Portable multi-function inspection systems and methods

• US 7,851,758 B1
• Filed: 03/08/2007
• Issued: 12/14/2010
• Est. Priority Date: 09/29/2005
• Status: Expired due to Fees

• Current Assignee: Teledyne FLIR LLC (Teledyne Technologies Incorporated)
• Original Assignee: FLIR Systems, Inc. (Teledyne Technologies Incorporated)
• Inventors: Scanlon, Tom, Madding, Robert P., Woolaway, James T.
• Primary Examiner(s): Porta; David P
• Assistant Examiner(s): Green; Yara B
• Application Number:
  US11/683,943
• Time in Patent Office: 1,377 Days
• Field of Search: 340/635, 340/588, 340/540, 340/657, 361/158, 361/1, 250/330, 250/338.1, 250/339.14, 324/415, 324/537, 324/500, 324/501
• US Class Current: 250/330
• 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 5/0265 Handheld, portable ear thermometers G01J5/049
• CPC Class Codes: G01J 5/0275 Control or determination of height or distance or angle information for sensors or receivers
• CPC Class Codes: G01J 5/042 High-temperature environment G01J5/0007, G01J5/0044, G01J5/0088 and G01J5/004 take precedence
• CPC Class Codes: G01J 5/07 Arrangements for adjusting the solid angle of collected radiation, e.g. adjusting or orienting field of view, tracking position or encoding angular position optical collimating elements G01J5/0806
• CPC Class Codes: G01J 5/08 Optical arrangements
• CPC Class Codes: G01J 5/0893 Arrangements to attach devices to a pyrometer, i.e. attaching an optical interface; Spatial relative arrangement of optical elements, e.g. folded beam path G01J5/049 takes precedence
• CPC Class Codes: G01J 5/0896 using a light source, e.g. for illuminating a surface
• CPC Class Codes: G01R 31/308 using non-ionising electromagnetic radiation, e.g. optical radiation investigating or analysing materials by the use of optical means G01N21/00; image analysis G06T7/00

Abstract

In accordance with at least one embodiment of the present invention, a portable inspection system is disclosed to capture inspection data, such as for example an infrared image, sound information, and/or electrical measurement information. The inspection data may be securely recorded (e.g., with an encryption algorithm) along with associated information, which may include for example date, time, system settings, operator identification, and location.

Claims

1. An inspection system comprising:

an infrared detector adapted to capture infrared image data of an electrical component;

a laser rangefinder adapted to provide a distance measurement to the electrical component;

a display adapted to display the infrared image data of the electrical component and the distance measurement to the electrical component, wherein the distance measurement on the display provides a safe distance perimeter indication from the electrical component for a user of the inspection system, with the safe distance perimeter indication comprising a color-coded warning for a degree of hazard to the user'"'"'s safety;

a data entry device adapted to allow an operator to enter information into the inspection system;

a memory adapted to store the infrared image data, the distance measurement, and the information provided via the data entry device, wherein the memory further stores at least one equation for performing computations based on temperature and electrical load measurements; and

a processor, coupled to the memory, the display, the infrared detector, the laser rangefinder, and the data entry device, adapted to execute the at least one equation and generate a result based on at least one temperature measurement derived from the infrared image data, at least one electrical load measurement stored in the memory, and a load correction factor having values ranging approximately between 1.0 to 1.9.

2. The inspection system of claim 1, wherein the inspection system further comprises:

a housing, wherein the infrared detector, the memory, and the processor are within the housing; and

an electrical measurement device, coupled to the housing, adapted to provide the at least one electrical load measurement to the memory,

wherein the load correction factor is based on convective and radiative heat transfer, with the load correction factor ranging approximately from 1.46 to 1.68.

3. The inspection system of claim 1, further comprising an electrical measurement device adapted to provide the at least one electrical load measurement to the memory, wherein the at least one electrical load measurement is provided via a wireless communication link.

4. The inspection system of claim 1, wherein the at least one electrical load measurement is provided via the data entry device to the memory.

5. The inspection system of claim 1, wherein the at least one equation comprises a first equation for determining a temperature estimate for a given electrical load and a second equation for determining an electrical load estimate for a given temperature.

6. The inspection system of claim 1, wherein the color-coded warning for a degree of hazard provides a green color to indicate a safe distance, a yellow color to indicate a minimum distance range, and a red color to indicate a less than safe minimum distance.

7. The inspection system of claim 1, wherein the memory is further adapted to store a minimum distance value, and wherein the processor is adapted to compare the distance measurement provided by the laser rangefinder with the minimum distance value and to determine the safe distance perimeter indication to display to the user.

8. The inspection system of claim 1, wherein the processor is further adapted to provide a signature for the infrared image data along with a time, a date, and the temperature and electrical load measurements.

9. The inspection system of claim 1, further comprising:

a target identification unit adapted to obtain identification information associated with the electrical component;

a position determination unit adapted to obtain a location of the inspection system;

an operator identification unit adapted to obtain information associated with an operator of the inspection system; and

an input/output interface adapted to transfer information between the inspection system and an external device.

10. The inspection system of claim 9, further comprising an audio processing unit adapted to record audio information.

11. A portable inspection system comprising:

means for receiving infrared image data from an electrical component;

means for determining a distance to the electrical component;

means for displaying the infrared image data of the electrical component and the distance to the electrical component;

means for warning an operator of the portable inspection system if the distance from the determining means is less than a minimum distance value, wherein the warning comprises a color-coded light on the displaying means based on a degree of hazard to the operator'"'"'s safety;

means for entering information into the inspection system;

means for storing the infrared image data, the information, the distance, and at least one equation for temperature and electrical load measurements;

means for generating a result based on the at least one equation, at least one temperature measurement based on the infrared image data, at least one electrical load measurement provided to the storing means, and a load correction factor having values between 1.0 and 1.9; and

means for obtaining a first set of information associated with the infrared image data, wherein the first set of information comprises a setting of the inspection system, a time of obtaining the infrared image data, a date of obtaining the infrared image data, and at least one of a location of the inspection system, operator information of the inspection system, and identification information associated with the electrical component.

12. The portable inspection system of claim 11, further comprising:

means for generating a signature for the infrared image data and the first set of information;

means for providing the at least one electrical load measurement; and

wherein the at least one equation comprises a first equation for determining a temperature estimate for a given electrical load and a second equation for determining an electrical load estimate for a given temperature.

13. The portable inspection system of claim 11, wherein the color-coded light comprises a first color to indicate a safe distance, a second color different from the first color to indicate an unsafe distance, and a third color different from the first color and the second color to indicate a minimum distance range.

14. The portable inspection system of claim 11, further comprising means for transferring the infrared image data and the first set of information from the inspection system.

15. A method of inspecting an electrical device with a portable inspection system, the method comprising:

receiving infrared image data from the electrical device;

determining a distance to the electrical device;

displaying the infrared image data of the electrical device and the distance to the electrical device with the inspection system;

warning an operator of the portable inspection system if the distance from the determining is less than a minimum distance value, wherein the warning comprises displaying a color-coded light based on a degree of hazard to the operator'"'"'s safety;

determining a temperature measurement based on the infrared image data;

determining an electrical load measurement;

storing at least one equation along with the electrical load measurement, the distance, the minimum distance value, and the temperature measurement within the inspection system; and

generating a result based on the at least one equation, the electrical load measurement, the temperature measurement, and a load correction factor having values approximately between 1.0 and 1.9 to provide at least one of an expected temperature and an allowable electrical load.

16. The method of claim 15, further comprising:

obtaining a first set of information associated with the infrared image data, wherein the first set of information comprises a setting of the inspection system, a time of obtaining the infrared image data, a date of obtaining the infrared image data, and at least one of a location of the inspection system, operator information of the inspection system, and identification information associated with the electrical component; and

securing the first set of information and the infrared image data with an encryption algorithm.

17. The method of claim 16, further comprising watermarking at least one of the infrared image data and the first set of information.

18. The method of claim 16, wherein the securing comprises:

hashing the infrared image data and the first set of information to generate digest information; and

signing the digest information to generate encrypted digest information.

19. The method of claim 16, further comprising transferring the infrared image data and the first set of information from the inspection system.

20. The method of claim 16, further comprising repeating the method for a plurality of electrical components to provide a recorded inspection route.

21. The method of claim 15, wherein the color-coded light comprises a first color to indicate a safe distance, a second color different from the first color to indicate an unsafe distance, and a third color different from the first color and the second color to indicate a minimum distance range.