverse leg, the switch having a normal position for entry on the normal leg after the switch and a reverse position for entry on the reverse leg after the switch. The system includes: a first switch monitor device configured to generate at least one signal when the switch is in the normal position; a second switch monitor device configured to generate at least one signal when the switch is in the reverse position; and a train management computer configured or programmed to implement at least one train control action based on: a signal or absence thereof from the first switch monitor device and/or the second switch monitor device; and the content of a form-based authority. A switch alignment detection and enforcement arrangement and method are also disclosed.

First claim

What is claimed is:

1. A switch alignment detection and enforcement system for a switch for a railway track having a normal leg and a reverse leg, the switch having a normal position for entry on the normal leg after the switch and a reverse position for entry on the reverse leg after the switch, the system comprising:
a first switch monitor device in electrical communication with the switch and configured to generate at least one signal based on the switch being in the normal position;
a second switch monitor device in electrical communication with the switch and configured to generate at least one signal based on the switch being in the reverse position;
a power source configured to supply power directly or indirectly to the first and second switch monitor devices;
a circuit controller located between the power source and the first and second switch monitor devices, the circuit controller configured to provide electrical communication from the switch to the first switch monitor device and to the second switch monitor device, wherein the circuit controller is switchable between a first position in which power is supplied via the power source to the first switch monitor device to generate the at least one signal based on the switch being in the normal position, and a second position in which power is supplied via the power source to the second switch monitor device to generate the at least one signal based on the switch being in the reverse position; and
on at least one locomotive of a train travelling on the railway track, a train management computer configured or programmed to facilitate or implement at least one train control action based at least partly on the following:
at least a portion of the signal or absence thereof from the first switch monitor device;
at least a portion of the signal or absence thereof from the second switch monitor device; and
at least a portion of content of a form-based authority.

2. The system of claim 1 , wherein the at least one train control action is further based at least partly on at least one input or lack thereof by a user representing at least one crew action.

3. The system of claim 1 , wherein the train management computer is configured or programmed to permit the train to enter the normal leg after the switch if:
the at least one signal of the first switch monitor device is detected or received; and
the content of the form-based authority is “Normal Leg”.

4. The system of claim 1 , wherein the train management computer is configured or programmed to permit the train to enter the reverse leg of the switch if:
the at least one signal of the second switch monitor device is detected or received; and
the content of the form-based authority is “Reverse Leg”.

5. The system of claim 1 , wherein the train management computer is configured or programmed to prevent the train from entering the normal leg after the switch if:
the at least one signal of the first switch monitor device is detected or received; and
the content of the form-based authority is “Reverse Leg”.

6. The system of claim 1 , wherein the train management computer is configured or programmed to prevent the train from entering the reverse leg after the switch if:
the at least one signal of the second switch monitor device is detected or received; and
the content of the form-based authority is “Normal Leg”.

7. The system of claim 1 , wherein the train management computer is configured or programmed to: (1) enforce the train to restricted speed through the switch, and (2) enforce for a user input that the train is operating on the normal leg, if:
the at least one signal of the first switch monitor device is not detected or received;
the at least one signal of the second switch monitor device is not detected or received;
the content of the form-based authority is “Normal Leg”; and
input of at least one user is “Normal”.

8. The system of claim 1 , wherein the train management computer is configured or programmed to: (1) enforce the train to restricted speed through the switch; and (2) enforce for a user input that the train is operating on the reverse leg, if:
the at least one signal of the first switch monitor device is not detected or received;
the at least one signal of the second switch monitor device is not detected or received;
the content of the form-based authority is “Reverse Leg”; and
input of at least one user is “Reverse”.

9. The system of claim 1 , wherein the train management computer is configured or programmed to: (1) prevent the train from entering the normal leg after the switch; and (2) enforce for a user input that the train is operating on the normal leg without authority, if:
the at least one signal of the first switch monitor device is not detected or received;
the at least one signal of the second switch monitor device is not detected or received;
the content of the form-based authority is “Reverse Leg”; and
input of at least one user is “Normal”.

10. The system of claim 1 , wherein the train management computer is configured or programmed to: (1) enforce the train to restricted speed on the reverse leg; (2) correct location data for the train; and (3) then enforce the train to a stop, if:
the at least one signal of the first switch monitor device is not detected or received;
the at least one signal of the second switch monitor device is not detected or received;
the content of the form-based authority is “Reverse Leg”;
input of at least one user is “Reverse”; and
a determination that the actual switch alignment is “Normal”.

11. The system of claim 1 , wherein the train management computer is configured or programmed to: (1) prevent the train from entering the reverse leg after the switch; and (2) enforce for a user input that the train is operating on the reverse leg without authority, if:
the at least one signal of the first switch monitor device is not detected or received;
the at least one signal of the second switch monitor device is not detected or received;
the content of the form-based authority is “Normal Leg”; and
input of at least one user is “Reverse”.

12. The system of claim 1 , wherein the train management computer is configured or programmed to: (1) enforce the train to restricted speed on the normal leg; (2) correct location data for the train; and (3) then enforce the train to a stop, if:
the at least one signal of the first switch monitor device is not detected or received;
the at least one signal of the second switch monitor device is not detected or received;
the content of the form-based authority is “Normal Leg”;
input of at least one user is “Normal”; and
a determination that the actual switch alignment is “Reverse”.

13. The system of claim 1 , wherein the train management computer is further configured or programmed to:
determine whether the train is proceeding at restricted speed; and
if the train is not proceeding at the restricted speed, facilitate or implement at least one of the following: an automatic braking operation, initiate at least one alarm, provide at least one indication in a display in the locomotive, or any combination thereof.

14. The system of claim 1 , wherein the train management computer is further configured or programmed to:
determine whether the train has stopped and a status of at least one of the first switch monitor device and the second switch monitor device; and
if the train has not stopped, or the status of at least one of the first switch monitor device or the second switch monitor device has not been determined, facilitate or implement at least one of the following: an automatic braking opera

Assignees

• Westinghouse Air Brake Tech Corp

Inventors

• Kernwein Jeffrey D
• Moore James H

Classifications

• B61L11/08

  using electrical or magnetic interaction between vehicle and track · CPC title

• B61L5/10 Primary

  Locking mechanisms for points; Means for indicating the setting of points · CPC title

• E01B7/00 Primary

  Switches; Crossings (operating mechanisms B61L) · CPC title

• B61L27/0088

  Operations & Transport · mapped topic

• B61L27/53

  for trackside elements or systems, e.g. trackside supervision of trackside control system conditions · CPC title