Enhanced Rail Inspection

• US 20090132179A1
• Filed: 11/15/2007
• Published: 05/21/2009
• Est. Priority Date: 11/15/2007
• Status: Active Grant

• Current Assignee: Taiwan Semiconductor Manufacturing Company Limited
• Original Assignee: Taiwan Semiconductor Manufacturing Company Limited
• Inventors: Wang, Ming, Hsu, Kevin, Fu, Chih-Chieh, Wei, Chih-An
• Granted Patent: US 8,190,377 B2
• Time in Patent Office: Days
• US Class Current: 702/34
• CPC Class Codes: G01K 13/06 in linear movement
• CPC Class Codes: G01M 99/007 by applying a load, e.g. for resistance or wear testing G01M99/001 takes precedence; testing the elasticity of structures G01M5/00

Abstract

Rail inspection is discussed that employs a monitor vehicle running on one or more tracks of a rail system that performs physical rail inspection in combination with monitoring and analysis of other system parameters that accompany the physical rail.

Claims

1. A method for inspecting a rail system comprising:

operating a monitor vehicle over one or more rails of said rail system;

directing non-destructive energy from a first sensor of said monitor vehicle at said one or more rails;

determining a physical rail integrity based on analysis of a reflection of said directed non-destructive energy from said one or more rails;

measuring a temperature of said one or more rails by a second sensor on said monitor vehicle; and

transmitting said determined physical rail integrity and said temperature to a data collection point.

2. The method of claim 1 further comprising:

comparing said temperature to an alarm temperature condition;

transmitting a temperature alarm responsive to said temperature meeting said alarm temperature condition; and

transmitting a rail integrity alarm response to said determined physical rail integrity being abnormal.

3. The method of claim 1 further comprising:

directing non-destructive energy from a third sensor of said monitor vehicle at a power line of said rail system;

determining a physical power line integrity based on analysis of said directed non-destructive energy; and

transmitting said determined physical power line integrity along with said determined physical integrity and said temperature.

4. The method of claim 3 further comprising:

transmitting a power line alarm responsive to said determined physical power line integrity being abnormal.

5. The method of claim 1 further comprising:

transmitting a test signal by said monitor vehicle along a communication line associated with said rail system;

determining a quality of said communication line based on analysis of said transmitted test signal; and

transmitting said quality along with said determined physical integrity and said temperature.

6. The method of claim 5 further comprising:

transmitting a communication line alarm responsive to said determined quality being less than a predetermined level.

7. The method of claim 1 further comprising:

detecting by said monitor vehicle additional parameters of said rail system, said additional parameters comprising one or more of;

vibration;

cracks;

abrasions; and

weak spots;

wherein said detected additional parameters are transmitted along with said determined physical integrity and said temperature; and

transmitting a parameter alarm responsive to said detected additional parameters being abnormal.

8. The method of claim 1 further comprising:

detecting a report interval marker in said one or more rails; and

wherein said transmitting is in response to said detecting.

9. The method of claim 1 wherein said operating comprises one or:

automatically operating said monitor vehicle in response to computer control;

or

manually operating said monitor vehicle in response to operator input.

10. The method of claim 1 further comprising:

receiving power from said rail system to operate said monitor vehicle.

11. The method of claim 1 further comprising:

vacuuming by said monitor vehicle of dirt particles from said one or more rails.

12. A rail monitor vehicle for a rail system, said rail monitor vehicle comprising:

a drive mechanism for moving said rail monitor vehicle over one of one or more rails of said rail system;

a plurality of sensors, said plurality of sensors including at least;

a temperature sensor; and

a rail deformation sensor;

a processor for processing raw data measured by said plurality of sensors; and

a communication interface configured to communicate said processed raw data to a data collection point.

13. The rail monitor vehicle of claim 12 further comprising:

a power contact connecting to a power source provided by said rail system.

14. The rail monitor vehicle of claim 12 wherein said plurality of sensors further include one or more of:

a power line deformation sensor;

a communication line sensor;

a crack sensor; and

a vibration sensor.

15. The rail monitor vehicle of claim 12 further comprising:

a vacuum configured to vacuum particles from said one of said one or more rails.

16. The rail monitor vehicle of claim 12 wherein said drive mechanism and said plurality of monitors are contained in a housing, wherein said housing is conspicuously observable by a human observer.

17. The rail monitor vehicle of claim 12 wherein said drive mechanism is activated in response to one of:

automated computer control;

or

operator input.

18. The rail monitor vehicle of claim 12 further comprising:

a report interval marker detector, wherein said communication interface communicates said raw data and said processed raw data responsive to detecting a report interval marker by said report interval marker detector.

19. A system for inspecting a rail system comprising:

a rail monitor vehicle operable to traverse one or more rails of said rail system, said rail monitor comprising;

locomotive means;

a plurality of sensors to measure a plurality of parameters of said rail system, said plurality of parameters including at least;

rail deformation; and

rail temperature; and

a processor for processing said measured plurality of parameters;

a plurality of alarm conditions corresponding to said plurality of parameters, wherein said rail monitor vehicle transmits an alarm for each of said measured plurality of parameters that falls within said plurality of alarm conditions; and

a data collection point, wherein said rail monitor vehicle communicates said measured plurality of parameters and said processed measured plurality of parameters to said data collection point.

20. The system of claim 19 wherein said plurality of parameters further includes one or more of:

rail cracking;

power line integrity;

rail vibration; and

communication line strength.

21. The system of claim 19 wherein rail monitor vehicle is conspicuously observable by a human observer.

22. The system of claim 19 wherein said locomotive means of said rail monitor vehicle is controlled in response to one of:

automated computer control;

or

operator input.

23. The system of claim 19 wherein said rail monitor vehicle further comprises:

a power contact to receive power for said locomotive means from said rail system.

24. The system of claim 19 wherein said rail monitor vehicle further comprises:

a vacuum configured to vacuum said one or more rails.