Scanning Laser Range Finder with Surface Temperature Measurement Using Two-Color Pyrometry
AssigneeProcess Metrix
InventorsMichel Pierre Bonin, Thomas Lawrence Harvill, Alan Stanley Alsing
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Abstract
Apparatuses, methods, and systems are disclosed to characterize the wear and measure temperature of a surface of a lining of a metallurgical container. Wear characterization is accomplished by a scanning device by making thickness measurements of the lining and surface temperature measurements are made using a two-color pyrometer integrated with the scanning device where surface temperature is measured by correlating a ratio of two light intensities to the surface temperature. A controller controls operation of the scanning device and the two-color pyrometer.
Claims20
An apparatus to characterize a wear and measure a temperature of a surface of a lining of a container, said apparatus, comprising:
- a scanning device having a laser, a scanner, scanning optics, a photodetector, and receiver electronics, the scanning device being configured to make spatially resolved thickness measurements of the lining of the container by measuring distances from the scanning device to a plurality of points on the surface of the lining of the container;
- a two-color pyrometer configured to measure the temperature at the plurality of points on the surface of the lining of the container, the two-color pyrometer having a collection lens, a beam splitter, a first spectral filter having a first wavelength spectral range, a first detector to measure a first intensity of a first portion of light emitted from the plurality of points and filtered by the first spectral filter, a second spectral filter having a second wavelength spectral range, and a second detector to measure a second intensity of a second portion of the light emitted from the plurality of points and filtered by the second spectral filter, wherein the surface temperature for each point of the plurality of points is measured by correlating a ratio of the first and second intensities to the surface temperature;
- and
- a controller to control operation of the scanning device and the two-color pyrometer.
A method for characterizing a wear and measuring a temperature of a surface of a lining of a container, said method, comprising:
- taking spatially resolved thickness measurements of the lining of the container with a scanning device including a laser, a scanner, scanning optics, a photodetector, and receiver electronics, the scanning device making the spatially resolved thickness measurements of the lining of the container by measuring distances from the scanning device to a plurality of points on the surface of the lining of the container;
- taking spatially resolved temperature measurements at the plurality of points on the surface of the lining of the container with a two-color pyrometer, the two-color pyrometer including a collection lens, a beam splitter, a first spectral filter having a first wavelength range, a first detector to measure a first intensity of a first portion of light emitted from each point in the plurality of points and filtered by the first spectral filter, a second spectral filter having a second wavelength range, and a second detector to measure a second intensity of a second portion of the light emitted from each point of the plurality of points and filtered by the second spectral filter, wherein the surface temperature for each point of the plurality of points is measured by correlating a ratio of the first and second intensities to the surface temperature;
- and
- controlling operation of the scanning device and the two-color pyrometer by a controller.
Dependencies are inferred from the claim text.