SMART THERMAL IMAGING AND INSPECTION DEVICE FOR WHEELS AND COMPONENTS THEREOF AND METHOD

• US 20060180760A1
• Filed: 02/14/2006
• Published: 08/17/2006
• Est. Priority Date: 02/14/2005
• Status: Active Grant

• Current Assignee: Spirit Solutions Incorporated
• Original Assignee: Spirit Solutions Incorporated
• Inventors: Schlagheck, Jerry, Lane, T Randall
• Granted Patent: US 7,507,965 B2
• Time in Patent Office: Days
• US Class Current: 250/339.50
• CPC Class Codes: G01J 2005/0077 Imaging
• CPC Class Codes: G01J 5/0022 for sensing the radiation of moving bodies
• CPC Class Codes: G01J 5/02 Constructional details
• CPC Class Codes: G01J 5/025 Interfacing a pyrometer to an external device or network; User interface
• CPC Class Codes: G01J 5/026 Control of working procedures of a pyrometer, other than calibration; Bandwidth calculation; Gain control
• CPC Class Codes: G01J 5/08 Optical arrangements
• CPC Class Codes: G01J 5/0846 having multiple detectors for performing different types of detection, e.g. using radiometry and reflectometry channels
• CPC Class Codes: G01J 5/80 Calibration using comparison with reference sources G01J5/52
• CPC Class Codes: G01N 25/72 Investigating presence of flaws

Abstract

A smart thermal imaging and inspection of wheels for the automatic inspection and analysis of railroad car wheels but can also be used for wheeled object that contain a bearing. The inventive device includes a thermal imaging camera, visual imaging camera, imaging processing unit. Users interface which allows for all parameters to be set.

Claims

1. A smart thermal imaging and inspection device for a wheel, which comprises:

an infrared camera located adjacent to the wheel, wherein said infrared camera is positioned to have field of view which is traversed by the wheel to enable capturing infrared spectrum image data corresponding to emissivity;

a visual camera located adjacent to the wheel, wherein said visual camera is positioned to have field of view which is traversed by the wheel to enable capturing visible spectrum image data;

a computer based device having an image processor operably connected to each said camera for receiving said infrared spectrum image data and said visible spectrum image data, said image processor operably associated with memory and software for storing said image data, analyzing said image data and generating a signal indicative of one of a normal and abnormal condition of the wheel.

2. The smart thermal imaging and inspection device for wheel of claim 1, wherein said software employs said visible spectrum image data to correct emissivity.

3. The smart thermal imaging and inspection device for wheel of claim 1, wherein said software employs said infrared spectrum image data to correct emissivity.

4. The smart thermal imaging and inspection device for wheel of claim 1, wherein said cameras are operably disposed within a housing which includes a controllably openable shutter interposed between said cameras and said fields of view and which is operably connected to said computer based device in a manner to enable control of said shutter.

5. The smart thermal imaging and inspection device for wheel of claim 4, which includes a thermal stabilizing assembly operably connected to said mechanical shutter and said computer based device.

6. The smart thermal imaging and inspection device for wheel of claim 1, which includes a controllably illuminable strobe light disposed in a manner to illuminate an area within said fields of view and which is operably connected to said computer based device in a manner to enable control of said strobe.

7. The smart thermal imaging and inspection device for wheel of claim 1, which includes a wheel trigger which is operably connected to said computer based device in a manner to send a signal to said computer based device, wherein upon receiving said signal said image processor activates said cameras to capture said spectrum image data.

8. The smart thermal imaging and inspection device for wheel of claim 4, which includes an input/output relay which is operably interposed between said mechanical shutter and said computer based device and a wheel trigger which is operably connected to said input/output relay in a manner to send a signal to said input/output relay, wherein upon receiving said signal said input/output relay assembly sends a signal to actuate said shutter.

9. The smart thermal imaging and inspection device for wheel of claim 6, which includes an input/output relay which is operably interposed between said strobe and said computer based device and includes a wheel trigger which is operably connected to said input/output relay in a manner to send a signal to said input/output relay, wherein upon receiving said signal said input/output relay assembly sends a signal to actuate said strobe.

10. The smart thermal imaging and inspection device for wheel of claim 1, which includes a pan tilt assembly operably connected to said computer based device.

11. The smart thermal imaging and inspection device for wheel of claim 1, wherein said image processor has operably associated graphic user interface software which enables at least one of infrared curvature correction, emissivity correction, thermal analysis, image noise removal, and rotational motion analysis of said spectrum image data.

12. A smart thermal imaging and inspection device for an object, which comprises:

an infrared camera located adjacent to the object, wherein said infrared camera is positioned to have field of view which is traversed by the object to enable capturing infrared spectrum image data corresponding to emissivity;

a visual camera located adjacent to the object, wherein said visual camera is positioned to have field of view which is traversed by the object to enable capturing visible spectrum image data;

a computer based device having an image processor operably connected to each said camera for receiving said infrared spectrum image data and said visible spectrum image data, said image processor operably associated with memory and software for storing said image data, analyzing said image data and generating a signal indicative of one of a normal and abnormal condition of the object.

13. The smart thermal imaging and inspection device for the object of claim 12, wherein said software employs said visible spectrum image data to correct emissivity.

14. The smart thermal imaging and inspection device for the object of claim 12, wherein said software employs said infrared spectrum image data to correct emissivity.

15. The smart thermal imaging and inspection device for the object of claim 12, wherein said cameras are operably disposed within a housing which includes a controllably openable shutter interposed between said cameras and said fields of view and which is operably connected to said computer based device in a manner to enable control of said shutter.

16. The smart thermal imaging and inspection device for the object of claim 15, which includes a thermal stabilizing assembly operably connected to said mechanical shutter and said computer based device.

17. The smart thermal imaging and inspection device for the object of claim 12, which includes a controllably illuminable strobe light disposed in a manner to illuminate an area within said fields of view and which is operably connected to said computer based device in a manner to enable control of said strobe.

18. The smart thermal imaging and inspection device for the object of claim 12, which includes a trigger to indicate when the object is in said field of view which is operably connected to said computer based device in a manner to send a signal to said computer based device, wherein upon receiving said signal said image processor activates said cameras to capture said spectrum image data.

19. The smart thermal imaging and inspection device for the object of claim 15, which includes an input/output relay which is operably interposed between said mechanical shutter and said computer based device and an object trigger which is operably connected to said input/output relay in a manner to send a signal to said input/output relay, wherein upon receiving said signal said input/output relay assembly sends a signal to actuate said shutter.

20. The smart thermal imaging and inspection device for the object of claim 17, which includes an input/output relay which is operably interposed between said strobe and said computer based device and includes a object trigger which is operably connected to said input/output relay in a manner to send a signal to said input/output relay, wherein upon receiving said signal said input/output relay assembly sends a signal to actuate said strobe.

21. The smart thermal imaging and inspection device for the object of claim 12, which includes a pan tilt assembly operably connected to said computer based device.

22. The smart thermal imaging and inspection device for the object of claim 12, wherein said image processor has operably associated graphic user interface software which enables at least one of infrared curvature correction, emissivity correction, thermal analysis, image noise removal, and rotational motion analysis of said spectrum image data.

27. The smart thermal imaging and inspection device for object of claim 15, which includes a thermal stabilizing assembly operably connected to said mechanical shutter and said computer based device.

23. A method of inspecting an object, which comprises the steps of:

employing an infrared camera adjacent to the object, wherein said infrared camera is positioned to have field of view which is traversed by the object to enable capturing infrared spectrum image data corresponding to emissivity;

employing a visual camera located adjacent to the object, wherein said visual camera is positioned to have field of view which is traversed by the object to enable capturing visible spectrum image data;

employing a computer based device having an image processor operably connected to each said camera for receiving said infrared spectrum image data and said visible spectrum image data, said image processor operably associated with memory and software for storing said image data; and

analyzing said image data and generating a signal indicative of one of a normal and abnormal condition of the object.

24. The method claim 23, wherein said software employs said visible spectrum image data to correct emissivity.

25. The method claim 23, wherein said software employs said infrared spectrum image data to correct emissivity.

26. The method claim 23, wherein said cameras are operably disposed within a housing which includes a controllably openable shutter interposed between said cameras and said fields of view and which is operably connected to said computer based device in a manner to enable control of said shutter.

28. The method claim 23, which includes employing a controllably illuminable strobe light disposed in a manner to illuminate an area within said fields of view and which is operably connected to said computer based device in a manner to enable control of said strobe.

29. The method claim 23, which includes employing a trigger to indicated when the object is in view and which is operably connected to said computer based device in a manner to send a signal to said computer based device, wherein upon receiving said signal said image processor activates said cameras to capture said spectrum image data.

30. The method claim 28, which includes employing an input/output relay which is operably interposed between said strobe and said computer based device and includes a object trigger which is operably connected to said input/output relay in a manner to send a signal to said input/output relay, wherein upon receiving said signal said input/output relay assembly sends a signal to actuate said strobe.

31. The method claim 23, which includes employing a pan tilt assembly operably connected to said computer based device.

32. The method claim 23, wherein said image processor has operably associated graphic user interface software which enables at least one of infrared curvature correction, emissivity correction, thermal analysis, image noise removal, and rotational motion analysis of said spectrum image data.