Test device and method for testing a rail car brake system

• US 20060074581A1
• Filed: 09/25/2004
• Published: 04/06/2006
• Est. Priority Date: 09/25/2004
• Status: Active Grant

• Current Assignee: Graham White Manufacturing Co (Westinghouse Air Brake Technologies Corporation)
• Original Assignee: Graham White Manufacturing Co (Westinghouse Air Brake Technologies Corporation)
• Inventors: Edwards, Scott G., Edwards, Kathryn M., Granger, Alan R., Masek, William E., Crane, Jerry D.
• Granted Patent: US 7,054,777 B2
• Time in Patent Office: Days
• US Class Current: 702/114
• CPC Class Codes: B60T 17/228 for railway vehicles

Abstract

The present invention discloses and claims a test device and method for testing a rail car brake system. The test device includes a pneumatic circuit and electronic circuit connecting a supply of test air to the rail car brake system being tested. The pneumatic and electronic circuits operate to selectively supply and vent the test air to or from the rail car brake system according to programmed instructions. The test device further includes a web server interface for communicating with a predetermined web page or other source external to the rail car brake system test device to retrieve and download additional programming instructions.

Claims

1. A rail car brake system test device comprising:

a. an air supply to provide test air to a rail car brake system;

b. a valve manifold connected between said air supply and the rail car brake system, wherein said valve manifold includes

i. a valve for selectively supplying and venting said test air to or from the rail car brake system and

ii. a sensor for measuring said test air;

c. a control circuit operatively connected with said valve manifold for selectively positioning said valve and recording a measurement from said sensor;

d. a power supply connected to said control circuit for providing electrical power to said control circuit; and

e. a web server interface in communication with said control circuit and configured to receive programming instructions from a predetermined web page and to communicate said programming instructions to said control circuit for testing the rail car brake system.

2. The rail car brake system test device as in claim 1, wherein said valve manifold includes a solenoid operated valve positioned by said control circuit.

3. The rail car brake system test device as in claim 1, wherein said valve manifold includes a pressure sensor for measuring the pressure of said test air.

4. The rail car brake system test device as in claim 1, wherein said valve manifold includes a flow sensor for measuring the flow rate of said test air.

5. The rail car brake system test device as in claim 1, wherein said valve manifold includes a thermal bypass valve for diverting a portion of said test air for selectively heating or cooling said rail car brake system test device.

6. The rail car brake system test device as in claim 1, wherein said control circuit includes non-volatile memory for recording measurements of said test air.

7. The rail car brake system test device as in claim 1, wherein said power supply includes a rechargeable battery.

8. The rail car brake system test device as in claim 1, wherein said web server interface is configured to receive data from said control circuit and to communicate said data to a location external to said test device.

9. The rail car brake system test device as in claim 1, further including a data entry device for communicating with said control circuit.

10. The rail car brake system test device as in claim 1, further including a web browser for accessing said predetermined web page.

11. A rail car brake system test device comprising:

a. an air supply to provide test air to a rail car brake system;

b. a valve manifold connected between said air supply and the rail car brake system, wherein said valve manifold includes

i. a valve for selectively supplying and venting said test air to or from the rail car brake system and

ii. a sensor for measuring said test air;

c. a control circuit operatively connected with said valve manifold for selectively positioning said valve and recording a measurement from said sensor;

d. a power supply connected to said control circuit for providing electrical power to said control circuit; and

e. a web server interface in communication with said control circuit and configured to receive programming instructions from a source external to said rail car brake system test device and to communicate said programming instructions to said control circuit for testing the rail car brake system.

12. The rail car brake system test device as in claim 11, wherein said valve manifold includes a solenoid operated valve positioned by said control circuit.

13. The rail car brake system test device as in claim 11, wherein said valve manifold includes a pressure sensor for measuring the pressure of said test air.

14. The rail car brake system test device as in claim 11, wherein said valve manifold includes a flow sensor for measuring the flow rate of said test air.

15. The rail car brake system test device as in claim 11, wherein said valve manifold further includes a thermal bypass valve for diverting a portion of said test air for selectively heating or cooling said rail car brake system test device.

16. The rail car brake system test device as in claim 11, wherein said control circuit includes non-volatile memory for recording measurements of said test air.

17. The rail car brake system test device as in claim 11, wherein said power supply includes a rechargeable battery.

18. The rail car brake system test device as in claim 11, wherein said web server interface is configured to receive data from said control circuit and to communicate said data to a location external to said test device.

19. The rail car brake system test device as in claim 11, wherein said source external to said rail car brake system test device is a microprocessor having said programming instructions.

20. The rail car brake system test device as in claim 11, wherein said source external to said rail car brake system test device is a predetermined web page having said programming instructions.

21. The rail car brake system test device as in claim 11, further including a data entry device for communicating with said control circuit.

22. The rail car brake system test device as in claim 11, further including a web browser for accessing said source external to said rail car brake system test device.

23. A method for testing a rail car brake system using a test device comprising:

a. connecting a supply of test air to a valve manifold;

b. connecting said valve manifold to the rail car brake system;

c. operatively connecting a control circuit to said valve manifold;

d. retrieving programming instructions from a predetermined web page;

e. communicating said programming instructions to said control circuit;

f. executing said programming instructions through said control circuit to selectively position said valve manifold according to said programming instructions; and

g. measuring said test air.

24. The method for testing a rail car brake system of claim 23, wherein said measuring said test air includes measuring a pressure of said test air.

25. The method for testing a rail car brake system of claim 23, wherein said measuring said test air includes measuring a flow rate of said test air.

26. The method for testing a rail car brake system of claim 23, further including recording measurements of said test air.

27. The method for testing a rail car brake system of claim 23, further including transmitting said measurements of said test air to a location external to said test device.

28. The method for testing a rail car brake system of claim 23, further including diverting a portion of said test air through a thermal mechanism for selectively heating or cooling said test device.

29. A method for testing a rail car brake system using a test device comprising:

a. connecting a supply of test air to a valve manifold;

b. connecting said valve manifold to the rail car brake system;

c. operatively connecting a control circuit to said valve manifold;

d. retrieving programming instructions from a source external to said test device;

e. communicating said programming instructions to said control circuit;

f. executing said programming instructions through said control circuit to selectively position said valve manifold according to said programming instructions; and

g. measuring said test air.

30. The method for testing a rail car brake system of claim 29, wherein said retrieving programming instructions from a source external to said test device includes retrieving programming instructions from a microprocessor external to said test device.

31. The method for testing a rail car brake system of claim 29, wherein said retrieving programming instructions from a source external to said test device includes retrieving programming instructions from a predetermined web page.

32. The method for testing a rail car brake system of claim 29, wherein said measuring said test air includes measuring a pressure of said test air.

33. The method for testing a rail car brake system of claim 29, wherein said measuring said test air includes measuring a flow rate of said test air.

34. The method for testing a rail car brake system of claim 29, further including recording measurements of said test air.

35. The method for testing a rail car brake system of claim 29, further including transmitting said measurements of said test air to a location external to said test device.

36. The method for testing a rail car brake system of claim 29, further including diverting a portion of said test air through a thermal mechanism for selectively heating or cooling said test device using said test air.