Train simulator test set and method therefor

Patent metadata

Field	Value
Publication number	US-12509131-B2
Application number	US-202217816533-A
Country	US
Kind code	B2
Filing date	Aug 1, 2022
Priority date	Sep 9, 2020
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

A train simulator test set is disclosed that can be operably coupled to a railroad track to measure the resting impedance of that track circuit and simulate a train by varying the railroad track inductance over a set period of time. The test set can select the speed, direction, and number of trains to simulate. By applying a variable inductance on the railroad tracks, the test set can simulate a train moving at variable speeds toward and away from the island. The test set can apply inductances to the railroad tracks to simulate two or more trains moving in each direction of the tracks at the same time, along with multiple looks and routes. The train simulator test set can include simulation software to vary the parameters of the train simulation and couple a variable inductance on the railroad tracks.

First claim

What is claimed is:

1 . A train simulator test set configured simulate a train on a railroad track to test the functionality of crossing safety devices, comprising:
a user interface configured to set or display one or more parameters of a simulated train; a plurality of cables configured to releasably couple to railroad track rails; a memory storing a plurality of train and railroad track characteristics; and a processor operably coupled to the memory and capable of executing machine-readable instructions to perform program steps, the program steps including:
measuring a resting impedance of a section of railroad track;
receiving an input track length;
receiving a plurality of desired train simulation parameters;
calculating, based on the received desired train simulation parameters, inductance values that that correspond to the inductance characteristics of a train having the desired train simulation parameters;
generating the calculated inductance values and applying the inductance to the railroad tracks; and
verifying, based on the application of the inductance to the railroad track, proper operation of the crossing safety devices.

2 . The train simulator test set of claim 1 , wherein the inductance values can be retrieved from the memory.

3 . The train simulator test set of claim 1 , wherein the desired train simulation parameters are received from the user interface.

4 . The train simulator test set of claim 1 , wherein the desired train simulation parameters are received from a remote device.

5 . The train simulator test set of claim 1 , the program steps further comprising measuring the inductance of a section of railroad track.

6 . The train simulator test set of claim 1 , wherein the input track length is a length of the measured section of railroad track.

7 . The train simulator test set of claim 1 , the program steps further comprising correlating the measured railroad track impedance with stored values for the section of railroad track to identify the one or more simulated train parameters.

8 . The train simulator test set of claim 7 , wherein the inductance values are retrieved from a remote database.

9 . The train simulator test set of claim 1 , wherein the memory includes a table of inductance values for different train parameters.

10 . The train simulator test set of claim 9 , wherein the table of inductance values includes measured inductance values for a particular section of track.

11 . The train simulator test set of claim 10 , wherein the inductance of the track can be measured and correlated with the track measurements of stored train crossing inductance values for the section of railroad track stored in memory.

12 . A method of simulating a train on a railroad track to test the functionality of crossing safety devices, the method comprising the steps of:
measuring a resting impedance of a section of railroad track; receiving an input track length; receiving a plurality of desired train simulation parameters; calculating, based on the received desired train simulation parameters, inductance values that correspond to the inductance characteristics of a train having the desired train simulation parameters; generating the calculated inductance values and applying the inductance to the railroad tracks; and verifying, based on the application of the inductance to the railroad track proper operation of the crossing safety devices.

13 . The method of claim 12 , further comprising correlating the measured railroad track impedance with stored values for the section of railroad track to identify the one or more simulated train parameters.

14 . The method of claim 12 , wherein the input track length is a length of the measured section of railroad track.

15 . The method of claim 12 , wherein the inductance values are retrieved from a memory.

16 . The method of claim 12 , wherein the train simulation parameters are received from the user interface.

17 . The method of claim 12 , wherein the train simulation parameters are received from a remote device.

18 . The method of claim 12 , wherein the inductance values are retrieved from a remote database.

19 . The method of claim 15 , wherein the memory includes a table of inductance values for different train parameters.

20 . The method of claim 15 , wherein the inductance of the track can be measured and correlated with the track measurements of stored train crossing inductance values for the section of railroad track stored in memory.

Assignees

• Bnsf Railway Co

Inventors

• Pittman Daniel E
• Sterling Ross M

Classifications

• B61L25/06

  Indicating or recording the setting of track apparatus, e.g. of points, of signals · CPC title

• B61L25/023

  Determination of driving direction of vehicle or train · CPC title

• B61L29/226

  using track-circuits, closed or short-circuited by train or using isolated rail-sections · CPC title

• B61L27/53

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

• B61L1/20

  Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning · CPC title