Track test load device and track test load system for calibrating a constant warning time device

Patent metadata

Field	Value
Publication number	US-9671487-B2
Application number	US-201514812639-A
Country	US
Kind code	B2
Filing date	Jul 29, 2015
Priority date	Jul 29, 2015
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

A track test load device includes an inductor assembly with simulated track inductors simulating a rail track, a connector assembly for connecting the inductor assembly to a constant warning time device, and a multi-way-switch-assembly with a multi-way-switch with multiple switch positions. The multi-way-switch assembly is operably coupled between the inductor assembly and the connector assembly, wherein a switch position of the multi-way-switch corresponds to an operating mode of the track test load device. Furthermore, a track test load system and a method for testing a constant warning time device are disclosed.

First claim

What is claimed is:

1. A track test load device comprising:
an inductor assembly comprising simulated track inductors simulating a rail track;
a connector assembly for connecting the inductor assembly to a constant warning time device; and
a multi-way-switch-assembly comprising a multi-way-switch with multiple switch positions,
wherein the multi-way-switch assembly is operably coupled between the inductor assembly and the connector assembly, and wherein a switch position of the multi-way-switch corresponds to a calibration operation for calibrating a constant warning time device when the track test load device is coupled to the constant warning time device, the connector assembly being configured to be inserted into a track module of the constant warning time device,
wherein an alternating current (AC) signal is transmitted by the constant warning time device via the simulated track inductors and a voltage response of the simulated track inductors is measured by the constant warning time device for calibrating the constant warning time device.

2. The track test load device of claim 1 , wherein the multi-way-switch is a three-way-switch arranged in parallel to the inductor assembly and the connector assembly.

3. The track test load device of claim 1 , wherein the multi-way switch comprises three switch positions, wherein a first switch position corresponds to a first calibration operation, a second switch position corresponds to a second calibration operation, and a third switch position corresponds to a third calibration operation of the track test load device.

4. The track test load device of claim 3 , wherein the first calibration operation is for calibration (GCP CAL) and for setup for approach (GCP APP) of the constant warning time device.

5. The track test load device of claim 3 , wherein the second calibration operation is for calibration of an island circuit (ISL CAL) of the constant warning time device.

6. The track test load device of claim 3 , wherein the third calibration operation is for setup for linearization (GCP LIN) of the constant warning time device.

7. The track test load device of claim 1 , wherein the simulated track inductors are electrically connected in series and are operably coupled to the connector assembly via electrical connecting elements.

8. The track test load device of claim 7 , wherein the connector assembly includes a cage clamp connector comprising a plurality of slots for receiving the electrical connecting elements.

9. A track test load system comprising:
a test track load device comprising:
an inductor assembly comprising simulated track inductors simulating a rail track;
a connector assembly for connecting the inductor assembly to a constant warning time device;
a multi-way-switch-assembly comprising a multi-way-switch with multiple switch positions, wherein the multi-way-switch assembly is operably coupled between the inductor assembly and the connector assembly; and

a constant warning time device comprising:
at least one track module,

wherein the track test load device is operably coupled to the at least one track module via the connector assembly for performing calibration operations of the constant warning time device, a switch position of the multi-way-switch corresponding to a calibration operation of the constant warning time device, wherein an alternating current (AC) signal is transmitted by the constant warning time device via the simulated track inductors, and a voltage response of the simulated track inductors is measured by the constant warning time device for calibrating the constant warning time device.

10. The track test load system of claim 9 , wherein the multi-way switch comprises three switch positions, wherein a first switch position corresponds to a first calibration operation, a second switch position corresponds to a second calibration operation, and a third switch position corresponds to a third calibration operation of the constant warning time device.

11. The track test load device of claim 10 , wherein the first calibration operation is calibration (GCP CAL) and setup for approach (GCP APP) of the constant warning time device.

12. The track test load device of claim 10 , wherein the second calibration operation is calibration of an island circuit (ISL CAL) of the constant warning time device.

13. The track test load device of claim 10 , wherein the third calibration operation is setup for linearization (GCP LIN) of the constant warning time device.

Assignees

• Siemens Industry Inc

Inventors

• Harp Brian
• Yocum Jay

Classifications

• G01R35/005 Primary

  Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references (G01R33/0035, G01R35/002 take precedence) · CPC title

• B61L29/30

  Supervision, e.g. monitoring arrangements · CPC title

• B61L29/22 Primary

  electrically · CPC title