Imaging and temperature monitoring system

• US 5,219,226 A
• Filed: 10/25/1991
• Issued: 06/15/1993
• Est. Priority Date: 10/25/1991
• Status: Expired due to Term

• Current Assignee: Quadtek Incorporated
• Original Assignee: Quadtek Incorporated
• Inventors: James, Richard K.
• Primary Examiner(s): Cuchlinski, Jr., William A.
• Assistant Examiner(s): Bennett, G. Bradley
• Application Number:
  US07/782,262
• Time in Patent Office: 599 Days
• Field of Search: 374/121, 374/124, 374/128, 374/137, 358/93, 358/107, 358/113, 358/125, 364/557, 250/330, 356/43, 340/709
• US Class Current: 374/124
• 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 5/047 Mobile mounting; Scanning arrangements
• 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 5/0801 Means for wavelength selection or discrimination
• CPC Class Codes: G01J 5/0806 Focusing or collimating elements, e.g. lenses or concave mirrors
• CPC Class Codes: G01J 5/0808 Convex mirrors
• CPC Class Codes: G01J 5/0813 Planar mirrors; Parallel phase plates
• CPC Class Codes: G01J 5/084 Adjustable or slidable
• 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 5/0859 Sighting arrangements, e.g. cameras
• CPC Class Codes: H04N 23/11 for generating image signals from visible and infrared light wavelengths
• CPC Class Codes: H04N 5/33 Transforming infrared radiation cameras or camera modules for generating image signals from infrared radiation H04N23/20; circuitry of SSIS for transforming infrared radiation into image signals H04N25/20

Abstract

An imaging and temperature monitoring system (10) is disclosed for displaying an image of an environment (E), along with information regarding the temperature of select regions (R) within the environment. The system includes a sensor head (12) equipped with a video imager (26) for producing a video image of the environment. The sensor head also includes a pyrometer (22) mounted on a computer-controlled translation stage (24), which allows the pyrometer to directly collect temperature information from the various regions. The combined imaging and temperature monitoring functions are advantageously achieved without tradeoffs in the performance of either function.

Claims

1. A system for monitoring the temperature of select regions of an area of interest, said system comprising:

imaging means for receiving radiation from the area of interest and producing an image output that represents an image of the area;

display means, responsive to said image output, for displaying an image of the area;

selection means for allowing at least one select region of the area to be selected on the image displayed by said display means;

temperature-sensitive means for receiving radiation from the at least one select region and producing a temperature output that represents the temperature of the selection region; and

control means, responsive to said selection means, for controlling which of the at least one select regions radiation is received from by said temperature-sensitive means.

2. The system of claim 1, wherein said display means is further for receiving said temperature output and for displaying the temperature of the one select region.

3. The system of claim 2, further comprising processing means for enhancing said image output and said temperature output for display.

4. The system of claim 3, wherein said processing means is for enhancing said image output to correct the shading of the image displayed without influencing the temperature output.

5. The system of claim 1, wherein the area emits radiation, said imaging means comprises a video imager for producing a video output in response to radiation received from the area, and said temperature-sensitive means comprises a pyrometer for producing a pyrometer output in response to radiation from the one of the select regions.

6. The system of claim 1, wherein said control means comprises adjustable support means for supporting said temperature-sensitive means relative to said imaging means for movement in two dimensions.

7. The system of claim 6, wherein said control means comprises processing means for producing a positional output indicative of a desired position of said temperature-sensitive means relative to said area, and drive means for adjusting said adjustable support means in response to said positional output.

8. The system of claim 6, wherein said adjustable support means comprises:

a support structure coupled to said temperature-sensitive means;

a first bearing, coupled to said support structure and extending in a first direction;

a second bearing, coupled to said support structure and extending in a second direction that is substantially perpendicular to the first direction;

a first motor having a telescoping shaft, said motor being fixedly supported relative to said imaging means and said shaft being engageable with said first bearing to induce translation of said first bearing and said support structure in the second direction; and

a second motor having a telescoping shaft, said motor being fixedly supported relative to said imaging means and said shaft being engageable with said second bearing to induce translation of said second bearing and said support structure in the first direction.

9. The system of claim 1, wherein said control means comprises adjustable mirror means for controllably directing radiation from the at least one select region to said temperature-sensitive means.

10. The system of claim 9, wherein said positional output produced by said control means is indicative of a range of positions through which the temperature-sensitive means is to be scanned by said adjustable support means.

11. The system of claim 10, wherein said range of positions indicated by said positional output is adjustable.

12. The system of claim 1, wherein the area emits radiation and wherein said system further comprises first and second optical paths for transmitting the radiation, said imaging means receiving radiation along said first optical path and said temperature-sensitive means receiving radiation along said second optical path, at least a portion of said first and second optical paths being common.

13. A method of collecting information about an area of interest that emits radiation and includes a plurality of regions, said method comprising the steps of:

supporting a pyrometer relative to a video imager in a predetermined relative alignment;

receiving the radiation emitted by the area with the video imager to produce a video output that represents an image of the area;

receiving the radiation emitted by one region of the area with the pyrometer to produce a temperature output that represents the temperature of the region; and

adjusting the predetermined relative alignment between the pyrometer and video imager to allow the pyrometer to receive radiation from a different one of the plurality of regions.

14. The method of claim 13, further comprising the step of displaying the image of the area, the position of the one region with respect to the area, and the temperature of the region.

15. The method of claim 14, wherein said step of adjusting comprises the steps of:

identifying a select region of the image of the area displayed; and

providing an output to an adjustable translation stage that supports the pyrometer to adjust the position of the pyrometer relative to the radiation received in response to the select region identified.

16. An imaging and temperature measuring system for producing an image of an area and for measuring the temperature of select regions within the area, said system comprising:

optical imaging means for producing an optical image of the area;

video imaging means for receiving the optical image and producing a video image;

temperature measurement means for receiving a limited portion of the optical image corresponding to a select region of the area and producing a direct temperature measurement in response to the limited portion of the optical image;

adjustment means for adjusting the limited portion of the optical image received by said temperature measurement means to allow the temperature of different select regions of the area to be measured; and

display means for receiving the video image and direct temperature measurement and displaying a visible image of the area and the temperature of a select region.

17. A system for producing a visible image of an area that is emitting radiation and for measuring the temperature of one or more select regions included within the area, said system comprising:

optical image collection means for receiving radiation emitted by the area and producing an optical image of the area;

optical image splitting means for splitting the optical image of the area into a first part and a second part;

video imaging means for receiving the first part of the optical image and producing a video image, representative of the entire area, in response thereto;

a pyrometer for receiving a limited portion of the second part of the optical image, representative of a limited portion of the area, and producing a temperature output in response thereto;

translation means for movably supporting said pyrometer relative to the second part of the optical image to adjust the limited portion of the second part of the optical image received by the pyrometer;

selection means for producing a selection output representative of a select region of the area whose temperature is to be measured;

control means for receiving the selection output and providing a control signal to said translation means to adjust the limited portion of the second part of the optical image to correspond to the select region;

processing means for receiving the temperature output of said pyrometer and producing a regional temperature output indicative of the temperature of the select region; and

display means for receiving the video output, selection output, and the regional temperature output and displaying a visible image of the area, identifying the select region on the visible image, and displaying the absolute temperature of the select region.